Heat Glo LifeStyle Gas Heater GEM42 User Manual

Model:  
GEM42  
Installers Guide  
Underwriters  
Laboratories Listed  
READ THIS MANUAL BEFORE INSTALLING OR  
OPERATING THISAPPLIANCE. THIS INSTALLERS  
GUIDE MUST BE LEFT WITH APPLIANCE FOR  
FUTURE REFERENCE.  
WARNING: IF THE INFORMATION  
IN THESE INSTRUCTIONS IS NOT  
FOLLOWED EXACTLY, A FIRE OR  
EXPLOSION MAY RESULT CAUS-  
ING PROPERTY DAMAGE, PER-  
SONAL INJURY, OR DEATH.  
WARNING: IMPROPER INSTALLA-  
TION, ADJUSTMENT, ALTERATION,  
SERVICE OR MAINTENANCE CAN  
CAUSE INJURY OR PROPERTY DAM-  
AGE. REFER TO THIS MANUAL. FOR  
ASSISTANCE OR ADDITIONAL INFOR-  
MATION CONSULT A QUALIFIED IN-  
STALLER, SERVICE AGENCY, OR THE  
GAS SUPPLIER.  
- Do not store or use gasoline or other flam-  
mable vapors and liquids in the vicinity of this  
or any other appliance.  
- What to do if you smell gas  
• Do not try to light any appliance.  
• Do not touch any electrical switch.  
• Do not use any phone in your building.  
1. This appliance may be installed in an af-  
termarket, permanently located, manufac-  
tured (mobile) home, where not prohibited  
by local codes.  
• Immediately call your gas supplier from a  
neighbor's phone. Follow the gas supplier's  
instructions.  
• If you cannot reach your gas supplier, call  
the fire department.  
2. This appliance is only for use with the type  
of gas indicated on the rating plate. This  
appliance is not convertible for use with  
other gases, unless a certified kit is used.  
- Installation and service must be performed by a  
qualified installer, service agency, or the gas  
supplier.  
Printed in U.S.A. Copyright 2005,  
Please contact your Heat & Glo dealer with any  
questions or concerns. For the number of your nearest  
Heat & Glo dealer, please call 1-888-427-3973.  
Heat & Glo, a brand of Hearth & Home Technologies Inc.  
20802 Kensington Boulevard, Lakeville, MN 55044  
This product may be covered by one or more of the following patents: (United States) 4593510, 4686807, 4766876, 4793322, 4811534, 5000162, 5016609, 5076254, 5113843, 5191877, 5218953, 5263471,  
5328356, 5341794, 5347983, 5429495, 5452708, 5542407, 5601073, 5613487, 5647340, 5688568, 5762062, 5775408, 5890485, 5931661, 5941237, 5947112, 5996575, 6006743, 6019099, 6048195,  
6053165, 6145502, 6170481, 6237588, 6296474, 6374822, 6413079, 6439226, 6484712, 6543698, 6550687, 6601579, 6672860, 6688302B2, 6715724B2, 6729551, 6736133, 6748940, 6748942, D320652,  
D445174, D462436; (Canada) 1297749, 2195264, 2225408; or other U.S. and foreign patents pending.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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1
TABLE OF CONTENTS  
Safety and Warning Information ................................................ 2  
Service Parts Lists ..................................................................... 4  
Section 1: Approvals and Codes ............................................... 7  
Appliance Certification................................................................... 7  
Installation Codes.......................................................................... 7  
HighAltitude Installations ............................................................... 7  
Section 2: Getting Started ......................................................... 8  
Introducing the Heat & Glo Gas Fireplaces ................................... 8  
Pre-installation Preparation ........................................................... 8  
Section 3: Installing the Fireplace .......................................... 10  
Constructing the Fireplace Chase .............................................. 10  
Step 1  
Step 2  
Step 3  
Locating the Fireplace ................................................. 10  
Framing the Fireplace................................................... 11  
Installing the Vent System............................................ 13  
A. Vent System Approvals........................................... 13  
B. Installing Vent Components.................................... 17  
C. Vent Termination .................................................... 19  
Positioning, Leveling, and  
Î
Step 4  
Securing the Fireplace................................................. 21  
Installing the Optional Heat-Out or Heat-Zone Kits ...... 22  
The Gas Control Systems ........................................... 22  
The Gas Supply Line ................................................... 23  
Gas Pressure Requirements ...................................... 23  
Wiring the Fireplace .................................................... 24  
Step 5  
Step 6  
Step 7  
Step 8  
Step 9  
Î
Step 10 Finishing ...................................................................... 25  
Facing Requirements .................................................. 26  
Step 11 Installing Trim, Logs and Ember Material .................... 27  
Installing the Trim......................................................... 27  
Positioning the Logs .................................................... 27  
Î
Placing the Ember Material.......................................... 27  
Glass Specifications .................................................... 27  
Burner Removal............................................................ 27  
Î
Step 12 Before Lighting the Fireplace ....................................... 28  
Step 13 Lighting the Fireplace .................................................. 28  
After the Installation ..................................................................... 28  
Section 4: Maintaining and Servicing Your Fireplace......... 29  
Î = Contains updated information.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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3
Service Parts  
GEM42  
Beginning Manufacturing Date: 7-02  
Ending Manufacturing Date: ______  
(NG, LP) Exploded Parts Diagram  
(GN, PL) Vue éclatée des pièces  
12  
1
4
2
3
5 Log set assembly  
10  
11  
9
6
7
8
Part number list on following page.  
La liste des numéros de pièce se  
trouve à la page suivante.  
*
*
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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4
Service Parts List / Liste des pièces de rechange  
GEM42  
IMPORTANT: THIS IS DATED INFORMATION. The most current information is located on your dealers VIP site. When order-  
ing, supply serial and model numbers to ensure correct service parts. / IMPORTANT : L'information fournie dans cette brochure  
n'est valide que pendant une courte période. Les sites VIP des distributeurs disposent des renseignements les plus récents.  
Lors d'une commande, veuillez fournir les numéros de série et de modèles pour un remplacement adéquat des pièces.  
ITEM /  
PIÈCE  
SERIAL #  
/N° DE SÉRIE  
PART NUMBER  
/ N° DE PIÈCE  
DESCRIPTION  
1
2
3
Heat Shield / Protection(Bouclier) de Chaleur  
Glass Door Assembly / Porte en verre  
Log Grate / Grille de Bûche  
371-130  
GLA-GEM42  
PRE  
002330771  
370-360A  
370-361A  
SRV371-279A  
371-279A  
POST 002330771  
PRE 002330771  
POST 002330771  
4
5
Burner / Brûleur  
Log Set Assembly / Jeu de Bûches  
Log 1 / Bûche 1  
LOGS-GEM42  
SRV371-700  
SRV371-701  
SRV371-702  
SRV371-704  
SRV371-703  
SRV371-705  
371-140  
6
7
Log 2 / Bûche 2  
8
Log 3 / Bûche 3  
9
Log 4 / Bûche 4  
10  
11  
12  
Log 5 / Bûche 5  
Log 6 / Bûche 6  
Top Heat Shield / Protection(Bouclier) de Chaleur Supérieure  
Flue Restrictor 1-3/4" diameter / Restricteur de conduite de cheminée  
Flue Restrictor 1-1/2" diameter / Restricteur de conduite de cheminée  
Flue Restrictor 2" diameter / Restricteur de conduite de cheminée  
371-259  
370-260  
371-260  
383-250A  
4021-013  
PRE  
POST 5-04  
5-04  
Junction Box / Boîtier de dérivation  
3V Adaptor Plug / 3V Bouchon d'adapteur  
Battery Pack / Paquet de Batterie(Pile)  
Fan Kit / Module de ventilateur  
593-593A  
593-594A  
GFK-160A  
050-721  
Mineral Wool / Laine minérale  
Fiberglass Rope / Corde de fibre de verre  
Golden Embers / Braises dorées  
060-455  
GE-93  
Vermiculite Embers / Vermiculite Braises  
Template / Gabarit  
MYSTIC-EMBERS  
GEM42-TEMPLATE  
ACCESSORIES / ACCESSOIRES  
Wall Switch Kit, Off-white / Interrupteur mural, blanc crème  
Wall Switch Kit, White / Interrupteur mural, blanc  
Multi-functional Wall Switch / Le Commutateur de Mur multi-fonctionnel  
Heat-Out Kit / Chauffe-hors Trousse  
WSK-21  
WSK-21-W  
WSK-MLT  
HEAT-OUT  
HEAT-ZONE  
MESH-GEM42  
LPK-GEM42  
SRV-PACK  
Heat-Zone Kit / Trousse de chauffe-zone  
Trim Door Mesh / Écran porte de garniture  
LP Conversion Kit / Module de conversion PL  
Fiber Patch Kit / La Trousse de Pièce de fibre  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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5
Service Parts  
GEM42  
Beginning Manufacturing Date: 7-02  
Ending Manufacturing Date: ______  
(NG, LP) Exploded Parts Diagram  
(GN, PL) Vue éclatée des pièces  
7
Intermittent Pilot Ignition  
9
Valve Assembly  
8
18  
19  
17  
10  
11  
16  
12  
5
2
13  
4
15  
3
6
14  
1
ITEM /  
PIÈCE  
SERIAL #  
/N° DE SÉRIE  
PART NUMBER  
/ N° DE PIÈCE  
DESCRIPTION  
ON/OFF Rocker Switch / Interrupteur à bascule MARCHE/ARRÊT  
Valve NG / Valve GN  
Valve LP / Valve PL  
Flexible Gas Connector / Tuyau à gaz flexible  
Module / Module  
Wire Assembly / Module de fil  
Rheostat Assembly / Assemblée de Rhéostat  
Pilot Assembly NG / Module de veilleuse GN  
Pilot Assembly LP / Module de veilleuse PL  
Pilot Bracket / Parenthèse Pilote  
Ground Strap / Courroie de Raison(Terre)  
Valve Bracket / Parenthèse de Valve  
Flex Ball Valve Assembly / Fléchir l'Assemblée de Soupape de Balle  
Control Panel / Tableau de commande avant  
Flame Control Knob / Flamber le Bouton de Contrôle  
Rheostat Knob - Black / Bouton de Rhéostat - Noir  
Shutter Rod / Tige d'Obturateur  
060-521A  
750-500  
750-501  
567-301A  
593-592  
593-590A  
100-510A  
370-510A  
370-511A  
370-165  
385-512  
370-155  
302-320A  
370-153  
571-531  
100-512  
370-350  
107-531  
370-120  
319-167  
582-829  
582-848  
107-559A  
385-120  
1
2
2
3
4
5
6
7
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
19  
Temp Sensor / Détecteur de température  
Orifice Bracket / Parenthèse d'Orifice  
Handle / Poignée  
Burner Orifice NG (#29C) / Orifice de brûleur GN (#29C)  
Burner Orifice LP (#48C) / Orifice de brûleur PL (#48C)  
20 inch Wire Harness / Harnais de fil  
Pilot Support / Piloter le Soutien  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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6
Approvals and  
Codes  
1
Appliance Certification  
High Altitude Installations  
The Heat & Glo fireplace model discussed in this Installers  
Guide has been tested to certification standards and listed  
by the applicable laboratories.  
U.L. Listed gas appliances are tested and approved with-  
out requiring changes for elevations from 0 to 2,000 feet in  
the U. S. A. and in Canada.  
When installing this appliance at an elevation above 2,000  
feet, it may be necessary to decrease the input rating by  
changing the existing burner orifice to a smaller size. Input  
rate should be reduced by 4% for each 1000 feet above a  
2000 foot elevation in the U.S.A. or 10% for elevations  
between 2000 and 4500 feet in Canada. If the heating value  
of the gas has been reduced, these rules do not apply. To  
identify the proper orifice size, check with the local gas  
utility.  
Certification  
MODEL: GEM42  
LABORATORY: Underwriters Laboratories  
TYPE: Direct Vent Gas Fireplace Heater  
STANDARD: ANSI Z21.88-2000•CSA2.33-M98•UL307B  
Installation Codes  
If installing this appliance at an elevation above 4,500 feet  
(in Canada), check with local authorities.  
The fireplace installation must conform to local codes. Before  
installing the fireplace, consult the local building code  
agency to ensure that you are in compliance with all  
applicable codes, including permits and inspections.  
In the absence of local codes, the fireplace installation must  
conform to the National Fuel Gas Code ANSI Z223.1 (in  
the United States) or the CAN/CGA-B149 Installation Codes  
(in Canada). The appliance must be electrically grounded  
in accordance with local codes or, in the absence of local  
codes with the National Electric Code ANSI/NFPA No. 70  
(in the United States), or to the CSAC22.1 Canadian Electric  
Code (in Canada).  
These models may be installed in a bedroom or bed-sitting  
room in the U.S.A. and Canada.  
Heat & Glo Quality Systems  
registered by SGS ICS  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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7
Getting Started  
2
The Heat & Glo Warranty will be voided by, and Heat & Glo  
disclaims any responsibility for, the following actions:  
Introducing the Heat & Glo Gas Fireplaces  
Heat & Glo direct vent gas fireplaces are designed to oper-  
ate with all combustion air siphoned from outside of the  
building and all exhaust gases expelled to the outside.  
Installation of any damaged fireplace or vent system  
component.  
Modification of the fireplace or direct vent system.  
Installation other than as instructed by Heat & Glo.  
Improper positioning of the gas logs or the glass door.  
The information contained in this Installers Guide, unless  
noted otherwise, applies to all models and gas control  
systems. Gas fireplace diagrams, including the dimensions,  
are shown in this section.  
Installation and/or use of any component part not manu-  
factured and approved by Heat & Glo, not withstanding  
any independent testing laboratory or other party approval  
of such component part or accessory.  
Pre-install Preparation  
This gas fireplace and its components are tested and safe  
when installed in accordance with this Installers Guide.  
Report to your dealer any parts damaged in shipment,  
particularly the condition of the glass. Do not install any  
unit with damaged, incomplete, or substitute parts.  
ANY SUCH ACTION MAY POSSIBLY CAUSE A FIRE  
HAZARD.  
When planning a fireplace installation, it’s necessary to  
determine:  
The vent system components and trim doors are shipped  
in separate packages. The gas logs may be packaged  
separately and must be field installed.  
Where the unit is to be installed.  
The vent system configuration to be used.  
Gas supply piping.  
Read all of the instructions before starting the  
installation. Follow these instructions carefully during  
the installation to ensure maximum safety and benefit.  
Failure to follow these instructions will void the  
owner’s warranty and may present a fire hazard.  
Electrical wiring.  
Framing and finishing details.  
Whether optional accessories—devices such as a fan,  
wall switch, or remote control—are desired.  
If the fireplace is to be installed on carpeting or tile, or on  
any combustible material other than wood flooring, the  
fireplace should be installed on a metal or wood panel that  
extends the full width and depth of the fireplace.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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8
41-3/4” (1060.4mm)  
20-29/32”  
(531mm)  
8-3/32”  
(205.6mm)  
17-1/2” (443mm)  
Ø8” (203mm)  
46-3/4” (1187.4mm)  
47-9/16”  
(1208.1mm)  
35-9/32”  
(896.2mm)  
3”  
40-17/32”  
(1029.5mm)  
(76.2mm)  
2”  
(50.8mm)  
46” (1168.4mm)  
4-1/2”  
(114.3mm)  
5-7/32”  
(132.9mm)  
TOP STANDOFFS  
TOP VENT  
COLLARS  
HEAT-ZONE  
KNOCKOUTS  
TRIM DOOR  
HEAT-OUT  
KNOCKOUT  
ORIFICE  
ACCESS PANEL  
RATNG PLATES  
AND LABELS  
ELECTRICAL  
ACCESS  
GAS LINE  
ACCESS  
GAS  
CONTROLS  
Figure 1. Diagram of the GEM42  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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9
12” MIN. (304.8mm)  
B
Installing the Fireplace  
A
3
Constructing the Fireplace Chase  
A chase is a vertical box-like structure built to enclose the  
gas fireplace and/or its vent system. Vertical vents that run  
on the outside of a building may be, but are not required to  
be, installed inside a chase.  
E
D
C
CAUTION: TREATMENT OF FIRESTOP SPACERS AND  
CONSTRUCTION OF THE CHASE MAY VARY WITH THE  
TYPE OF BUILDING. THESE INSTRUCTIONS ARE NOT  
SUBSTITUTES FOR THE REQUIREMENTS OF LOCAL  
BUILDING CODES. THEREFORE, YOUR LOCAL BUILD-  
ING CODES MUST BE CHECKED TO DETERMINE THE  
REQUIREMENTS FOR THESE STEPS.  
1/2” MIN. (13mm)  
A
B
18”  
C
39”  
D
E
47-1/2”  
55.25”  
78-1/2”  
Figure 2. Fireplace Dimensions, Locations,  
and Space Requirements  
Factory-built fireplace chases should be constructed in the  
manner of all outside walls of the home to prevent cold air  
drafting problems. The chase should not break the outside  
building envelope in any manner.  
Minimum Clearances  
from the Fireplace to Combustible Materials  
Inches  
mm  
Glass Front........................ 36 .................... 914  
Floor ................................... 0 ....................... 0  
Rear ...................................1/2 ..................... 13  
Sides .................................1/2 ..................... 13  
Surround Sides*.................1/2 ..................... 13  
Top ...................................... 7 ..................... 178  
Ceiling** ............................. 31 .................... 787  
This means that the walls, ceiling, base plate and cantile-  
ver floor of the chase should be insulated. Vapor and air  
infiltration barriers should be installed in the chase as per  
regional codes for the rest of the home.Additionally, Heat &  
Glo recommends that the inside surfaces be sheetrocked  
and taped for maximum air tightness.  
To further prevent drafts, the firestops should be caulked to  
seal gaps. Gas line holes and other openings should be  
caulked or stuffed with insulation. If the unit is being in-  
stalled on a cement slab, we recommend that a layer of  
plywood be placed underneath to prevent conducting cold  
up into the room. Be sure to include spark arrestors for  
woodburning units if they are required.  
* See Figure 3.  
** The clearance to the ceiling is measured from the  
top of the unit, excluding the standoffs.  
The distance from the unit to combustible construction  
is to be measured from the unit outer wrap surface to  
the combustible construction, NOT from the screw heads  
that secure the unit together.  
THE CHASE SHOULD BE CONSTRUCTED SO THATALL  
CLEARANCES TO THE FIREPLACE ARE MAINTAINED  
AS SPECIFIED WITHIN THIS INSTALLERS GUIDE.  
Minimum Clearances  
from the Vent Pipe to Combustible Materials  
Step 1.  
Locating the Fireplace  
Inches  
mm  
Vertical Sections. ............. 1 ................ 25  
The following diagram shows space and clearance require-  
ments for locating a fireplace within a room.  
Horizontal Sections  
Top ..................................... 3 ................ 75  
Bottom ............................... 1 ................ 25  
Sides ................................. 1 ................ 25  
Clearance Requirements  
The top, back, and sides of the fireplace are defined by  
stand-offs. The minimum clearance to a perpendicular wall  
extending past the face of the fireplace is 12” (304.8 mm).  
The back of the fireplace may be recessed 17 1/2” (437.5 mm)  
into combustible construction.  
At Wall Firestops  
Top ..................................... 3 ................ 75  
Bottom ............................... 1 ................ 25  
Sides ................................. 1 ................ 25  
For minimum clearances, see the direct vent termination  
clearance diagrams on pages 20 and 21 in this manual.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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10  
Step 2. Framing the Fireplace  
Fireplace framing can be built before or after the fireplace is  
set in place. Framing should be positioned to accommo-  
date wall coverings and fireplace facing material. The dia-  
gram below shows framing reference dimensions.  
CAUTION: MEASURE FIREPLACE DIMENSIONS AND  
VERIFY FRAMING METHODS AND WALL COVERING  
DETAILS BEFORE FRAMING.  
Shows center of 10” x 12” vent framing  
holes for top and rear venting. The center  
of the hole is one (1) inch (25.4mm) above  
the center of the horizontal vent pipe.  
T
U
O
-
T
A
E
H
A. ................. 47-1/2”  
B. ................. 47-3/4”  
C. ................. 17-1/2”  
D
C
E
B
A
F
D. ........................ 65”  
E**. .......... 22-15/16”  
F.* ................ 55-1/2”  
Framing should be  
constructed of 2 X 4  
lumber or heavier.  
*Studs labeled “F” are necessary if installing the optional  
Arched Gem Stone Kits (BKMS6052, BEMS6052, GRS6052).  
**Heat-Out framing is 12 inches wide by 10 inches tall, opposite  
of vent framing. Center of Heat-Out framing is 1-1/16 inch  
LOWER than the center of the Heat-Out pipe.  
1/2” CLEARANCE FROM BACK OF FIREPLACE TO COMBUSTIBLE  
1/2” CLEARANCE  
FROM BOTH SIDES  
OF FIREPLACE  
TO COMBUSTIBLE  
Note: Remove cover  
plate (if present).  
FRAMING  
MEMBER  
1/2” CLEARANCE TO  
FRAMING MEMBER  
1/2” CLEARANCE  
Figure 3. Framing Dimensions  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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11  
4
6
12  
DVP4  
DVP6  
DVP12  
14-1/4  
12-3/16  
MAX.  
2
MIN.  
24  
36  
DVP12A  
48  
9-7/8  
DVP24  
45.0O  
10-1/4  
DVP45  
DVP36  
11-1/4  
7-1/4  
1-1/4 TYP  
DVP48  
1/2 TYP  
8-9/16  
12-9/16  
NOTE: PIPES OVERLAP 1-1/4 INCHES  
AT EACH JOINT.  
DVP90ST  
Figure 4. DVP-Series Direct Vent Component Specifications (5-inch inner pipe / 8-inch outer pipe)  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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12  
Step 3. Installing the Vent System  
A. Vent System Approvals  
Identifying Vent Components  
The vent systems installed on this gas fireplace may in-  
clude one, two, or three 90° elbow assemblies. The rela-  
tionships of vertical rise to horizontal run in vent configura-  
tions using 90° elbows MUST BE strictly adhered to. The  
rise to run relationships are shown in the venting drawings  
and tables. Refer to the diagrams on the next several pages.  
These models are approved to use DVP-series direct vent  
pipe components and terminations (see Figures 4 and 5).  
Approved vent system components are labeled for identifi-  
cation. This pipe is tested and listed as an approved com-  
ponent of the fireplace. The pipe is tested to be run inside  
an enclosed wall. There is no requirement for inspection  
openings at each joint within the wall. There is no required  
pitch for horizontal vent runs. NO OTHER VENTING SYS-  
TEMS OR COMPONENTS MAY BE USED.  
NOTE: Two 45° elbows may be used in place of one  
90° elbow. Rise to run ratios in the vent system must  
be followed if 45° elbows are used.  
Detailed installation instructions are included with each vent  
termination kit and should be used in conjunction with this  
Installers Guide.  
The flame and ember appearance may vary based on the type  
of fuel burned and the venting configuration used.  
VERTICAL  
TERMINATION  
STORM COLLAR  
ROOF FLASHING  
HORIZONTAL  
TERMINATION  
WALL FIRESTOP  
PIPE LENGTH  
90 DEGREE  
ELBOW  
CEILING  
FIRESTOP  
Î
Terminations Kits  
PVK-80  
DVP-TRAP  
SERIES  
DVP-TVHW  
Figure 5. Vent System Components and Termination Kits  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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13  
CAP  
STRAIGHT UP  
VERTICAL VENTING  
V (FT.)  
1-3/4”& 2” & 1-1/2”  
DIAMETER  
40' MAX. (12.4 M)  
V
NOTE: On vertical venting  
configurations install the  
vertical baffle found in your  
manual bag per the flue  
restrictor instructions in  
this section.  
Figure 8. Flue Restrictor  
Pilot Shield Adjustment  
When venting this unit with high vertical (8 feet or more)  
with very little horizontal the pilot shield will need to be  
bent down in the closed position as shown in Figure 9.  
Í
Figure 6.  
Straight Up Vertical Venting  
PILOT  
BRACKET  
Flue Restrictor Instructions  
1. Locate the flue restrictors inside the unit to the left of the  
control panel. There is one each of the 1-1/2” diameter,  
1-3/4” diameter and 2” diameter. Use the following table  
to determine which restrictor to use for the vent run. Place  
one restrictor into either the left or right 3” diameter ex-  
haust collar as shown.  
PILOT SHIELD  
PILOT SHIELD SHOULD BE  
CLOSED AND TOUCHING  
THE PILOT BRACKET  
Figure 9  
Vent Run  
Vertical  
15’-30’  
30’-40’  
Í
Note: When venting this unit with long horizontal runs  
and/or multiple elbows, the pilot shield will need to be in  
the opened position as in Figure 10.  
NG  
1-3/4”  
2”  
1-1/2”  
1-3/4”  
LP  
2. See Figure 8 for restrictor installation. Insert each restric-  
tor in one of the 3” exhaust collars as shown.  
FLUE  
RESTRICTOR  
FLUE  
RESTRICTOR  
PILOT SHIELD  
BEND PILOT SHIELD UP 3/8”  
TO ALLOW AIR FLOW TO  
FEED THE PILOT FLAME  
Figure 7  
Figure 10  
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14  
VENTING WITH ONE (1) 90° ELBOW  
V (FT.)  
H (FT.)  
2' MIN. (.609m)  
2.5' MIN. (.762m)  
3.5' MIN. (1.06m)  
4.5' MIN. (1.37m)  
5.5' MIN. (1.67m)  
6.5' MIN. (1.98m)  
7.5' MIN. (2.28m)  
8.5' MIN. (2.59m)  
3' MAX. (.912m)  
6' MAX. (1.82m)  
9' MAX. (2.73m)  
12' MAX. (3.64m)  
15' MAX. (4.55m)  
18' MAX. (5.46m)  
21' MAX. (6.37m)  
24' MAX. (7.28m)  
H
V = 40’ MAX. (12.2m)  
V+H = 64’ MAX. (19.5m)  
H = 24' MAX. (7.28m)  
V
H
V
NOTE: Must have an 18”  
minimum vertical vent  
before attaching a 90o  
elbow to the unit.  
Figure 11.  
Venting with One 90° Elbow  
V FT.  
H + H1 (FT.)  
3´ MAX. (.912m)  
6´ MAX. (1.82m)  
9’ MAX. (2.73m)  
12´ MAX. (3.64m)  
VENTING WITH  
TWO (2) 90o  
ELBOWS  
2' MIN. (.609m)  
2.5' MIN. (.762m)  
3.5' MIN. (1.06m)  
4.5' MIN. (1.37m)  
V+H+H1= 64' MAX.(19.5m) H+H1 = 24´ MAX. (7.3m)  
V+V1+H= 64' MAX.(19.5m)  
V
1
V
H
H
1
V
H
Figure 12. Venting with Two 90° Elbows  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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15  
VENTING WITH THREE (3) 90° ELBOWS  
V (FT.)  
2' MIN. (.609m)  
2.5' MIN. (.762m)  
3.5' MIN. (1.06m)  
4.5' MIN. (1.37m)  
H (FT.)  
3' MAX. (.912m)  
6' MAX. (1.82m)  
9' MAX. (2.73m)  
12' MAX. (3.64m)  
NOTE: H + H1 = 24' MAX. (7.28m)  
V + V1 + H + H1= 64' MAX. (19.5m)  
H
1
V
1
V
H
V
1
H
1
V
H
V (FT.)  
H + H1 (FT.)  
2' MIN. (.609m)  
2.5' MIN. (.762m)  
3.5' MIN. (1.06m)  
4.5' MIN. (1.37m)  
3' MAX. (.912m)  
6' MAX. (1.82m)  
9' MAX. (2.73m)  
12' MAX. (3.64m)  
H +H1 = 20' MAX. (6.2m)  
NOTE: V+V1+H +H1 = 64' MAX. (19.5m)  
Figure 13. Venting with three 90° elbows  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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16  
B. Installing Vent Components  
WARNING: ENSURE THAT THE FIBERGLASS  
GASKET SUPPLIED WITH THE FIREPLACE  
SEALS BETWEEN THE FIRST VENT COMPONENT  
AND THE OUTER FIREPLACE WRAP.  
!
Venting Out the Top Vent  
The glass must be taken off again for positioning the logs  
when the unit is finally installed in place and finished around  
it. Re-install the glass door. Attach vent system to the top  
starting collars.  
2. Continue Adding Vent Components  
• Continue adding vent components snap-locking, locking  
each succeeding component into place.  
1. Attach the First Vent Component to the  
Starting Collars  
• Ensure that each succeeding vent component is secure-  
ly fitted and locked into the preceding component in the  
vent system. Securing pipe sections with a maximum of  
two screws is recommended.  
To attach the first vent component to the starting collars of  
the fireplace:  
• Make sure that the fiberglass rope ring supplied in the  
manual bag seals between the first 8 inch (203mm) vent  
component and the outer fireplace wrap (see Figure 14).  
• 90° elbows may be installed and rotated to any point  
around the preceding component’s vertical axis. If an el-  
bow does not end up in a locked position with the pre-  
ceding component, attach with a minimum of two (2)  
sheet metal screws.  
OUTER  
WRAP  
FIRST VENT COMPONENT  
FIBERGLASS ROPE  
RING  
3. Install Support Brackets  
Refer to Cinch Pipe and Termination Cap installation  
instructions.  
Figure 14. Fiberglass Rope Ring  
Refer to Cinch Pipe (DVP) and Termination Cap installation  
instructions.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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17  
4. Install Firestops  
For Vertical Runs - One ceiling firestop is REQUIRED at  
the hole in each ceiling through which the vent passes.  
For Horizontal Runs - Firestops are REQUIRED on both  
sides of a combustible wall through which the vent passes.  
To install firestops for vertical runs that pass through ceilings:  
NOTE: Model DVP-TRAP does not need an exterior fir-  
estop on an exterior combustible wall.  
• Position a plumb bob directly over the center of the verti-  
cal vent component.  
To install firestops for horizontal runs that pass through  
either interior or exterior walls:  
• Mark the ceiling to establish the centerpoint of the vent.  
• Drill a hole or drive a nail through this centerpoint.  
• Cut a 10-inch by 12-inch (254mm X 305mm) hole through  
the wall.  
• Check the floor above for any obstructions, such as wir-  
ing or plumbing runs.  
NOTE: The center of the hole is one (1) inch (25.4mm)  
above the center of the horizontal vent pipe.  
• Reposition the fireplace and vent system, if necessary,  
to accommodate the ceiling joists and/or obstructions.  
• Position the firestops on both sides of the hole previ-  
ously cut and secure the firestops with nails or screws.  
• Cut an 10-inch X 10-inch (254mm X 254mm) hole through  
the ceiling, using the centerpoint previously marked.  
• The heat shields of the firestops MUST BE placed to-  
wards the top of the hole.  
• Frame the hole with framing lumber the same size as the  
ceiling joists.  
• Continue the vent run through the firestops.  
10" (254mm)  
NOTE: There must be NO INSULATION or other  
combustibles inside the framed firestop opening.  
10" (254mm)  
CHIMNEY  
HOLE  
10"  
INTERIOR  
WALL SHIELD  
EXISTING CEILING  
JOISTS  
NEW  
FRAMING  
MEMBERS  
CEILING  
12"  
Figure 17. 10" x 10" Hole & New Framing Members  
If the area above the ceiling is NOT an attic, position and  
secure the ceiling firestop on the ceiling side of the previously  
cut and framed hole.  
Figure 15. 10" x 12" Hole and Vent Pipe  
NOTE: There must be NO INSULATION or other  
combustibles inside the framed firestop opening.  
HEAT SHIELD  
TRIM HEAT  
SHIELD IF TOO  
LONG, ADD TO  
SHIELD IF TOO  
SHORT  
JOIST  
EXTERIOR  
FIRESTOP  
INTERIOR  
FIRESTOP  
CEILING  
NAILS (4 REQUIRED)  
CEILING FIRESTOP  
Figure 18. Ceiling Firestop (Ceiling Side)  
Figure 16. Heat Shield, Interior & Exterior Firestops  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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18  
If the area above the ceiling IS an attic, position and secure  
the firestop on top of the previously framed hole.  
C. Vent Termination  
For Horizontal Terminations - To attach and secure the  
termination to the last section of horizontal vent refer to the  
Cinch Pipe and Termination Cap installation instructions.  
NOTE: Keep insulation away from the vent pipe at least  
1 inch (25mm).  
• Push and snap-lock the ends as described at the begin-  
ning of the Installing Vent Components section.  
NAILS (4 REQUIRED)  
• The termination kit should pass through the wall firestops  
from the exterior of the building.  
• Adjust the termination cap to its final exterior position on  
the building.  
RAFTER  
WARNING: THE TERMINATION CAP MUST BE  
POSITIONED SO THAT THEARROW IS POINT-  
ING UP.  
!
For trapezoidal cap termination kits:  
CEILING  
• Using screws secure the cap to the exterior wall through  
the flanges in the cap.  
CEILING FIRESTOP  
Figure 19. Attic Firestop  
WARNING: VENTING TERMINALS SHALL  
NOT BE RECESSED INTO AWALL OR SID-  
!
ING. VENT TERMINATION CLEARANCES MUST  
BE FOLLOWED TO AVOID FIRE DANGER. SEE  
VENT TERMINATION MINIMUM CLEARANCES DI-  
AGRAM ON THE FOLLOWING PAGE.  
7 1/4”  
(184mm)  
Figure 20. Trapezoid Termination Cap  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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19  
M
N
P
R
G
v
A
H
Q
D
(See Note 2)  
v
V
B
L
U.S.  
(3 FT)  
B
T
v
v
v
B
v
S
S
Electrical  
Service  
V
V
F
v
M
I
D*  
V
v
X
A
J or K  
X
= VENT TERMINAL  
=AIR SUPPLY INLET  
= AREA WHERE TERMINAL IS NOT PERMITTED  
V
A
B
= 12" ....................... clearances above grade, veran-  
K
= 3 ft. (U.S.A.)  
(See Note 1)  
da, porch, deck or balcony  
6 ft. (Canada) ......... clearance to a mechanical  
air supply inlet  
= 12" ....................... clearances to window or door  
that may be opened, or to per-  
L** = 7 ft. ......................... clearance above paved  
(See Note 1)  
sidewalk or a paved driveway  
located on public property  
manently closed window.  
D*  
= 18" ....................... vertical clearance to unventilat-  
ed soffit or to ventilated soffit lo-  
M*** = 18" ......................... clearance under veranda,  
porch, dec, balcony or over-  
hang  
cated above the terminal  
*30” ...................... for vinyl clad soffits and below  
electrical service  
42” ......................... vinyl  
N
P
= 6” ........................... non-vinyl sidewalls  
12” ......................... vinyl sidewalls  
F
=
9" ........................ clearance to outside corner  
G
H
= 6" ......................... clearance to inside corner  
= 8 ft.  
= 3 ft. (Canada) ...... not to be installed above a gas  
meter/regulator assembly within  
______________________________Q___M_I_N___________________________________  
_____1___c__a_p__________________3___f_e_e__t_________________2__x__Q____A_C_T_U_A_L____  
______2__c__a_p__s________________6___f_e_e__t_________________1__x__Q____A_C_T_U_A_L____  
______3__c__a_p__s_________________9__f_e_e__t_______________2_/_3__x___Q___A_C_T_U_A__L___  
4 caps 12 feet 1/2 x Q ACTUAL  
RMAX  
3 feet (90cm) horizontally from the  
center-line of the regulator  
I
= 3 ft. (U.S.A.)  
6 ft. (Canada) ...... clearance to gas service regu-  
lator vent outlet  
= 9" (U.S.A.)  
QMIN = # termination caps x 3  
RMAX = (2 / # termination caps) x QACTUAL  
J
12" (Canada) ........ clearance to non-mechanical air  
supply inlet to building or the  
combustion air inlet to any other  
appliance  
S = 6" .......................... clearance from sides of elec-  
(See Note 5)  
trical service  
T
= 12" ......................... clearance above electrical  
(See Note 5)  
service  
NOTE 3: Local codes or regulations may require different  
clearances.  
** a vent shall not terminate directly above a sidewalk or paved  
driveway which is located between two single family dwellings  
and serves both dwellings.  
NOTE 4: Termination caps may be hot. Consider their proximity to  
doors or other traffic areas.  
*** only permitted if veranda, porch, deck or balcony is fully open on  
a minimum of 2 sides beneath the floor, meets Note 2.  
NOTE 5: Location of the vent termination must not interfere with  
access to the electrical service.  
NOTE 1: On private property where termination is less than 7 feet  
above a sidewalk, driveway, deck, porch, veranda or balcony, use of  
a listed cap shield is suggested.  
WARNING: In the U.S: Vent system termination is NOT permitted  
in screened porches. You must follow side wall, overhang and  
ground clearances as stated in the instructions.  
NOTE 2: Termination in an alcove space (spaces open only on one side  
and with an overhang) are permitted with the dimensions specified for  
vinyl or non-vinyl siding and soffits. 1. There must be 3 feet minimum  
between termination caps. 2. All mechanical air intakes within 10 feet  
of a termination cap must be a minimum of 3 feet below the termination  
cap. 3. All gravity air intakes within 3 feet of a termination cap must be  
a minimum of 1 foot below the termination cap.  
In Canada: Vent system termination is NOT permitted in screened  
porches. Vent system termination is permitted in porch areas  
with two or more sides open. You must follow all side walls,  
overhang and ground clearances as stated in the instructions.  
Heat & Glo assumes no responsibility for the improper perfor-  
mance of the fireplace when the venting system does not meet  
these requirements.  
Figure 21. Vent Termination Minimum Clearances  
CAUTION: IF EXTERIOR WALLS ARE FINISHED WITH VINYL SIDING, IT IS SUGGESTED THAT A VINYL PROTECTOR KIT BE  
INSTALLED.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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20  
WARNING: MAJOR U.S. BUILDING CODES  
SPECIFY MINIMUM CHIMNEY AND/OR  
HORIZONTAL  
OVERHANG  
!
VENT HEIGHTABOVE THE ROOF TOP. THESE MIN-  
IMUM HEIGHTS ARE NECESSARY IN THE INTER-  
EST OF SAFETY. SEE THE PREVIOUS DIAGRAM  
FOR MINIMUM HEIGHTS, PROVIDED THE TERMI-  
NATION CAPISAT LEAST 20 INCHES FROMAVER-  
TICAL WALLAND 2-FEET BELOWAHORIZONTAL  
OVERHANG.  
2 FT.  
MIN.  
20 INCH MIN.  
VERTICAL  
WALL  
LOWEST  
DISCHARGE  
OPENING  
TERMINATION  
CAP  
X
12  
NOTE: This also pertains to vertical vent systems in-  
stalled on the outside of the building.  
ROOF PITCH  
IS X/ 12  
To seal the roof hole, and to divert rain and snow from the  
vent system:  
H (MIN.) - MINIMUM HEIGHT FROM ROOF  
TO LOWEST DISCHARGE OPENING  
• Attach a flashing to the roof using nails, and use a non-  
hardening mastic around the edges of the flashing base  
where it meets the roof.  
• Attach a storm collar over the flashing joint to form a  
water-tight seal. Place non-hardening mastic around the  
joint, between the storm collar and the vertical pipe.  
Roof Pitch  
H (min.) ft.  
flat to 6/12  
6/12 to 7/12  
over 7/12 to 8/12  
over 8/12 to 9/12  
over 9/12 to 10/12  
over 10/12 to 11/12  
over 11/12 to 12/12  
over 12/12 to 14/12  
over 14/12 to 16/12  
over 16/12 to 18/12  
over 18/12 to 20/12  
over 20/12 to 21/12  
1.0  
1.25  
• Slide the termination cap over the end of the vent pipe  
and snap into place.  
1.5  
2.0  
2.5  
3.25  
4.0  
5.0  
6.0  
7.0  
7.5  
8.0  
Step 4. Positioning, Leveling and  
Securing the Fireplace  
The diagram below shows how to properly position, level,  
and secure the fireplace.  
Figure 22. Minimum Height from Roof to  
Lowest Discharge Opening  
For Vertical Terminations - To locate the vent and install  
the vent sections:  
• Locate and mark the vent centerpoint on the underside  
of the roof, and drive a nail through the centerpoint.  
• Make the outline of the roof hole around the centerpoint  
nail.  
• The size of the roof hole framing dimensions depend on the  
pitch of the roof. There MUST BE a 1-inch (25.4mm) clear-  
ance from the vertical vent pipe to combustible materials.  
• Mark the roof hole accordingly.  
NAILING TABS  
(BOTH SIDES)  
• Cover the opening of the installed vent pipes.  
• Cut and frame the roof hole.  
Figure 23. Proper Positioning,  
• Use framing lumber the same size as the roof rafters  
and install the frame securely. Flashing anchored to the  
frame must withstand heavy winds.  
Leveling and Securing of a Fireplace  
• Place the fireplace into position.  
• Level the fireplace from side to side and front to back.  
• Shim the fireplace with non-combustible material, such  
as sheet metal, as necessary.  
• Continue to install concentric vent sections up through  
the roof hole (for inside vent installations) or up past the  
roof line until you reach the appropriate distance above  
the roof (for outside terminations).  
• Secure the fireplace to the framing by nailing or screwing.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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21  
Step 5. Installing the Optional Heat-Out  
or Heat-Zone Kits  
Step 6 The Gas Control System  
WARNING: THIS UNIT IS NOT FOR USE WITH  
!
SOLID FUEL.  
Heat-Out Kit  
1. Remove the Heat-Out knockout from the fireplace and  
discard it (see Figure 24).  
The type of gas control system used with this model is  
Intermittent Pilot Ignition.  
2. Center the rear collar around the exposed hole and at-  
tach it to the fireplace with 3 screws. NOTE: Remove the  
bottom knockout on the collar for typical 2 x 4 or 2 x 6 wall  
construction. See Figure 24.  
Intermittent Pilot Ignition System  
This system includes millivolt control valve, standing pilot,  
thermopile/thermocouple flame sensor, and piezo ignitor.  
3. Cut and frame a 12” wide x 10” tall (305 x 254mm) hole in  
the exterior wall. The center of the hole will be 22-15/16”  
(583mm) above the base of the fireplace. See Figure 3.  
WARNING: 110-120 V AC MUST NEVER BE  
CONNECTED TO A CONTROL VALVE IN A  
MILLIVOLT SYSTEM.  
!
4. Install the interior firestop with the hole towards the top.  
Secure the firestop to wall framing members.  
WARNING: CONTINUOUS 110-120 VAC SER-  
VICE MUST BE WIRED DIRECTLYTO THE FIRE-  
PLACE JUNCTION BOX.  
!
Reference the Heat-Out kit instructions for the remaining  
installations steps.  
NOTE: There must be NO INSULATION or other com-  
bustibles inside the framed firestop opening.  
Intermittent Pilot Ignition  
FLAME SENSOR  
ROD  
HEAT-ZONE  
KNOCKOUTS  
HEAT-OUT  
KNOCKOUT  
REAR COLLAR  
BOTTOM  
KNOCKOUT  
Figure 25. Gas Controls System  
Figure 24  
Heat-Zone Kit  
1. Remove the knockout from the top of the fireplace and  
discard it (see Figure 24).  
2. Center the duct collar around the exposed hole and at-  
tach it to the fireplace with 3 screws. NOTE: Do this BE-  
FORE final positioning of the fireplace.  
3. Determine the location for the air register/fan housing  
assembly.  
Reference the Heat-Zone kit instructions for the remaining  
installations steps.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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22  
Step 8. Gas Pressure Requirements  
Step 7. The Gas Supply Line  
NOTE: Have the gas supply line installed in accordance  
with local building codes by a qualified installer ap-  
proved and/or licensed as required by the locality. (In  
the Commonwealth of Massachusetts installation must  
be performed by a licensed plumber or gas fitter).  
Pressure requirements for Heat & Glo gas fireplaces are  
shown in the table below.  
Pressure  
Natural Gas  
Propane  
Minimum  
Inlet Pressure  
5.0 inches  
w.c.  
11.0 inches  
w.c.  
NOTE: Before the first firing of the fireplace, the gas  
supply line should be purged of any trapped air.  
Maximum Inlet  
Gas Pressure  
14.0 inches  
w.c.  
14.0 inches  
w.c.  
NOTE: Consult local building codes to properly size  
the gas supply line leading to the 1/2 inch (13mm)  
hook-up at the unit.  
Manifold  
Pressure  
3.5 inches  
w.c.  
10.0 inches  
w.c.  
This gas fireplace is designed to accept a 1/2 inch  
(13 mm) gas supply line. To install the gas supply line:  
A one-eighth (1/8) inch (3 mm) N.P.T. plugged tapping is  
provided on the inlet and outlet side of the gas control for a  
test gauge connection to measure the manifold pressure.  
Use a small flat blade screwdriver to crack open the screw  
in the center of the tap. Position a rubber hose over the tap  
to obtain the pressure reading.  
• A listed (and Commonwealth of Massachusetts approved)  
1/2 inch (13mm) tee-handle manual shut-off valve and a  
listed flexible gas connector are connected to the 1/2  
inch (13mm) inlet of the control valve. NOTE: If substi-  
tuting for these components, please consult local codes  
for compliance.  
The fireplace and its individual shut-off valve must be  
disconnected from the gas supply piping system during  
any pressure testing of the system at test pressures in  
excess of one-half (1/2) psig (3.5 kPa).  
• Locate the gas line access hole in the outer casing of  
the fireplace.  
• The gas line may be run from either side of the fireplace  
provided the hole in the outer wrap does not exceed 2 1/2”  
in diameter and it does not penetrate the actual firebox.  
The fireplace must be isolated from the gas supply piping  
system by closing its individual shut-off valve during any  
pressure testing of the gas supply piping system at test  
pressures equal to or less than one-half (1/2) psig (3.5 kPa).  
• The gap between the supply piping and gas access hole  
can be plugged with non-combustible insulation to pre-  
vent cold air infiltration.  
• Open the fireplace lower grille, insert the gas supply line  
through the gas line hole, and connect it to the shut-off valve.  
• When attaching the pipe, support the control so that the  
lines are not bent or torn.  
• After the gas line installation is complete, all connec-  
tions must be tightened and checked for leaks with a  
commercially-available, non-corrosive leak check solu-  
tion. Be sure to rinse off all leak check solution following  
testing.  
Warning: DO NOT USE AN OPEN FLAME TO  
CHECK FOR GAS LEAKS.  
!
• At the gas line access hole, use insulation to re-pack  
the space around the gas pipe.  
• Insert insulation from the outside of the fireplace and  
pack the insulation tightly to totally seal between the  
pipe and the outer casing.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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23  
JUNCTION BOX  
SPARK TO  
PILOT IGNITOR  
TRANSFORMER OUTLET  
IGNITOR  
MODULE  
3V  
ORANGE (IGNITOR)  
WHITE (SENSOR)  
I
PLUG-IN  
3V TRANSFORMER  
S
PILOT ASSEMBLY  
BLACK  
ORMER  
TRANSF  
3V  
LOW VOLTAGE  
SEE NOTE 1  
FLAME SPARKER /  
SENSOR  
AND VALVE ASSEMBLY  
MUST BE GROUNDED  
(COMMON GROUND  
WITH FIREPLACE  
CHASSIS)  
GROUND TO  
FIREPLACE  
CHASSIS  
IGNITION  
MODULE  
(3V)  
BLACK  
OPTIONAL  
OPTIONAL  
BATTERY  
BACK-UP  
BATTERY  
BACK-UP  
ORANGE  
ON/OFF  
WALL SWITCH  
RED  
ON/OFF  
SWITCH  
LOW VOLTAGE  
SEE NOTE 1  
VALVE  
BROWN  
BROWN  
REMOTE  
CONTROL  
GROUND  
NEUTRAL  
GREEN  
HOT  
NOTE 1: Ignition module, valve, pilot and wall switch operate on 3 volts.  
120 VAC is required at junction box unless equipped with battery back-up.  
Figure 26. Intermittent Pilot Ignition (IPI) Wiring Diagram  
Step 9. Wiring the Fireplace  
Wall Switch  
Intermittent Pilot Ignition (IPI) Wiring  
Position the wall switch in the desired position on a wall.  
Run a maximum of 25 feet (7.8 m) or less length of 18  
A.W.G. minimum wire and connect it to the fireplace ON/  
OFF switch pigtails.  
3 Volt Transformer  
This appliance comes with a factory installed 3 volt trans-  
former.  
Operation with Battery Back-up  
This appliance comes with a factory installed battery back-  
up.  
WARNING: DO NOT CONNECT 110-120 VAC  
TO THE WALL SWITCH OR THE CONTROL  
!
VALVE WILL BE DESTROYED.  
Appliance Requirements  
This appliance requires that 110-120 VAC be wired to the  
factory installed junction box. Maintain correct polarity when  
wiring the junction box.  
CAUTION: LABEL ALL WIRES PRIOR TO DISCONNEC-  
TION WHEN SERVICING CONTROLS. WIRING ERRORS  
CAN CAUSE IMPROPER AND DANGEROUS OPERA-  
TION. VERIFYPROPER OPERATIONAFTER SERVICING.  
WARNING: DO NOT CONNECT 110-120 VAC  
!
TO THE GAS CONTROL VALVE OR THE AP-  
PLIANCE WILL MALFUNCTION AND THE  
VALVE WILL BE DESTROYED.  
Optional Accessories  
Optional remote control kits require that 110-120 VAC be  
wired to the factory installed junction box before the fire-  
place is permanently installed.  
Heat-Zone and Heat-Out kits are approved with this fire-  
place as heat management accessories.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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24  
FAN  
JUNCTION BOX  
SPEED CONTROL  
(RHEOSTAT)  
TEMPERATURE  
SENSOR SWITCH  
Figure 27. Fan Wiring Diagram  
CAUTION: IF JOINTS BETWEEN THE FINISHED WALLS  
Step 10. Finishing  
AND THE FIREPLACE SURROUND (TOP AND SIDES)  
ARE SEALED, A 300° F. MINIMUM SEALANT MATE-  
RIAL MUST BE USED. THESE JOINTS ARE NOT RE-  
QUIRED TO BE SEALED. ONLY NON-COMBUSTIBLE  
MATERIAL (USING 300° F. MINIMUM ADHESIVE, IF  
NEEDED) CAN BE APPLIED AS FACING TO THE FIRE-  
PLACE SURROUND. SEE THE DIAGRAM BELOW.  
Figure 28 shows the minimum vertical and corresponding  
maximum horizontal dimensions of fireplace mantels or other  
combustible projections above the top front edge of the  
fireplace. See Figures 2 and 3 for other fireplace clearances.  
Only non-combustible materials may be used to cover the  
black fireplace front.  
WARNING: WHEN FINISHING THE FIREPLACE,  
NEVER OBSTRUCT OR MODIFY THE AIR IN-  
LET/OUTLET GRILLES IN ANY MANNER.  
FINISH WALL MATERIAL  
MUST BE NON-COMBUSTIBLE  
- TOP AND SIDES  
!
Í
NON-COMBUSTIBLE  
60”  
CEILING  
1 IN. TYPICAL  
12”  
11”  
10”  
COMBUSTIBLE  
SHEATHING  
9”  
8”  
7”  
6”  
FIREPLACE  
HEADER  
5”  
4”  
3”  
31 IN MINIMUM  
CLEARANCE  
2”  
1”  
52”  
TOP FRONT  
EDGE OF FIREPLACE  
17 IN. MINIMUM FROM TOP  
OF ARCH OPENING TO  
FIRST MANTEL PROJECTION  
17 IN. MINIMUM NON-COMBUSTIBLE  
SHEATHING ABOVE FIREPLACE  
ARCH OPENING  
NON-COMBUSTIBLE  
SHEATHING  
HIGH TEMPERATURE (3000F / 1490C MIN.)  
TOP & SIDES SEAL JOINT  
TOP OF ARCH  
OPENING  
Figure 29. Sealant Material  
WARNING: A 8” minimum hearth extension  
is required to protect combustible floor con-  
!
Î
Figure 28.  
struction in front of the fireplace. This hearth must  
be constructed of non-combustible material and  
extend the width of the fireplace.  
Minimum Vertical and Maximum Horizontal  
Dimensions of Combustibles above Fireplace  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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25  
Facing Requirements  
Facing Thickness from 3/4” to 1-1/4”  
Facing Thickness greater than 1-1/4”  
Facing material within this thickness range can be brought  
to 1/2” behind the door top and sides. These non-combus-  
tible finishing materials must never overlap or obstruct the  
air outlet/inlet grille areas.  
For facing material greater than 1-1/4” a template should be  
constructed to provided the finishers with a guide so as to  
leave a 1/8” gap between the finishing materials and the  
door. See Figure 31 to construct the facing template.  
NON-COMBUSTIBLE  
MATERIAL*  
44.5”R  
Ø
3/8”  
HEADER  
34.375”  
27.970”  
25.257”  
3.625”  
2.5”  
52”  
2.5”  
46.250”  
Figure 31. Facing Template Dimensions  
60”  
NON-COMBUSTIBLE  
BOARD  
*The fireplace requires a concrete board (or  
other non-combustible material) extending from  
the header to the floor and extending from fram-  
ing stud to framing stud. 52” HT x 60” WD  
Figure 30.  
IMPORTANT INSTALLATION NOTE:  
Please note that there are four holes or dots on the tem-  
plate to assist in positioning the template. These holes or  
dots should line up with the door mounting holes on the unit  
to ensure proper placement of the door after finishing mate-  
rials are installed.  
FACING TEMPLATE  
Figure 32. Position of board and template  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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26  
• Save the remaining ember materials for use during fire-  
place servicing.  
Step 11. Installing Trim, Logs,  
and Ember Material  
• Replace the glass door and a front trim door on the unit.  
Installing the Trim  
Combustible materials may be brought up to the specified  
clearances on the side and top front edges of the fireplace,  
but MUST NEVER overlap onto the front face. The joints  
between the finished wall and the fireplace top and sides  
can only be sealed with a 300° F. (149° C) minimum sealant.  
• Pull out and latch the glass clips into the groove on the  
glass frame.  
WARNING: WHEN FINISHING THE FIREPLACE,  
!
NEVER OBSTRUCT OR MODIFY THE AIR INLET/  
OUTLET GRILLES IN ANY MANNER.  
LATCHES  
(BOTH BOTTOM  
AND TOP)  
Install optional marble and brass trim surround kits as  
desired. Marble, brass, brick, tile, or other non-combustible  
materials can be used to cover up the gap between the  
sheet rock and the fireplace.  
GLASS  
ASSEMBLY  
Do not obstruct or modify the air inlet/outlet grilles. When  
overlapping on both sides, leave enough space so that the  
bottom grille can be lowered and the trim door removed.  
Positioning the Logs  
If the gas logs have been factory installed they should not  
need to be positioned. If the logs have been packaged  
separately, refer to the instructions that accompany the  
logs. Save the log instructions with this manual.  
Figure 34. Glass Assembly  
Glass Specifications:  
GEM42: CERAMIC  
If sooting occurs, the logs might need to be repositioned  
slightly to avoid excessive flame impingement.  
Note shutter  
position  
Placing the Ember Material  
REMOVE 2  
SCREWS  
Ember material is shipped with this gas fireplace. To place  
the ember material:  
• Pull the four glass latches out of the groove on the glass  
frame. Remove glass door from the unit (see Figure 33).  
• Embers CANNOT be placed directly over ports. Care  
should be taken not to cover the lighting trail of ports  
(from back to front).  
• Place dime size pieces of mineral wool embers about 1/2  
inch apart near port holes in burner top. Do NOT press  
embers into burner ports. Cover the top of the burner  
with a single layer of ember material. For best perfor-  
mance do NOT place embers on the ports at the rear of  
the burner (Figure 33). Failure to follow this procedure  
will likely cause lighting and sooting problems.  
Î
Figure 35.  
Í
Í
Í
Burner Removal  
Note the position of the shutter and shutter stop bracket  
(Figure 35). This will need to be re-set after replacing the  
burner.  
EMBER  
PLACEMENT  
Remove the burner from the fireplace as shown in Figure  
35. Remove the burner assembly by first removing the  
screws (2) that secure it behind the burner surface. Slide  
the adjustable shutter towards the rear of the fireplace  
(closed position). Lift the burner up and towards you to  
remove.  
Figure 33  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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27  
Air Shutter Setting  
Step 12. Before Lighting the Fireplace  
This fireplace has an adjustable air shutter (which controls  
the primary air) factory set for the minimum vertical vent run  
(see Figure 36). If your installation has more than the  
minimum required vertical vent length, adjustment of the air  
shutter may be necessary to obtain optimal flame  
appearance. This should be adjusted by a qualified  
installer at the time of installation.  
Before lighting the fireplace, be sure to do the following:  
Remove all paperwork from underneath the fireplace.  
Review safety warnings and cautions  
• Read the Safety and Warning Information section at  
the beginning of this Installers Guide.  
Double-check for gas leaks  
The air shutter handle has a gap maintainer clip factory  
installed which needs to be removed to make any  
adjustments. By pushing the air shutter handle in, you will  
be closing the air shutter. Care should be taken when  
adjusting the air shutter so as not to cause the fireplace to  
soot. If sooting occurs the air shutter will need to be opened  
by pulling the handle out.  
• Before lighting the fireplace, double-check the unit for  
possible gas leaks.  
Double-check vent terminations and front grilles for  
obstructions.  
• Before lighting the fireplace, double-check the unit for  
possible obstructions that could be blocking the vent ter-  
minations or the front grilles.  
Double-check for faulty components  
Step 13. Lighting the Fireplace  
• Any component that is found to be faulty MUST BE re-  
placed with an approved component. Tampering with the  
fireplace components is DANGEROUS and voids all war-  
ranties.  
You’ve reviewed all safety warnings, you’ve checked the  
fireplace for gas leaks, you know the vent system is  
unobstructed, and you’ve checked for faulty components.  
Now you’re ready to light the fireplace.  
A small amount of air will be in the gas supply lines. When  
first lighting the fireplace, it will take a few minutes for the  
lines to purge themselves of this air. Once the purging is  
complete, the fireplace will light and will operate normally.  
WARNING: PLEASE REFER TO THE USER’S  
MANUALFOR ALL CAUTIONS, SAFETY, AND  
!
Subsequent lightings of the fireplace will not require this  
purging of air from the gas supply lines, unless the gas  
valve has been turned to the OFF position, in which  
case the air would have to be purged.  
WARNING INFORMATION PERTAINING TO THE  
LIGHTING AND OPERATION OF THE FIREPLACE.  
After the Installation  
NOTE: The fireplace should be run 3 to 4 hours on the initial  
start-up. Turn it off and let it cool completely. Remove and  
clean the glass. Replace the glass and run the fireplace for  
an additional 8 hours. This will help to cure the products  
used in the paint and logs.  
LEAVE THIS INSTALLATION MANUAL WITH  
!
THE APPLIANCE FOR FUTURE REFERENCE.  
During this break-in period it is recommended that some  
windows in the house be opened for air circulation. This will  
help avoid setting off smoke detectors, and help eliminate  
any odors associated with the fireplace’s initial burning.  
GAP MAINTAINER CLIP  
AIR SHUTTER  
HANDLE  
Figure 36.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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28  
Maintaining and Servicing Your Fireplace  
4
Fireplace Maintenance  
Checking Flame Patterns, Flame Height  
Frequency: Periodically.  
Although the frequency of your fireplace servicing and main-  
tenance will depend on use and the type of installation, you  
should have a qualified service technician perform an appli-  
ance check-up at the beginning of each heating season.  
See the table below for specific guidelines regarding each  
fireplace maintenance task.  
By: Qualified service technician/Home owner.  
Task: Make a visual check of your fireplace’s flame patterns.  
Make sure the flames are steady - not lifting or floating. The  
thermopile/thermocouple tips should be covered with flame.  
See Figure 25.  
IMPORTANT: TURN OFF THE GAS BEFORE SERVICING  
YOUR FIREPLACE.  
Checking Vent System  
Frequency: Before initial use and at least annually  
thereafter, more frequently if possible.  
Replacing old ember material  
Frequency: Once annually, during the checkup.  
By: Qualified service technician.  
By: Qualified service technician/Home owner.  
Task: Inspect the external vent cap on a regular basis to  
ensure that no debris is interfering with the flow of air. Inspect  
entire vent system for proper function.  
Task: Brush away loose ember material near the burner.  
Replace old ember material with new dime-size and shape  
pieces. Save the remaining ember material and repeat this  
procedure at your next servicing. For more information, see  
Placing Ember Material.  
Cleaning Glass Door  
Frequency: After the first 3 to 4 hours of use. As neces-  
sary after initial cleaning.  
Cleaning Burner and Controls  
By: Home owner.  
Frequency: Once annually.  
By: Qualified service technician.  
Task: Brush or vacuum the control compartment, fireplace  
logs and burner areas surrounding the logs.  
Task: Remove and clean glass after the first 3 to 4 hours of  
use. After the initial cleaning, clean as necessary, particu-  
larly after adding new ember (flame colorant) material. Film  
deposits on the inside of the glass door should be cleaned  
off using a household glass cleaner. NOTE: DO NOT handle  
or attempt to clean the door when it is hot and DO  
NOT use abrasive cleaners.  
Cleaning Flame Sensor Rod (IPI Systems)  
Frequency: Annually.  
By: Qualified service technician.  
Task: Make a visual check of the straight flame sensor rod  
(see Figure 25). Use emery cloth to carefully remove any  
existing film or white deposits.  
Heat & Glo • GEM42 • 371-900 Rev. N • 2/05  
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29  

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