ContentsInstallers Guide
ModelGEM42
Underwriters Laboratories ListedThis gas fireplace and vent assembly MUST be
SAFETY AND WARNING INFORMATIONREAD and UNDERSTAND all instructions carefully
DO NOT USE this appliance if any part has beenSafety and Warning Information
TABLE OF CONTENTSService Parts Lists
Section 3 Installing the FireplaceGEM42
Service Parts5 Log set assembly
NG, LP Exploded Parts DiagramACCESSORIES / ACCESSOIRES
Service Parts List / Liste des pièces de rechangeGEM42Intermittent Pilot Ignition
Valve AssemblyHigh Altitude Installations
Installation Codes1Approvals and Codes
Appliance Certification2Getting Started
Pre-install PreparationIntroducing the Heat & Glo Gas Fireplaces
ANY SUCH ACTION MAY POSSIBLY CAUSE A FIRE HAZARDHeat & Glo GEM42 371-900 Rev. N 2/05
Figure 1. Diagram of the GEM42Constructing the Fireplace Chase
3Installing the FireplaceStep 1. Locating the Fireplace
Fireplace Dimensions, LocationsFigure 3. Framing Dimensions
Step 2. Framing the Fireplace47-1/2”
47-3/4”DVP90ST
NOTE PIPES OVERLAP 1-1/4 INCHES AT EACH JOINTA. Vent System Approvals
Step 3. Installing the Vent SystemTEMS OR COMPONENTS MAY BE USED
Identifying Vent ComponentsSTRAIGHT UP
Pilot Shield AdjustmentFlue Restrictor Instructions
VERTICAL VENTING V FT 40 MAX. 12.4 MTWO 2 90 o
VENTING WITHELBOWS
VENTING WITH ONE 1 90 ELBOWH FT
V FTVENTING WITH THREE 3 90 ELBOWS
H + H 1 FT3. Install Support Brackets
B. Installing Vent ComponentsVenting Out the Top Vent
1. Attach the First Vent Component to the Starting CollarsCut a 10-inch by 12-inch 254mm X 305mm hole through the wall
4. Install FirestopsFigure 15. 10 x 12 Hole and Vent Pipe
Figure 16. Heat Shield, Interior & Exterior FirestopsAttic Firestop
C. Vent TerminationWARNING THE TERMINATION CAP MUST BE
POSITIONED SO THAT THE ARROW IS POINT- ING UPelectrical service
= AREA WHERE TERMINAL IS NOT PERMITTEDnot to be installed above a gas
meter/regulator assembly withinWARNING MAJOR U.S. BUILDING CODES SPECIFY MINIMUM CHIMNEY AND/OR
Step 4. Positioning, Leveling and Securing the FireplaceFigure 22. Minimum Height from Roof to Lowest Discharge Opening
Figure 23. Proper PositioningHeat-Out Kit
Step 5. Installing the Optional Heat-Out or Heat-Zone KitsHeat-Zone Kit
Step 6 The Gas Control SystemStep 8. Gas Pressure Requirements
Step 7. The Gas Supply LinePressure
Natural GasFigure 26. Intermittent Pilot Ignition IPI Wiring Diagram
Step 9. Wiring the FireplaceIntermittent Pilot Ignition IPI Wiring 3 Volt Transformer
Operation with Battery Back-upFigure 27. Fan Wiring Diagram
Step 10. FinishingWARNING WHEN FINISHING THE FIREPLACE
FINISH WALL MATERIALFacing Requirements
IMPORTANT INSTALLATION NOTEFigure 31. Facing Template Dimensions
Facing Thickness from 3/4” to 1-1/4”Installing the Trim
Step 11. Installing Trim, Logs and Ember MaterialFigure 34. Glass Assembly
Glass Specifications GEM42 CERAMICStep 12. Before Lighting the Fireplace
After the InstallationStep 13. Lighting the Fireplace
Double-check for faulty components4Maintaining and Servicing Your Fireplace
Fireplace MaintenanceCleaning Flame Sensor Rod IPI Systems Frequency Annually
Cleaning Glass Door