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VENT-FREE BLUE FLAME
GAS HEATER
SAFETY INFORMATION AND
INSTALLATION MANUAL
For more information, visit www.desatech.com For more information, visit www.desatech.com
CR94-001 UNVENTED
ROOM HEATER
GCN6, GCP6
GCN20T, GCP20T
GCN10T, GCP10T
Unvented room heaters are for installa-
WARNING: If the information in this manual is
tion in SINGLE FAMILY TYPE RESI-
not followed exactly, a fire or explosion may
DENCES ONLY, and the installation is
result causing property damage, personal in-
limited to ONE (1
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TABLE OF CONTENTS 2 SAFETY INFORMATION TABLE OF CONTENTS SAFETY INFORMATION ............................................................ 2 ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 20 UNPACKING ............................................................................... 3 SPECIFICATIONS..................................................................... 26 PRODUCT IDENTIFICATION ..................................................... 3 SERVICE CENTER/PARTS CENTRAL ....................
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SAFETY INFORMATION 3 UNPACKING 3 PRODUCT IDENTIFICATION PRODUCT FEATURES SAFETY INFORMATION Continued 14. Provide adequate clearances around air openings. Installation and repair should be done by a qualified 15. Before using the heater, provide adequate ventilation. An area service person. The appliance should be inspected 2 of 10 square inches (65 cm ) of opening of a window or roof and serviced before use and at least annually by a vent is needed for adequate combustion and ventilation air. p
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LOCAL CODES 4 AIR FOR COMBUSTION AND VENTILATION Providing Adequate Ventilation LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of Unusually Tight Construction local codes, use the latest edition of CAN/CGA B149.1 Natural Gas The air that leaks around doors and windows may provide enough Installation Code or CAN/CGA B149.2 Propane Installation Code*. fresh air for combustion and ventilation. However, in buildings of *Available from www.csa.ca or 1-800-463-672
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AIR FOR COMBUSTION AND VENTILATION 5 Determining Fresh-Air Flow For Heater Location 5 AIR FOR COMBUSTION AND VENTILATION Continued The space in the above example is a confined space because the actual Btu/Hr DETERMINING FRESH-AIR FLOW FOR (kW) used is more than the maximum Btu/Hr (kW) the space can support. HEATER LOCATION You must provide additional fresh air. Your options are as follows: Determining if You Have a Confined or A. Rework worksheet, adding the space of an adjoining room. If the Un
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AIR FOR COMBUSTION AND VENTILATION Ventilation Air 6 INSTALLATION Check Gas Type AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR Ventilated Outlet Ventilation Air From Inside Building Attic Air This fresh air would come from an adjoining unconfined space. Outlet When ventilating to an adjoining unconfined space, you must Air To Attic provide two permanent openings: one within 18" (45 cm) of the ceiling and one within 18" (45 cm) of the floor on the wall connecting the two spaces (s
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INSTALLATION 7 Installation Items 7 Locating Heater INSTALLATION Continued INSTALLATION ITEMS CAUTION: This heater creates warm air currents. Before installing heater, make sure you have the items listed below. These currents move heat to wall surfaces next to heater. Installing heater next to vinyl or cloth wall • for propane/LP gas, external regulator (supplied by installer) coverings or operating heater where impurities (such • piping (check local codes) as but not limited to, tobacco smoke,
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INSTALLATION 8 Thermostat Sensing Bulb (Thermostat Models Only) Installing Heater To Wall 6,000 and 10,000 Btu/Hr Models (1.8 and 2.9 kW) INSTALLATION Continued 7 3 THERMOSTAT SENSING BULB 8 /8" 7 /4" (22.5 cm) (19.7 cm) (Thermostat Models Only) Blue Flame The thermostat sensing bulb has been placed inside the heater for Minimum To Maintain 6" protection during shipping. Clearance Locating Thermostat Sensing Bulb (for thermostat From Wall applications) Mounting 1 20 /4" (51.4 cm) Screw 1. Remove
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INSTALLATION 9 Installing Heater To Wall 6,000 and 10,000 Btu/Hr Models (1.8 and 2.9 kW) (Cont.) 9 Installing Heater To Wall 20,000 Btu/Hr Models (5.9 kW) INSTALLATION Continued 5. Tighten two screws until 1/16" (1.6 mm) space (thickness of Installing Bottom Mounting Screw penny) is between screwheads and wall (see Figure 9). 1. Locate bottom mounting hole. This hole is near bottom on back panel of heater (see Figure 12). Thin or 2. Mark screw location on wall. Thick Wall (thick wall 3. Remove h
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INSTALLATION 10 Installing Heater To Wall 20,000 Btu/Hr Models (5.9 kW) (Cont.) INSTALLATION Continued 8" 14" (20.3 cm) (35.6 cm) Min. Removing Front Panel Of Heater (20,000 Btu/Hr Models Only) (5.9 kW) 1. Remove the four painted screws, two on each side of front panel. Only Insert Mounting 3 2. Pull bottom of front panel forward, then out. 18 /4" Screws Through Last (47.7 cm) Hole On Each End 3. Remove any remaining packaging materials. Min. Floor Figure 15 - Mounting Bracket Clearances Attac
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INSTALLATION 11 Installing Heater To Wall 20,000 Btu/Hr Models (5.9 kW) (Cont.) 11 Mounting Heater To Floor With Optional Floor Kit [20,000 Btu/Hr (5.9 kW) Only] INSTALLATION Continued Placing Heater On Mounting Bracket MOUNTING HEATER TO FLOOR WITH OPTIONAL FLOOR KIT [20,000 BTU/HR (5.9 KW) ONLY] 1. Locate two horizontal slots on back panel of heater. 2. Place heater onto mounting bracket. Slide horizontal slots onto Mounting Base Feet to Heater stand-out tabs on mounting bracket. 1. Lay heater
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INSTALLATION Connecting To Gas Supply 12 INSTALLATION Continued Installation must include equipment shutoff valve, union, and plugged CONNECTING TO GAS SUPPLY 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 22). WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to the pres- IMPORTANT: Install an equipment shutoff valve in an accessible sure regulator. location. The equipment shutoff valve is for
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INSTALLATION 13 Checking Gas Connections 13 INSTALLATION Continued 2. Open main gas valve located on or near gas meter for natural CHECKING GAS CONNECTIONS gas or open propane/LP supply tank valve. 3. Make sure control knob of heater is in the OFF position. WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all leaks 4. Check all joints from equipment shutoff valve to control valve at once. (see Figures 24 and 25). Apply a noncorrosive leak detection f
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OPERATING HEATER For Your Safety Read Before Lighting 14 Lighting Instructions OPERATING HEATER 6. With control knob pressed in, push down and release igni- FOR YOUR SAFETY READ tor button. This will light pilot. The pilot is attached to the BEFORE LIGHTING front of burner. The pilot can be seen through the glass panel. If needed, keep pressing ignitor button until pilot lights. WARNING: If you do not follow these instructions Note: If pilot does not stay lit, refer to Troubleshooting, exactly,
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OPERATING HEATER 15 To Turn Off Gas To Appliance 15 Thermostat Control Operation (Thermostat Models Only) Manual Lighting Procedure INSPECTING BURNER Pilot Flame Pattern Burner Flame Pattern OPERATING HEATER INSPECTING BURNER Continued Check pilot flame pattern and burner flame pattern often. TO TURN OFF GAS PILOT FLAME PATTERN TO APPLIANCE Figure 29 shows a correct pilot flame pattern. Figure 30 shows an incorrect pilot flame pattern. The incorrect pilot flame is not Shutting Off Heater touchin
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CLEANING AND MAINTENANCE ODS/Pilot and Burner Orifice 16 Burner Pilot Air Inlet Hole Cabinet CLEANING AND MAINTENANCE Pilot Assembly WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burner, and circulating air passageways of heater clean. In- spect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Pilot Air Inlet Heater may need more frequent cleaning due to exces- Figure 33 - Pilot Inlet Air Hole sive
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TROUBLESHOOTING 17 17 TROUBLESHOOTING Note: For additional help, visit DESA’s CAUTION: Never use a wire, WARNING: Turn off heater technical service web site at needle, or similar object to clean and let cool before servicing. Only www.desatech.com. ODS/pilot. This can damage ODS/ a qualified service person should pilot unit. Note: All troubleshooting items are listed in service and repair heater. order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is pressed, there i
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TROUBLESHOOTING 18 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Burner does not light after ODS/pilot is lit 1. Burner orifice is clogged 1. Clean burner orifice (see Cleaning and Maintenance, page 16) or replace burner orifice 2. Inlet gas pressure is too low 2. Contact local natural or propane/LP gas company Delayed ignition of burner 1. Manifold pressure is too low 1. Contact local natural or propane/LP gas company 2. Burner orifice is clogged 2. Clean burner orifice (see
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TROUBLESHOOTING 19 19 TROUBLESHOOTING Continued WARNING: If you smell gas • Shut off gas supply. • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. • 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. IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint remover, ci
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ILLUSTRATED PARTS BREAKDOWN 20 Models GCP6 and GCN6 ILLUSTRATED PARTS 22 BREAKDOWN 23 21 24 MANUAL CONTROL MODELS 27 GCP6 AND GCN6 20 10 16 13 14 12 25 10 4 26 11 15 18 7 9 19 6 3 17 5 1 8 2 1 PILOT For more information, visit www.desatech.com For more information, visit www.desatech.com 112157-01A
