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Desa CRB3624NR Owner's Operation And Installation Manual

Unvented vent-free
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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
Also Design-Certified As Vented Decorative Appliances
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable
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.
• 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.
— Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
For more information, visit www.desatech.com
REMOTE-READy MODELS
CRB3624NR AND CRB3624PR

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  • Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL REMOTE-READy MODELS CRB3624NR AND CRB3624PR Also Design-Certified As Vented Decorative Appliances WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Safety ..............2 Cleaning and Maintenance ........ 22 Unpacking............5 Wiring Diagram ..........23 Product Identification ........... 5 Specifications ............ 23 Local Codes............5 Troubleshooting ..........24 Optional Remote Control Accessories ....5 Parts ..............28 Product Features ..........6 Replacement Parts ..........
  • Page 3 SAFETy Continued WARNING: Do not allow fans WARNING: This product contains and/or generates to blow directly into the fireplace. chemicals known to the state Avoid any drafts that alter burner of California to cause cancer or flame patterns. Ceiling fans can birth defects or other reproduc- create drafts that alter burner flame patterns.
  • Page 4 SAFETy Continued 1. This appliance is only for use with the type 9. Before using furniture polish, wax, carpet of gas indicated on the rating plate. This cleaner or similar products, turn heater off. If appliance is not convertible for use with heated, the vapors from these products may other gases.

  • Page 5: Unpacking

    UNPACkING Note: Do not pick up heater base assem- CAUTION: Do not remove the bly by burners. This could damage heater. data plates from the grate as- Always handle base assembly by grate. sembly. The data plates contain 2. Remove all protective packaging applied to logs and heater for shipment.

  • Page 6: Product Features

    PRODUCT FEATURES OPERATION SAFETY DEVICE This heater is clean burning. It requires no This heater has a pilot with an Oxygen Deple- outside venting. There is no heat loss out a tion Sensing (ODS) safety shutoff system. The vent or up a chimney. Heat is generated by ODS/pilot is a required feature for vent-free both realistic flames and glowing coals.
  • Page 7 AIR FOR COMBUSTION AND VENTILATION Continued See Ventilation Air From Outdoors, page 8. Gas furnace __________ Btu/Hr If your home does not meet all of the Vented gas heater __________ Btu/Hr three criteria above, proceed to Determin- Gas fireplace logs __________ Btu/Hr ing Fresh-Air Flow For Heater Location, Other gas appliances* + _________ Btu/Hr...

  • Page 8: Installation

    AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR Ventilation Air From Outdoors Provide extra fresh air by using ventilation Ventilation Air From Inside Building grills or ducts. You must provide two perma- This fresh air would come from an adjoining nent openings: one within 12"...
  • Page 9 INSTALLATION Continued WARNING: Before installing CAUTION: This heater cre- in a solid fuel burning fireplace, ates warm air currents. These the chimney flue and firebox currents move heat to wall sur- must be cleaned of soot, creo- faces next to heater. Installing sote, ashes and loose paint by heater next to vinyl or cloth wall a qualified chimney cleaner.
  • Page 10 INSTALLATION Continued Minimum Noncombustible Material LOG SIZING REQUIREMENTS Clearances Minimum Firebox Size If Not Using Mantel Front Rear Note: If using a mantel proceed to If Using Height Depth Width Width* Mantel. If not using a mantel, follow the infor- 17"...
  • Page 11 INSTALLATION Continued hind it. Noncombustible material must extend MANTEL CLEARANCES at least 8" up. If noncombustible material is In addition to meeting noncombustible mate- less than 12", you must install the fireplace rial clearances, you must also meet required hood accessory. Even if noncombustible clearances between fireplace opening and material is more than 12", you may need the mantel shelf.
  • Page 12 INSTALLATION Continued FLOOR CLEARANCES 1. The fireplace does not meet the clearance to combustibles requirements for vent- A. If installing appliance on the floor level, free operation. you must maintain the minimum distance 2. State or local codes do not permit vent- of 14"...
  • Page 13 INSTALLATION Continued INSTALLING HEATER BASE 3. Mark screw locations through holes in front panel of base (see Figure 12). If ASSEMBLY installing in a brick-bottom fireplace, mark screw locations in mortar joint of bricks. WARNING: You must secure 4. Remove heater base from fireplace. this heater to fireplace floor.
  • Page 14 INSTALLATION Continued damage could occur. Install external regulator CAUTION: Never connect with the vent pointing down as shown in Figure 13. Pointing the vent down protects it from propane/LP fireplace directly freezing rain or sleet. to the propane/LP supply. This heater requires an external regu- CAUTION: Use only new, black lator (not supplied).
  • Page 15 INSTALLATION Continued ment shutoff valve from gas supply piping WARNING: Use pipe joint system. Pressures in excess of 1/2 psig will damage heater regulator. sealant that is resistant to liquid 2. Cap off open end of gas pipe where equip- petroleum (LP) gas.
  • Page 16 INSTALLATION Continued 4. Check all joints from equipment shutoff 2. Carefully remove logs and set aside. valve to gas control (see Figures 16 or 17). 3. Locate mounting screws on sides of heat- Apply noncorrosive leak detection fluid to er base assembly and remove screws. Set all joints.
  • Page 17 INSTALLATION Continued 9-Volt Battery Battery Cover Remote Control Unit Battery Clip Terminal Wires 9-Volt Battery Battery Housing Figure 22 - Installing Battery in Hand-Held Remote Control Unit INSTALLING LOGS Terminal Push Wires Button WARNING: Failure to position Bracket Clips the parts in accordance with these Figure 20 - Installing Remote Receiver diagrams or failure to use only White Wire...

  • Page 18: Operation

    OPERATION FOR YOUR SAFETY READ LIGHTING BEFORE LIGHTING INSTRUCTIONS WARNING: If you do not fol- WARNING: low these instructions exactly, • If fireplace has glass doors, a fire or explosion may result never operate this heater with causing property damage, per- glass doors closed.
  • Page 19 OPERATION Continued 5. Wait five (5) minutes to clear out any gas. WARNING: Make sure the se- Then smell for gas, including near the lector switch is in the OFF position floor. If you smell gas, STOP! Follow “B” in the safety information, page 18. If you when you are away from home for don’t smell gas, go to the next step.
  • Page 20 OPERATION Continued MANUAL LIGHTING To Lock press both buttons on hand-held remote control until light stops flashing. Hand- PROCEDURE held remote control is now locked. If the fire 1. Follow steps 1 through 6 under Lighting is on it will be turned off automatically. In the Instructions, page 18.

  • Page 21: Inspecting Burners

    OPERATION Continued Manual Mode Safety Features 1. Press the POWER and LOCK buttons When away from home for an extended period together to turn on the hand-held remote of time or as a child safety feature to prevent control. accidental ignition of the fireplace, the receiver ON/OFF/REMOTE switch should be in the 2.

  • Page 22: Cleaning And Maintenance

    INSPECTING BURNERS Continued FRONT BURNER FLAME PATTERN If front burner flame pattern is incorrect, as shown in Figure 33 Figure 32 shows correct front burner flame • turn heater off (see To Turn Off Gas to Ap- pattern. Figure 33 shows incorrect front pliance, page 19) burner flame pattern.

  • Page 23: Wiring Diagram

    Blue TPTH Gas Control TPTH TP Thermopile White SPECIFICATIONS CRB3624PR CRB3624NR • Rating (Variable): 25,000/36,000 Btu/Hr • Rating (Variable): 25,000/36,000 Btu/Hr • Type Gas: Propane/LP • Type Gas: Natural • Ignition: Electronic • Ignition: Electronic • Manifold Pressure: 7.9" W.C.

  • Page 24: Troubleshooting

    TROUBLESHOOTING WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle or similar object to clean ODS/pilot. This can damage ODS/pilot unit. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY...
  • Page 25 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame 1. Control knob not fully 1. Press in control knob fully goes out when control knob pressed in is released 2. Control knob not pressed in 2. After ODS/pilot lights, keep long enough control knob pressed in 30 seconds...
  • Page 26 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Slight smoke or odor during 1. Residues from manufac- 1. Problem will stop after a few initial operation turing processes and logs hours of operation curing Heater produces a whistling 1. Turning control knob to HI 1.
  • Page 27 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. Fol- low the gas supplier’s instructions.

  • Page 28: Parts

    PARTS MODELS CRB3624NR AND CRB3624PR www.desatech.com 120044-01D...

  • Page 29: Parts List

    PARTS LIST REMOTE-READY VARIABLE CONTROL MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 30 of this manual. NO. PART NO. DESCRIPTION QTY. Ramp Burner Assembly • •...

  • Page 30: Replacement Parts

    • how heater was malfunctioning • purchase date TECHNICAL SERVICE You may have further questions about installa- You can also visit DESA Heating, LLC’s web tion, operation, or troubleshooting. If so, con- site at www.desatech.com. tact DESA Heating, LLC at 1-866-672-6040.

  • Page 31: Accessories

    WALL-MOUNT THERMOSTAT dealer. If they can not supply these accessories SWITCH - GWMT1 call DESA Heating, LLC at 1-866-672-6040 for For all models. The desired comfort setting information. You can also write to the address can be selected on the wall thermostat and listed on the back page of this manual.

  • Page 32: Warranty

    This is DESA Heating, LLC’s exclusive warranty, and to the full extent allowed by law; this express warranty excludes any and all other warranties, express or implied, written or verbal and limits the duration of any and all implied warranties, including warranties of merchantability and fitness for a particular purpose to one (1) year on new products and 30 days on factory reconditioned products from the date of first purchase.

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Crb3624pr

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