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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
Remote-Ready Models VUL18/24/30/36(N,P)R and HRB3624(N,P)R
VUL18/24/30/36(N,P)T and HRB3624(N,P)T
Remote-Ready Models 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.
Thermostatically-Controlled Models
For more information, visit www.desatech.com
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Related Manuals for Desa HRB3624NR
Summary of Contents for Desa HRB3624NR
- Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL Remote-Ready Models VUL18/24/30/36(N,P)R and HRB3624(N,P)R Thermostatically-Controlled Models VUL18/24/30/36(N,P)T and HRB3624(N,P)T Remote-Ready Models 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.
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Page 2: Table Of Contents
TAbLE OF CONTENTS Safety Informa ion ..........2 Wiring Diagram ..........27 Unpacking............4 Troubleshooting ..........28 Product Identification ........... 5 Optional Positioning of Thermostat Local Codes............5 Sensing Bulb ..........32 Optional Remote Control Accessories ....5 Specifications ............ 33 Product Features .......... - Page 3 SAFETy INFORMATION WARNING: Do not allow fans Continued to blow directly into the fireplace. Avoid any drafts that alter burner WARNING: This product con- flame patterns. Ceiling fans can tains and/or generates chemicals create drafts that alter burner known to the state of California flame patterns.
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Page 4: Unpacking
SAFETy INFORMATION See Air for Combustion and Ventilation, page 6. If heater keeps shutting off, see Continued Troubleshooting, page 28. 1. This appliance is only for use with the type 11. Do not run heater of gas indicated on the rating plate. This •... -
Page 5: Product Identification
PRODUCT State of Massachusetts: The installa- IDENTIFICATION tion must be made by a licensed plumber or gas fitter in the Commonwealth of Model HRB Massachusetts. Series Logs Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit. -
Page 6: Air For Combustion And Ventilation
AIR FOR COMbUSTION Unusually tight construction is defined as construction where: AND VENTILATION a. walls and ceilings exposed to the out- side atmosphere have a continuous WARNING: This heater shall water vapor retarder with a rating of not be installed in a confined one perm (6 x 10 kg per pa-sec-m ) or... - Page 7 AIR FOR COMbUSTION A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an AND VENTILATION unconfined space, remove door to adjoining Continued room or add ventilation grills between rooms. See Ventilation Air From Inside Building. Space: Includes the room in which you will install B.
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Page 8: Installation
AIR FOR COMbUSTION NOTICE: State or local codes may AND VENTILATION only allow operation of this appli- Continued ance in a vented configuration. Check your state or local codes. Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. - Page 9 INSTALLATION LOG SIZING REQUIREMENTS Continued Minimum Firebox Size Front Rear Height Depth Size Width Width* CAUTION: This heater cre- 18" 17" 14" 20" 14" ates warm air currents. These 24" 17" 14" 26" 18" currents move heat to wall sur- 30"...
- Page 10 INSTALLATION Noncombustible Requirements for Safe Material Continued Installation Distance (A) 12" or more Noncombustible mate- NOTICE: Manual control heaters rial OK. may be used as a vented product. Between 8" and 12" 24", 30" or 36" Models: If so, you must always run heater Install fireplace hood with chimney flue damper open.
- Page 11 INSTALLATION Mantel Shelf 12" Continued Underside of 10" Mantel Shelf 8" NOTICE: Surface temperatures 6" " of adjacent walls and mantels All minimum distances are Minimum become hot during operation. in inches Noncombustible Material Walls and mantels above the Log Sets 8"...
- Page 12 INSTALLATION Damper Clamp Continued Damper INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED Damper OPERATION Clamp Note: When used as a vented heater, ap- pliance must be installed only in a solid-fuel burning fireplace with a working flue and Damper Damper constructed of noncombustible material. For Massachusetts Residents Only: Instal- lation of this gas log set as a vented appliance in the Commonwealth of Massachusetts re-...
- Page 13 INSTALLATION Heater Gas Regulator Continued IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not Flexible Gas Hose (if work properly. For thermostat models, avoid allowed by local codes) damage to thermostat bulb. Avoid nicks or sharp bends in thermostat bulb wire.
- Page 14 INSTALLATION For propane/LP units, the installer must supply an external regulator. The external Continued regulator will reduce incoming gas pressure. CONNECTING TO GAS SUPPLY You must reduce incoming gas pressure to between 11" and 14" of water. If you do not re- WARNING: This appliance duce incoming gas pressure, heater regulator requires a 1/2"...
- Page 15 INSTALLATION CSA Design-Certified PROPANE/LP Equipment Shutoff Valve Continued From External With 1/8" NPT Tap* Regulator (11" W.C.** WARNING: Use pipe joint Approved Flex ble to 14" W.C. sealant that is resistant to liquid Gas Hose (if Pressure) allowed by local petroleum (LP) gas.
- Page 16 INSTALLATION Equipment Propane/LP Shutoff Valve Supply Tank Continued PRESSURE TESTING GAS SUPPLY PIPING SYSTEM Test Pressures In Excess Of 1/2 PSIG (3.5 kPa) 1. Disconnect appliance with its appliance main gas valve (control valve) and equip- ment shutoff valve from gas supply piping Thermostat Gas system.
- Page 17 INSTALLATION 10. If heater was removed from fireplace be- fore installation of remote accessory, see Continued Installing Heater Base Assembly on page INSTALLING OPTIONAL REMOTE 12 to reinstall heater into fireplace. Test ACCESSORIES gas connection for leaks (see Checking Gas Connections, page 15). Installing Remote Receiver 11.
- Page 18 INSTALLATION Each log is marked with a number. These numbers will help you identify the log when Continued installing. It is very important to install these Installing Batteries for Remote Receiver logs exactly as instructed. Do not modify logs. and Hand Held Remote Control Only use logs supplied with heater.
- Page 19 INSTALLATION 8. For VUL36 models, position left and right control cover logs as shown in Figure 28. Continued These may be placed as desired to hide 6. Place middle left log over front left and controls. bottom logs as show in Figure 27. Be Left Small sure hole in middle left log seats over pin Front Log...
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Page 20: Operating Heater
OPERATING HEATER LIGHTING INSTRUCTIONS THERMOSTAT-CONTROLLED MODELS WARNING: • If fireplace has glass doors, FOR YOUR SAFETY never operate this heater with READ BEFORE LIGHTING glass doors closed. If you op- WARNING: If you do not fol- erate heater with doors closed, low these instructions exactly, heat buildup inside fireplace a fire or explosion may result... - Page 21 OPERATING HEATER Ignitor Electrode Pilot Continued Thermocouple Burner 5. Turn control knob counterclockwise to the PILOT position. Press in control knob for five (5) seconds (see Figure 30). Note: You may be running this heater for the first time after hooking up to Figure 31 - Pilot gas supply.
- Page 22 OPERATING HEATER LIGHTING INSTRUCTIONS Continued WARNING: REMOTE-READy MODELS • If fireplace has glass doors, FOR YOUR SAFETY never operate this heater with READ BEFORE LIGHTING glass doors closed. If you op- erate heater with doors closed, WARNING: If you do not fol- heat buildup inside fireplace low these instructions exactly, will cause glass to burst.
- Page 23 OPERATING HEATER 11. Set flame adjustment knob to any level between HI and LO. Continued 12. You may shut off the burners and 5. Wait five (5) minutes to clear out any gas. keep the pilot lit by doing one of the Then smell for gas, including near the following: floor.
- Page 24 OPERATING HEATER ON/OFF SERIES (MODEL HRC100) Continued Hold the control button on the hand-held remote until burner turns on. Hold the MANUAL LIGHTING control button again until burner turns off PROCEDURE (see Figure 36). 1. Follow steps 1 through 6 under Light- TO LOCK press both buttons on hand-held ing Instructions, pages 22 and 23.
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Page 25: Inspecting Burners
OPERATING HEATER Key Pad Lock Feature This feature allows the user to lock/unlock Continued the keypad on the hand-held remote in Manual Mode the MANU or AUTO mode to prevent inad- 1. Press the POWER and LOCK buttons vertent operation (i.e. children operating together to turn on the hand-held re- the hand-held remote control, etc.). -
Page 26: Cleaning And Maintenance
INSPECTING bURNERS CLEANING AND Continued MAINTENANCE FRONT BURNER FLAME PATTERN WARNING: Turn off heater Figure 40 shows correct front burner flame and let cool before cleaning. pattern. Figure 41 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of CAUTION: You must keep blue flame. -
Page 27: Wiring Diagram
CLEANING AND LOGS • If you remove logs for cleaning, refer to MAINTENANCE Installing Logs, page 18, to properly replace Continued logs. 3. Blow air through the ports/slots and holes • Replace log(s) if broken or chipped (dime- in the burner. sized or larger). -
Page 28: 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 29 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 30 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Yellow flame in front burner 1. Not enough air 1. Check burner(s) for dirt during burner combustion and debris. If found, clean burner(s) (see Cleaning and Maintenance, page 26) 2. Gas regulator defective 2.
- Page 31 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.
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Page 32: Optional Positioning Of Thermostat Sensing Bulb
OPTIONAL POSITIONING 3. The thermostat sensing bulb may be located to the lower right front side of OF THERMOSTAT fireplace. Determine location of sensing SENSING bULb bulb, but do not mount sensing bulb until step 4. If you have a masonry fireplace, (Thermostat-Controlled Models Only) see Figure 47 for location. -
Page 33: Specifications
• Inlet Gas Pressure (in. of water): Max - 14" W.C., Min* - 11" W.C. Glass Doors VUL24NT, VUL30NT, VUL36NT, HRB3624NT, VUL24NR, VUL30NR, VUL36NR HRB3624NR Figure 49 - Installing Thermostat Sensing Bulb Behind Glass Doors • Rating (Variable): 25,000/36,000 Btu/Hr • Type Gas: Natural •... - Page 34 ILLUSTRATED PARTS bREAkDOWN THERMOSTAT-CONTROLLED MODELS VUL18NT, VUL18PT, VUL24NT, VUL24PT, VUL30NT, VUL30PT, VUL36NT, VUL36PT, HRB3624NT AND HRB3624PT www.desatech.com 119426-01F...
- Page 35 PARTS LIST THERMOSTAT-CONTROLLED MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 41 of this manual. NO. PART NO. DESCRIPTION QTY. Ramp Burner Base • • • •...
- Page 36 ILLUSTRATED PARTS bREAkDOWN REMOTE-READY VARIABLE CONTROL MODELS VUL18NR, VUL18PR, VUL24NR, VUL24PR, VUL30NR, VUL30PR, VUL36NR, VUL36PR, HRB3624NR, HRB3624PR www.desatech.com 119426-01F...
- Page 37 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 41 of this manual. NO. PART NO. DESCRIPTION QTY. Ramp Burner Base • •...
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Page 38: Illustrated Parts Breakdown And Parts List
ILLUSTRATED PARTS bREAkDOWN AND PARTS LIST LOG MODELS VUL18NT, VUL18PT, VUL24NT, VUL24PT, VUL30NT, VUL30PT, VUL18NR, VUL18PR, VUL24NR, VUL24PR, VUL30NR, VUL30PR This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 41 of this manual. PART NUMBER VUL18NT VUL24NT... - Page 39 ILLUSTRATED PARTS bREAkDOWN AND PARTS LIST LOG MODELS VUL36NR, VUL36PR, VUL36NT AND VUL36PT This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 41 of this manual. PART NO. VUL36NT VUL36NR VUL36PT...
- Page 40 ILLUSTRATED PARTS bREAkDOWN AND PARTS LIST LOG MODELS HRB3624NT, HRB3624PT, HRB3624NR, HRB3624PR This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 41 of this manual. PART NO. DESCRIPTION...
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Page 41: Service Hints
For all models. Equipment shutoff valve with of your heater ready. 1/8" NPT tap. Fits 1/2" NPT pipe. You can also visit DESA Hearth Products’ technical services web site at www.desatech.com. REPLACEMENT PARTS Note: Use only original replacement parts. - Page 42 LAVA ROCK - GA6060 ACCESSORIES (Not Shown) Continued For all models. Order when additional rock is desired. (1.8 lb. bag) WALL-MOUNT THERMOSTAT SWITCH - GWMT1 (Not Shown) CLEANING KIT - CCK (Not Shown) For all Remote-Ready Models. The desired comfort setting can be selected on the wall For all models.
- Page 43 NOTES _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ 119426-01F www.desatech.com...
- Page 44 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 www.desatech.com 1-866-672-6040 119426-01 Rev. F 119426 01 03/07 NOT A UPC...
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