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110021-01N

15

Installation Items Needed

Before installing heater, make sure you have the 

items listed below.

•  external regulator (supplied by installer)

•  piping (check local codes)

•  sealant (resistant to propane/LP gas)

•  equipment shutoff valve *

•  test gauge connection *

•  sediment trap

•  tee joint

•  pipe wrench

* A CSA design-certified equipment shutoff valve 

with 1/8" NPT tap is an acceptable alternative to 

test gauge connection. Purchase the optional CSA 

design-certified equipment shutoff valve from your 

dealer. See 

Accessories

, page 41.

For propane/LP gas, the installer must supply an 

external regulator. The external regulator will 

reduce incoming gas pressure. You must reduce 

incoming gas pressure to between 11 and 14 inches 

of water. If you do not reduce incoming gas pres-

sure, heater regulator damage could occur. Install 

external regulator with the vent pointing down 

as shown in Figure 13. Pointing the vent down 

protects it from freezing rain or sleet.

 CAUTION: Use only new, black 

iron or steel pipe. Internally-tinned 

copper  tubing  may  be  used  in 

certain  areas.  Check  your  local 

codes. Use pipe of 1/2" diameter or 

greater to allow proper gas volume 

to heater. If pipe is too small, undue 

loss of volume will occur.

INSTALLATION

Continued

Figure 13 - External Regulator With Vent 

Pointing Down

Installation must include a equipment shutoff valve, 

union and plugged 1/8" NPT tap. Locate NPT tap 

within reach for test gauge hook up. NPT tap must 

be upstream from heater (see Figure 14 or 15, page 

16, depending on your model).

IMPORTANT:

 Install equipment shutoff valve in an 

accessible location. The main gas valve is for turn-

ing on or shutting off the gas to the appliance.

Check your building codes for any special re-

quirements for locating equipment shutoff valve 

to fireplaces.

Apply  pipe  joint  sealant  lightly  to  male  NPT 

threads. This will prevent excess sealant from 

going into pipe. Excess sealant in pipe could result 

in clogged heater valves.

  WARNING:  Use  pipe  joint 

sealant that is resistant to liquid 

petroleum (LP) gas. 

We recommend that you install sediment trap 

in supply line as shown in Figure 14 or 15, page 

16, depending on your model. Locate sediment 

trap where it is within reach for cleaning. Install 

in piping system between fuel supply and heater. 

Locate sediment trap where trapped matter is not 

likely to freeze. A sediment trap traps moisture and 

contaminants. This keeps them from going into 

heater controls. If sediment trap is not installed or is 

installed wrong, heater may not run properly.

 CAUTION: Avoid damage to 

regulator. Hold gas regulator with 

wrench when connecting it to gas 

piping  and/or  fittings  (Thermo-

stat-Controlled Models Only).

 CAUTION: Avoid damage to 

gas  control.  Hold  gas  control 

with  wrench  when  connecting 

it  to  gas  piping  and/or  fittings 

(Remote-Ready Models Only).

Propane/LP 
Supply Tank

External 
Regulator

Vent 
Pointing 
Down

Summary of Contents for VRL24NR

Page 1: ...hbor 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 o...

Page 2: ...as supplier WARNING This is an unvented gas fired heat er It uses air oxygen from the room in which it is installed Provisions for adequate combustion and ventilation air must be provided Refer to Air...

Page 3: ...anual for reference It is your guide to safe and proper operation of this fireplace WARNING Any change to this heater or its controls can be dangerous WARNING Do not use a blower insert heat exchanger...

Page 4: ...with pro pane LP models do not use propane LP fuel tank of less than 100 lb capacity 20 Provide adequate clearances around air openings Keep the appliance area clear and free from combustible ma teri...

Page 5: ...y MA 02269 Note Where listed vented decorative logs are required thermostat models are not permitted Product Identification Base Assembly Piezo Ignitor Front and Rear Burner Control Knob Selector Swit...

Page 6: ...ARNING This heater shall not be installed in a confined space or unusually tight con struction unless provisions are provided for adequate combus tionandventilationair Readthe following instructions t...

Page 7: ...ireplace plus any adjoining rooms with doorless pas sageways or ventilation grills between the rooms 1 Determine the volume of the space length x width x height Length x Width x Height __________cu ft...

Page 8: ...ovide adequate combustion and ventilation air byoneofthemethodsdescribed in the National Fuel Gas Code ANSIZ223 1 NFPA54Section5 3 or applicable local codes VENTILATION AIR Ventilation Air From Inside...

Page 9: ...may cause pilot outage or sooting Use a heat resistant sealant Do not seal chimney flue damper INSTALLATION Continued WARNING Never install the heater in a bedroom or bathroom unless installed as a v...

Page 10: ...tc must be at least 1 2 inch thick With sheet metal you must have noncombustiblematerialbehindit Noncombustible material must extend at least 8 inches up for all models If noncombustible material is l...

Page 11: ...l clearances you must also meet required clearances between fireplace opening and mantel shelf If you do not meet the clearances listed below you will need a hood Determining Minimum Mantel Clearance...

Page 12: ...hese tem peratures meet the requirement ofthenationalproductstandard Follow all minimum clearances shown in this manual NOTICE Ifyourinstallationdoes not meet the minimum clear ances shown you must do...

Page 13: ...r vented operation If reasons number 1 or 2 above apply to you you must permanently open chimney flue damper You must install the damper clamp accessory to order see Accessories page 41 This will insu...

Page 14: ...refully remove logs without moving heater base 7 Mark screw locations through one hole on each side of the mounting bracket see Figure 12 If installing in a brick bottom fireplace mark screw locations...

Page 15: ...t shutoff valve union and plugged 1 8 NPT tap Locate NPT tap within reach for test gauge hook up NPT tap must be upstream from heater see Figure 14 or 15 page 16 depending on your model IMPORTANT Inst...

Page 16: ...e LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air 4 Check all joints of gas supply piping system Apply a commercial leak detection solution to all...

Page 17: ...LP supply tank valve 3 Make sure control knob of heater is in the OFF position 4 Check all joints from equipment shutoff valve to thermostat gas valve Thermostat Controlled Models or control valve Rem...

Page 18: ...screws are in place and straight Models CSG3924NT CSG3924PT CSG3924NR CSG3924PR CTB3924NT CTB3924PT CTB3924NR CTB3924PR CSG3930NR and CSG3930PR 1 Place log 1 ember bed onto base over align ment screw...

Page 19: ...dels VRL24NR VRL24PR VRL30NR VRL30PR VRL24NT VRL24PT VRL30NT and VRL30PT 1 Place log 1 ember bed onto base over log alignment screws to the left of front burner and behind middle burner Log 1 will sit...

Page 20: ...You must operate this heater with a fireplace screen in place Make sure fireplace screen is closed before run ning heater NOTICE Duringinitialoperation of new heater burning logs will give off a pape...

Page 21: ...ntil repairs are made light pilot with match To light pilot with match see Manual Lighting Procedure page 22 7 Keep control knob pressed in for30 seconds after lighting pilot After 30 seconds release...

Page 22: ...with the chimney damper closed This will put all the heat into the room However there may be times you will desire the full flames of the HI heat setting but will find the heat output excessive You c...

Page 23: ...urn control knob counter clockwise 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 gas sup ply I...

Page 24: ...control knob to ON position Adjust flameadjustmentknobanywherebetweenHIand LO Slide the selector switch to the REMOTE position see Figure 33 Note The burner may light if hand held remote was on when...

Page 25: ...the hand held remote to control the room temperature If the hand held remote is misplaced obstructed or for any reason cannot transmit to the receiver the receiver will shut off the fireplace after 8...

Page 26: ...ocal computer store hardware store or home center may carry compressed air in a can You can use a vacuum cleaner in the blow position If using com pressed air in a can please follow the directions on...

Page 27: ...htly blow air through the air inlet hole The access hole for propane LP pilot is on the front of the burner carriage as shown in Figure 42 The access hole for natural pilot is behind the pilot bracket...

Page 28: ...en in stalled 5 Depleted gas supply propane LP only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When ignitor button is pressed there is no spark at ODS pilot When ig...

Page 29: ...l or pro pane LP gas company 2 Clean burner s see Cleaning and Maintenance page 26 or replace burner orifice s 3 Contact qualified service person 1 Clean burner see Cleaning and Maintenance page 26 or...

Page 30: ...oved from line Have gas line checked by local natural or propane LP gas company 3 Observe minimum installation clearances see page 8 4 Clean burners see Cleaning and Maintenance page 26 1 Turn heater...

Page 31: ...propane LP only 3 Locate and correct all leaks see Checking Gas Connec tions page 16 1 Open window and or door for ventilation 2 Contact local natural or pro pane LP gas company 3 Clean ODS pilot see...

Page 32: ...lace see Figure 45 for location If you have a factory built metal fireplace see Figure 46 for location If your fireplace has glass doors position sensing bulb directly behind door gap on right bottom...

Page 33: ...sitioning of Thermostat Sensing Bulb Continued O D S PILOT THERMOPILE PILOT THERMOCOUPLE IGNITOR VALVE THERMOCOUPLE CONNECTION PILOT OUT TPTH TP TH PIEZO SWITCH AUTO OFF ON gnitor Cable Thermopile Wir...

Page 34: ...11 2 2000 Z21 11 2 2000 Z21 11 2 2000 Z21 11 2 2000 For purpose of input adjustment 24 Remote Ready 30 Remote Ready Btu Variable 10 000 40 000 10 000 40 000 10 000 40 000 10 000 40 000 Type Gas Propan...

Page 35: ...03 01 Log Ember Bed 1 3 110105 01 110106 01 110107 01 111528 01 Log Right Front 1 4 110105 02 110106 02 110107 02 111528 02 Log Left Front 1 5 110105 03 110106 03 110107 03 111528 03 Log Back 1 6 1101...

Page 36: ...N 36 ILLUSTRATED PARTS BREAKDOWN Thermostat Controlled Models VRL24NT VRL24PT VRL30NT VRL30PT CSG3924NT CSG3924PT CTB3924NT CTB3924PT 1 16 17 2 18 12 28 24 27 27 27 27 27 27 8 8 7 9 13 5 6 19 20 4 14...

Page 37: ...159 04 097159 04 Piezo Ignitor 1 15 098271 10 098271 10 098271 10 098271 10 098271 10 098271 10 Ignitor Cable 1 16 099056 18 099056 21 099056 18 099056 21 099056 18 099056 21 Burner Orifice Injector B...

Page 38: ...N Remote Ready Models VRL24NR VRL24PR VRL30NR VRL30PR CSG3924NR CSG3924PR CTB3924NR CTB3924PR CSG3930NR CSG3930PR 1 16 2 18 11 22 Items 12 22 Natural Gas Models Only 12 20 28 24 32 32 32 32 32 32 7 27...

Page 39: ...056 21 099056 21 099056 18 099056 21 Burner Orifice Injector Back 1 17 101004 02 101004 02 101004 18 101004 18 101004 02 101004 18 Burner Orifice Injector Front 1 18 101004 11 101004 11 101004 13 1010...

Page 40: ...of this product If they can t supply original replacement part s call DESA Heating Products at 1 866 672 6040 for referral information When calling DESA Heating Products have ready model number of you...

Page 41: ...y also email your request to productsupport desaint com RECEIVER AND HAND HELD THERMOSTAT REMOTE CONTROL KIT HRC200 For all Remote Ready Models Allows the gas log heater to be operated in a manually o...

Page 42: ...__ ______________________________________________________ ______________________________________________________ ______________________________________________________ ________________________________...

Page 43: ...__ ______________________________________________________ ______________________________________________________ ______________________________________________________ ________________________________...

Page 44: ...2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 www desatech com 110021 01 Rev N 04 06 NOT A UPC 110021 01...

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