background image

www.desatech.com

123167-01D

23

Figure 31 - Injector Holder On Outlet 

Burner Tube

Burner Tube

Primary Air Inlet Holes 
(Shape of Holes May 
Vary by Model)

Injector Holder (May Be Brass or 
Aluminum Depending on Model)

Figure 32 - Pilot Inlet Air Hole

Pilot 
Assembly

Pilot Air 
Inlet Hole

1.  Shut off unit, including pilot. Allow unit to 

cool for at least thirty minutes.

2.  Inspect burner, pilot and primary air inlet 

holes on injector holder for dust and dirt 
(see Figure 31).

3.  Blow air through ports/slots and holes in 

burner.

4.  Check  injector  holder  located  at  end  of 

burner  tube  again.  Remove  any  large 

particles of dust, dirt, lint or pet hair with 
a soft cloth or vacuum cleaner nozzle.

5.  Blow air into primary air holes on injector 

holder.

6.  In case any large clumps of dust have now 

been pushed into burner, repeat steps 3 

and 4.

Clean pilot assembly also. A yellow tip on pilot 
flame indicates dust and dirt in pilot assembly. 
There is a small pilot air inlet hole about 2" 
from where pilot flame comes out of pilot as

-

sembly (see Figure 32). With unit off, lightly 
blow air through air inlet hole. You may blow 
through a drinking straw if compressed air is 

not available.

cLEANING AND MAINTENANcE

Continued

LOGS

•  If you remove logs for cleaning, refer to 

Install-

ing Logs,

 page 17, to properly replace logs.

•  Replace log(s) if broken or chipped (dime-

sized or larger).

BURNER pRIMARY AIR HOLES

Air is drawn into burner through the 8 holes 
in brass fitting at entrance to burner. These 
holes may become blocked with dust or lint. 

Periodically inspect these holes for any block-
age and clean as necessary. Blocked air holes 

will create soot.

MAIN BURNER

Periodically  inspect  all  burner  flame  holes 
with heater running. All slotted burner flame 
holes should be open yellow flame present. 
All round burner flame holes should be open 
with a small blue flame present. Some burner 
flame holes may become blocked by debris 
or  rust,  with  no  flame  present.  If  so,  turn 
off  heater  and  let  cool.  Remove  blockage, 
blocked burner flame holes will create soot.

VENTING

Once every year a qualified agency or certified 
chimney sweep should examine and clean the 
venting system of the fireplace.

SPEcIFIcATIONS

HD18PRA, HD24PRA

•  Rating (Variable): 20,000/36,000 Btu/Hr
•  Type Gas: Propane/LP
•  Ignition: Piezo
•  Pressure Manifold: 10.0" W.C.
•  Inlet Gas Pressure (in. of water):
  Maximum 14" W.C., Minimum* 11" W.C.
•  Shipping Weight: 

27 lbs.

* For input adjustment

HD18NRA, HD24NRA

•  Rating (Variable): 23,000/37,000 Btu/Hr
•  Type Gas : Natural Gas
•  Ignition: Piezo
•  Pressure Manifold: 4.5" W.C.
•  Inlet Gas Pressure (in. of water):
  Maximum 10.5" W.C., Minimum* 5" W.C.
•  Shipping Weight: 

29 lbs.

* For input adjustment

Summary of Contents for HD18NRA

Page 1: ...o not use any phone in your building Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installat...

Page 2: ...vented 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 for Combustion and Ven tilation...

Page 3: ...t even though no odor exists Make certain you read and understand all warnings Keep this manual for reference It is your guide to safe and proper operation of this fireplace WARNING Any change to this...

Page 4: ...l operation slight smok ing could occur due to log curing and heater burning manufacturing residues 10 To prevent the creation of soot follow the instructions in Cleaning and Maintenance page 22 11 Be...

Page 5: ...e data plates from the grate as sembly The data plates contain important warranty and safety information 1 Remove logs and heater base assembly from carton Note Do not pick up heater base assem bly by...

Page 6: ...ally tight construction you must provide additional fresh air Unusually tight construction is defined as construction where a walls and ceilings exposed to the out side atmosphere have a continuous wa...

Page 7: ...an the maximum Btu Hr the space can support You must provide additional fresh air Your options are as follows A Rework worksheet adding the space of an adjoining room If the extra space provides an un...

Page 8: ...openings for inlet or outlet air into attic if attic has a thermo stat controlled power vent Heated air entering the attic will activate the power vent AIR FOR COMBUSTION AND VENTILATION Continued WAR...

Page 9: ...can provide greater clearances from floor ceiling and adjoining wall MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Side Wall 16 Ceiling 42 Front 36 Measured at 13 Depth Carefully follow the ins...

Page 10: ...mantels above the firebox may become hot to the touch If installed properly these tem peratures meet the requirement ofthenationalproductstandard Follow all minimum clearances shown in this manual Fi...

Page 11: ...fireplace with a working flue and con structed of noncombustible material For Massachusetts Residents Only Instal lation of this gas log set as a vented appliance in the Commonwealth of Massachusetts...

Page 12: ...side to side in fireplace 6 Carefully remove logs without moving heater base Heater Gas Regulator Flexible Gas Hose if allowed by local codes Figure 10 Attaching Flexible Gas Hose to Heater Gas Regula...

Page 13: ...ral gas units never connect heater to private non utility gas wells This gas is commonly known as wellhead gas Installation Items Needed Before installing heater make sure you have the items listed be...

Page 14: ...lding codes for any special requirements 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 E...

Page 15: ...e from gas supply piping Pressures in excess of 1 2 psig will dam age heater regulator 2 Cap off open end of gas pipe where equip ment shutoff valve was connected 3 Pressurize supply piping system by...

Page 16: ...was removed from fireplace be fore installation of remote accessory see Installing Heater BaseAssembly page 12 to reinstall heater into fireplace Test gas connections for leaks see Checking Gas Conne...

Page 17: ...check to ensure that no flame comes in contact with any log WiththeheatersettoHigh check toseeifflamescontactanylog If so reposition logs according to the log installation instructions in this manual...

Page 18: ...ust be lighted by hand When lighting the pilot follow these instructions exactly B BEFORE LIGHTING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is he...

Page 19: ...Continued 5 Press in control knob and turn counter clockwise to the PILOT position see Figure 24 The ignitor will spark once Keep control knob pressed in for 5 seconds If control knob does not pop up...

Page 20: ...llow steps 1 through 5 under Lighting Instructions beginning on page 19 2 Press control knob and light pilot with match 3 Keep control knob pressed in for 30 sec onds after lighting pilot After 30 sec...

Page 21: ...d remote control 2 Press AUTO button to select this mode 3 Set desired room temperature by pressing TEMP or buttons 4 Press POWER and LOCK buttons to gether to turn off fireplace Note Do not leave han...

Page 22: ...ame present If so turn off heater and let cool Remove blockage blocked burner flame holes will create soot Cleaning and Maintenance WARNING Turn off heater and let cool before cleaning CAUTION You mus...

Page 23: ...uremovelogsforcleaning refertoInstall ing Logs page 17 to properly replace logs Replace log s if broken or chipped dime sized or larger BURNER PRIMARY AIR HOLES Air is drawn into burner through the 8...

Page 24: ...on 4 Air in gas lines when in stalled 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When control knob is pressed in and turned t...

Page 25: ...ropane LP gas company 4 Change batteries see Mil livolt Valve Battery Pack page 17 1 Contact local natural or propane LP gas company 2 Clean burner see Cleaning and Maintenance page 22 or replace burn...

Page 26: ...propane LP gas company 3 Observe minimum instal lation clearances see page 9 4 Clean burner see Cleaning and Maintenance page 22 or replace burner orifice 1 Turn heater off when us ing furniture polis...

Page 27: ...cking Gas Con nections page 14 1 Open window and or door for ventilation 2 Contact local natural or propane LP gas company 3 Clean ODS pilot see Cleaning and Maintenance page 22 4 Change batteries see...

Page 28: ...e factory Parts Not Under Warranty Contact authorized dealers of this product If they can t supply original replacement part s either contact your nearest Parts Central see page 29 or call DESA Heatin...

Page 29: ...ce 2444 N 5th Street Hartsville SC 29550 843 332 0191 Parts Department Cans Unlimited Inc P O Box 645 Taylor SC 29687 0013 All States 803 879 3009 1 800 845 5301 cuisales aol com Those Heater Guys 255...

Page 30: ...www desatech com 123167 01D 30 Parts MODELS HD18NRA HD18PRA HD24NRA and HD24PRA 1 24 23 2 14 18 10 25 9 12 16 18 20 15 4 7 6 8 11 19 5 13 3 21e 21c 21a 21d 21b...

Page 31: ...1 12 122190 01DD Remote Sensor Bracket 1 13 099387 08 Pilot Tube 1 14 122145 01 Battery Holder 1 15 098354 01 Control Knob 1 16 M11084 26 Screw HWH AB 10 16 x 0 38 7 17 098304 01 Screw PPH AB 10 16 x...

Page 32: ...proved by DESA Heating LLC Warranty parts must be obtained through authorized dealers of this prod uct and or DESA Heating LLC who will provide original factory replacement parts Failure to use origin...

Reviews: