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Desa GWRn18A, Safety Information And Installation Manual, Page: 25 / 27

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Desa GWRn18A Safety Information And Installation Manual Download Page 25

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5

119346-01B

5

7

6

4

3

1

2

Burner Assembly

GWRP16TA and GWRN18TA

5

6

7

4

6

3 

1

2

KEY 
NO. PART NO.

DESCRIPTION

QTY.

1

110803-0*

ODS/Pilot

•

•

1

110803-03* 

ODS/Pilot

•

•

1

110186-01

Thermocouple Kit

•

•

•

•

1

3

099387-03

Pilot Tubing

•

•

1

099387-11

Pilot Tubing

•

•

1

4

104818-03

Outlet Tubing - Valve to Burner

•

•

1

104818-04

Outlet Tubing - Valve to Burner

•

•

1

5

09918-08

Burner

•

•

1

09918-09

Burner

•

•

1

6

099056-4

Injector - Plaque A or C

•

• 1-

099056-5

Injector - Plaque A or C

•

•

1-

7

099056-01

Injector - Plaque B

•

•

1

099056-0

Injector - Plaque B

•

•

1

* If replacing ODS pilot and your model is pre 2002, your part number 
will be 099059-07 for natural gas models, 103894-04 for propane/LP 
models.  The  thermocouple  part  number  will  be  098514-01  for  both 
gases. The electrode part number will be 098594-01 for both gases.

Burner Assembly

GWRP26TA and GWRN30TA

ILLUSTRATED PARTS bREAkDOWN AND PARTS LIST

BURNER ASSEMBLY MODELS GWRP16TA, GWRN18TA, GWRP26TA AND 
GWRN30TA

This  list  contains  replaceable  parts  used  in  your  heater.  When  ordering  parts,  follow  the 
instructions listed under 

Replacement Parts 

on page 26 of this manual.

G

W

R

N

30

TA

G

W

R

P

26

TA

G

W

R

N

18

TA

GWRP16T

A

Summary of Contents for GWRn18A

Page 1: ...asoline 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 Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and s...

Page 2: ...ncer or birth defects or other reproductive harm IMPORTANT Read this owner s manualcarefullyandcompletely before trying to assemble operate or service this heater Improper use of this heater can cause serious injury or death from burns fire explosion electrical shock and carbon monoxide poisoning DANGER Carbonmonoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of car bon mon...

Page 3: ... not place propane LP supply tank s inside any structure Locate propane LP supply tank s outdoors 3 This heater shall not be installed in a bedroom or bathroom 4 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 instructi...

Page 4: ...al gas fired supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit Vent free gas products are prohibited for bedroom and bathroom installation in the Commonwealth of Massachusetts Unpacking 1 Remove heater from carton 2 Remove all protective packaging applied to heater for shipment 3 Check heater for any shipping damage If heater is damaged promptly r...

Page 5: ...e air that leaks around doors and windows may provide enough fresh air for combustion and ventilation However in buildings of un usually tight construction you must provide additional fresh air Unusually tight construction is defined as construction where a walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm 6 x 10 11 kg per pa sec ...

Page 6: ...n support ________ Btu Hr actual amount used Example 51 200 Btu Hr maximum the space can support 60 000 Btu Hr actual amount of Btu Hr used AIR FOR COMBUSTION AND VENTILATION Continued The space in the above example is a confined space because the actual Btu Hr used is more than the maximum Btu Hr the space can sup port You must provide additional fresh air Your options are as follows A Rework wor...

Page 7: ... the event of a power outage you can use this heater as your primary heat source WARNING A qualified ser vice person must install heater Follow all local codes CHECK GAS TYPE Use only the correct type of gas natural or propane LP If your gas supply is not the correct gas type do not install heater Call dealer where you bought heater for proper type heater WARNING This appliance is equipped for eit...

Page 8: ...nd joining wall You can locate heater on floor away from a wall An optional floor mounting stand is need ed Purchase the floor mounting stand from your dealer See Accessories page 26 WARNING Never install the heater in a bedroom or bathroom in a recreational vehicle where curtains furniture clothing or other flammable objects are less than 36 91 5 cm from the front top or sides of the heater as a ...

Page 9: ...6 cm Min 16 40 6 cm Min 14 35 6 cm 12 30 4 cm Min Adjoining Wall 14 35 6 cm Adjoining Wall Only Insert Mounting Screws Through Last Hole On Each End Only Insert Mounti Screws Through L Hole On Each En Floor Floor Methods For Attaching Mounting Bracket To Wall Only use last hole on each end of mounting bracket to attach bracket to wall These two holes are 14 35 6 cm apart from their cen ters Attach...

Page 10: ...Anchor Method For attaching mounting bracket to hollow walls wall areas between studs or solid walls concrete or masonry 1 Drill holes at marked locations using 5 16 drill bit For solid walls concrete or masonry drill at least 1 2 5 cm deep 2 Fold wall anchor as shown in Figure 9 3 Insert wall anchor wings first into hole Tap anchor flush to wall 4 For thin walls 1 2 1 3 cm or less insert red key ...

Page 11: ...odes Use pipe of large enough diameter to allow proper gas volume to heater If pipe is too small undue loss of volume will occur Typical Inlet Pipe Diameters 16 18 000 Btu hr models 3 8 or greater 26 30 000 Btu hr models 1 2 or greater Installation must include 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 hea...

Page 12: ...luid toalljoints Bubblesformingshow a leak Correct all leaks at once CAUTION For propane LP gas make sure external regula tor has been installed between propane LP supply and heater See guidelines under Connect ing to Gas Supply page 11 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 e...

Page 13: ... 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 see Figure 17 or 18 Apply a noncorrosive leak de tection fluid to all joints Bubbles forming show a leak 5 Correct all leaks at once 6 Light heater see Operating Heater Check all other internal joints for leaks 7 Turn off heater see To Turn Off Gas...

Page 14: ...o the PI LOT position Keep control knob pressed in for five 5 seconds 7 With control knob pressed in push down and release ignitor button This will light pilot The pilot is attached to the front of burner Note You may be running this heater for the first time after hooking up to gas supply If so you may need to press in control knob for 30 seconds or more This will allow air to bleed from the gas ...

Page 15: ...urner Only pilot stays lit Turn control knob clockwise to the PILOT position THERMOSTAT Control OPERATION The thermostatic control used on these models differs from standard thermostats Standard thermostats simply turn on and off the burner The thermostat used on this heater senses the room temperature At times the room may exceed the set temperature If so the burner will shut off The burner will ...

Page 16: ... Figure 27 shows an incorrect burner flame pattern If burner flame pattern is incorrect as shown in Figure 27 turn heater off see To Turn Off Gas to Ap pliance page 15 see Troubleshooting page 18 Thermocouple Pilot Burner Pilot Burner Thermocouple Blue Flame Yellow Flame Figure 24 Correct Pilot Flame Pattern Figure 25 Incorrect Pilot Flame Pattern Figure 26 Correct Burner Flame Pattern Figure 27 I...

Page 17: ...es a clean burning flame Keep these holes clear of dust dirt and lint Clean these air inlet holes prior to each heating season Blocked air holes will create soot We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualified service person We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt To ...

Page 18: ...or setting is not correct 1 Not enough combustion ventilation air REMEDY 1 Replace pilot assembly 2 Replace pilot assembly 3 Reconnect ignitor cable 4 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 5 Replace ignitor cable 6 Replace ignitor 7 Tighten nut holding piezo ignitor Nut is located inside heater cabinet at top 1 Turn on gas supply or open equipment shutoff valv...

Page 19: ...valve 4 Hand tighten until snug then tighten 1 4 turn more 5 A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 16 or replace ODS pilot assembly 6 Replace pilot assembly 7 Replace control valve 8 Wait one minute for safety interlock system to reset Repeat ignition operation 1 Clean burner orifice s see Cleaning and Maintenance page 16 or replace b...

Page 20: ...ate and correct all leaks see Checking Gas Con nections page 12 2 Replace control valve 1 Take apart gas tubing and remove foreign matter 2 Locate and correct all leaks see Checking Gas Con nections page 12 1 Operate burner until air is removed from line Have gas line checked by local natural or propane LP gas company 2 Observe minimum installa tion clearances see Figure 4 page 8 3 Clean burner se...

Page 21: ...er Weight 29 lb 13 2 kg Average Shipping Weight 33 lb 15 kg GWRP16A and GWRP16TA Propane LP Gas 16 000 Btu hr GWRP16 is variable Piezo Ignition Pressure Regulator Setting 8 W C Inlet Gas Pressure in of water Maximum 14 Minimum 11 Average Heater Weight 22 lb 10 kg Average Shipping Weight 25 5 lb 11 6 kg GWRP26A and GWRP26TA Propane LP Gas 26 000 Btu hr GWRP26 is variable Piezo Ignition Pressure Reg...

Page 22: ...esatech com 119346 01B 22 Illustrated Parts Breakdown Cabinet body Models GWRP16A GWRn18A GWRP26A GWRN30A GWRP16TA GWRn18TA GWRP26TA and GWRn30TA 14 15 8 5 6 7 4 3 1 2 16 10 9 11 12 13 17 See pages 24 and 25 ...

Page 23: ...5 01 Roll Pin 1 11 098354 03 Control Knob 1 12 099415 18 Gas Regulator Propane LP Gas 1 099415 19 Gas Regulator Natural Gas 1 13 104819 02 Regulator Bracket 1 14 098522 24 Thermostat Gas Valve 1 15 102394 02 Thermostat Valve Mounting Bracket 1 16 107660 01 Inlet Tube 1 107660 03 Inlet Tube 1 103256 02 Inlet Tube 1 17 118721 04 Baffle 1 118721 03 Baffle 1 PARTS AVAILABLE NOT SHOWN 100642 03 Hardwar...

Page 24: ...er Nut 1 7 099056 24 Injector Plaque A or C 1 2 099056 25 Injector Plaque A or C 1 2 8 099056 01 Injector Plaque B 1 099056 02 Injector Plaque B 1 9 103844 01 Control Valve 1 100747 01 Control Valve 1 10 103352 03 Tubing Valve to Plaque 1 103353 04 Tubing Valve to Plaque 1 11 103352 04 Tubing Valve to Plaque 1 103353 05 Tubing Valve to Plaque 1 12 103353 06 Tubing Valve to Plaque 1 If replacing OD...

Page 25: ...njector Plaque B 1 099056 02 Injector Plaque B 1 If replacing ODS pilot and your model is pre 2002 your part number will be 099059 07 for natural gas models 103894 04 for propane LP models The thermocouple part number will be 098514 01 for both gases The electrode part number will be 098594 01 for both gases Burner Assembly GWRP26TA and GWRN30TA ILLUSTRATED PARTS BREAKDOWN and PARTS LIST Burner As...

Page 26: ...placement Parts Note Use only original replacement parts This will protect your warranty coverage for parts replaced under warranty Parts Under Warranty Contact authorized dealers of this product If they can t supply original replacement part s call DESA Heating Products Technical Ser vice Department at 1 866 672 6040 When calling DESA Heating Products have ready your name your address model and s...

Page 27: ... dealers of this product and or DESA Heating Products who will provide original factory replacement parts Failure to use original factory replacement parts voids this warranty The heater MUST be installed by a qualified installer in accordance with all local codes and instructions furnished with the unit This warranty does not apply to parts that are not in original condition because of normal wea...

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