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www.desatech.com

113048-01F

2

WARNING:  Improper  installation,  adjustment,  altera-
tion, service or maintenance can cause injury or prop-
erty damage. Refer to this manual for correct installation 
and  operational  procedures.  For  assistance  or  addi-
tional information consult a qualified installer, service 
agency or the gas supplier.

WARNING: This is an unvented gas-fired heater. It uses 
air (oxygen) from the room in which it is installed. Provi-
sions for adequate combustion and ventilation air must 
be provided. Refer to 

Air for Combustion and Ventilation 

section on page 5 of this manual.

This appliance may be installed in an aftermarket,* per-
manently located, manufactured (mobile) home, where 
not prohibited by local codes.
This appliance is only for use with the type of gas indi-
cated on the rating plate. This appliance is not convert-
ible for use with other gases.

* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer 

State of Massachusetts:

 The installation must be made by a licensed plumber or gas fitter in the 

Commonwealth of Massachusetts.
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.
Vent-free gas products are prohibited for bedroom and bathroom installation in the Common-

wealth of Massachusetts.

TABLE OF CONTENTS

Safety Information ............................................... 3
Unpacking ........................................................... 4
Product Identification ........................................... 4
Local Codes ........................................................ 4
Product Features ................................................. 4
Air For Combustion and Ventilation ..................... 5
Installation ........................................................... 7
Operating Heater ............................................... 14
Inspecting Heater .............................................. 16
Cleaning and Maintenance ................................ 17

Service Hints ..................................................... 17
Technical Service .............................................. 17
Service Publications .......................................... 17
Troubleshooting ................................................. 18
Specifications .................................................... 22
Replacement Parts ............................................ 23
Accessories ....................................................... 23
Illustrated Parts Breakdown and Parts List ....... 24
Warranty Information ...........................Back Cover

Содержание GMN18

Страница 1: ...t use any phone in your building Immediately call your gas supplier from a neigh bor s phone Follow the gas supplier s instruc tions If you cannot reach your gas supplier call the re department Instal...

Страница 2: ...g plate This appliance is not convert ible for use with other gases Aftermarket Completion of sale not for purpose of resale from the manufacturer State of Massachusetts The installation must be made...

Страница 3: ...his heater WARNING Any change to this heater or its controls can be dangerous WARNING Donotuseablow er insert heat exchanger insert orotheraccessorynotapproved for use with this heater Due to high tem...

Страница 4: ...and to replace any part of the control system and any gas control which has been under water 12 Turn off and let cool before servicing Only a quali ed service person should service and repair heater...

Страница 5: ...e air that leaks around doors and windows may provide enough fresh air for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unusual...

Страница 6: ...used _______________ Btu Hr maximum the space can support _______________Btu Hr actual amount of Btu Hr used Example 51 200 Btu Hr maximum the space can support 60 000 Btu Hr actual amount of Btu Hr u...

Страница 7: ...or use as supplemental heat Use this heater along with your primary heating system Do not install this heater as your pri mary heat source If you have a centralheatingsystem youmay run system s circul...

Страница 8: ...y cause mildew to form from too much moisture See Air for Combustion and Ventilation page 5 If high hu midity is experienced a dehumidi er may be used to help lower the water vapor content in the air...

Страница 9: ...re hold for the mounting bracket Marking Screw Locations 1 Tape mounting bracket to wall where heater will be located Make sure mounting bracket is level WARNING Maintain mini mumclearancesshowninFigu...

Страница 10: ...e Wall anchors mounting screws and spacers are in hardware package The hardware package is provided with heater Attaching To Wall Stud Method For attaching mounting bracket to wall studs 1 Drill holes...

Страница 11: ...er heater regulator damage could occur CAUTION For propane LP gas never connect heater di rectly to the propane LP supply This heater requires an external regulator not supplied Install theexternalreg...

Страница 12: ...ve 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 15 IMPORTANT Install an equipment shutoff valve in an accessible loc...

Страница 13: ...pply piping system by either opening propane LP supply tank valve for propane LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air 3 Check all joints f...

Страница 14: ...ol Models OPERATING HEATER FOR YOUR SAFETY READ BEFORE LIGHTING WARNING If you do not fol low these instructions exactly a re or explosion may result causing property damage per sonal injury or loss o...

Страница 15: ...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 m...

Страница 16: ...me BURNER FLAME PATTERN FOR BLUE FLAME HEATERS WARNING If yellow tipping occurs your heater could pro duce increased levels of carbon monoxide NOTICE Do not mistake orange ames with yellow tipping Dir...

Страница 17: ...ions on the can you could damage the pilot assembly 1 Shut off the unit including the pilot Allow the unit to cool for at least thirty minutes 2 Inspect burner pilot for dust and dirt 3 Blow air acros...

Страница 18: ...ion 4 Air in gas lines when installed 5 Depleted gas supply pro pane LP gas only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When ignitor button is pressed there is...

Страница 19: ...gas company 1 Contact local natural or pro pane LP gas company 2 Clean burner see Cleaning and Maintenance page 17 or replace burner ori ce 1 Clean burner see Cleaning and Maintenance page 17 or repla...

Страница 20: ...nto white powder residue 1 Plaque damaged 2 Inlet gas pressure is too low 3 Control knob set between locked positions REMEDY 1 Check burner for dirt and debris If found clean burner see Cleaning and M...

Страница 21: ...t above 2 Control valve defective 1 Foreign matter between control valve and burner 2 Gas leak See Warning statement above 1 Not enough combustion ven tilation air OBSERVED PROBLEM Heater produces a c...

Страница 22: ...mum 10 5 Minimum 4 Heater Weight 20 lb Shipping Weight 25 lb GMP26 AND GMP26T Propane LP Gas 26 000 Btu Hr GMP26 has variable settings Piezo Ignition Pressure Regulator Setting 8 W C Inlet Gas Pressur...

Страница 23: ...t 1 866 672 6040 for referral information When calling DESA Heating Products have ready model number of your heater the replacement part number ACCESSORIES Purchase these heater accessories from your...

Страница 24: ...www desatech com 113048 01F 24 ILLUSTRATED PARTS BREAKDOWN MODELS GMP16 GMP16T GMN18 GMN18T GMP26 GMP26T GMN30 AND GMN30T 14 15 8 5 6 7 4 3 1 2 16 10 9 11 12 13 17 See Pages 26 27...

Страница 25: ...2 01 Control Rod Assembly 1 10 098325 01 Roll Pin 1 11 098354 03 Control Knob 1 12 099415 18 Gas Regulator Propane LP 1 099415 19 Gas Regulator Natural 1 13 104819 02 Regulator Bracket 1 14 098522 24...

Страница 26: ...A 1 103353 04 Tubing Valve to Plaque A 1 11 103352 04 Tubing Valve to Plaque B 1 103353 05 Tubing Valve to Plaque B 1 12 103353 06 Tubing Valve to Plaque C 1 13 107660 01 Inlet Tube 1 107660 03 Inlet...

Страница 27: ...ctor Plaque A or C 1 2 099056 25 Injector Plaque A or C 1 2 7 099056 01 Injector Plaque B 1 099056 02 Injector Plaque B 1 If replacing ODS pilot and your model is pre 2002 your part number will be 103...

Страница 28: ...www desatech com 113048 01F 28 ILLUSTRATED PARTS BREAKDOWN MODELS GMP20BT GMN20BT GMP30BT AND GMN30BT 2 3 5 6 8 9 10 10 11 12 13 14 16 18 19 4 7 1 15 17 20...

Страница 29: ...y 1 9 098271 09 Ignitor Cable 1 10 098249 01 Nut 2 11 110803 01 ODS Pilot Assembly NG 1 110803 02 ODS Pilot Assembly LP 1 12 103446 02 Burner 1 103447 06 Burner 1 13 099387 03 Pilot Tubing 1 14 103845...

Страница 30: ...__ ______________________________________________________ ______________________________________________________ ______________________________________________________ ________________________________...

Страница 31: ...__ ______________________________________________________ ______________________________________________________ ______________________________________________________ ________________________________...

Страница 32: ...this product and or DESAHeating 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 qu...

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