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Desa GMP16T manual

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Table of contents for the manual

  • Page 1

    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. ?[...]

  • Page 2

    www.desatech.com 113048-01C 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 [...]

  • Page 3

    www.desatech.com 3 113048-01C SAFETY INFORMATION WARNING: This product con- tains and/or generates chemicals known to the State of California to cause cancer or birth defects, or other reproductive harm. IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, oper- ate, or service this heater. Im- proper use of thi[...]

  • Page 4

    www.desatech.com 113048-01C 4 SAFETY INFORMATION Continued PRODUCT IDENTIFICATION Figure 1 - Vent-Free Gas Heater Ignitor Button Control Knob Heater Cabinet Front Panel Glass Panel Grill Guard 5. This heater needs fresh, outside air ventila- tion to run properly . This heater has an Oxy- gen Depletion Sensing (ODS) safety shutoff system. The ODS sh[...]

  • Page 5

    www.desatech.com 5 113048-01C AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall not be installed in a confined space or unusually tight con- struction unless provisions are provided for adequate combus- tion and ventilation air. Read the following instructions to in- sure proper fresh air for this and other fuel-burning appli- ances in [...]

  • Page 6

    www.desatech.com 113048-01C 6 AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this work sheet to determine if you have a con- fined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorle[...]

  • Page 7

    www.desatech.com 7 113048-01C Figure 3 - Ventilation Air from Outdoors Figure 2 - Ventilation Air from Inside Building Or Remove Door into Adjoining Room, Option 3 Ventilation Grills Into Adjoining Room, Option 2 12" 12" Ventilation Grills into Adjoining Room, Option 1 Outlet Air Ventilated Attic Outlet Air Inlet Air Inlet Air Ventilated [...]

  • Page 8

    www.desatech.com 113048-01C 8 INSTALLATION ITEMS 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 * • ground joint union • sediment trap • tee joint • pipe wrench * A CSA d[...]

  • Page 9

    www.desatech.com 9 113048-01C INSTALLATION Continued Figure 5 - Attaching Thermostat Sensing Bulb Figure 7 - Removing Front Panel Of Heater Clamp Thermostat Sensing Bulb Figure 6 - Mounting Bracket THERMOSTAT SENSING BULB (Thermostat Models Only) The thermostat sensing bulb has been placed be- low the heater . 1. Place clamp on thermostat sensing b[...]

  • Page 10

    www.desatech.com 113048-01C 10 INSTALLATION Continued 30,000 Btu/Hr Models 20,000 Btu/Hr Models Figure 8 - Mounting Bracket Clearances 18 3 / 4 " Min. 12" Min. 14" Adjoining Wall Only Insert Mounting Screws Through Last Hole On Each End Floor 14" 18 3 / 4 " Min. 8" Min. Adjoining Wall Only Insert Mounting Screws Throug[...]

  • Page 11

    www.desatech.com 11 113048-01C Figure 12 - Installing Bottom Mounting Screws Side View Front View Wall Spacer Heater INSTALLATION Continued Figure 13 - Installing Base Feet Sheet Metal Screw Wood Screw Base Foot Installing Bottom Mounting Screws 1. Locate two bottom mounting holes. These holes are near bottom on back panel of heater (see Figure 12)[...]

  • Page 12

    www.desatech.com 113048-01C 12 INSTALLATION Continued Figure 14 - External Regulator With Vent Pointing Down External Regulator Propane/LP Supply Tank Vent Pointing Down Tee Joint Reducer Bushing to 1/8" NPT 1/8" NPT Plug Tap Test Gauge Connection* 3/8" NPT Pipe Nipple Heater Cabinet Equipment Shutoff Valve * 3" Min. From Extern[...]

  • Page 13

    www.desatech.com 13 113048-01C INSTALLATION Continued Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from go- ing 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. Install sediment trap in supply line as sho[...]

  • Page 14

    www.desatech.com 113048-01C 14 OFF IGNITOR Figure 18 - Control Knob In The OFF Position Ignitor Button Control Knob INSTALLATION Continued PRESSURE TESTING HEATER GAS CONNECTIONS 1. Open equipment shutoff valve (see Figure 16, page 13). 2. Open propane/LP supply tank valve. 3. Make sure control knob of heater is in the OFF position. 4. Check all jo[...]

  • Page 15

    www.desatech.com 15 113048-01C If pilot does not light • turn control knob clockwise to the OFF position • r epeat steps 5 and 6 If pilot does not stay lit after several tries • r efer to T roubleshooting , page 20 • contact a qualified service person or gas supplier for repairs Until repairs ar e made, light pilot with match. T o light pil[...]

  • Page 16

    www.desatech.com 113048-01C 16 OPERATING HEATER Continued Figure 22 - Pilot (actual pilot may vary) Ignitor Electrode Pilot Burner Thermocouple O F F P I L O T Figure 21 - Control Knob In The OFF Position Ignitor Button Control Knob 7. Keep control knob pressed in for 30 sec- onds after lighting pilot. After 30 seconds, release contr ol knob. • I[...]

  • Page 17

    www.desatech.com 17 113048-01C Figure 23 - Burner Patterns for Infrared Heaters Only Control Knob GMP16T GMP26T OPERATING HEATER Continued O F F P I L O T O F F P I L O T THERMOSTAT CONTROL OPERATION The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner . The thermost[...]

  • Page 18

    www.desatech.com 113048-01C 18 1/2 G 1/2 G Figure 26 - Correct Burner Flame Pattern for Blue Flame Heaters Yellow Tipping Figure 27 - Incorrect Burner Flame Pattern for Blue Flame Heaters 1 / 2 Glass Height 1 / 2 Glass Height Blue Flame INPECTING HEATER Continued BURNER FLAME PATTERN FOR BLUE FLAME HEATERS WARNING: If yellow tipping occurs, your he[...]

  • Page 19

    www.desatech.com 19 113048-01C CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burner, and cir- culating air passageways of heater clean. Inspect these ar- eas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need more frequent cle[...]

  • Page 20

    www.desatech.com 113048-01C 20 TROUBLESHOOTING WARNING: Turn off and unplug heater and let cool before servic- ing. 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 operatio[...]

  • Page 21

    www.desatech.com 21 113048-01C OBSERVED PROBLEM ODS/pilot lights but flame goes out when control knob is released Burner does not light after ODS/ pilot is lit Delayed ignition of burner Burner backfiring during com- bustion REMEDY 1. Press in control knob fully 2 . After ODS/pilot lights, keep con- trol knob pressed in 30 seconds 3. W ait one minu[...]

  • Page 22

    www.desatech.com 113048-01C 22 TROUBLESHOOTING Continued OBSERVED PROBLEM Yellow flame during burner com- bustion Slight smoke or odor during ini- tial operation Heater produces a whistling noise when burner is lit White powder residue forming within burner box or on adjacent walls or furniture POSSIBLE CAUSE 1. Not enough air 2. Gas regulator defe[...]

  • Page 23

    www.desatech.com 23 113048-01C 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. Follow the gas supplier’s instructions. • If you cannot reach your gas supplier,[...]

  • Page 24

    www.desatech.com 113048-01C 24 SPECIFICATIONS GMP30BT GMP20BT Btu (V ariable) 15,000/30,000 10,000/20,000 T ype Gas Propane/LP Only Propane/LP Only Ignition Piezo Piezo Pressure Regulator Setting 8" W .C. 8" W .C. Inlet Gas Pressure (in. of water) Maximum 14" 14" Minimum 1 1" 11" Dimensions, Inches (H x W x D) Heater ([...]

  • Page 25

    www.desatech.com 25 113048-01C SERVICE HINTS When Gas Pressure Is Too Low • pilot will not stay lit • burner will have delayed ignition • heater will not produce specified heat • propane/LP gas supply may be low Y ou may feel your gas pressure is too low . If so, contact your local propane/LP gas supplier . TECHNICAL SERVICE Y ou may have f[...]

  • Page 26

    www.desatech.com 113048-01C 26 ILLUSTRATED PARTS BREAKDOWN MODELS GMP16, GMP26, GMP16T, AND GMP26T 14 15 8 5 6 7 4 3 1 2 16 10 9 11 12 13 17 See Pages 28 & 29[...]

  • Page 27

    www.desatech.com 27 113048-01C PARTS LIST This list contains replaceable parts used in your heater . When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. KEY P ART NUMBER NO . GMP16 GMP26 GMP16T GMP26T DESCRIPTION QTY . 1 107673-01 107676-01 107673-01 107676-01 Front P anel 1 2 103476-01 103476-02 1[...]

  • Page 28

    www.desatech.com 113048-01C 28 KEY PART NUMBER NO. GMP16 GMP26 DESCRIPTION QTY. 1 110803-02* 110803-02* ODS/Pilot 1 2 110186-01 110186-01 Thermocouple Kit 1 3 098200-03 098200-03 Control Valve Bracket 1 4 105051-01 105050-02 Pilot Tubing 1 5 099218-08 099218-09 Burner 1 6 098508-01 098508-01 Valve Retainer Nut 1 7 099056-25 099056-25 Injector - Pla[...]

  • Page 29

    www.desatech.com 29 113048-01C 5 7 6 4 3 1 2 Burner Assembly GMP16T 5 6 7 4 6 3 1 2 Burner Assembly GMP26T KEY PART NUMBER NO. GMP16T GMP26T DESCRIPTION QTY. 1 110803-02* 110803-02* ODS/Pilot 1 2 110186-01 110186-01 Thermocouple Kit 1 3 099387-11 099387-0 3 Pilot Tubing 1 4 10 4818-03 104818-04 Outlet Tubing 1 5 099218-08 099218-09 Burner 1 6 09905[...]

  • Page 30

    www.desatech.com 113048-01C 30 ILLUSTRATED PARTS BREAKDOWN MODELS GMP20BT AND GMP30BT 2 3 5 6 8 9 10 10 11 12 13 14 16 18 19 4 7 1 15 17 20[...]

  • Page 31

    www.desatech.com 31 113048-01C PARTS LIST This list contains replaceable parts used in your heater . When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. KEY PART NUMBER NO. GMP20BT GMP30BT DESCRIPTION QTY. 1 097159-04 097159-04 Piezo Ignitor 1 2 107673-01 107676-01 Front Panel 1 3 103476-01 103476-[...]

  • Page 32

    Always specify model and serial numbers when communicating with the factory . W e reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty . W e make no other warranty , expressed or implied. 113048-01 Rev. C 04/04 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY[...]