Figure 7 - Removing Front Panel Of Heater 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 inches apart from their centers. Attach mounting bracket to wall in one of two ways: 1. Attaching to wall stud 2. Attaching to wall anchor Attaching to Wall Stud: This method provides the strongest hold. Insert mounting screws through mounting bracket and into wall studs. Attaching to Wall Anchor: This method

PARTS NOT UNDER WARRANTY Contact authorized dealers of this product. If they cannot supply original replacement part(s), either contact your nearest Parts Central or call DESA International’s Parts Department at 1-800-972-7879 for referral information. When calling DESA International, have ready: • model number of your heater • the replacement part number 18 107299 OWNER’S MANUAL PARTS CENTRALS These Parts Centrals are privately owned businesses. They have agreed to support our customer's needs

Bad electrical connection between ignitor and ignition control assembly 7. Defective ignitor 8. Defective ignition control assembly 9. 200 Model Only: Defective fuel valve (Models equipped with fuel valve only) 6. Check electrical connections. See Wiring Diagrams, page 17 7. Replace ignitor, see page 11 8. Replace ignition control assembly 9. See Fuel Valve, page 10 Heater ignites but ignition control assembly shuts heater off after a short period of time 1. Pump pressure incorrect 2. Dirty air

— 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. • 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 service must be performed by a qualified installer, servic

30° and 60° Deflector Hoods — Propeller and Blower Models Figure A 30° Hood 60° Hood Figure B — Throw/Floor Coverage Note: O-X = Feet from heater to start of floor coverage. O-Y = Feet to end of floor coverage. O-Z = Feet to end of throw. MOUNTING HEIGHT X Y Y Z Z X 60 NOZZLE 30 NOZZLE 60 30 30 DOWNTURN NOZZLE 60 DOWNTURN NOZZLE 20 PERFORMANCE DATA Heater Parts from ACF Greenhouses PERFORMANCE DATA 90° Downward Deflector Hood — Propeller and Blower Models Figure C 90° Hood Figure D H S S 21 30°,

Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space. * Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them. 114683-01B 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

If so, contact your local natural or propane/LP gas supplier. TECHNICAL SERVICE You may have further questions about installation, operation or troubleshooting. If so, contact DESA Heating Products. Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready. You can also visit DESAHeating Products.technical service web site at SERVICE PUBLICATIONS You can purchase a service manual from the address listed on the back page of this ma

They have agreed to support our customer’s needs by providing original replacement parts and accessories. When calling a Parts Central, ask for the Parts Department. Baltimore Electric 1348 Dixwell Avenue Hamden, CT 06514 1-800-397-7553 203-248-7553 Parts Department Portable Heater Parts 342 N. County Rd. 400 East Valparaiso, IN 46383 All States 219-462-7441 1-800-362-6951 Parts Department FBD 1349 Adams Street Bowling Green, KY 42103 502-846-1199 1-800-654-8534 Fax: 1-800-846-0090 Four Flags Po

Wait one (1) minute before lighting pilot again. 8. Turn control knob counterclockwise to desired heating level. The main burner should light. Set control knob to any heat level between HI and LO. CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve. Ignitor ElectrodeIgnitor Button Control Knob PILOTLO OFFHI IGNITOR Figure 22 - Control Knob In The OFF Position Pilot BurnerThermocouple Figure 23 - Pilot TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Turn control

Plate 1 ** Not a field replaceable part. For more information, visit more information, visit 24 24 SPECIFICATIONS REPLACEMENT PARTS SERVICE HINTS TECHNICAL SERVICE SERVICE PUBLICATIONS SPECIFICATIONS REPLACEMENT WMN20 PARTS GN30, GN30T GWN20 Note: Use only original replacement parts. This GWN30T GWN20T will protect your warranty coverage for parts Btu (Variable) 15,000/30,000 10,000/20,000 replaced under warranty. Type Gas Natural Only Natural Only Ignition Piezo Piezo PARTS UNDER WARRANTY Press