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950H(L)
Construction
Heater
Revision 8-14
Installation and Maintenance Manual
Please retain this manual for future reference.
C
For your safety: Do not use this heater in
a space where gasoline or other liquids
having flammable vapors are stored.
342 N. Co. Rd. 400 East
Valparaiso, IN 46383
219-464-8818 • Fax 219-462-7985
www.heatwagon.com
US
NRTL
ANSI Z83.7
CONST. HTR
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Summary of Contents for Heat Wagon 950H(L)
- Page 1 342 N. Co. Rd. 400 East Valparaiso, IN 46383 219-464-8818 • Fax 219-462-7985 www.heatwagon.com Installation and Maintenance Manual Please retain this manual for future reference. 950H(L) Construction Heater NRTL ANSI Z83.7 CONST. HTR For your safety: Do not use this heater in a space where gasoline or other liquids having flammable vapors are stored.
- Page 2 If you need assistance or heater information such as an instruction manual, labels, etc., contact your local Heat Wagon dealer or the manufacturer. Fire, burn, inhalation, and explosion hazard. Keep solid combustibles, such as build- ing materials, paper or cardboard, a safe distance away from the heater as recom- mended by the instructions.
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Page 3: Table Of Contents
Wiring Diagrams .........15-17 WARRANTY All new Heat Wagon and Sure Flame heaters and fans are guaranteed against defective materials and work- manship for one (1) year from invoice date. -
Page 4: Specifications
DESIGN RELATED SAFETY FEATURES 1) FLAME FAILURE The electronic safeguard control shuts off the gas supply in .8 seconds if flame is lost to prevent raw gas from leaving the heater. 2) OVERHEATING The totally enclosed motor is protected by thermal overload. A high temperature limit switch is mounted in the control box. -
Page 5: Installation
INSTALLATION The Heat Wagon Model 950H(L) is a direct fired gas heater intended to be used primarily for the temporary heating of building under construction, alteration, or repair. Since all the products of combustion are released into the area being heated, it is imperative that adequate ventilation is pro- vided. -
Page 6: Proper Set Up
MODEL 950H & 950HL PROPER SET UP: Model 950HL is a liquid withdrawal unit. This unit will use 11 gal of LP per hour on high fire. Use at least (1) 200 gal. withdrawal tank. When using Propane turn the fuel selector valve (located on the lower manifold) to the Propane position. - Page 7 INSTALLATION USING A PROPANE SUPPLY TANK(S) 1) When installing the heater for use with propane gas, set the gas selector to “Propane” and lock in position. 2) The propane supply system must be set up for vapor withdrawal from the operating tank(s). Liquid Propane can cause the heater to overfire and will damage valve train components.
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Page 8: Operating Instructions
ON-SITE SAFETY PROBLEMS 1) SHORTING OUT OF DEFECTIVE COMPONENTS This is a very common problem which saves short term expense at the risk of a large future cost. Any heaters found in this condition should be removed immediately. 2) IMPROPER ENCLOSURES When heaters are installed partially to the outside for fresh air intake, strict adherence must be made to the minimum clearance to combustibles given on the instruction plate. -
Page 9: Sequence Of Component Operation
MODEL 950H & 950HL SEQUENCE OF COMPONENT OPERATION POWER SUPPLY Plug the heater into a 120 Volt grounded receptacle. Power is now at the 20 amp fuse and the 3 amp circuit breaker. Power light illuminates. 20 AMP FUSE & 3 AMP BREAKER If the circuit breaker and fuse are good there will be power at the thermostat and at the motor relay (normally open). -
Page 10: Trouble Shooting
TROUBLE SHOOTING DIRECTIONS: Find the specific symptom. refer to the Sequence of component Operation Guide. Check the components listed with a voltmeter for proper operation as described. Replace any com- ponents not operating correctly. Fan will not start when ON switch & thermostat are ON. •... -
Page 11: Preventative Maintenance
PREVENTATIVE MAINTENANCE Heat Wagon Construction Heaters are built to withstand the rigors of operating on construction sites, for mining appli- cations, and a multitude of other locations. To maintain the reliable performance required it is necessary to do a certain amount of regular maintenance. -
Page 12: Parts Breakdown
MODEL 950H & 950HL Before Serial# H5688 Spark Plug Placement After Serial# H5688 Spark Plug (SFP 2143) Item Part # Description HWP HB1171B Burner Complete HWP HB1177C Heat Shield HWP HB950A Heater Body Shell HWP HC1083 Control Box HWP HC1082 Control Box Lid HWP HM1050 Motor... - Page 13 MODEL 950H & 950HS VAPOR PIPE TRAIN BREAKDOWN Item Part # Description HWP HV1120 Gas Selector Valve 1-1/4” Locking HWP HV1169 Gauge 15” W.C. HWP HV1138 1-1/4” Solenoid Valve ACC 11SV08 Regulator HWP HV1121 1-1/4” Ball Valve HWP HV1122 1-1/4” Y Strainer SFP 4490 2 Stage Regulator Valve MODEL 950 IGNITER...
- Page 14 CONTROL BOX PARTS Item Part # Description SFP 9264 Control Relay HWP HC1001D DSI Control SFP S1500-710 Air Switch HWP HC1123 Terminal Block (A,C) SFP 2446 Hi Limit Switch HWP HC1123 Terminal Block (C) SFP 9264 Motor Relay HWP HC1122 Fuse Block HWP HC1115 Fuse 20 amp...
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Page 15: Wiring Diagrams
950H CONTROL BOX WIRING Before Serial# H5688 (Igniter) After Serial# H5688 (Spark Plug) Spark Plug Igniter... - Page 16 950H CONTROL BOX WIRING No Neutral Shown...
- Page 17 MAIN CIRCUIT DIAGRAM...
- Page 18 ccessories P-O-L FITTING TO 0-30 PSI PRESSURE GAUGE REGULATOR CONNECT TO PROPANE #HWP-HR1053 #HWP-HV1027 SUPPLY (Can be installed on HR1053 (First stage regulator for decreasing #ACC-G1680 for regulating gas pressure) tank pressure) Max incoming - 300psi Adjustable outlet pressure (3-30 psi) HIGH TEMPERATURE DUCT GAS HOSE #ACC-7525 - 3/4”...
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