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. VG175 Construction Heater C Revision 1-06 US For your safety: Do not use this heater in a space where gasoline or other liquids having flammable vapors are stored.
IMPORTANT INFORMATION! READ FIRST The heater is designed for use as a construction heater under ANSI Z83.7a-2000. The primary purpose of construction heaters is to provide temporary heating of buildings under construction, alteration, or repair and to provide emergency heat. Properly used, the heater provides safe, economical heating. Products of combustion are vented outside the area being heated. The heater IS NOT designed as an Unvented Gas Fired Room Heater under ANSI-Z21.11.
Installation and Maintenance Manual Model VG175 Construction Heater Table of Contents: Page Safety & Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY & CAUTION • Instructions given in this manual and the applicable regulations of the local authorities must be followed. • The unit may be operated only by those persons who have been instructed in its proper use. • The unit is to be installed and operated in such a way as to ensure the safety of employees and surroundings. • Never cover the unit’s air openings. • Always ensure adequate fresh air supply to the unit. • Never stand in front of the discharge end of the heater.
OPERATING INSTRUCTIONS INSTALLATION • When transporting, use both lifting eyes located on sides of heater. • Place the unit on a level and non-combustible surface. • Minimum clearances from combustibles: - outlet, minimum 10 feet - sides, minimum 3 feet - top, minimum 3 feet - flue pipe exhaust, gas discharge minimum 2 feet • Manufacturer recommends a free zone of 5 feet around the unit and a minimum distance of 10 feet at the unit’s flue gas openings are to be maintained.
FUEL SUPPLY (CONTINUED) • Ensure that for the surrounding temperature, size and capacity of the propane supply cylinder is adequate to provide the rated Btu/hr input to the heater. • Visually inspect the hose assembly and ensure that it is protected from traffic, building materials, and contact with hot surfaces. If it is evident that there is excessive abrasion or wear, or the hose is cut, replace it immediately. • Purge air from line and wait 10 minutes for gas to dissipate.
START UP (CONTINUED) 4. Turn the control switch on the control box to position “1” (HEATING). 5. When the ambient temperature level is low, the burner switches on automatically. The fan does not switch on until the set temperature (104ºF) of the heat-exchanger has been reached (will take approximately 1-5 minutes). • After startup, the heater is operated automatically by the room thermostat and governed by all control devices, including the safety limit controls.
MAINTENANCE Prior to starting any maintenance work be sure to disconnect unit from power supply until unit cools down fully and fan shuts off! (Shut Down Procedures page 7) To ensure the proper function of the unit, it must be serviced on regular basis. Maintenance can be performed, excluding the control devices and safety limit controls, by an authorized trained & certified Heat Wagon dealer. The control devices and safety limit controls do not need routine maintenance.
SERVICE • The complete unit, including heat exchanger, combustion chamber and burner should be cleaned from dust and dirt after every heating period, at a minimum of once per year. -Removal of combustion chamber/heat exchanger: For proper cleaning of the unit, manufacturer recommends removal of the complete combustion chamber with heat exchanger. Clean combustion chamber and exchanger tube with brush. Vacuum all loose ash and soot. Close all cleaning flanges carefully to avoid damage to gasket material.
2. The heater runs for a little while, but shuts down. It won’t come on again until I reset the limit switch. 1. Turn the heater to position #1 and nothing happens.
4. Burner motor comes on, but the heater won’t ignite. 3. The heater has a loud rumbling sound. • Rough setting at 4.5. Minor adjustments from the rough settings can be made to achieve a smooth sounding burner with no soot from the flue pipe. • Clean with fine sandpaper. Make sure it is free from buildup or cracks. • Turn off the gas valve, turn on the burner. Use insulated pliers to hold the ignition wire and short it to ground. Pull the wire away from ground slowly.
• Clean the burner blower wheel with a small brush. • Refer to the flue pipe chart in this manual. Check flue for restriction. • Dirt on burner blower wheel • Improper flue pipe setup or flue pipe restrictions • Gas manifold pressure • For propane, use size .201. For natural gas, use size .261. • Remove flue pipe and use a flashlight to inspect the inside of the heat exchanger. The access panel is located in the front panel which is welded to the flue pipe.
7. The burner starts, but the main fan never comes on. 6. The burner seems to cycle on and off more than it should. • Blower motor • Current overload on blower motor • Blower motor relay • Heater Control Unit (HCU) • Fan sensor • Heater Control Unit (HCU) • On the heater control unit (HCU) disconnect the wires from terminals X12 and X13. Using an ohm meter, check the resistance between the two wires for a reading of 8K-15K ohms. • Turn the 3-position main switch to the fan position.
8. The burner continues to run, but the fan cycles on and off. • Use a low pressure gauge (0-15 inches of water column) with 1/8” NPT inlet. Install gauge in the pressure tap port located on the output side of the gas valve. Run the heater. Adjust the pressure by turning the pressure adjusting screw (located on the input side top of the gas valve) until the gauge reads 3” W.C.(Propane) & 3.2” W.C.(Nat Gas). Refer to pipe sizing charts in the Heat Wagon Engineering Guide. Heater requires 9-14” W.C.
Heat Wagon VG175 Parts List ITEM 1 2 3 4 5 6 7 8 9 11 12 13 15 16 22 23 PART# HWP 2709001 HWP 2709002 HWP 2709003 HWP 2709004 HWP 2709005 HWP 120001 HWP 2701065 HWP 2709008 HWP 2709009 HWP 2709011 HWP 2701244 HWP 40900 HWP 63956 HWP 2709016 HWP 41000 HWP 1709023 DESCRIPTION HEATER FRAME COVER PLATE SIDE PANELS (2) REAR HANDLE BOTTOM PLATE FLUE COLLAR WHEEL WHEEL SHAFT BURNER CHAMBER ASSEMBLY FAN GUARD, RIGHT FAN, COMPLETE FAN CONNECTION BOX BURNER VG175 BURNER COVER MAIN CONTROL BOX BRACKET, MAIN CONTROL
WAYNE BURNER PARTS BREAKDOWN ITEM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 16 PART# 62700-002 16635-002 63244-002 60226 12697-002 100603-008 61624-002 101243-001 63674-001 60177 61755 62899 44 62960-001 62360 15731 63256-001 61843 62374-004 61759 100603-001 62658-001 61684 61830 DESCRIPTION Bracket, Control Mounting Washer, Flat #8 Screw, Fillester 10-24 x .250 Bushing, Metal Screw, HXSL 23 10-24 x .375 Screw, HXSL 8 18 x 1.
120 Volt 1 PH ITEM E1 PART# HWP 41000 E2 HWP 40850 E3 HWP 40900 S1 S2 B1 B2 S3 X1 X2 HWP 120021 HWP 20579 HWP 20581 HWP 20582 HWP 21400 HWP 36701 HWP 36100 HWP 30330 HWP 36701 HWP 36701 X4 X5 DESCRIPTION MAIN CONTROL BOX (Fibox 175x125x100 MM) THERMOSTAT BOX (Fibox 125x125x75 MM) FAN CONNECTION BOX (Fibox 175x125x75 MM) MAIN SWITCH HEATER CONTROL UNIT, FAN SENSOR (for S4) BURNER SENSOR (for S5) OVERHEAT LIMIT SWITCH TERMINAL BLOCK (E1) GROUNDING BLOCK (E1) POWER CABLE & PLUG TERMINAL BLOCK (E2) TER
120 Volt 1 PH 18
EXHAUST FLUE PIPE GUIDELINES CAPACITY OF TYPE B DOUBLE-WALL VENTS SERVING A SINGLE DRAFT HOOD-HEATER x 1000 BTU'S FOR INDOOR APPLICATIONS TOTAL LATERAL VENT LENGTH, HEIGHT,H ,H, L, FEET FEET 6 0 2 6 12 8 0 2 8 16 10 0 2 10 20 15 0 2 15 30 20 0 2 10 20 30 30 0 2 20 40 VENT DIAMETER, D,INCHES 6 7 8 205 157 149 137 235 180 165 148 255 195 175 154 285 225 198 169 307 249 228 206 186 336 280 237 200 285 217 205 190 320 247 227 206 345 273 245 217 390 316 275 243 430 346 321 295 273 475 394 343 298 370 285
We Stock A Complete Line Of Parts & Accessories DUCTING THERMOSTAT LOCK BOXES HOSES REGULATORS 342 N. Co. Rd. 400 East Valparaiso, IN 46383 219-464-8818 • Fax 219-462-7985 www.heatwagon.
