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DGH7.1.2007
Hamilton Home Products, Inc.
1-800-879-0123
Installation and Maintenance Instructions
for Commercial and Residential Use
Gas-Fired Unit Heaters DGH 30 – 75
FOR YOUR SAFETY
CAUTION
WHAT TO DO IF YOU SMELL GAS:
• Open windows. To prevent premature heat exchanger failure
• Do not try to light any appliance. do not located ANY gas-fired units in areas
where chlorinated, halogenated, or acid
• Do no
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UNPACKING AND INSPECTION WARNINGS 1. Examine unit as received for any Should over heating occur, or the gas damages. If any damage is found, supply fail to shutoff, shutoff the manual proper notation should be made on gas valve to the appliance before shutting the carrierft.s freight bill. Claims should be off the electrical supply. made at once. When replacing an existing heater, it may be necessary to re-size the venting 2. If any parts are missing, claims of syst
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7. Do maintain a rear clearance of 18" 18. Do not attach duck work, air filters or (45.7cm) or 6" (15.2cm) beyond motor at plastic vent pipe to this unit heater. rear of uni, whichever is greater, and access side provide ample air for 19. Do not install below 7 ft. (2.1m) measured combustion and fan operation. from bottom of heater to the floor in commercial applications and 5 ft. (1.5m) 8. Do maintain minimum clearances from for residential applications. combustible material based on a 160˚F (7
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SUSPENSION washers and lock nuts, lock washers and nuts, or a double nut arrangement similarity used on Unit(s) must be supported from the structural the unit heater mounting brackets. part of the building. Do not support from ceiling boards, roof panels or plaster ceiling. This heater also can be installed on a shelf. The mounting brackets need to be attached Each unit is provided with two (2) angle as previously indicated. However, for shelf brackets for mounting purposes. See Figure 1
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The requirements for combustion and ventilation This unit heater series is equipped with power air depends on how unit will be installed. That is exhaust system. Do not use any additional either in confined or unconfined spaces. In both power exhaust systems or vent dampers. If cases enough incoming air is required to any are used or failure to follow the instructions eliminate negative pressure. provided may result in serious injury or death. Confined or Unconfined Space A.) Use the follow
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7. If improper venting is observed during any Unit heaters come with the vent adaptor already of the above tests, the venting system must attached so that piping may be installed. Drill be corrected. three holes so that pipe can be attached with 3 non-corrosive screws. 8. Should the venting system need to be revis- ed, it must conform with the National Fuel Vent pipe used shall be no smaller than 3 Gas Code ANSI Z223.1 or CAN/CGA B149 inches(7.6cm). Check National Fuel Gas Installation Codes
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Figure 3B HORIZONTAL THROUGH vented into a masonry (or concrete) chimney COMBUSTIBLE WALL lined with material acceptable with recog- nized standards and the authority having jurisdiction. Venting into an unlimited masonry chimney is not allowed. See the National Fuel Gas Code for common venting. 8. A minimum of 3 corrosion-resistant screws shall be used to secure vent joints. A listed vent cap must be utilized to stop drafts and moisture in the vent. 9. Reference the National Fuel Gas
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Figure 4 Horizontal Venting With Upward C.) Requirements For Horizontal Venting Pitch 1. Horizontally Vented heaters perform as Category III Appliances. This type of venting system follows special venting criteria: a.) All residential horizontal installed heaters shall be vented with either 4 in. (10.2cm) B-0 double wall vent pipe, 3 in. (7.2cm) AL29-4C stainless steel or and agency certified category III venting system. Certified category III systems can be pur- chased from your vent pipe
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3.) Venting system shall terminate a minimum of 9.) Figure 4 shows how to vent piping through 3 ft. (.9m) above any forced system located a combustible wall with either a thimble or within 10 ft. (3.1m) and a minimum of 4 ft. (1.2m) type B-0 vent. Check with local authorities horizontally from, or 1 ft. (.34m) above any having jurisdiction for the proper procedure. door, window, electric or gas meters, regulators or gravity air inlet into any building. The bottom of the vent terminal shall be
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CAUTION A regulator is required on the propane tanks. Check inlet supply pressure at the unit and Piping must be gas tight and a non-hardening upstream of the gas control. Make sure pipe compound resistant to the actions of LP the inlet supply pressure for natural gas is gas must be used. 6-7in. w.c. (1.2-1.7kPa) and 12-14in. w.c. (3.0-3.5kPa) for LPG. Supply piping, including union and external shutoff valve, are not provided. Purging air from gas lines and piping must be done in accordanc
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meter, making sure all other appliances are If the regulator needs adjustment, the regulator turned off. adjusting screw may be turned clockwise to The test hand on the meter should be timed for increase the pressure or counterclockwise to at least one (1) revolution. Note the number of decrease the manifold pressure by more than seconds for one (1) revolution. Use this formula or less than 0.3" w.c. (8.7kPa). to obtain the BTU/Hr input rate: BTU/Hr = (Ft³/rev. ÷ No. sec./rev.) x 3600 Method
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7. Restart heater by following the light instructions. Electrical Connections Set thermostat to the desired temperature setting. CAUTION Tabel 6 Manifold Pressure & Gas Consumption Power supply must be disconnected before Manifold Pressure making any wiring connections to prevent BTU/Cu. ft. Spec. Gravity in. W.C / kPa electrical shock and damage to equipment. Natural Units must be wired in strict accordancce with 3.5 / 0.87 1050 0.6 Gas the wiring diagram furnished with the heater. LP 2500
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FIGURE 8 DGH WIRING DIAGRAM BEFORE OPERATING UNIT HEATER Follow these on-site pre-operational procedures before putting unit heater into operation: 1. Turn off power supply. 2. Check all clearances. 3. Make sure fan is not contacting casing when blade is spun by hand. 4. Check to make sure deflector blades are at a 30° minimum angle from the horizontal. 5. Make sure all electrical connections are secure. 6. Check for gas leaks. LIGHTING / OPERATING INSTRUCTIONS FOR YOUR SAFETY, READ BEFORE OPER
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C. Use only your hand to move the gas control switch. Never use tools. If the switch will not move by hand, don't try to repair it, call a qualified technician. Force or attempted repair may result in a fire or explosion. D. Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water. OPERATING INSTRUCTIONS TO TURN OFF GAS TO A
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TECHNICAL / DIMENSIONS DIMENSIONS (inches / cm) FOR DGH (30, 45, 60, 75) MODELS 30 45 60 75 A 26.8 / 68.1 26.8 / 68.1 26.8 / 68.1 26.8 / 68.1 B 12.2 / 31 12.2 / 31 18 / 45.7 18 / 45.7 C 16.5 / 41.9 16.5 / 41.9 16.5 / 41.9 16.5 / 41.9 D 14.9 / 37.8 14.9 / 37.8 14.9 / 37.8 14.9 / 37.8 E 10.1 / 25.7 10.1 / 25.7 15.9 / 40.4 15.9 / 40.4 F 7.7 / 19.6 7.7 / 19.6 13.7 / 34.8 13.7 / 34.8 G 17.5 / 44.5 17.5 / 44.5 17.5 / 44.5 17.5 / 44.5 H 7 / 17.8 7 / 17.8 7 / 17.8 7 / 17.8 Gas Input .5 / 1.3 .5 / 1.3 .5
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MAINTENANCE 13. Turn gas and electricity back on and set the thermostat high enough to cycle the unit to go 1. Remove the access panel. through a complete cycle to ensure proper operation and that there is no gas leakage. 2. Close manual gas valve and disconnect the union on the gas line. 14. Replace access panel and set the thermostat at the desired setting. 3. Disconnect wires from the gas valve along the with the ignition wires from S1 and S2 on the 15. Replace any worn or broken component
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ADDENDUM - Page 18 SAFETY DEVICES (Continued) LED DIAGNOSTIC CAPABILITY 3) Pressure Switch The red LED on the ignition module indicates the This is a normally open type switch which monitors condition of the control system. The following the venting system. When the inducer motor codes indicate what type of failure is occurring speeds up to produce enough vacuum in the venting and are also shown on the module. system, the contacts in the pressure switch close to complete the circuit to the
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WINCHESTER Garage Heater Parts Listing Ref # Description DGH 30 DGH 45 DGH 60 DGH 75 1 Casing Wrapper GH-1001 GH-1001 GH-1025 GH-1025 2 Cover Panel* GH-1002 GH-1002 GH-1026 GH-1026 3 Front Panel GH-1003 GH-1003 GH-1027 GH-1027 4 Side Panel* GH-1004 GH-1004 GH-1028 GH-1028 5 Louvers GH-1005 (3) GH-1005 (3) GH-1005 (5) GH-1005 (5) 6Springs, for Louvers GH-1005 GH-1005 GH-1005 GH-1005 7 Collector box* GH-1008-1 GH-1008-2 GH-1030-1 GH-1030-2 8 Collector box Gasket* GH-1007 GH-1007 GH-1029 GH-1029 9
