Table of Contents
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INSTALLATION
INSTRUCTION
CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 3
AGENCY APPROVALS . . . . . . . . . . . . . . . . . . . . . . 4
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
COMPLETE TABLE OF CONTENTS ON FOLLOWING PAGE
SAVE THIS MANUAL
SUNLINE GAS/ELECTRIC
SINGLE PACKAGE
AIR CONDITIONERS
MODELS:
DHG180 (15 TON, 10.0 EER)
DHG240 (20 TON, 9.7 EER)
208/230/460 VOLT
MODELS ONLY
208/230/575 VOLT
MODELS ONLY
035-17233-000-C-0702
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Table of Contents
Related Manuals for York DHG180
Summary of Contents for York DHG180
- Page 1 MAINTENANCE ......25 COMPLETE TABLE OF CONTENTS ON FOLLOWING PAGE SAVE THIS MANUAL SUNLINE GAS/ELECTRIC SINGLE PACKAGE AIR CONDITIONERS MODELS: DHG180 (15 TON, 10.0 EER) DHG240 (20 TON, 9.7 EER) 208/230/460 VOLT MODELS ONLY 035-17233-000-C-0702 208/230/575 VOLT MODELS ONLY...
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Page 2: Table Of Contents
GENERAL ........3 SAFETY CONSIDERATIONS . -
Page 3: General
035-17233-000-C-0702 TABLE 1: PRODUCT NOMENCLATURE Model Number Model # Description Product Category Product Generation Product Identifier Nominal Cooling Capacity Factory Installed Heat Nominal Heating Capacity Voltage Code Factory Installed Option Code GENERAL YORK Model DHG units are single package high efficiency gas-fired central heating furnaces with cooling unit designed for outdoor installation on a rooftop or a slab. -
Page 4: Reference
Improper installation may create a condition where the operation of the product could cause personal injury or property damage. REFERENCE Additional information on the design, installation, operation and service of this equipment is available in the following ref- erence forms: •... -
Page 5: Location
035-17233-000-C-0702 LOCATION Use the following guidelines to select a suitable location for these units. Unit is designed for outdoor installation only. Condenser coils must have an unlimited supply of air. Where a choice of location is possible, position the unit on either north or east side of building. -
Page 6: Ductwork
combustion and ventilation air in accordance with Section 5.3, Air for Combustion and Ventilation of the National Fuel Gas Code, ANSI Z223.1 (in U.S.A.) or Sections 7.2, 7.3 or 7.4 of Gas Installation Codes CAN/CGA-B149.1 and .2 (in Canada) and/or applicable provisions of the local building codes. -
Page 7: Condensate Drain
035-17233-000-C-0702 CONDENSATE DRAIN Plumbing must conform to local codes. Use a sealing com- pound on male pipe threads. Install a condensate drain line from the 1" NPT female connection on the unit to an open drain. FIGURE 4 : RECOMMENDED DRAIN PIPING An alternate drain connection (1"... -
Page 8: Combustion Discharge
When connecting electrical power and control wir- ing to the unit, waterproof type connectors MUST BE USED so that water or moisture cannot be drawn into the unit during normal operation. The above waterproofing conditions will also apply when installing a field-supplied disconnect switch. COMBUSTION DISCHARGE The products of combustion are discharged horizontally through two screened (hooded) openings on the upper gas... -
Page 9: Typical Field Wiring
035-17233-000-C-0702 FIGURE 5 : TYPICAL FIELD WIRING TABLE 4: GAS HEAT APPLICATION DATA Input Capacity (Mbh) 0 to 2000 Feet 2,000 to 4,500 Feet Above Sea Level Above Sea Level Min. Max. Min. Max. Heaters are shipped available fro natural gas, but can be converted to L.P./Propane with Kit Model No. 1NP0418. Based on maximum input and 1075/Btu/Ft. -
Page 10: L.p. Units, Tanks And Piping
TABLE 5: PIPE SIZING Nominal Iron Pipe Size Length in Feet 1 in. Maximum capacity of pipe in cubic feet of gas per hour. (Based upon a pressure drop of 0.3 inch water column and 0.6 specific gravity gas.) FIGURE 6 : EXTERNAL SUPPLY CONNECTION EXTERNAL SHUT-OFF Natural gas may contain some propane. -
Page 11: Vent And Combustion Air Hoods
035-17233-000-C-0702 Check all connections for leaks when piping is completed, using a soap solution. NEVER USE A FLAME. VENT AND COMBUSTION AIR HOODS Two vent hoods and a combustion air hood (with screens) are shipped attached to the blower housing in the blower com- partment. -
Page 12: Enthalpy Setpoint Adjustment
035-17233-000-C-0702 FIGURE 9 : ENTHALPY SETPOINT ADJUSTMENT Unitary Products... -
Page 13: Physical Data
Roof Curb (lbs) ACCY. Barometric Damper (lbs) Wood Skid (lbs) This compressor will be energized first. TABLE 9: DHG ELECTRICAL DATA COMPRESSORS POWER MODEL SUPPLY 208/230-3-60 28.6 DHG180 460-3-60 14.4 575-3-60 11.4 208/230-3-60 28.6 DHG240 460-3-60 14.4 575-3-60 11.4 Although these sizes are based on copper conductors aluminum wire can be used. Refer to the national electric code (in USA) or the current Canadian Electrical Code (in Canada) to determine the proper size. -
Page 14: Unit Dimensions Front View
For curb mounted units, refer to the curb hanger dimensions of the curb for the proper size of the supply and return air duct connections. FIGURE 10 : UNIT DIMENSIONS DHG180 & 240 (FRONT VIEW) FIGURE 11 : UNIT DIMENSIONS DHE/DHG180 & 240 (RAINHOOD) ECONOMIZER / MOTORIZED DAMPER,... -
Page 15: Unit Dimensions Rear View
035-17233-000-C-0702 FIGURE 12 : UNIT DIMENSIONS DHE/DHG180 & 240 (REAR VIEW) NOTE: A 1” clearance must be provided between any com- bustible material and the supply air ductwork for a distance of 3 feet from the unit. NOTE: The products of combustion must not be allowed to accumulate within a confined space and recirculate. -
Page 16: 208 Volt & High Speed Drive Accy
TABLE 11: DHG 15 TON SUPPLY AIR BLOWER PERFORMANCE DHG180 - BOTTOM DUCT CONNECTIONS MOTOR BLOWER PULLEY 4500 SPEED, (TURNS (RPM) OPEN) 208 VOLT AND STANDARD DRIVE 1010 1040 FIGURE 13 : 208 VOLT AND HIGH SPEED DRIVE ACCESSORY 1025... -
Page 17: 12Dhg 20T Supply Air Blower Performance
035-17233-000-C-0702 TABLE 12: DHG 20 TON SUPPLY AIR BLOWER PERFORMANCE DHG240 - BOTTOM DUCT CONNECTIONS MOTOR BLOWER PULLEY 6000 SPEED, (TURNS (RPM) OPEN) 208 VOLT AND STANDARD DRIVE 1015 208 VOLT AND HIGH SPEED DRIVE ACCESSORY 1025 1050 1065 1100 230/460 VOLT AND STANDARD DRIVE 1015 1025... -
Page 18: 13Static Resistances
TABLE 13: STATIC RESISTANCES DESCRIPTION WET COIL ECONOMIZER OPTION HORIZONTAL DUCT CONN. Deduct these resistance values from the available unit ESP values listed in the respective blower per- formance table except for Horizontal Duct Connections. Add these values due to less airflow resistance. TABLE 14: POWER EXHAUST PERFORMANCE MOTOR SPEED... -
Page 19: Operation
035-17233-000-C-0702 OPERATION COOLING SYSTEM The cooling section is a complete factory package utilizing an air-cooled condenser. The system is factory-charged with Refrigerant-22. The compressors are hermetically sealed, internally sprung and base-mounted with rubber-insulated hold-down bolts. Compressors have inherent (internal) protection. If there is an abnormal temperature rise in a compressor, the protector will open to shut down the compressor. -
Page 20: Heating System
A Low Pressure Switch/Loss Of Charge to protect against loss of refrigerant charge. (Opens at 7 psig + 3 and resets at 22 psig + 5) If either one of the above safety controls opens, that individ- ual refrigerant system will be locked out. The other refrigerant system will continue in operation unless it too is effected by the same fault. -
Page 21: Heat Anticipator Setpoints
035-17233-000-C-0702 FIGURE 15 : GAS VALVE AND CONTROLS Redundant Gas Valve - There are two separate gas valves in the furnace. Each valve contains a main and a redundant valve. The redundant valves are located upstream of the main gas valves. Should either or both of the main gas valves fail in the open position the redun- dant valves serve as back-ups and shuts off the flow of gas. -
Page 22: To Shut Down
Set room thermostat to desired temperature.(If thermo- stat set temperature is above room temperature, pilot burner ignition will occur and, after an interval to prove pilot flame, main burners will ignite). TO SHUT DOWN: Turn off electric power to unit. Depress knob of gas valve while turning to off position. -
Page 23: Burner Air Shutter Adjustment
035-17233-000-C-0702 Reverse the above procedure to replace the assemblies. Make sure that burners are level and seat at the rear of the heat exchanger. BURNER AIR SHUTTER ADJUSTMENT Adjust burner shutters so no yellow flame is observed in the heat exchanger tubes. Refer to Figure 17. CHECKING SUPPLY AIR CFM The RPM of the supply air blower will depend on the required CFM, the unit accessories or options and the static resis-... -
Page 24: Adjustment Of Temperature Rise
FIGURE 20 : PRESSURE DROP ACROSS A DRY INDOOR COIL VS. SUPPLY AIR CFM ADJUSTMENT OF TEMPERATURE RISE The temperature rise (or temperature difference between the return air and the heated air from the furnace) must lie within the range shown on the ETL rating plate and the data in Table After the temperature rise has been determined, the cfm can be calculated as follows: BtuhbInput... -
Page 25: Maintenance
035-17233-000-C-0702 MAINTENANCE NORMAL MAINTENANCE Prior to any of the following maintenance proce- dures, shut off all electric power to the unit to pre- vent personal injury. Periodic maintenance normally consists of changing or clean- ing filters and (under some conditions) cleaning the main burners FILTERS Inspect once a month. -
Page 26: Troubleshooting
Remove the burner assembly as outlined in BURNER INSTRUCTIONS. Remove the roof over the gas heat section. At the top plate from the top draft blower housing and the top draft blower wheel. Remove the screws holding the top of the flue collector box. - Page 27 035-17233-000-C-0702 The indoor blower motor is a non-inherently protected three-phase motor. Protection is provided by an overload relay for overcurrent and fuses for short circuit. If the motor fails to run, check the line voltage circuit and con- trol voltage circuit per the following procedure: If the Indoor Blower Motor does not operate, check visually that contactor M3 is pulled in.
- Page 28 If the furnace is cold, check for 24 volts at wire 241 attached to the time delay relay (ETD) located in the main control box. If 24 volts is not found, replace the ETD relay. If 24 volts is found at wire 241, remove the wires attached to the (ETD) and with a VOM, check for continuity across contacts 1 and 2.