York D3EG 036 - Manuals - manualsarea.com

Page 2 - Unitary Products Group; INSTALLATION; E G; MAINTENANCE & TROUBLESHOOTING; FIGURES; No. Description Page; TABLE OF CONTENTS

035-14832-003-A-0204 2 Unitary Products Group General................................................................................1 Inspection ............................................................................1 Reference .....................................................................

Page 3 - - UNIT APPLICATION DATA

LIMITATIONS These units must be installed in accordance with the current edition of the following national and local safety codes:In the U.S.A.:1. National Electrical Code ANSI/NFPA No. 70.2. National Fuel Gas Code Z223.1.3. Gas-Fired Central Furnace Standard ANSI Z21.47-1993.4. Local gas utility re...

Page 5 - NOTE: There may be a local gas utility requirement specifying; - TYPICAL FIELD WIRING; Length in Feet; TABLE 3

DISCONNECT SWITCH BRACKET FOR UNITS WITH OPTIONAL BELT-DRIVE BRACKET A special bracket for mounting a field-supplied disconnect switch is provided in each unit ordered with an optional belt- drive supply air blower. The bracket is shipped inside the blower compartment taped to the top of the blower ...

Page 6 - - EXTERNAL SUPPLY CONNECTION

GAS CONNECTION The gas supply line can be routed through the knockouts located on the front of the unit or through the opening provided in the unit's base. Refer to Figure 9 to locate these access openings. Typical supply piping arrangements are shown in Figures 4 and 5. All shaded items are field-s...

Page 7 - VENT AND COMBUSTION AIR HOODS; CAUTION: All three screws in the vent hood must be properly; OPTIONAL ECONOMIZER RAIN HOOD; NOTE: Sensor must be positioned so that the sensing ports; - VENT AND COMBUSTION AIR HOODS

VENT AND COMBUSTION AIR HOODS The vent and combustion air hoods are shipped attached to the blower housing in the blower compartment. These hoods must be installed on the outside of the gas heat panel to ensure proper unit function. The necessary mounting screws are provided in a bag that is also at...

Page 8 - - ENTHALPY SET POINT ADJUSTMENT; TABLE 4

NOTE: Install filters so that “Air Flow” arrows point toward the unit. 8. Install filter cover over the end of the hood with one screw (center of hood), securing filters into position. CAUTION: When proceeding with Steps 9 and 10, extreme care must be exercised while turning both the set point and m...

Page 9 - TABLE 6

Unitary Products Group 9 035-14832-003-A-0204 TABLE 6 - SUPPLY AIR PERFORMANCE - 3 & 4 Ton w/Belt-Drive Blower MODEL DEG AIR FLOW CFM Available External Static Pressure - IWG* 0.20 0.30 0.40 0.50 0.60 0.70 0.80 RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts 048 2000 843 86...

Page 10 - TABLE 7

10 Unitary Products Group 035-14832-003-A-0204 TABLE 7 - SUPPLY AIR PERFORMANCE - 5 Ton w/Belt-Drive Blower MODEL DEG AIR FLOW CFM Available External Static Pressure - IWG* 0.20 0.30 0.40 0.50 0.60 0.70 0.80 RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts 060 2500 1059 1560 107...

Page 11 - TABLE 8

Unitary Products Group 11 035-14832-003-A-0204 MODEL DEG POWER SUPPLY VOLTAGE LIMITATIONS (SEE NOTE 1) COMPRESSOR COND. FAN MOTOR, FLA SUPPLY AIR BLOWER MOTOR, FLA MINIMUM CIRCUIT AMPACITY MAX. FUSE SIZE, (SEE NOTE 2) AMPS MAX. HACR BREAKER SIZE, AMPS MIN. MAX. RLA LRA 036 208/230-1-60 208/230-3-60 ...

Page 12 - REAR VIEW; DETAIL “A”; AIR FLOW LEGEND

12 Unitary Products Group 035-14832-003-A-0204 FIG. 9 - DIMENSIONS AND CLEARANCES (3, 4 & 5 TON) All dimensions are in inches. They are subject to change without notice. Certi- fied dimensions will be provided upon DUCT COVERS - Units are shipped with all air duct openings covered. For side duct...

Page 13 - ton only) must be energized at least 10 hours before; COOLING SEQUENCE OF OPERATION; OPERATION; GAS MAIN

COOLING SYSTEM The cooling section is a complete factory package utilizing an air-cooled condenser. The system is factory-charged with Refrigerant-22. The compressor is hermetically sealed and internally sprung. The compressors have inherent (internal) protection. If there is an abnormal temperature...

Page 14 - HEAT ANTICIPATOR SETPOINTS; - LIMIT CONTROL SETTING; OPERATING INSTRUCTIONS; CONTROL; GAS VALVES

SAFETY CONTROLS (Heating) The control circuit includes the following safety controls:1. Limit Control (LS). This control is located inside the heat exchanger compartment and is set to open at the temperature indicated in Table 12. It resets automatically. The limit switch, operates when a high tempe...

Page 15 - - PROPER FLAME ADJUSTMENT; TURNS; CAUTION

PILOT CHECKOUT The pilot flame should envelope 3/8 inches of the end of the flame sensor. Refer to Figure 12. To adjust pilot flame, (1) remove pilot adjustment cover screw, (2) adjust the screw for the proper pilot flame, (3) be sure to replace cover screw after adjustment to prevent possible gas l...

Page 16 - CHECKING GAS INPUT; - PRESSURE DROP ACROSS A DRY

NOTE: The tubes must be inserted and held in a position per- pendicular to the air flow so that velocity pressure will not affect the static pressure readings. 3. Using an inclined manometer, determine the pressure drop across a dry evaporator coil. Since the moisture on an evaporator coil may vary ...

Page 17 - MAINTENANCE

NORMAL MAINTENANCE CAUTION: Prior to any of the following maintenance proce- dures, shut off all power to the unit to prevent per- sonal injury. Periodic maintenance normally consists of changing or cleaning filters and (under some conditions) cleaning the main burners. FILTERS - Inspect once a mont...

Page 18 - TROUBLESHOOTING

WARNING: Troubleshooting of components necessarily re- quires opening the electrical control box with the power connected to the unit. Use extreme care when working with live circuits! Check the unit nameplate for the correct line voltage and set the volt meter to the correct range before making any...