Gebruiksaanwijzing /service van het product D2EG 048 van de fabrikant York
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GENERAL YORK Model DEG units are single package air conditioners with gas heat designed for outdoor installation on a rooftop or a slab. The units are completely assembled on rigid, permanently attached base rails. All piping, refrigerant charge, and electrical wiring is factory-installed and tested.
035-14832-003-A-0204 2 Unitary Products Group General ................................................................................ 1 Inspection ............................................................................ 1 Reference ..............
LIMIT ATIONS 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/NFP A No. 70. 2. National Fuel Gas Code Z223.1. 3. Gas-Fired Central Furnace Standard ANSI Z21.
The supply and return air duct systems should be designed for the CFM and static requirements of the job. They should NO T be sized to match the dimensions of the duct connections on the unit. CAUTION: Wh en fa st ening ductwork to the side duct flanges on the unit, insert the screws through the duct flanges only .
DISCONNECT SWITCH BRACKET FOR UNITS WITH OPTIONAL BEL T -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 housing.
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. T ypical supply piping arrangements are shown in Figures 4 and 5.
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 attached to the blower housing.
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.
Unitary Products Group 9 035-14832-003-A-0204 T ABLE 6 - SUPPL Y AIR PERFORMANCE - 3 & 4 T on w/Belt-Drive Blower MODEL DEG AIR FLOW CFM Available External Static Pressure - IWG* 0.
10 Unitary Products Group 035-14832-003-A-0204 T ABLE 7 - SUPPL Y AIR PERFORMANCE - 5 T on w/Belt-Drive Blower MODEL DEG AIR FLOW CFM Available External Static Pressure - IWG* 0.
Unitary Products Group 11 035-14832-003-A-0204 MODEL DEG POWER SUPPL Y VOL TAGE LIMIT ATIONS (SEE NOTE 1) COMPRESSOR COND. FA N MOTOR, FLA SUPPL Y AIR BLOWER MOTOR, FLA MINIMUM CIRCUIT AMP ACITY MAX. FUSE SIZE, (SEE NOTE 2) AMPS MAX. HACR BREAKER SIZE, AMPS MIN.
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.
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.
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 T able 12. It resets automatically .
PILOT CHECKOUT The pilot flame should envelope 3/8 inches of the end of the flame sensor . Refer to Figure 12. T o 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 leakage.
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.
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.
WARNING: T roubleshooting 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 connections with line terminals.
6. The pilot burner ignites but the sparker continues to spark and the main burners do not ignite. a. Make the same checks and adjustments as described in Item 5. b.Make sure that the pilot burner is not bent or damaged. c. Make sure that the ground connections at the pilot burner , gas valve and ignitor control are intact.
035-14832-003-A-0204 Supersedes: 035-14832-002-A-0302 Unitary Products Group 5005 Y ork Drive, Norman Oklahoma 73069 Subject to change without notice. Printed in U.
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