York D2CG300 - Manuals

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Manuals:

Manual

Manual York D2CG300

Summary

Page 2 - FIGURES; No. Description Page; TABLE OF CONTENTS

General ................................................................................ 1Inspection............................................................................. 1Reference............................................................................. 1Approvals ..........................

Page 3 - For ground level installation, use a level concrete slab with; RIGGING AND HANDLING; CAUTION: On gas heating units, an adhesive backed label is; CLEARANCES; INSTALLATION; TABLE 1 - UNIT APPLICATION DATA

LIMITATIONS These units must be installed in accordance with the followingapplicable national and local safety codes:In 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 Z21.47a.4. Local gas and electric utility requiremen...

Page 5 - CONTROL WIRE SIZES

FIG. 5 - TYPICAL FIELD WIRING Wire Size 1 AWG. Gauge 22 20 19 18 16 25 40 50 65 100 Maximum Wire Length 2 Feet Notes: 1. Solid, Class II copper wire CONTROL WIRE SIZES 530.18-N11Y Unitary Products Group 5

Page 6 - NOTE: There may be a local gas utility requirement specifying; TABLE 2 - GAS HEAT APPLICATION DATA; TABLE 3 - PIPE SIZING

THERMOSTAT The room thermostat should be located on an inside wallapproximately 56" above the floor where it will not be subjectto drafts, sun exposure or heat from electrical fixtures orappliances. Follow manufacturer’s instructions enclosed withthermostat for general installation procedure. Se...

Page 8 - CAUTION: Extreme care must be exercised in turning both the

VENT AND COMBUSTION AIR HOODS(DCG Models) Two vent hoods and a combustion air hood (with screens) ares hipped attached to the blower housing in the blowercompartment. These hoods must be installed to assure properunit function. All hoods must be fastened to the outside of thegas heat access panel wi...

Page 10 - TABLE 4 - PHYSICAL DATA

TABLE 4 - PHYSICAL DATA MODELS DCE/DCG 300 EVAPORATOR BLOWER CENTRIFUGAL BLOWER (Dia. x Wd. in.) 18 x 15 FAN MOTOR HP 15 EVAPORATOR COIL ROWS DEEP 4 FINS PER INCH 13.5 FACE AREA (Sq. Ft.) 25.0 CONDENSER FAN (Two Per Unit) PROPELLER DIA. (in.) (Each) 30 FAN MOTOR HP (Each) 1 NOM. CFM TOTAL (Each) 720...

Page 11 - UTILITIES ENTRY DATA

Cont’d. FIG. 10 - DIMENSIONS & CLEARANCES - DCE & DCG All dimensions are in inches. They are sub-ject to change without notice. Certified di-mensions will be provided upon request. CLEARANCES Front 36" Back 24" (Less Economizer)49" (With Economizer) Left Side (Filter Access) 24&#...

Page 12 - DETAIL “Y”

FIG. 10 - DIMENSIONS & CLEARANCES (Cont’d.)- DCE & DCG SUPPLYAIR RETURN AIR OUTDOORAIR 5-1/8" 18-5/8" 27-3/4" 29-5/8" (15 TON)39-5/8" (20 TON) 40-1/2" OUTDOOR AIRCOMPARTMENTACCESS FILTER ACCESS 1" NPT FEMALECOND. DRAINCONNECTION DOT PLUG(For pressuredrop reading) ...

Page 13 - POINT LOADS; POINT LOADS; TABLE 7 - FOUR AND SIX POINT LOADS; COOLING APPLICATIONS)

A B C D FRONT 4 POINT LOADS FIG. 11- FOUR AND SIX POINT LOADS A E D B F C FRONT 6 POINT LOADS UNIT 4 - POINT LOADS (LBS) TOTAL A B C D 300 3,130 615 671 962 882 NOTE: These weights are with economizer, high heat, and the largest blower motor available. UNIT 6 - POINT LOADS (LBS) TOTAL A B C D E F 30...

Page 15 - NOTE: All 240 & 480V heaters are provided with manual; OPERATION

COOLING SYSTEM The cooling section is a complete factory package utilizing anair-cooled condenser. The system is factory-charged withRefrigerant-22.The compressors are hermetically sealed, internally sprungand base-mounted with rubber-insulated hold-down bolts.Compressors have inherent (internal) pr...

Page 16 - TABLE 9 - HEAT ANTICIPATOR SETTING

switch is in the “AUTO” position, the blower will operate onlywhen there is a call for heating by the thermostat. b) Upon a call for first-stage heat by the thermostat, the heater contactor (6M) (6M & 7M on 72 KW, 240V) will beenergized.If the second stage of heat is required, heater contactor(7...

Page 17 - OPERATING INSTRUCTIONS; CAUTION: This furnace is equipped with an intermittent pilot; MANIFOLD GAS PRESSURE ADJUSTMENT; B U R N E R C O M P A R T M E N T; FIG 13-GAS VALVE AND CONTROLS

6. Auxiliary Limit Switch (AUX) This control is located inside the heat exchanger compartment and is set to open at190 ° F. It is a manual reset switch. If AUX limit trips, then the primary limit has not functioned correctly., Replace theprimary limit OPERATING INSTRUCTIONS CAUTION: This furnace is ...

Page 18 - NOTE: The correct manifold pressure for these furnaces is; PILOT CHECKOUT

3. To increase the gas pressure, turn the adjusting screw clockwise. NOTE: The correct manifold pressure for these furnaces is 3.65 IWG ± 0.3. PILOT CHECKOUT The pilot flame should envelope the end of the flame sensor. Referto Proper Flame Adjustment figure. To adjust pilot flame, (1)remove pilot ad...

Page 19 - ADJUSTMENT OF TEMPERATURE RISE; SECURE OWNER’S APPROVAL; FIG. 18 - PRESSURE DROP ACROSS A DRY INDOOR; COIL VS SUPPLY AIR CFM; TABLE 11 - GAS RATE - CUBIC FEET PER HOUR

2. Inser t at least 8" of 1/4 inch tubing into each of these holes for sufficient penetration into the air flow on both sides ofthe indoor coil. NOTE: The tubes must be inserted and held in a position perpendicular to the air flow so that velocity pres-sure will not affect the static pressure re...

Page 20 - NORMAL MAINTENANCE; MAINTENANCE; FIG. 19 - TYPICAL FLUE BAFFLE INSTALLATION

If the actual input is not within 5% of the furnace rating (withallowance being made for the permissible range of the regulatorsetting), replace the orifice spuds with spuds of the proper size. NOTE To find the Btu input, multiply the number of cubic feet of gas consumed per hour by the Btu content ...

Page 21 - TROUBLESHOOTING

10. After brushing is complete, blow all brushed areas with air or nitrogen. Vacuum as needed. 11. Replace par ts in the order they were removed in Steps 1 thru 4. 12. When replacing the center and top of the flue collector box, be careful not to tear the adjoining insulation. 13. Ensure that all se...

Page 23 - REPLACEMENT PARTS

REPLACEMENT PARTS COMPRESSOR SECTION • Hermetic compressor • Compressor mounting MOTOR SECTION • Blower motor • Fan motor • Ventor motor ELECTRICAL SECTION • Ignition control • Relay board • Contactor • Circuit breaker • Temperature controls • Capacitors • Relays • Transformers • Connectors GAS HEAT...