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YCZ-IOM-1F
INSTALLATION
18-EB21D4-7
Library Service Literature
OPERATION
Product Section Unitary
Product Packaged Gas/Electric
Model YCZ
MAINTENANCE
Literature Type Installation, Operation, Maintenance
Sequence 1F
ALL phases of this installation must comply with
Date December 2002
NATIONAL, STATE AND LOCAL CODES
File No. SV-UN-RT-YCZ-IOM-1F 12/02
Supercedes New
Model:
Single Package Two Stage
YCZ036F1/3M0B, 4MOA
YCZ050F1/3HOA, 4H0A
Gas/Electric 16 SEER
YCZ060F1/3M0B, 4M0A
BAYLIFT002A
Convert
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GENERAL INFORMATION IMPORTANT: Read this entire manual before IMPORTANT: DO NOT CONNECT GAS PIPING TO THE UNIT beginning installation procedures. UNTIL A LINE PRESSURE TEST HAS BEEN COMPLETED. DAMAGE TO THE GAS VALVE MAY RESULT IN AN UNSAFE ▲WARNING: BODILY INJURY CAN RESULT FROM CONDITION. THIS UNIT SHOULD NEVER BE EXPOSED TO HIGH VOLTAGE ELECTRICAL COMPONENTS, FAST MOVING FANS, GAS LINE PRESSURE IN EXCESS OF 14 INCHES WATER AND COMBUSTIBLE GAS. FOR PROTECTION FROM THESE COLUMN.
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TYPICAL ROOFTOP INSTALLATION WITH FULL PERIMETER CURBS 1 (YCZ036,050,060F Models) FIELD SUPPLIED SUPPORTS AT EACH END OF CURB ROOFING ROOF INSULATION FIELD SUPPLIED CANT STRIP ROOF DECK FIELD SUPPLIED RIGID INSULATION ROOF MOUNTING CURB SUPPLY AIR RETURN AIR DUCT DUCT TYPICAL ROOFTOP INSTALLATION WITH BAYCURB030A,038A 2 (YCZ036,050,060F Models) SEE NOTE 1 SEE NOTE 2 FIELD SUPPLIED SUPPORTS AT EACH END OF CURB ROOFING ROOF INSULATION FIELD SUPPLIED CANT STRIP ROOF DECK FIELD SUPPLIED RIGID INSU
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DIMENSIONAL DATA YCZ036,050,060F OUTLINE – BACK 3 NET UNIT CORNER WEIGHT (LBS) WEIGHT AB C D E F G H J K L M N P MODEL (LBS) W1 W2 W3 W4 YCZ036F 161 106 104 157 528 64 36 29-3/16 18-9/16 11-1/16 6-9/16 11-1/8 17 18-1/2 25-1/2 17-1/2 10 3 8-3/4 YCZ050F 172 121 137 196 626 24 26-1/2 65-1/8 45 33-3/8 21-1/16 15-1/16 4-15/16 9-1/8 21-15/16 20 14 3-1/2 8-5/16 YCZ060F 195 129 132 199 656 22-3/4 25-1/2 Page 4
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DIMENSIONAL DATA YCZ036,050,060F OUTLINE – FRONT 4 CLEARANCE TO RECOMMENDED SERVICE CLEARANCE COMBUSTIBLE MATERIAL BACK * 6.0" BOTTOM 0.0" LEFT SIDE 30.0" BACK 1.0" RIGHT SIDE 24.0" LEFT SIDE 6.0" FRONT 42.0" RIGHT SIDE 6.0" * 18" WITH FRESH AIR ACCESSORY FRONT SIDE 12.0" * 30" WITH ECONOMIZER TOP 36.0" MODEL AB C D YCZ036F-M 64 36 29-3/16 27-1/2 YCZ050F-M 65-1/8 45 33-3/8 27-15/16 YCZ060F-M Page 5
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CONVERTING HORIZONTAL TO DOWNFLOW 5 NOTE SUPPLY OPENING 1. REMOVE SCREW NEAREST TO THE OPENING AND PULL THE PANEL FIRMLY HEATER EXCHANGER TUBES TOWARD THE OUTSIDE OF THE UNIT TO DISENGAGE THE BACK ATTACHMENT. RETURN OPENING 2. REMOVE RIGHT HAND SCREW AND MOVE PANEL TO THE RIGHT OR RE- MOVE BOTH SCREWS. SHEET METAL HORIZONTAL RETURN SCREWS AIR COVER HORIZONTAL SUPPLY AIR COVER REQUIRED CLEARANCE FOR UNIT INSTALLATION 6 AND ROOF PENETRATION HOLE SIZE REQUIRED D A SERVICE SERVICE CLEARANCE CLEAR
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LOCATIONS AND RECOMMENDATIONS 3. See the unit’s nameplate for the absolute minimum clearance HORIZONTAL AIRFLOW APPLICATION between the unit and any combustible surface(s). 1. These units are design certified for outdoor installations. These IMPORTANT: units may be installed directly on wood flooring or on Class A, Class B, or Class C roof covering material. The discharge air 1. Remove the Flue and Air Inlet Hood with gasket from the return from the condenser fans must be unrestricted for a m
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LOCATIONS AND RECOMMENDATIONS continued from page 7 15. Access and service clearances for the unit must be given Examine all flue product-carrying areas of the furnace, its vent careful consideration when locating the duct entrance open- system, and the main burner for safe operation. A periodic ings. Figure 4 provides unit dimensions. inspection of the furnace should be made at the start of each heating season. 16. All fabricated outdoor ducts should be as short as possible. Replacement parts
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INSTALLATION IMPORTANT: Do not lift the unit without test lifting for PLACING THE UNIT ON A MOUNTING CURB balance and rigging. Do not lift the unit in windy conditions or above personnel. Do not lift the unit by attaching a 1. The unit is designed with a perimeter drip lip that is lower that clivus, hooks, pins, or bolts to the unit casing, casing the unit base bar, see Figure 7, inset A. hardware, corner lugs, angles, tabs, or flanges. Failure to observe these warnings may result in equipmen
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INSTALLATION ROOFTOP -- UNITS 4. Place the unit on the frame or roof curb. Refer to Figures 9 or 10. For roof top applications using a field fabricated frame and ducts, use the following procedure: 5. Secure the unit to the frame or roof curb. 1. The frame must be located and secured by bolting or welding 6. Insulate any ductwork outside of the structure with at least two to the roof. Flashing is required. (2) inches of insulation and then weatherproof. There must be a weatherproof seal where
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INSTALLATION GROUND LEVEL -- HORIZONTAL UNITS 2. Attach the supply and return air ducts to the unit. For ground level installations, the unit should be positioned on a pad 3. Insulate any ductwork outside of the structure with at least 2 the size of the unit or larger. The unit must be level on the pad. The inches of insulation and weatherproof. There must be a weather- pad must not come in contact with the structure (See Figure 11.) Be proof seal where the duct enters the structure. sure the
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DUCTWORK ATTACHING DOWNFLOW DUCTWORK TO ROOF CURB ATTACHING HORIZONTAL DUCTWORK TO UNIT Supply and return air flanges are provided on the roof curb for easy All conditioned air ductwork should be insulated to minimize heating duct installation. All ductwork must be run and attached to the curb and cooling duct losses. Use a minimum of two (2) inches of before the unit is set into place. insulation with a vapor barrier. The outside ductwork must be weatherproofed between the unit and the build
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GAS PIPING INSTALLATION CAUTION: Before making the gas pipe connection give seri- NOTE: If this is an LPG application, consult your LPG supplier ous consideration to providing the required clearance neces- for pipe sizes and deliveries. sary to remove the access panels on the unit (e.g., economizer and filter access panels). GAS PRESSURE SETUP PRECAUTIONS NOTE: In the absence of local codes, the installation must conform with American National Standard--Z223.1--National ▲WARNING: NEVER USE AN
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GAS PIPING INSTALLATION NOTE: The shut-off gas cock must be installed outside of the unit and should meet the specifications of all applicable national BURNER & VALVE ILLUSTRATION t and local codes. 2. Install a ground union joint downstream of the shut-off cock. COVER This joint must also be installed outside of the unit. ALTERNATE MANUAL "ON/OFF" SWITCH 3. Install a drip leg at least six (6) inches in depth next to the union BRACKET-BURNER FUSE LINK HOLD DOWN as shown in Figure 14. This dri
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GAS PIPING INSTALLATION INPUT CHECK AND ADJUSTMENT TABLE 3 GAS FLOW IN CUBIC FEET PER HOUR 1. Make sure all gas appliances are off except the furnace. 2 CUBIC FOOT DIAL Sec. Flow Sec. Flow Sec. Flow Sec. Flow 2. Clock the gas meter with the furnace operating (determine the dial rating of the meter) for one revolution. 8 900 29 248 50 144 82 88 9 800 30 240 51 141 84 86 3. Match the “Sec” column in the gas flow (in cfh) Table 3 with the 10 720 31 232 52 138 86 84 time clocked. 1
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FILTER INSTALLATION AIR FILTERS TABLE 4 NOMINAL FILTER* FILTER Filters are to be used with the YCZ036,050,060F heating/cooling UNIT units. The basic unit does not have filters in it. However, a filter CFM Sq.Ft.- SIZE RESISTANCE frame accessory is offered that will allow filters to be installed within YCZ036F 1200 4 0.05 the unit. YCZ050F 1600 5.33 0.05 Otherwise a filter rack must be installed by the installer in the duct work. YCZ060F 2000 6.67 0.05 Affix the filter label supplied with the u
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ELECTRICAL WIRING After all electrical wiring is complete, set the thermostat system the Thermostat System Switch until power has been applied long switch in the OFF position so that the compressor will not run enough to evaporate any liquid R-22 in the compressor. It is and then apply power by closing the system main disconnect recommended that the sump heater be energized for eight (8) hours switch. This will activate the compressor sump heat. Do not change prior to starting. YCZ-F FIELD WI
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START - UP NOTE: Do not use the pressures from the unit's SERVICE FACTS PRE-START QUICK CHECKLIST to determine the unit refrigerant charge. The correct charge is ● Is the unit properly located and level with the proper clearance? shown on the unit nameplate. To charge the system accurately, See Figure 4. weigh in the charge according to the unit nameplate. ● Is the duct work correctly sized, run, taped, insulated, and VOLTAGE weatherproofed with proper unit arrangement? See Ductwork Installa
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START - UP 8. Set the thermostat at the desired temperature setting and the 6. Cycle the thermostat OFF and ON a few times at a rate of not unit will function automatically. more than once every thirty (30) seconds. Check both the control operation and the burner operating conditions. STARTING THE UNIT IN THE GAS HEATING MODE MANIFOLD PRESSURE 1. Check to make sure all grilles and registers are open and all unit access doors are closed before start-up. 1. Connect a manometer to the pressure tap
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SEQUENCE OF OPERATION The rollout switch (FS) is located in the gas compartment near the Call for 2nd stage after 1st stage: inlet of the burners. This is a single use device designed to protect The Y2 thermostat contact closes to the control board. For 1 minute against any form of flame rollout. If this device is opened the gas both compressors are off, (all lights are flashing for 1 minute), than valve is immediately de-energized and the control (IGN) will lockout the board will energize the (
