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50TFQ008-012 Single-Package Rooftop Heat Pump Units Installation, Start-Up and Service Instructions CONTENTS Page SAFETY CONSIDERATIONS.........................1 INSTALLATION...................................1-43 Step 1— Provide Unit Support.......................1 • ROOF CURB • SLAB MOUNT • ALTERNATE UNIT SUPPORT Step 2 — Field Fabricate Ductwork..................3 Step 3 — Install Condensate Drain Line and External Trap.................................3 Step 4 — Rig and Place Un

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Group IV (40 F Sat. Suet, 105 F Sat. Disch, 15 F pressure. Superheat, OF Subcooling) Table 2 - Physical Data - R-12, R-500, R22, R-502 Duplex Compressors DUPLEX COMPRESSOR MODEL 5H40-60 5H60-60 5H60-80 5H80-80 5H80-120 5H120-120 R-12 60 75 100 100 125 150 Nominal Horsepower R-500 75 100 100 125 150 175 R-22 100 125 150 150 200 250 R-502 100 125 150 150 200 250 Number of Cylinders 10 12 14 16 20 24 Bore (in ) 3-1/4 3-1/4 3-1/4 3-1/4 3-1/4 3-1/4 Stroke (in ) 2-3/4 2-3/4 2-3/4 2-3/

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Deduct filter and electric heater pressure drops to obtain static pressure available for ducting. NOTES: 1. Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator coil frosting may occur at airflows below this point. 2. Dashes indicate portions of table that are beyond the blower motor capacity or are not recommended. 3. Deduct 10% for 208v. The charging label and the tables shown refer to system temperatures and pressure

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Allow 30-in. clearance to service end of unit and 48 in. above unit. For proper airflow, a 6-in. clearance on 1 side of unit and 12 in. on all remaining sides must be maintained. Maintain a distance of 24 in. between units. Position so water, snow, or ice from roof or eaves cannot fall directly on unit. C B A 3.8.D. (9.53) TIEDOWN KNOCKOUTS (2) PLACES A94199 Dimensions (In.) UNIT MINIMUM MOUNTING-PAD TIEDOWN KNOCKOUT LOCATIONS SIZE DIMENSIONS A B C 018-024 22-1/2 X 22-1/2 3-11/16 18-1/8 14-3/8 0

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In this position, set point is 86 psig. Control set point is then regulated to desired pressure by turning adjustment nut counterclockwise. Each full turn decreases set point by approximately 7.2 psi. Approximately 12 turns counterclockwise lowers the control set point to 0 psig. See Table 5. Table 5 — Capacity Control UNIT 06E,07E NO. OF CONTR % Full Load Capacity 100 67 49 32 % Full Load kW CYL 100 73 57 46 Number of Active Cylinders ALL 4 CYLINDER MODELS 2 4 — 2 — ALL 6 CYLINDER MODELS 4 6 4

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operation. Your heat pump is designed to automatically melt the ice. When in this defrost cycle, it is normal for steam or SAFETY CONSIDERATIONS fog to rise from the outdoor unit. Do not be alarmed! Note to Installer:This manual should be left with the equipment user. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of these or any other appliances. Failure to follow this warning could result in fire, serious injury, or death. Do not use this unit if any part ha

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Boldface indicates field-supplied drive required. 2. indicates field-supplied motor and drive required. 3. Maximum usable output power (BkW) on the 50LJQ008 unit is 1.79 (2.40 Bhp) with standard 1.12 BkW (1.5 hp) motor. The maximum usable output power (BkW) increases to 2.16 (2.90 Bhp) on the 50LJQ012 unit with standard 1.5 BkW (2 hp) motor. Extensive motor and electrical testing on the Weathermaker I units ensures that the full power range of the motor can be utilized with confidence. Using the

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Construct platform using drainage and clearance recommendations above. Locate and construct platform to avoid possible transfer of unit vibration to structure. ON THE ROOF: MOUNT OUTDOOR COIL ON A LEVEL PLATFORM OR FRAME. Unit must be elevated for proper clearance as described under ground installation above. Roof design and water drainage must be planned to prevent units from setting in water. Flash all roof openings to prevent leaks. Step 3 — Mount Indoor Compressor Section on a rigid, soli

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INSTALLATION RECOMMENDATIONS 1. Locate unit away from windows. 2. Ensure that vapor and liquid tube diameters are appropriate to capacity of unit. (See Table 1.) 3. Run refrigerant tubes as directly as possible by avoiding NOTE: Avoid contact between tubing and structure. LIQUID TUBE VAPOR TUBE VAPOR TUBE LIQUID TUBE INSULATION OUTDOOR WALL INDOOR WALL INSULATION CAULK THROUGH THE WALL HANGER STRAP (AROUND VAPOR TUBE ONLY) JOIST 1. MIN (25 mm) SUSPENSION unnecessary turns and bends. 4. Leave som

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If the system does not start again, the green "UNIT ON" light will flash an error code. Microprocessor Control Operation --This system is controlled by a microprocessor designed to give optimum levels of comfort and operating et_ciency. The control is located in the 40QN unit. To operate the unit, the factory- supplied remote controller is required. There are 9 (QNB systems) or 12 (QNE/H systems) operating modes (including the off mode) for the unit. Each mode operates as follows: • Off Mode --W





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