valutazioni - 5, GPA: 4
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Util. Volt Max Util. Volt Compressor Data No. of Comp Aux Pump Amps Desup Pump RLA MCA Max FuseRLA LRA GSWD024 208-230/60/1 197 253 11.4 56.0 1 2.5 0.4 17.2 25 GSWD036 208-230/60/1 197 253 15.0 73.0 1 2.5 0.4 21.7 35 GSWD042 208-230/60/1 197 253 18.4 95.0 1 2.5 0.4 25.9 40 GSWD048 208-230/60/1 197 253 20.4 109.0 1 2.5 0.4 28.4 45 GSWD060 208-230/60/1 197 253 28.0 169.0 1 2.5 0.4 37.9 60 GSWD072 208-230/60/1 197 253 32.1 169.0 1 2.5 0.4 43.0 70 WSHP-SVX02A-EN Pre-Start Checklist Pre-Start-up Checklist Before energizing the unit, the following system devices must be checked: ____ Is the high voltage power supply correct and in accordance with the nameplate ratings? ____ Is the field wiring and circuit protection the correct size? ____ Is the low voltage control circuit wiring correct per the unit wiring diagram? ____ Is the piping system clean/complete and correct? (A recommendation of all system flushing of debris from the water to-refrigerant heat exchanger, along with air purging from the water-to-refrigerant heat exchanger be done in accor dance with the Closed-Loop/Ground Source Heat Pump Systems Installation Guide). ____ Is vibration isolation provided? (i.e. unit isolation pad, hosekits) ____ Is unit serviceable? (See clearance specifications on page 6). ____ Are the low/high-side pressure temperature caps secure and in place? ____ Are all the unit access panels secure and in place? ____ Is the thermostat in the OFF position? ____ Is the water flow established and circulating through all the units? ____ Is the zone sensor correctly wired and in a good location? ____ Has all work been done in accordance with applicable local and national codes? ____ Has heat transfer fluid been added in the proper mix to prevent freezing in closed system application? WSHP-SVX02A-EN Sequence of Operation Initial Unit Start-up Start-up with the system controls is included below: Note: Air Handlers should not be operated in the construction phase of dry walling. The air-to-refrigerant coil will foul, and the warranty will be void. 1.Set the system control to the desired mode of operation. 2.Set the control switch to fans and circulation pumps. The compressor should NOT run. 3.Reduce the temperature control setting until the compressor, reversing valve, solenoid valve, and loop pump are energized. Adjust water flow utilizing pressure/temperature plugs and comparing to tables contained in specification sheet data. Water leaving the heat exchanger should be warmer than the entering water temperature (approximately 9°F-12°F); compressor amps should be within data plate ratings; the suction line should be cool with no frost observed in the refrigerant circuit. 4.Check the cooling refrigerant pressures against values in Table OP1. (Page 22). 5.Turn the system control switch to the OFF position. Unit should stop running and the reversing valve should de-energize. 6.Leave unit off for approximately FIVE minutes to allow for pressure equalization. 7.Turn the thermostat to the lowest setting. 8.Set the thermostat system switch to the opposite mode of operation. 9.Adjust the temperature setting upward until the unit is energized. A water temperature decrease of approximately 5°F 9°F leaving the heat exchanger should be noted. The compressor operation should be smooth with no frost observed in the refrigeration circuit. 10.Check the heating refrigerant pressures against values in Table OP1. (Page 22) 11.Set the system control to maintain the desired space temperature. 12.Instruct the owner on system operation. WSHP-SVX02A-EN Operating Pressures Operating Pressures Table OP-1: Cooling mode operating pressures Unit Size Entering Entering Source Temperature (Degree F) Load 50 86 104 (Degree F) Suction Pressure Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure Discharge Pressure EXWA 240 53.6 46-56 103-143 49-59 188-228 49-59 238-278 EXWA 240 86 61-71 111-151 84-94 205-245 87-97 259-299 Table OP-2: Heating mode operating pressures Unit Size Entering Entering Source Temperature (Degree F) Load 50 68 104 (Degree F) Suction Pressure Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure Discharge Pressure EXWA 240 75 46-56 160-200 65-75 170-210 86-96 183-223 EXWA 240 104 49-59 245-285 68-78 254-294 94-107 268-308 EXWA 240 122 49-59 310-350 68-78 320-360 95-105 333-373 WSHP-SVX02A-EN Operating Pressures Water Pressure Drop Tables 6 and 7 should be used to define feet of head/pressure drop. Note: To calculate feet of head, when using gauges that read in PSIG, multiply PSI by 2.31. Table 6: Cooling water pressure drops (WPD) in feet of head Table 7: Heating water pressure drops (WPD) in feet of head Unit Size GPM Source Load EWT F Ft. Head Pressure EWT F Ft. Head Pressure 024 3.8 80 1.3 53.6 1.6 7.0 4.5 5.4 8.9 7.2 8.7 036 4.6 80 1.9 53.6 2.3 8.5 6.6 7.9 10.8 10.6 12.7 042 5.2 80 2.4 53.6 3.0 9.5 8.6 10.3 12.1 14.1 17.1 048 6.0 80 3.3 53.6 4.0 11.0 11.6 14.0 14.0 19.1 23.1 060 7.6 80 5.4 53.6 6.5 14.0 19.1...
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