Installation manual

26
ENVISION SERIES INSTALLATION MANUAL
Unit Operating Parameters
Cooling--NoDesuperheater
EnteringWater
Temp°F
Water
FlowGPM/
Ton
NSZ022thruNSZ060 NSZ070 NSZ022thruNSZ070
Suction
Pressure PSIG
Discharge
Pressure PSIG
Suction
Pressure PSIG
Discharge
Pressure PSIG
Superheat Subcooling
WaterTemp
Rise°F
AirTemp
Drop°FDB
50
1.5 115-150 205-245 115-130 205-245 12-22 7-14 5-22 18-24
3.0 110-145 200-235 110-125 200-235 14-26 6-12 8-12 18-24
70
1.5 125-160 260-300 125-160 275-300 8-14 8-12 5-19 18-22
3.0 115-150 265-295 115-135 265-295 9-16 4-16 5-12 18-22
90
1.5 125-160 320-370 125-160 330-370 8-14 6-13 14-22 18-22
3.0 120-150 305-355 120-150 325-365 9-16 4-16 5-12 18-22
Heating--NoDesuperheater
EnteringWater
Temp°F
Water
FlowGPM/
Ton
NSZ022thruNSZ060 NSZ070 NSZ022thruNSZ070
Suction
Pressure PSIG
Discharge
Pressure PSIG
Suction
Pressure PSIG
Discharge
Pressure PSIG
Superheat Subcooling
WaterTemp
Drop°F
AirTemp
Rise°FDB
30
1.5 65-85 290-310 65-85 330-360 7-13 2-21 7-10 18-24
3.0 70-90 265-330 70-90 335-365 6-12 2-21 3-7 22-26
50
1.5 95-120 320-345 95-120 395-430 6-12 2-21 5-11 21-34
3.0 100-125 280-365 100-125 375-405 6-12 4-22 5-11 24-33
70
1.5 135-155 315-380 135-155 435-485 8-14 10-20 8-14 26-46
3.0 135-156 315-395 135-155 440-490 8-14 10-20 3-10 25-48
Single Speed Models - NSZ022 thru NSZ070
NOTE: Cooling performance based on entering air temperatures of 80°F DB, 67°F WB.
Heating performance based on entering air temperatures of 70°DB.
5/29/2008