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NS SPLIT INSTALLATION MANUAL
Dual Capacity Models
Unit Operating Parameters
Note: Cooling performance based on entering air temperatures of 80º F DB, 67º F WB.
Heating performance based on entering air temperature of 70º F DB.
First Stage Operation
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat Subcooling
Water Temp
Rise °F
Air Temp
Drop °F DB
1.5 125-140 205-225 9-15 3-10 17-21 17-23
3.0 120-135 190-210 9-15 3-10 8-12 17-23
1.5 135-145 260-290 9-18 5-11 16-20 17-23
3.0 126-143 230-250 9-18 5-11 9-13 17-23
1.5 138-150 315-345 8-14 7-14 14-20 17-23
3.0 136-148 300-330 8-14 7-14 8-12 17-23
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat Subcooling
Water Temp
Drop °F
Air Temp
Rise °F DB
1.5 76-89 260-325 7-12 4-16 5-9 12-16
3.0 80-93 265-330 7-12 4-16 3-7 14-18
1.5 105-120 295-355 7-14 4-16 7-11 18-22
3.0 110-125 300-360 7-14 4-16 5-9 20-24
1.5 135-155 330-385 9-14 7-15 8-12 24-28
3.0 140-160 335-390 9-14 7-15 6-10 22-30
Second Stage Operation
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat Subcooling
Water Temp
Rise °F
Air Temp
Drop °F DB
1.5 120-135 215-235 10-16 3-11 17-21 17-23
3.0 115-130 200-220 10-16 3-11 8-12 17-23
1.5 121-136 270-305 9-15 5-12 16-20 17-23
3.0 118-133 255-285 9-15 5-12 9-13 17-23
1.5 126-143 325-360 8-14 7-15 14-20 17-23
3.0 123-140 310-340 8-14 7-15 8-12 17-23
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat Subcooling
Water Temp
Drop °F
Air Temp
Rise °F DB
1.5 72-81 280-330 6-12 10-20 5-9 12-16
3.0 76-85 285-335 6-12 10-20 3-7 14-18
1.5 100-115 305-370 6-12 6-18 7-11 18-22
3.0 105-120 310-375 6-12 6-18 5-9 20-24
1.5 133-147 340-400 7-14 4-15 8-12 24-28
3.0 138-152 345-405 7-14 4-15 6-10 22-30
Heating -- No Desuperheater
30
50
70
70
90
Entering Water
Temp °F
Water Flow
GPM/Ton
Entering Water
Temp °F
Water Flow
GPM/Ton
Cooling -- No Desuperheater
50
Entering Water
Temp °F
Water Flow
GPM/Ton
Cooling -- No Desuperheater
50
70
90
Entering Water
Temp °F
Water Flow
GPM/Ton
Heating -- No Desuperheater
30
50
70