38
7 SERIES 700A11 INSTALLATION MANUAL
Thermistor Resistance
Compressor Resistance
Model
Compressor Model
No.
Winding Resistance
208-230/60/1
036
VRJ028UKNP6
0.255
048
VRJ035UKNP6
0.210
060
VRJ044UKNP6
0.210
4/23/12
Thermistor Resistance (10k Ohm)
for FP1, FP2, HWL, LWT and LLT
(EWT with Performance Option)
Thermistor Resistance (1k Ohm)
for compressor discharge line,
suction line, LAT, compressor
ambient and EWT
Thermistor
Temperature
(°F)
Thermistor
Resistance
(Ohms)
Thermistor
Temperature
(°F)
Thermistor
Resistance
(Ohms)
5
75757-70117
20
974.4-973.4
14
57392-53234
25
985.4-984.4
23
43865-40771
30
996.1-995.1
32
33809-31487
35
1007.0-1006.0
41
26269-24513
40
1017.8-1016.8
50
20570-19230
45
1028.6-1027.6
59
16226-15196
50
1039.5-1038.5
68
12889-12093
55
1050.2-1049.2
77
10310-9688
60
1061.2-1060.2
86
8300-7812
65
1072.9-1071.9
95
6723-6337
70
1082.7-1081.7
104
5480-5172
75
1093.4-1092.4
113
4490-4246
80
1103.0-1102.0
122
3700-3504
85
1115.5-1114.5
131
3067-2907
90
1126.2-1125.2
140
2554-2424
95
1136.6-1135.6
149
2149-2019
100
1147.2-1146.2
4/24/12
105
1158.1-1157.1
110
1168.8-1167.8
115
1179.4-1178.4
120
1190.1-1189.1
125
1200.3-1199.3
130
1212.2-1211.2
4/24/12
Pressure Drop
3. First stage cooling will energize after a time delay.
4. Be sure that the compressor and water control valve or
loop pump(s) are activated.
5. Verify that the water flow rate is correct by measuring the
pressure drop through the heat exchanger using the P/T
plugs and comparing to unit performance data in catalog
or view on the AID Tool if Performance Kit is installed.
6. Check the temperature of both the supply and discharge
water (see the Unit Operating Parameters tables).
7. Check for an air temperature drop of 15°F to 25°F across
the air coil (cooling compressor speed 9), depending on
the blower speed and entering water temperature.
8. Decrease the cooling set point several degrees and
verify high-speed blower operation.
9. Adjust the cooling setpoint above the room temperature
and verify that the compressor and water valve or loop
pumps deactivate.
10. Initiate a control signal to place the unit in the heating
mode. Heating set point must be set above room
temperature.
11. First stage heating will energize after a time delay.
12. Check the temperature of both the supply and discharge
water (see the Unit Operating Parameters tables).
13. Check for an air temperature rise of 12°F to 35°F across
the air coil (heating compressor speed 12), depending
on the fan speed and entering water temperature.
14. If auxiliary electric heaters are installed, increase the
heating setpoint until the electric heat banks are
sequenced on (must get to compressor speed 12 before
auxiliary heat enables). All stages of the auxiliary heater
should be sequenced on when the thermostat is in
the Emergency Heat mode. Check amperage of each
element.
15. Adjust the heating setpoint below room temperature
and verify that the compressor and water valve or loop
pumps deactivate.
16. During all testing, check for excessive vibration, noise or
water leaks. Correct or repair as required.
17. Set system to desired normal operating mode and set
temperature to maintain desired comfort level.
18. Instruct the owner/operator in the proper operation of
the thermostat and system maintenance.
NOTE:
Be certain to fill out and forward all warranty
registration papers.
Unit Startup cont.
Model
gpm
Pressure Drop (psi)
30° F
50° F
70°
90° F
110° F
36
11.5
3.40
3.20
3.00
2.80
2.60
9.0
2.70
2.60
2.40
2.20
2.10
7.0
1.65
1.55
1.45
1.35
1.25
5.5
1.10
1.00
0.90
0.85
0.75
4.5
0.68
0.64
0.60
0.55
0.51
48
13.5
4.60
4.40
4.10
3.80
3.50
10.5
2.90
2.70
2.50
2.30
2.20
7.5
1.70
1.60
1.50
1.40
1.30
6.0
1.20
1.10
1.00
0.96
0.91
4.0
0.62
0.61
0.60
0.58
0.56
60
17.0
6.40
6.00
5.60
5.20
4.80
13.5
4.10
3.80
3.60
3.30
3.10
9.5
2.20
2.10
2.00
1.80
1.70
7.5
1.70
1.60
1.50
1.40
1.30
5.0
0.68
0.62
0.58
0.55
0.53
6/29/12
