Pressure Switch Settings - Conair Thermolator TW-S User Manual

Pressu r e Swi tc h Se tti ng s
All 250° F {121° C} maximum set point temperature units require 25 psig to operate.
For 250° F {121° C} maximum set point temperature and 48 kW heater units the unit with
36 kW of heat will operate at 25 psig, the last 12 kW of heat will not operate without at
least 35 psig in the suction side tank.
For 300° F {149° C} units please refer to the tables below.
Direct Injection Units at 300 °F {149° C}
Minimum System Pressure Required for System Operation (in psig) for 60 Hz Input Power
(Digit 7 of Part # is B,C, F, A or D)
Heater Capacity Pump Power (Digit 6 of Part #)
(Digit 7 of Part #)
¾ hp
Description Digit 7 Value D
0 kW 0 60
3 kW A 65
6 kW B 65
9 kW C 65
12 kW D 65
18 kW E 65
24 kW F 60
36 kW G N/A
48 kW* H N/A
* For 300°F {149° C}, 48 kW, Direct Injection units the minimum pressure in the suction tank for the 12 kW heater
to operate is 80 psig
Minimum System Pressure Required for System Operation (in psig) for 50 Hz Input Power
(Digit 7 of Part # is E)
Heater Capacity Pump Power (Digit 6 of Part #)
(Digit 7 of Part #)
½ hp
Description Digit 7 Value C
0 kW 0 60
3 kW A N/A
6 kW B N/A
9 kW C N/A
12 kW D N/A
18 kW E N/A
24 kW F N/A
36 kW G N/A
48 kW* H N/A
1 hp 2 hp 3 hp 5 hp 7½ hp
E H J K L
60 60 60 60 60
65 65 60 60 60
65 65 60 60 60
65 65 60 60 60
65 65 60 60 60
65 65 60 60 60
60 60 60 60 60
75 75 75 60 60
75 75 75 60 60
¾ hp 1 hp 2 hp 3 hp 5 hp
D E H J K
60 60 60 60 60
70 70 70 60 60
70 70 70 60 60
70 70 70 60 60
70 70 70 60 60
70 70 70 60 60
70 70 70 70 60
N/A N/A N/A 75 60
N/A N/A N/A N/A N/A
10 hp Description
M Digit 6 Value
60
60
60
60
60
60
60
60
60
7½ hp Description
L Digit 6 Value
60
60
60
60
60
60
60
60
N/A
(continued)
A ppendi x I F-1