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Installation
10
309213G
Installation
Heater Resistance Checks
To check heater resistance:
1.
Make sure the power is off and that the disconnect
switch is in the OFF position.
2. Replace any parts whose resistance readings
do not comply with the ranges listed.
NOTE:
Check resistance at ambient room tem-
perature (63°-77° F).
Table 1. Check Heater Resistance on 2-Zone Control (243698)
Table 2. Check Heater Resistance on 4-Zone Control (243699)
Table 3. Therm-O-Flow Gun/Aux Heater Resistance Values
Table 4.
Therm-O-Flow Hose Heater Resistance Values - 50 watts/foot
WARNING
ELECTROCUTION HAZARD
To reduce risk of injury or damage to
equipment, conduct these electrical checks
with the main disconnect OFF.
Zone Component
Between
Terminals
Resistance Values (ohms)
1
DH Hose/Aux
1232 & 1050
Refer to Tables 3 and 4 for resistance
values for the device connected
2
DH Gun/Aux
1262 & 1050
Zone
Component
Between Terminals
Resistance Values (ohms)
1
DH Hose/Aux
2063 &1061
Refer to Tables 3 and 4 for resistance
values for the device connected
2
DH Gun/Aux
2082 & 1061
3
DH Hose/Aux
2103 &1061
4
DH Gun/Aux
2122 & 1061
Watts
Resistance Values
(ohms) at 240 VAC
Therm-O-Flow
Gun/Aux Device
200
288 +30/ -40
Gun, Automatic and Manual
400
144 +14/ -20
Compensator
400*
144 +14/ -20
Manifold
500
115 +12/ -16
Header
Length/ft.
Resistance Values
(ohms) at 240 VAC
6
288 +30/ -40
10
144 +14/ -20
15
144 +14/ -20
20
115 +12/ -16
25
115 +12/ -16