CTHN-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
66 of 91
15.5 Line Voltage Thermostat Wiring (Unitary Heaters Only)
15.6 Low Voltage Thermostat Wiring (Unitary Heaters Only)
L1
L2
Gnd.
Additional
Burners
120
V
-60 Hz
Supply circuit
Line
V
oltage Thermostat
CTH
N
-40 to 150
6-12*
b
urners per thermostat
CTH
N
-175 & 200
3-9*
b
urners per thermostat
*(depending on maximum amp load of thermostat chosen)
Burner 1
Fan 1
L1
L2
Burner 2
Fan 2
L1
L2
L1
L2
L1
L2
T
Additional
Burners
Burner
Fan 1
L1
L2
Burner
Fan 2
L1
L2
L1
L2
L1
L2
L1
L2
Gnd.
120 V - 60 Hz
supply circuit
Low Voltage
Thermostat
R
C
W G
Y
1
2
3
4
5
6
COIL
COIL
Black
Black
White
Red
Transformer Relay
FRONT VIEW
BACK VIEW
CTHN-40 to 150
12 Burners Max
CTHN-175 & 200
6 Burners Max
Description
Part Number
Transformer Relay
90417600K