Rev. D 27-06-11
P/N 474131
29
Section 3. Installation
MASTERTEMP ELECTRICAL SCHEMATIC LADDER DIAGRAM
L1
L2
240
VAC
240
VAC
IGNITER
L1
S1
S2
L2
F1
F2
BLOWER
GND
GND
CLASS II
TRANSFORMER
24 VAC
24 VAC
24V
OPERATING
CONTROL
24 VAC
LOGIC
TH
IND
AIR
FLOW
SWITCH
HI
LIMIT
SWITCH
WATER
PRESSURE
SWITCH
COM NO
AGS
SWITCH
VAL
GAS VALVE
THERMISTOR
SENSOR
STACK FLUE
SENSOR
NOTES:
1.)
AND TH
L1 L2 F1 F2 S1 24 VAC
S2 GND IND VAL
ARE CONNECTED ON THE IGNITION MODULE.
2. )
3. )
PIN AND SOCKET CONNECTOR.
IF ANY OF THE ORIGINAL WIRES AS SUPPLIED
WITH THE APPLIANCE MUST BE REPLACED,
THEY MUST BE REPLACED WITH TYPE 105˚ C
OR ITS EQUIVALENT.
LADDER DIAGRAM
Figure 26.