Wiring Diagrams/External Control Interface; Connection Diagram - Pentair Pool Products MASTERTEMP 250K BTU/HR Installation And User Manual

Pool Heater Wiring Connection Diagram
AGS Switch
Stack Flue Sensor
Gas Valve
BL
BL
W
W
Y/W
R
Y R
External Control Interface Circuit Disabled,
Heater Membrane Pad Enabled
JMP
1
JMP
1
External Control Interface Circuit
Enabled, "Pool On" and "Spa On"
Keys Disabled. "OFF" Key on
Membrane Pad Remains Functional.
Plug –12 pin
120V – Black
240V – Red
1
12 Position
Receptacle
JUNCTION BOX
Line 1
BK
R
Line 2
Ground G
GND

CONNECTION DIAGRAM

Air Flow Switch
Extra Switch 1
Hi-Limit Switch
Pressure Switch
O
O
O
O
PR
PR
PS
HLS
ES1
OPERATING CONTROL
AFS
AGS
SFS
JMP
GAS
1
Spa Line
External Control Interface
W
BK
DIAGNOSTIC INDI CATOR
120 VAC
IGNITER
BK
O
GY
GY
R
GY
W
BK
Y
BL
NOTICE: Touching any 24VAC wire, including
the Fireman's Switch wire, to any 120/240V
terminal while the heater is connected to line
power will immediately destroy the control
board and void the warranty.
Y/R
Y/BL
Y/O
Y/W
Y
Y
Y
Y
Y
BR
BR
J6
MEMB RANE PAD
CONNECTIO N
Common Line
Pool Line
Y
24
F1 F2
VAC
IGNITION CONT ROL
MODULE
S1 S1/
L1 L2 TH IND VAL GND
S2
240 120
GY GY BK GY
Y/W
GND
BK
W
BK
Y
G
GND
36
NA/LP
Models Only
Y/W
J6
Y
NA/LP Models:
J6 incl. pins 1-6;
Connect 9-Wire
Cable as shown
Y/W
Y/O
Y/BL
Y/R
F
S
I
R W
I
E
L1
FL
M T
C
A
N H
BK
F1 S
BK
Y
W
R
R
BLOWER
BL
Y/BL
Y/O Y/R Y Y Y Y
Y Y
24 VAC
SEC
W
O
BK
W
TRAN S
L2
BM
R R W
3661 0200