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P/N 475106 Rev. D 1/2016 MASTERTEMP
™
Pool and Spa Heater Installation and User’s Guide
|
23
MASTERTEMP WIRING DIAGRAM
(3-WIRE SYSTEM)
Figure 30.
2. Installation
GND
L1
G
R
OUND (GND
)
L2
JUNCTION
BO
X
L1
L2
BM
FL
F1
L1
TRAN S
F
I
R
E
M
A
N
S
S
W
I
T
C
H
Fireman's Switch
Completes the heater
24 Volt AC Control
Board Circuit.
DO NOT connect this
circuit to Line Voltage!
Y Y
R
W
G/Y
Y
Y
TERMINAL BOARD
TRANS
TRANS
FUSE
FUSE
L2
Time Clock or Remote
(Purchase Separately –
Supplies Power to
Circulator Pump)
24VAC
24 VAC
BK
O
O
BK
W
R
BR
BL
W
12 Pin
Receptacle
VA
L
TH
IND
GND
24V
A
C
24V
A
C
FS
THERMIST
OR
OPERATING CONTROL
DISABLE TOGGLE
ENABLE TOGGLE
MEMBRANE PAD
CONNECTION
9
1
J6