Rev. D 27-06-11
P/N 474131
27
Figure 23.
Section 3. Installation
CONNECTION OF FIREMAN’S SWITCH OR REMOTE CONTACT
CAUTION
If, while there is line voltage connected to the heater, you touch either line voltage terminal with any 24VAC wire that
is connected to the control board (including the Fireman’s Switch jumper), you will immediately destroy the control
board and void the warranty.
REMOTE CONTROL CONNECTIONS
1. Switch off power to heater at main circuit breaker panel.
2. Unbolt and remove the access door panels.
3. Open control box cover (see
Figure 23
).
4a.
To connect a 2-Wire Control
(such as Pentair’s IntelliTouch
™
or EasyTouch
™
)
or
a timer:
- Remove the factory installed jumper from the Fireman’s Switch terminals.
- Connect wires between the Fireman’s Switch terminals on the heater and the
relay. Connect wires from the controller or timer to the Fireman’s Switch.
Controller, timer or relay should be sized to handle 24VAC at 0.5 Amp (because
it will be completing the 24VAC control board circuit on the heater as shown in
Figure 24
). DO NOT apply line voltage to the Fireman’s Switch terminals. Use
18 gauge wire with a minimum 1.2 mm (3/64 in.) thick insulation rated for a
temperature rise of at least 105° C.
- Knock-outs are provided to route the wires through the
bottom of the control box and past the junction box.
4b.
To connect a 3-Wire Control:
- Connect wires between the control board terminals
on the heater and the external relays, as shown in
Figure 25
on
page 28
. Use at least 2 relays per
heater, to allow for an “OFF setting” on each heater
mode. Select relays that can handle logic level
switching. DO NOT apply line voltage to control
board terminals.
- Move jumper (as shown in
Figure 25
on
page 28
) to
enable external control and to disable the heater
membrane pad’s “Pool ON” and “Spa ON” buttons
(the “OFF” key on the membrane pad remains
functional).
- Knock-outs are provided to route the wires through
the bottom and the top of the control box and past
the junction box.
5. Close control box cover.
6. Re-install the access door panels.
To control heaters that are operated in parallel, connect wiring
at same locations on heater as 2-Wire or 3-Wire Control. It
is imperative that each control circuit is isolated from the
other control circuits, to avoid that current will flow from
one heater to another through the control circuits.
NOTICE:
The fuse for the Fireman’s Switch is a 1.25 Amp
31.75 mm x 6.35 mm fast blow fuse, which is commonly
available.
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
Figure 24.
