Fireman's Switch Connection/Remote Control Connections - Pentair MASTERTEMP 125 Guía De Instalación Y Usuario

that switches off the heater at least 15 minutes before shutting off the pump.
Always use crimp type connectors when connecting two wires.
CONNECTION OF FIREMAN'S SWITCH OR REMOTE CONTACT
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
4a. To connect a 2-Wire Control (such as IntelliTouch
System) 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
to the Fireman's Switch terminals. Use 18 gauge wire
with a minimum 3/64" (1.2mm) 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
23. Use at least 2 relays per heater, to allow
Figure
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 on
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
Rev. C 3/2019
Figure 22).
22). DO NOT apply line voltage
Figure 23) to enable
Figure 23.
Section 3. Installation Instructions
CAUTION
® ®
or EasyTouch Control
TRANS
OPERATING CONTROL
BK O
ENABLE TOGGLE
DISABLE TOGGLE
TERMINAL BOARD
L1
F1
MASTERTEMP 125 Pool and Spa Heater Installation and User's Guide
Figure 22
BK
O
Y
Y
Y Y
J6
MEMBRANE PAD
CONNECTION
W
TRAN S
F
S
I
R W
I
E L2
FL
M T
A C
H
N
BM
S
L1
L2
GND
Time Clock or Remote
(Purchase Separately –
Supplies Power to
Circulator Pump)
Fireman's Switch
Completes the heater
24 Volt AC Control
Board Circuit.
DO NOT connect this
circuit to Line Voltage!
24VAC
29
24 VAC
W
W
R
R