16
EASYTOUCH
®
PL4/PSL4 Control System Installation Guide
ConnectingaStandardGasHeater
For the EasyTouch
®
PL4/PSL4 Control System heater control, there are low voltage dry contacts that can
be connected to most gas heaters or heat pumps with 24 VAC control circuits . The following connection
instructions are for gas heaters and heat pumps with low voltage thermostats.
To connect the heater thermostat cable plug to the EasyTouch PL4/PSL4 control system circuit board:
1. Switch the power OFF to the heater.
2. Removethefactoryinstalledjumperfromtheheater’s“ExtSwitch”connector.CAUTION
IMPORTANT: DONOT disconnect or conductor around the thermostat, pressure switch,
high limit switch, or other safety devices. At the heater, connect the conductors in
accordancewithheatermanufacturer’sinstructions.Forolderheaterswithoutinstructions
forremoteoperation,connecttheconductorstotheFireman’sswitchconnectionsinseries
with the thermostat, pressure switch, and other safety switches.
3. Runatwo-conductorcablefromtheheaterthermostat“ExtSwitch”connectortothelow
voltage raceway to the main circuit board in the Power Center. NOTE:Use221°F(105°
C) temperature rated conductor for connection to the heater. When connecting conductors
inside the heater, be cautious of HOT internal parts of the heater. Refer to the minimum
temperature rating for conductors recommended by the manufacturer. See the heater
owners manual for details.
4. Strip back the conductors ¼ in.
5. Insert the conductors into the GASHEATER two-screw terminals (J19) on the
motherboard. For heater circuit board screw terminal location, see diagram below).
CAUTION:Be sure that the conductors from the heater to the EasyTouch PL4/PSL4
Control System Power Center are not near or touching any line voltage conductors in the
heater. Failure to follow these instructions may cause the heater to malfunction.
6. SetthePower(ThermostatSelect)switchtoeither“Pool”or“Spa.”
7. Setthe“Pool”and“Spa”thermostatstotheirmaximumposition.
J19
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