16
Connecting a Standard Gas Heater
For the EasyTouch
®
PL4/PSL4 Control Systems 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 Systems circuit board:
1. Switch the power OFF to the heater.
2. Remove the factory installed jumper from the heater’s “Ext Switch” connector.
CAUTION
IMPORTANT:
DO NOT
disconnect or conductor around the thermostat, pressure switch,
high limit switch, or other safety devices. At the heater, connect the conductors in
accordance with heater manufacturer’s instructions. For older heaters without instructions
for remote operation, connect the conductors to the Fireman’s switch connections in series
with the thermostat, pressure switch, and other safety switches.
3. Run a two-conductor cable from the heater thermostat “Ext Switch” connector to the low
voltage raceway (see illustration on page 5) to the Personality board in the Power Center.
NOTE:
Use 221° 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. Insert the conductors into the
GAS HEATER
two-screw
terminals
(J19)
on the motherboard. For heater circuit board screw terminal location, see
illustration below and page 31).
CAUTION:
Be sure that the conductors from the heater to the EasyTouch PL4/PSL4
Control Systems 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.
5. Set the Power (Thermostat Select) switch to either “Pool” or “Spa.”
6. Set the “Pool” and “Spa” thermostats to their maximum position.
J19
EasyTouch PL4/PSL4 Control System Circuit Board
