510
Indoor / 510 Outdoor Service Manual
Ver. 1.00
62
CONFIDENTIAL
12-11. Relay selection for the pump control connection
The maximum current capacity of 510 Indoor or 510 Outdoor pump control connection is 1 amp.
Before using any relay with the pump control, please check the specifications of that particular relay to
ensure that the current value through the coil will not exceed 1 amp.
For example:
To the right, there is a sample of relay
specifications from an arbitrary brochure. You
can select either the 120 VAC or 240 VAC relay,
because their current values are less than 1A
(1,000mA).
Power supply
for pump
120 VAC
220 VAC etc
These components are NOT included with the water heater and are
external to the unit. They must be acquired separately.
Connect to this “Pump connector”.
Re
ci
rc
ul
at
io
n
pu
m
p
Thermal
relay
120 VAC
220 VAC etc
for relay
Power supply
for relay
