Installation Manual

1. To wire the thermostat determine which pair of wires are coming
from the breaker panel and which pair lead to the heater and pump.
2. Attach with wire nuts the
Blue lead
(
White lead
on 120Volt mo
del
HW
P120) into the pair of white wires in the Junction box.
3. Take a black wire from the circuit breaker panel and attach it to
the
Bla
ck lead
on the thermostat. This will provide power to the ther-
mostats, LCD display, backlighting and both relay.
4.
Tak
e the
Black wire
that goes to the heater and attach it to the
Yel-
low lead on the thermostat. This will provide a one minute delay of
power to the fan heater when the thermostat is calling for heat.
5. Take the black wire to the circulating pump and attach it to the
Red
lea
d
on the thermostat. This lead has a no delay.
6. Remove cover of thermostat by holding back of thermostat and wi
th
a f
inger and thumb on the top and bottom of the thermostat pull
cover towards you evenly to remove cover and expose mounting
holes and buttons.
7. Push the wires carefully into the junction box making sure no wire
s
are
pinched or will get in the way of the screws mounting the ther-
mostat. Now attaching the thermostat to the wall with the #6-3
2
scr
ews provided
.
8.
Hold thermostat into wall box and place screws in top and bottom
mounting hole and attach to wall box.
9. Turn on power and test by increasing set point to higher than room
temperature by tapping the up arrow keys. There will be up to a 3
minute delay in turning on circulation pump. The indicator light will
turn on and you will hear a small click and at the same time the cir-
culation pump should be on. After one minute the second relay wi
ll
turn on and
operate the heaters fan. Both relays will shut off wh
en
tem
perature is satisfied. Turn the thermostat down by tapping on
the
do
wn arrow keys.
Wiring Instructions
240
White 120
Wiring for HWP120 and HWP230
Hot Water System Programmable Thermostat
Fahrenheit to Celsius
On the bottom edge of the ther-
mostat there are air vents. One
of the vents on the left side just
behind the illumination switch
there is a larger opening with a
pin connector attached. With a
needle nose pliers pull the con-
nector off. This will put the
thermostat into the metric Cel-
sius Mode.
Display Change
4
Yellow
1 minute Delay
on make
Typically to
circulating pump
or neutral
King Electrical Mfg. Co. 9131 10th Ave. So. Seattle, WA 98108
Phone: [phone] Fax: [phone]
www.king-electric.com
Two Circuit Control