H Series Brochure

King Electrical Manufacturing Company / 9131 10th Avenue South, Seattle, WA 98108 / phone [phone] / fax [phone] / www.king-electric.com
5
L1 N
140º – 160º
Hot Water
Source
120v power to fan
on one minute delay
Water heater, tankless
water heater or boiler.
CLOSED LOOP
Hydronic System
(isolated from potable water)
<
—
Return Water
Hot Water —
>
Hot Water —
>
Hot Water —
>
<
—
Return Water
<
—
Return Water
Circulation
Pump
120v power to pump
heat exchanger
Tempering
Valve 120°
<
—
Domestic Cold Water
expansion
tank
<
—
Domestic Cold Water
<
—
Domestic Hot Water
This drawing is a
general diagram
and was simplified
for clarity. Other
components like
ball valves, check,
bleed zone valves,
pressure gauges or
temperature wells
may be required
in the system to
operate properly.
check valve
14/3 wire to each thermostat j-box.
Third wire is pump power.
14 /2 wire from j-box to heater.
15 amp maximum circuit size.
check
valve
expansion
tank