H Series Brochure

Hydronic. Comfort everywhere.
King Electrical Manufacturing Company / 9131 10th Avenue South, Seattle, WA 98108 / phone [phone] / fax [phone] / www.king-electric.com
4
120v power to fan
on one minute delay
OPEN LOOP
Hydronic System
To Domestic
Hot Water 120°
Tempering Valve 120°
<
—
Return Water
Hot Water —
>
Hot Water —
>
Hot Water —
>
<
—
Return Water
<
—
Return Water
<
—
Domestic Cold Water
expansion
tank
Circulation
Pump
120v power to pump
check valve
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.
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.
L1 N
140º – 160º
Hot Water
Source
Circulation
check
valve
Water heater, tankless
water heater or boiler.