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PLUMBING & MECHANICAL
Included, Pre-Plumbed
The following components are pre-plumbed
inside the Warmsource-E unit:
f
Automatic air vent
f
Taco ECM variable speed circulator
f
Temperature and pressure (T&P) relief valve
Included, Not Pre-Plumbed
The following are included with Warmsource-E
but
NOT
pre-plumbed. Refer to the WCS Design
Drawings for location and pipe sizing:
f
Pressure reducing valve (maintains a constant
water pressure of 12-18 PSI, and adds “make up”
water for evaporation)
f
Expansion tank (preset at 15 PSI, but can be
reset with a bike pump and ball valve in the
closed position)
f
Backflow preventer (required by code in many
jurisdictions, prevents water in the closed-loop
system from mixing with the domestic water)
f
Air purging valves (a 1
1/4
" combo ball valve/hose
bib, along with several smaller valves, for easy air
purging [be sure to install in the correct location
and water flow direction])
WCS Design Drawings
Our WCS Design Drawings list all the necessary
plumbing and mechanical materials. Reference this
document regularly. Before proceeding, make sure
all boiler components are pre-plumbed per the
Electro Boiler Manual, including:
f
T&P relief valve discharge
f
1/2
" cold water line from the domestic water
supply to the pressure reducing valve
(WCS Design Drawings)
