WARMBOARD COMFORT SYSTEM // GAS
4
INCLUDED, PRE-PLUMBED
The following components are pre-plumbed inside
the Warmsource-N/P unit:
f
Automatic air vent
f
Expansion tank (preset at 15 PSI, can be reset with
a bike pump and ball valve in the closed position)
f
Constant pressure circulation pump(s), pre-set
to “Constant Pressure ” by Warmboard Inc.
INCLUDED, NOT PRE-PLUMBED
The following are included with Warmsource-N/P
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
Backflow preventer (required by code in many
jurisdictions, it 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])
f
Temperature and pressure (T&P) relief valve
WCS DESIGN DRAWINGS
Our WCS Design Drawings list all the necessary
plumbing and mechanical materials. Reference this
document regularly. Before proceeding, all boiler
components must pre-plumbed per the
HTP UFT
Install Manual
, including:
f
PVC intake and exhaust venting (
pages 31-39
)
f
Gas (
pages 46-47
) and condensation line (
page 40
)
f
T&P relief valve discharge (
page 30
)
f
1/2" cold water line from the domestic water
supply to the pressure reducing valve
(WCS Design Drawings)
Plumbing and Mechanical
