4
1.800.556.0595
for assistance
Included, Pre-Plumbed
The following components are pre-plumbed inside
the Warmsource unit:
f
Automatic air vent
f
Temperature and pressure (T&P) relief valve
f
Expansion tank (preset at 15 PSI, can be reset with
a bike pump and ball valve in the closed position)
f
Grundfos primary circulator
f
Grundfos constant pressure secondary circulator
Included, Not Pre-Plumbed
The following are included with Warmsource
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
1
1/4
" combo ball valve/hose bib
f
Several smaller combo 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, all boiler
components must be pre-plumbed per the Lochnivar
Noble Manual, including:
f
PVC intake and exhaust venting (pg. 14-32)
f
Gas (pg. 50-53) and condensation line (pg. 58)
f
Pressure relief valve discharge (pg. 34)
f
1/2
" cold water line from the domestic water
supply to the pressure reducing valve
(WCS Design Drawings)
PLUMBING AND MECHANICAL
