Adding Shut-off Valves for Testing a New furnace & for Trouble-shooting down the road
(Note PVC Pipe at bottom right (above), is installed in the concrete for future addition of heat to the
garage, shop or other building)
Adding two shut-off valves on the return lines is done so that if there is a potential
problem with a stopped up heat exchanger or bad pump, it can be diagnosed easily by
the owner, without the need for a service call.
See
TESTING
for more information.
Adding two shut-off valves (Available as a kit):
1. You will need a shut-off valve with 1” Poly pipe connectors on both ends.
2. You will need a 1” Poly pipe connectors and adapter to connect the Pex Pipe to the
brass valve on the right. .
3. You will need a short piece of pipe with 1” NPT threads on both end to connect the
valve to the furnace.
Sealing off the Plate on top of the Hot Water Coil
This is where you add your chemicals
– preferably before sealing it off.
Seal off the black plate (with the handle) that covers the hot
water coil, with silicone all the way around, after all Pex pipe
has been hooked up.
See page 43 for pictures.
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