Solahart 151J, Owner'S Manual

Page: 37 / 60

INSTALLATION INSTRUCTIONS – OPEN CIRCUIT SERIES
37
OPEN CIRCUIT SYSTEMS – THERMOSIPHON RESTRICTOR VALVE (TRV)
A Thermosiphon Restrictor Valve (TRV) is available for use on an open circuit system to assist with over temperature
protection of the system. The TRV locates in the top end of the cold pipe assembly. A non-standard cold pipe arrangement
is required to accommodate the TRV.
In Australia, a TRV must be used on a new installation of a 303 system regardless of the type of collector installed and on
a 302 system installed with LCS collectors.
When assembling the cold pipe, ensure:
•
A Silicone Rubber Washer is used between the flared pipe ends and each end of the TRV.
•
The TRV is to be orientated with the copper element probe facing upward toward the tank. The TRV has an arrow and
the word ‘FLOW’ stamped on the outside of the body. The arrow is to point upwards in the direction of the tank.
•
If this pipe assembly is being retrospectively fitted to an existing system, replace existing O-Rings with the new ones
to seal cold pipe to the tank/collector and extension pipe (if any).
Thermosiphon Restrictor Valve (TRV) Assembly
Cold Pipe Assy
TRV Lower
Cold Pipe Assy
TRV Upper
CAUTION!
DO NOT OVERTIGHTEN FITTINGS.
HANDTIGHTEN, THEN ADD HALF TURN
ONLY WITH SPANNER, OTHERWISE
DAMAGE TO WASHER MAY OCCUR.
Cold Water Inlet
344391 (TRV)
The arrow stamped on the
TRV body is to point
toward the tank
To Tank Inlet
(Or Extension Pipe)
330171
(O-Ring)
345096
(Silicone Rubber Washer)