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Acorn Controls Division of Acorn Engineering Company®, A member of Morris Group International™
TZV Installation & Operation Manual
1. Loosen locknut 6. Detail “B”
4. Tighten locknut 6 to prevent any unauthorized
or accidental temperature adjustment.
5. Re-check temperature gauge 9.
3. Using an Allen wrench 7 turn adjustment stem
8 counterclockwise for hotter or clockwise for
colder outlet temperature. Detail “C”
2. Let temperature can stabilize.
ADJUSTMENT:
Detail “A”
Detail “B”
Detail “C”
3. With ball valves 2 and 3 closed, slowly open
ball valve 4. Detail “A”
5. Slowly open ball valve 3 to allow the system to
be purged of any remaining air.
2. Turn on water to specific zone.
6. Once a constant flow of water is coming out of
the hose 1, close ball valve 2 and remove hose
1.
1. Connect installer provided 1/2” hose 1 to ball
valve 2, on cold port of valve and run to a
drain. Detail “A”
4. Slowly open ball valve 2, allowing the zone to
purge any air in the line.
PURGING ZONE:
Manual #7802-122-000 Revised: 01/12/2022 E
RETURN TO HEATER
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The Cold Water Port must be piped with either the
optional Cap, or Cap by others, or optional
lockable Ball Valve, or Ball Valve by others. Failure
to do so will result in water damage and will not be
covered under warranty by Acorn Controls or
Acorn Engineering Company.
!
IMPORTANT
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