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3. Assemble optional, Temperature Gauge
5
to adapter
6
then to tee
7
or Temperature Gauge and other
components by others. After assembled and
tightened, assemble to HOT port of TZV
1
as shown.
1. Assemble TZV
1
to optional union or union by
others, female half
2
as shown.
Detail “A”.
2. Assemble optional Cap
4
or Ball Valve
3
, or 1/2” NPT
Cap or Ball Valve by others, to COLD port.
4. Assemble optional union male half, or by others,
8
to optional ball valve, or ball valve by others
3
.
Ensure water to specific zone is turned off.
6. Install optional Ball Valve or Ball Valve by others
3
,
with union fitting
9
to return line to Water Heater and
optional Ball Valve or Ball Valve by others
3
to line
coming from fixtures (Zone Leg).
Detail “B”.
7. Install TZV assembly
10
to optional Ball Valve or Ball
Valve by others,
3
on line from fixtures then tighten
to optional, Ball Valve or Ball Valve
3
by others with
union
9
.
Detail “C”.
5. Locate a suitable place to install the TZV at the end
of each zone on return line to water heater;
accessible for servicing and adjusting.
INSTALLATION:
Acorn Controls
Division of Acorn Engineering Company
®
, A member of Morris Group International
™
TZV Installation & Operation Manual
!
IMPORTANT
Manual #7802-122-000
Zone Valve(s):
The TZV's are factory set to maintain a loop temperature of 110°F. Temperature adjustments can be
made in approx. 5°F increments/decrements by rotating the TZV stem one full turn CCW or CW respectively. Be sure to
allow enough time for the loop to change temperature and stabilize before readjusting. If recirculation pump deadheading
is a concern, it is recommended to add a pump bypass valve or to manually adjust the TZV in the longest loop/zone to full
hot. This can later be adjusted to a lower temperature as the system stabilizes and reaches an equilibrium point.
Revised: 01/12/2022 E
Detail “B”
Detail “A”
Detail “C”
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L INE FRO
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INSTALLER PROVIDED
ADAPTERS
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L INE FRO
M F IXTU
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