acorn controls TEMPFLOW TZV Manual

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
®
TEMPFLOW MODEL TZV THERMOSTATIC ZONE VALVE
1. Please leave this documentation with the owner of the fixture when finished.
3. Check your installation for compliance with plumbing and other applicable codes.
LIMITED WARRANTY
2. Please read this entire booklet before beginning the installation.
UNITED STATES AND CANADA
Acorn Controls warrants that its products are free from defects in material or workmanship under normal use and
service for a period of one year from date of shipment. Acorn's liability under this warranty shall be discharged solely
by replacement of repair of defective material, provided Acorn is notified in writing within one year from date of
shipment, F.O.B. Industry, California.
This warranty does not cover installation or labor charges and does not apply to materials, which have been
damaged by other causes such as mishandling or improper care or abnormal use. The repair or replacement of the
defective materials shall constitute the sole remedy of the Buyer and the sole remedy of Acorn under this warranty.
Acorn shall not be liable under any circumstances for incidental, consequential or direct charges caused by defects in
materials, or any delay in the repair or replacement thereof. This warranty is in lieu of all other warranties expressed
or implied. Product maintenance instructions are issued with each unit and disregard or non-compliance with these
instructions will constitute an abnormal use condition and void the warranty.
NOTES TO THE INSTALLER:
FOR TECHNICAL ASSISTANCE
1.800.743.8259
[e-mail]
Revised: 01/12/2022 EManual #7802-122-000
Model TZV-3110 Shown
Patent Pending
WWW.ACORNENG.COM
P.O. BOX 3527
CITY OF INDUSTRY, CA 91744
ACORN ENGINEERING COMPANY
UNITED STATES OF AMERICA
Acorn Controls Division of Acorn Engineering Company®, A member of Morris Group International™
Federal
Public Law
111-380
(No Lead)
®
TEMPFLOW
MODEL TZV THERMOSTATIC ZONE VALVE
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Page 2 of 5
TZV Installation & Operation Manual
FAILURE TO READ AND FOLLOW PROPER
INSTALLATION AND MAINTENANCE
INSTRUCTIONS MAY RESULT IN PRODUCT
FAILURE WHICH CAN CAUSE PROPERTY
DAMAGE, PERSONAL INJURY AND/OR
DEATH.
ACORN CONTROLS IS NOT RESPONSIBLE
FOR DAMAGES RESULTING FROM
IMPROPER INSTALLATION AND/OR
MAINTENANCE. INSTALLATION OF THIS
VALVE SHALL BE IN ACCORDANCE WITH
UNIFORM PLUMBING CODE.
TO ENSURE ACCURATE AND RELIABLE
OPERATION OF THIS PRODUCT, IT IS
ESSENTIAL TO:
Ÿ Properly design the system to minimize
pressure and temperature variations.
Ÿ Implement an annual maintenance program
to ensure proper operation and temperature
setting of valve(s).
ŸThis valve is factory preset. However, it can
be adjusted. It is the responsibility of the
installer and or facility maintenance personnel
to make sure valve outlet temperature is
properly set.
You are required to thoroughly read all installation
instructions and product safety information before
beginning the installation of this product.
(Not provided by Acorn)
2. Lead-free solder and flux for sealing water
connections.
4. 5/8” combination wrench and an Allen wrench.
1. Wall anchors, screws, nuts and washers as
required.
3. Pipe fittings.
ŸMaximum water pressure is 125 PSI (8.62
bars). Maximum inlet hot water temperature is
180°F (82°C). Temperature adjustment range*
is 100°F - 160°F (38°C - 71°C). Valve assembly
must be drained prior to being subjected to
freezing temperatures. Valve includes integral
check valves.
ŸTo ensure proper installation, review the manual
thoroughly to verify rough-ins before beginning
any work.
ŸInstallation and field adjustment are the
responsibility of the installer.
WARNING:
!
SUPPLIES REQUIRED:
Acorn Controls Division of Acorn Engineering Company®, A member of Morris Group International™
!IMPORTANT
Manual #7802-122-000 Revised: 01/12/2022 E
!IMPORTANT

Page 3 of 5
Acorn Controls Division of Acorn Engineering Company®, A member of Morris Group International™
TZV Installation & Operation Manual
Manual #7802-122-000 Revised: 01/12/2022 E
WATER
HEATER
C
T
T
LOW TEMPERATURE
HOT WATER FIXTURES
HEAT
TRAP
MV17 SERIES
VALVE
BALANCING
VALVE
TZV-0001
T
CHECK VALVE
BALANCING VALVE
TEMP/PRESSURE GAUGE
LOW TEMPERATURE
HOT WATER FIXTURES
CCIRCULATOR
FLOW DIRECTION
31
2"
(89)
31
4"
(83)
11
2"
(38)
15
8"
(41)
LOW TEMPERATURE
HOT WATER FIXTURES
1/2" NPT
CONNECTIONS
OPTIONAL
1/2" NPT CAP
TYPICAL PIPING DIAGRAM
MODEL TZV-0001 SHOWN
13
4"
(44.5)
3
4"
(19)

Page 4 of 5
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”
5
6
7
8
3
2
13
4
LI
NEFROMFI
XTURES
RETURN TO HEATER
10
9
3
9
3
INSTALLER PROVIDED
ADAPTERS
RETURN TO HEATER
LI
NEFROMFI
XTURES

Page 5 of 5
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
2
1
3
4
9
8
7
3
4
2
6
5
LI
NEFROMFI
XTURES
RETURNTOHEATER
LI
NEFROMFI
XTURES
RETURNTOHEATER
LI
NEFROMFI
XTURES
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