Page 1
Series ZV1 Two-Way Zone Valves
B
Specications - Installation and Operating Instructions
A
Size A in [mm] C in [mm] B in [mm]
1/2˝
3/4˝
1˝
4.15 [105.5]
4.15 [105.5]
4.31 [109.5]
2.48 [63]
2.48 [63]
2.48 [63]
3.54 [90]
3.66 [93]
3.74 [95]
Bulletin V-24
C
The Series ZV1 Two-Way Zone Valves are ideal for ow control in hot and cold water
HVAC systems. Zone valves are typically used in conjunction with a thermostat to
control room temperature. Units are available in 1/2˝, 3/4˝, and 1˝ sizes with 24 or 120
VAC power supply. Easy to install these units are direct replacements for competitor
units. Manual override lever is easily accessible externally. Consult factory for 220
VAC power supply, optional auxiliary switches, and BSP or sweat connections.
MODELS
Normally Open Normally Closed Cv Size Supply Voltage
ZV1022-NO
ZV1024-NO
ZV1032-NO
ZV1034-NO
ZV1042-NO
ZV1044-NO
ZV1022
ZV1024
ZV1032
ZV1034
ZV1042
ZV1044
3.78
3.78
3.78
3.78
8.02
8.02
1/2˝
1/2˝
3/4˝
3/4˝
1˝
1˝
120 VAC
24 VAC
120 VAC
24 VAC
120 VAC
24 VAC
SPECIFICATIONS
Service: Compatible uids.
Body: 2-way.
Line Size: 1/2˝ to 1˝.
End Connections: Female NPT (optional BSP, sweat connections).
Pressure Limits: Maximum: 300 psi (20.7 bar); Close-off: 1/2˝ to 3/4˝: 22 psi (1.5
bar), 1˝: 14.5 psi (1 bar).
Temperature Limits: Ambient: 32 to 104°F (0 to 40°C); Process: 0 to 201°F (0 to
94°C).
Wetted Materials: Brass, SS, NBR.
Flow Characteristic: Quick opening.
Power Requirements: 120 VAC or 24 VAC, ±10%, 50/60 Hz. (Optional 220 VAC).
Power Consumption: 6.5 W.
Input: On/off.
Electrical Connection: 22 AWG, 5˝ (127 mm) long.
Cycle Time: Opening time: 11 seconds; Closing time: 5 seconds.
Enclosure Rating: General purpose.
Housing Material: Aluminum.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219-879-8000
Fax: 219-872-9057
www.dwyer-inst.com
e-mail: [email protected]
Page 2
INSTRUCTIONS FOR OPERATION
SUPPL
Y
HEATING COIL
COOLING/HEATING COIL
RETURN
NORMAL
COOLING/HEATING COIL
POWER SUPPLY
T
NORMAL
220 VAC
WARNING
may change position if power fails or is removed. Never insert any object or body part
into the valve body. Severe injury may occur.
2-way and diverting 3-way valve are installed as Figure 1, 2 and 3 shows. For high
building, pressure reducing valves should be installed on branch pipes at ground oor.
Note: When the valve is mounted on a horizontal pipe, the angle must be positioned
at less than 85° (see Figure 4). When the valve is mounted on a vertical pipe, it must
be prevented from dripping. Manual operating lever: Move the manual operating lever
slowly and hold in the retaining notch, and then the valve is in normal-opened position.
When the valve is rst powered on, the lever goes back to the automatic position
again.
When working on the Actuator/Valve assembly, disconnect the air
or power supply to the actuator. Spring return actuators/valves
85º
85º
M
END "B" INLET
Y
COOLING/
Figure 1: Two-way valve
When install normal-closed two-way valve, the ow direction is from end “B” to “A”,
for normal-open valve, it is from end “A” to “B”. In both situations, the valve closing
direction is opposite.
M
END "B"
- CLOSED
INLET
Figure 2: Three-way valve
END "A" OUTLET
END "A" BYPASS
NORMAL - OPENED
POWER SUPPL
TWO WIRE
THERMOSTAT
RETURN
POWER SUPPLY
TWO WIRE
THERMOSTAT
SUPPLY
Figure 4
When installing a diverting 3-way valve, end “B” is the supply to the coil, end “A” is
the by-pass. There is no mark for an inlet. End “A” and “B” are marked on the bottom
of the valve.
When the valve has an auxiliary micro switch, the wiring diagram is as following:
CONTROLLER
AUX. SWITCH
BLACK
BLACK
MAINTENANCE
Upon nal installation of the Series ZV1 Two-Way Zone Valves, no routine maintenance
is required. A periodic check of the system calibration is recommended. The Series
ZV1 is not eld serviceable and should be returned if repair is needed (eld repair
should not be attempted and may void warranty). Be sure to include a brief description
of the problem plus any relevant application notes. Contact customer service to
receive a return good authorization number before shipping.
ORANGE
ORANGE
END "B"
- CLOSED
Figure 3: Three-way valve with box change-over switch
M
INLET
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
END "A" BYPASS
NORMAL - OPENED
BYPASS
SUPPLY
RETURN
THREE WIRE
THERMOSTA
Printed in U.S.A. 8/22 FR# 443459-30 Rev. 3©Copyright 2022 Dwyer Instruments, Inc.
Phone: 219-879-8000
Fax: 219-872-9057
www.dwyer-inst.com
e-mail: [email protected]
Loading...