Dwyer 3ZV2 - Manual

Series 3ZV2 Three-Way Detachable Zone Valves
Specifications - Installation and Operating Instructions
Bulletin V-27
®
3ZV2 Series Zone Valves are ideal for flow control in hot and cold
water HVAC systems. Zone valves are typically used in conjunction with
a thermostat to control room temperature. The 3ZV2 is electrically driven
to open and or close via a bidirectional motor. Units are available in 1/2˝,
3/4˝, 1˝, and 1-1/4˝ 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.
3ZV2 models come in floating or modulating input types. Floating units
are controlled directly from the thermostat and modulation units accept
either a 4 to 20 mA or 0 to 10 VDC input. Modulating models include a
motor time out feature that automatically turns off the motor after the full
stroke of the valve to increase motor life. Featured in the 3ZV2 is a
detachable actuator that is easily removable by a turn key allowing the
valve body to be installed without the actuator. Actuator housing is
constructed of fire resistant plastic.
Features:
• Manual override lever
• Removable actuator
• Motor time out for controllers that do not automatically turn off their
signal after the full stroke of the valve
SPECIFICATIONS
Service: Compatible fluids.
Body: 3-way.
Line Size: 1/2˝ to 1-1/4˝.
End Connections: Female NPT (optional BSP, sweat connections).
Pressure Limits: Maximum: 300 psi (20.7 bar), Close-off: 43 psi (2.96
bar).
Temperature Limits: Ambient: 32 to 104°F (0 to 40°C), Process: 37
to 201°F (3 to 94°C).
Wetted Materials: Brass, stainless steel, NBR.
Flow Characteristic: Quick opening.
Input: Floating: 3-wire, Modulating: 0 to 10 VDC or 4 to 20 mA (24
VAC power only).
Power Requirements: 120 VAC or 24 VAC, ±10%, 50/60 Hz.
(Optional 220 VAC).
Power Consumption: Floating: 2.5 VA; Modulating: 3.5 VA.
Electrical Connection: 18 AWG jacketed, 9˝ (228 mm) long.
Cycle Time: Opening Time: 50 to 65 seconds.
Enclosure Rating: General purpose.
Housing Material: PVC and polycarbonate.
Model
3ZV20212
3ZV20214
3ZV20224
3ZV20312
3ZV20314
3ZV20324
3ZV20412
3ZV20414
3ZV20424
3ZV20512
3ZV20514
3ZV20524 Cv
3.8
3.8
3.8
5.4
5.4
5.4
6.7
6.7
6.7
9.8
9.8
9.8 Size
1/2˝
1/2˝
1/2˝
3/4˝
3/4˝
3/4˝
1˝
1˝
1˝
1-1/4˝
1-1/4˝
1-1/4˝ Supply Voltage
120 VAC
24 VAC
24 VAC
120 VAC
24 VAC
24 VAC
120 VAC
24 VAC
24 VAC
120 VAC
24 VAC
24 VAC
A
B
C
Size
1/2˝
3/4˝
1˝
1-1/4˝ A [in (mm)]
4.92 (125)
5 (127)
5.47 (139)
5.75 (146) C [in (mm)]
2.64 (67)
2.64 (67)
2.64 (67)
2.64 (67) B [in (mm)]
3.15 (80)
3.50 (89)
3.66 (93)
4.13 (105)
Input
Floating
Floating
Modulating
Floating
Floating
Modulating
Floating
Floating
Modulating
Floating
Floating
Modulating
W.E. ANDERSON DIV., DWYER
INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057 e-mail: [email protected]
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