Dwyer ZV1 - Manual (Page 2)

Instructions for Operation
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 floor.
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 first powered on, the lever goes back to the
automatic position again.
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:
MAINTENANCE
Upon final 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 field serviceable and
should be returned if repair is needed (field 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.
©Copyright 2010 Dwyer Instruments, Inc. Printed in U.S.A. 3/10 FR # RB-443459-30 Rev.2
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]
Fig. 4
V-24:Model PHO-1 3/9/10 10:33 AM Page 2