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VC7900 - INSTALLATION
INSTALLATION
WHEN INSTALLING THIS PRODUCT:
1. Read these instructions carefully. Failure to follow them could
damage the product or cause a hazardous condition.
2. Check the ratings given in the instructions and on the product to
make sure the product is suitable for your application.
3. Installer must be a trained, experienced service-person.
4. Always conduct a thorough check-out when installation is
completed.
5. While not necessary to remove the actuator from the body, it can
be removed for ease of installation. The actuator can be installed
in any of the four orientations to suit the most convenient wiring
direction. Actuator latching mechanism works only when the
lengths of the actuator and the valve body are parallet to each
other.
6. An extra 25 mm head clearance is required to remove the
actuator.
!
CAUTION
1. Disconnect power supply before connecting
wiring to prevent electrical shock and equipment
damage.
2. Never jumper the supply wires or actuator terminals
even temporarily. This may damage the thermostat.
PLUMBING
The valve may be plumbed in any angle but preferably not with the
actuator below horizontal level of the body. Make sure there is
enough room around the actuator for servicing or replacement.
For use in diverting applications, the valve is installed with the flow
water entering through bottom port AB, and diverting through end
ports A or B. In mixing applications the valve is installed with inlet
to A or B and outlet through AB.
Mount the valve directly in the tube or pipe. Do not grip the actuator
while making and tightening up plumbing connections. Either hold
valve body in your hand or attach adjustable spanner (38 mm or
1-1/2") across hexagonal or flat faces on the valve body. (Figure
4).
NOTE: For trouble free operation of this product, good
installation practice includes initial system flushing
and the installation of 50 micron (or finer) system side
stream filter(s) .
Fig. 4 - Plumbing the VC Valve
COMPRESSION MODELS
For compression fitted models, tighten the compression nuts
enough to make a watertight seal. TAKE CARE NOT TO OVER
TIGHTEN. Maximum torque limit is 45 Nm (33 ft.-lb.) for the 22
mm compression fitting, and 65Nm(48 ft.-lb.) for the 28 mm
compression fitting.
SWEAT MODELS
On sweat fitted valves, the cartridge is shipped loose to avoid
being damaged during the solder operation.
1. Remove valve actuator from body and solder the connecting
pipes in accordance with normal soldering practices.
2. After soldering and valve has cooled, remove cartridge assembly
from plastic bag, insert into the valve body and tighten down with
enclosed wrench(part# 40007029-002) until it bottoms out. DO
NOT OVER TIGHTEN (maximum torque is 4.5 Nm (40 in-lb.).
The top surface of the cartridge will be flush with the top edge of
the body casting.
3. Replace valve actuator.
TO INSTALL REPLACEMENT ACTUATOR
IMPORTANT
Installation of a new actuator does not require
draining the system, provided the valve body and
valve cartridge assembly remain in the pipeline.
1. Check replacement part number and voltage ratings for
match with old device.
2. Disconnect power supply before servicing to avoid electrical
shock or equipment damage.
3. Disconnect leadwires to actuator, or depress tab on Molex
connector and remove. Where appropriate, label wires for
rewiring.
4. The actuator head is automatically latched to the valve. To
remove, press up on the latch mechanism with your thumb.
It is located directly below the white manual open lever (see
figure 5 below). Simultaneously press the actuator down
towards the body with moderate hand force and turn the
actuator counter-clockwise by 1/8 turn (45 degrees). Lift the
actuator off the valve body.
Fig. 5 - Latch Mechanism to detach Actuator
4
TM
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