Install Instructions

VCZA,B,M,N SERIES
3 95C-10948—04
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 and experienced service
technician.
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 parallel to each other.
CAUTION
Disconnect power supply before connecting wiring to
prevent electrical shock and equipment damage.
On 24V systems, never jumper the valve coil
terminals, even temporarily. This may damage the
thermostat.
PROPER USE
These valves are only for use in cold, warm, and hot
water applications. They are designed for a medium
temperature range of from 34 to 203 °F (1 to 95 °C), at
a maximum pressure of 300 psig (20 bar). They are to
be operated with the appropriate Resideo actuators
only. Water must be properly filtered, treated and
conditioned according to local conditions.
The presence of suspended particulate(s) in the
system, such as detached calcium scale, sand, silt,
large quantities of magnetite, etc., can affect
operation of the valve. For trouble-free operation of
this product, good installation practice should
include initial system flushing, chemical water
treatment, and the use of a 50 micron (or finer),
10% system side-stream filter(s). Remove all filters
before flushing.
Put the VC actuator manual lever in the fully up
position or the half open (down) position to allow
initial system flushing with the actuator mounted.
This may be done without electrical hook-up.
Alternatively, reusable flush caps, part # 272866B,
may be purchased separately for use in initial
flushing of dirty hydronic systems.
Do not use boiler additives, solder flux and wetted
materials which are petroleum based or contain
mineral oil, hydrocarbons, or ethylene glycol acetate.
Compounds which can be used, with minimum 50%
water dilution, are diethylene glycol, ethylene glycol,
and propylene glycol (antifreeze solutions).
IMPORTANT
The presence of iron oxide (red rust) in the system
voids the valve warranty.
PLUMBING
The valve may be plumbed in any angle, including vertical
piping, 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).
If assembling valve train on a bench, take care not to deform
body with vice. Do not place the raised "H" logo between the
jaws of the vice. Excess jaw force can deform the body.
Fig. 4. Plumbing of 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 33 ft-lb for
the 22 mm compression fitting, and 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
until it bottoms out. DO NOT OVER TIGHTEN
(maximum torque is 40 in-lb). See Figure 5.
3. Replace valve actuator.
TO REPLACE CARTRIDGE
(IF REQUIRED)
Two-way cartridges fit all two-way bodies. The Cv rating of
a valve can be changed by replacing the cartridge,
allowing for unique combinations. Three-way cartridges fit
all three-way bodies. Cartridges for proportional control
applications have high force springs color-coded red.
M29716