Install Instructions

VU53; VU54 Fan Coil Valves
Dimensions :
Fig. 1 Mounting Dimensions in inches (mm).
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
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
1. Disconnect power supply before connecting wiring to
prevent electrical shock or equipment damage.
2. On 24V systems, never jumper the valve coil terminals
even temporarily. This can burn out the heat anticipator
in the thermostat.
3. Wear safety glasses to protect eyes from injury
when removing or installing the large spring clip
that holds the actuator plate to the valve body.
Use proper snap ring pliers to remove or install
spring clip.
Mounting
The valve can be mounted in any position on a vertical
line. See Fig. 5. If the valve is mounted horizontally; the
actuator must be even with or above the center line of the
piping. Make sure to leave enough room above the actuator
to remove the actuator or cover for servicing.
3
2
95C-10884-1
A
3/8
(10)
1-3/4
(44)
1-3/4
(44)
7/8 (23)
2-Way
B
B
3-Way
A
A
2 1/8 (54)
(Inverted Flare)
AB
VU53 and VU54 Valve Dimensions with Actuator
VU54 Valve with Actuator
3-3/4
(133)
2-3/8
(60)
2
1
Mount the valve directly in the tube or pipe. Make sure
that the flow through the valve is in the direction
indicated by the arrow stamped on the 2-way valve
body.
On diverting valves, the three fittings or ports are labeled
on the bottom of the valve body casting. Port AB is the
inlet port and is open at all times. Port A is closed and port
B is open when the valve is de-energized. Refer to the
equipment manufacturer instructions to determine which
port (A or B) should be connected to the coil bypass.
Sweat Copper Models
1. Use new, properly reamed pipe, free from dents or
corrosion.
2. Place the valve on the pipe. Rotate valve stem so that
shaft slot points to notch in the side of the body (90° to
flow directions.) See Fig. 6. This protects the plug
inside the valve by removing it from the seat.
3. Sweat the joints, keeping the outer surface free from
solder. DO NOT use silver solder because of the high
melting temperature required.
CHECKOUT
Installing Actuator
Note: VU-series actuator may be wired either before or
after installation on valve body.
1. Rotate valve stem so that shaft slot points to notch on
side of valve body, per Fig. 6.
2. Set position lever on VU-series actuator to MAN.
OPEN position.
3. Snap actuator onto body.
For instructions for operating the valve actuator, see the
Product Data literature provided for the specific actuator.
SERVICE
This valve should be serviced by a trained, experienced
service technician.
1. If the valve is leaking, drain the system and check to see
if the O-ring needs replacing.
2. If the gear train is damaged, replace the entire actuator.
See the Installation section. If the motor is burned out,
replace the motor.
3. Wear safety glasses to protect eyes from injury when
removing or installing the large spring clip that holds
the actuator plate to the valve body.
Use proper snap ring pliers to remove or install spring
clip.
NOTE: Honeywell fan coil valves are designed and tested for
silent operation in properly designed and installed
systems; however, water noises can occur as a result
of excessive water velocity or piping noises can occur
in high temperature (higher than 212°F (100°C))
systems with insufficient water pressure. Valves are
designed for normal cycling operations. Product life
will be shortened if energized continuously or if
operated above rated temperatures.
1
2
VU32, VU53 Valve with Actuator
2-3/8
(60)
7/8 DIA.
(22)
1-1/2
(38)
3-3/4
(133)
15/32
(12)
HEIGHT NEEDED TO REMOVE ACTUATOR COVER.
OPENING FOR 1/2 INCH FLEXIBLE CONDUIT ON OPPOSITE SITE OF
MANUAL LEVER FOR ALL MODELS.
1
2
Fig. 6. Slot position.
GROOVE IN VALVE STEM POINTING
AT SLOT ON SIDE OF VALVE BODY
SLOT
SHAFT SLOT IN VALVE STEM
POINTING TO NOTCH ON SIDE
OF VALVE BODY
SLOT
M10162
VERTICAL
PIPING
HORIZONTIAL
PIPING
Fig. 5. Mounting positions.
B
1-5/16 (33)
1-11/16 (43)
1-11/16 (43)
1-7/8 (47)
1-7/8 (47)
A
1-5/16 (33)
1-3/8 (35)
1-11/16 (43)
1-7/8 (47)
1-7/8 (47)
VALVE BODY SIZE
1/2" Sweat
3/4" Sweat
1" Sweat
1/2" NPT
3/4" NPT