SERIES-3000 VU52, VU53, VU54; VU442, VU443, VU444; VU842, VU843, VU844 FAN COIL VALVES AND ACTUATORS
5 95C-10885—01
(1) Locate the flow rate at the bottom of the
graph.
(2) Draw a line up from the flow rate to the inter-
section of the curve.
(3) Draw a line from the intersection to the left
edge of the graph to determine the pressure
drop in psi, or to the right edge to determine
the pressure drop in feet of Head. (Pressure
drop in feet of Head = psi X 2.2.)
Fig. 2. Flow characteristics of VU52, VU53, VU54 valves, ANSI units.
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous 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, licensed
service technician.
4. After installation is complete, check out product
operation as provided in these instructions.
Disconnect power supply before connecting
wiring to prevent electrical shock or equipment
damage.
On 24V systems, never jumper the valve coil
terminals even temporarily. This can burn out the
heat anticipator in the thermostat.
Wear safety glasses to protect eyes from injury
when removing or installing the large spring clip
that holds the actuator mounting plate to the valve
body.
Use proper snap ring pliers to remove or install spring clip.
Ensure that spring clip is properly seated before
repressurizing valve.
Mounting
The valve can be mounted in any position on a vertical
line.
See Fig. 3 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 cover or actuator for servicing.
IMPORTANT
Make sure that the flow through the valve is in the
direction indicated by the arrow on the valve body.
2-way valves must close against the flow to pre-
vent water hammer.
0.1
1
10.0
100
0.0
PRESSURE
DROP
(PSI)
1.0CV
3.5CV
8.0CV
218
90
43.5
21.8
13.1
8.7
4.4
2.2
0.9
0.4
0.2
0.3
0.5
3
5
30
50
FLOW RATE (US GPM)
MCR32077
HEAD
(FEET)
4.0CV
7.0CV
5.0 10.0
15.0 20.0 25.0
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