Install Instructions

The VU52, VU53 and VU54 high pressure zone valves
are used to control the flow of hot or chilled water in
commercial HVAC equipment such as fan coil units,
terminal reheat coils and convectors.
IMPORTANT
These valves are not for use in systems containing
dissolved oxygen.
SPECIFICATIONS
Models:
VU52: 2-way, normally open.
VU53: 2-way, normally closed.
VU54: 3-way diverting or mixing.
Maximum Temperature:
Standard Models (with Class A motor):
•200°F(93°C) fluid @ 125°F(52°C) ambient.
Minimum Fluid Temperature:
34°F(1°C) for all models.
Maximum Operating Pressure Rating:
300 psi (2000 kPa), PN20.
Flow Characteristics:
Quick opening for on-off application.
Material:
Valve body: forged brass.
Drive shaft stem: brass.
Ball plug: Buna-N rubber.
O-ring seals: EPDM rubber.
Service Medium:
Suitable for hot and chilled water with up to 50%
glycol.
Not for use with potable water or steam.
Dimensions:
See Fig. 1.
Approvals:
CSA C/US Certified.
2002.02 MK Printed in Canada
Form No. 95C-10884-1
VU52; VU53; VU54 Fan Coil Valves
Automation & Control
Honeywell
1985 Douglas Drive North
Golden Valley
MN 55422-3992
1
4
NOTE: Not all body styles are offered for sale in all
markets.
Use VU443/843 actuators ONLY with VU53 2-way valve
bodies. Water hammer may result and actuator life will be
shortened if used on VU54 3-way body.
Use VU444/844 on either VU52 or VU54 valve bodies.
Close-off pressure ratings will be reduced if used with
VU53.
Valve Styles, Sizes, Flow Capacity Rating (C
v
)&
Maximum Close-off Pressure Rating (psi):
In Canada
Honeywell Limited/Limitée
35 Dynamic Drive
Toronto, Ontario
M1V 4Z9
Pipe
Connections
Maximum
Close-off
Pressure
Model
VU52
2-way
normally
open
VU53
2-way
normally
closed
VU54
3-way
diverting
mixing
Flow
Capacity
Rating
Suffix
Type
N
S
S
N
S
Size
1/2"
1/2"
1/2"
3/4"
3/4"
3/4"
1"
1/2"
1/2"
1/2"
3/4"
1"
Cv
1.0
2.3
3.5
3.5
5.0
8.0
8.0
1.5
3.0
4.4
7.0
7.0
Kv
0.9
2.0
3.0
3.0
4.3
6.8
6.8
1.3
2.6
3.8
6.0
6.0
psi
50
30
20
20
12
10
10
28
28
20
12
12
kPa
345
207
138
138
83
69
69
193
193
138
83
83
End Fittings
NPT(internal)
Sweat
Sweat
NPT(internal)
Sweat