Honeywell VU444A, VU443A, VU843A, VU844A User Manual
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VU443A; VU444A; VU843A; VU844A
Fan Coil Valve Actuators
PRODUCT DATA
The VU443, VU444, VU843, and VU844 Fan Coil Valve
Actuators are used in conjunction with the VU52, VU53, and
VU54 fan coil valves for controlling the flow of hot or chilled
water. These valves are humidity resistant and are suitable for
use in condensing, non-corrosive environments.
SPECIFICATIONS
Actuator Electrical Rating & Connections: 10 VA maxi-
mum.
Model
VU443A
VU443E SPST
VU444A None 2-way, normally
VU843A
VU844A
Control
CIrcuit
120V,
60Hz
24V,
50-60Hz
Current
Draw (A)
0.07
0.32 None
End
Switch
None
Connection
/Leads Application
2-way, normally
open (use
6” motor
leads
standard.
18”, 36”, or
96”
Leadwires
optional.
VU444,
VU844);
closed (use
VU443,
VU843);
3-way, diverting
(use VU444,
VU844).
Note: Motors for all the above models are Class A, Plated.
End Switch Rating:
2.2 A inductive from 5 to 110 Vac.
1.0 A inductive above 110 Vac to 277 Vac.
Min. DC switching capability: 5 mA @ 24 Vdc.
Maximum Ambient @ Fluid Temperature Rating:
Standard models (with class A motor):
125° F (52° C) ambient @ 200° F (93° C) fluid.
Minimum Ambient Temperature: 34° F (1° C).
Shipping and Storage Temperature: -40° F to 150° F (-40°
C to 65° C).
Atmosphere: Non-corrosive, non-explosive, condensing.
Noise Rating: Low noise - non-obtrusive.
Materials:
Case: stainless steel.
Cover: aluminum.
Sector gear: reinforced with KEVLAR
KEVLAR
®
is a Dupont registered trademark.
®
brand fiber.
Approvals: CSA C/US Certified.
Dimensions: See Fig. 1.
95C-10883-03
VU443A; VU444A; VU843A; VU844A FAN COIL VALVE ACTUATORS
CAUTION
1-3/4
(44)
3/8
(10)
VU ACTUATOR
1-3/4
(44)
3/8
(10)
B
VU53 AND VU54 VALVE DIMENSIONS WITH ACTUATOR
VALVE BODY SIZE
1/2 IN. SWEAT
3/4 IN. SWEAT
1 IN. SWEAT
A
1-3/4
(44)
1-3/4
(44)
AB
A
A
1-5/6 (33)
1-3/8 (35)
1-11/16 (43)
A
7/8 (23)
2-WAY
B
3-WAY
B
1-5/6 (33)
1-11/16 (43)
1-11/16 (43)
M32203
7/8 DIA. (22)
2
1-1/2
(38)
15/32 (12)
VU52 OR VU53 VALVE WITH ACTUATOR
HEIGHT NEEDED TO REMOVE ACTUATOR OR COVER.
1
OPENING FOR 1/2 IN. CONDUIT ON OPPOSITE SITE OF
2
MANUAL LEVER FOR ALL MODELS.
2-3/8
(60)
3-3/4
(133)
1
M32204
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.
1. Disconnect power supply before connecting wir-
ing to prevent electrical shock of equipment damage.
2. On 24V systems, never jumper the valve coil ter-
minals even temporarily. This can burn out the
heat anticipator in the thermostat.
To Install and Remove Actuator
INSTALLING ACTUATOR ON VU-SERIES VALVE BODY
ASSEMBLY
1. Orient slot in shaft of VU-series valve body toward
notch in side of body (i.e. 90° to water flow.) See
Fig.2. This lifts the ball off seat, prevents damage to the
ball seal while soldering, and makes actuator attachment easier.
2. Install valve body into pipe.
3. Wiring connections may be made either before or after
the actuator is installed on the valve body.
4. Place manual operating lever on the actuator in the
MAN. OPEN position.
5. Line up motor coupling to slot in shaft of body and fit the
head onto the valve body, ensuring that the shaft seats
correctly. (See Fig. 2).
6. Snap actuator onto body by pressing down.
7. Make wiring connections. Refer to wiring section for
proper instructions.
Inspect the actuator installation and the valve body to ensure
that all connections and adjustments have been correctly
made. Adjust the thermostat or controller connected to the
valve so that the valve runs through its cycle. Make sure the
valve runs smoothly and positively from closed to open to
closed again.
95C-10883—03 2
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