Honeywell VU443, VU444 Installation Manual

VU53F,N,S,T; VU54F,N,S,T; VU443A; VU444A; VU843A; VU844A FAN COIL VALVES AND ACTUATORS

How to Find Valve Pressure Drop

SI (metric) units (Fig.3)

1.Calculate desired flow through valve in m3/h or litres/ second. L/s = 3.6 X m3/h.

2.Determine the kv rating of the valve.

3.Select the graph corresponding to the kv rating.

4.Determine the pressure drop across the valve by:

1.Locate the flow rate (in m3/h on the left edge of the graph).

2.Draw a line from the flow rate to the intersection of the kv line.

3.Draw a line from the intersection to the bottom to determine the pressure drop in kPa or Bar.

F l o w ( m3/ h )

k P a

B a r

1 0													36
					kv7.0								21
5
									kv6.0				18
						kv3.4					kv3.0
3													10.8
															7.1
													kv0.8
1													3.6
0.5													2.2
													1.1
0.3													0.9
													0.7
0.1													0.4
1	3	5	1 0	30	50			1 0 0					300
0 . 0 1			0 . 1					1 . 0

Pressure Drop

Flow (L/s)

Fig. 3. Flow characteristics of VU53, VU54 valves, SI units.

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 mounting 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 cover or actuator for servicing.

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 valve body.

HORIZONTIAL

PIPING

VERTICAL

PIPING

M10162

Fig. 5 Mounting positions.

95C-10885	4

VU53F,N,S,T; VU54F,N,S,T; VU443A; VU444A; VU843A; VU844A

FAN COIL VALVES AND ACTUATORS

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			ACTUATOR
				COUPLING
	1.	Use new, properly reamed pipe, free from dents or
		corrosion.
	2.	Place the valve on the pipe. Rotate valve stem so that
		the shaft slot points at the 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.	NOTCH	ENSURE SHAFT
	3.	Sweat the joints, keeping the outer surface free from
				SLOT
		solder. DO NOT use silver solder because of the high		POINTS TOWARDS
		melting temperature required.		NOTCH ON SIDE
				OF BODY FOR

FITTING INTO

ENGAGING SHAFT

SHAFT SLOT IN VALVE STEM

POINTING TO NOTCH ON SIDE OF

VALVE BODY

NOTCH

Fig. 7 Installing new actuator.

REMOVING ACTUATOR FROM THE VU-SERIES VALVE

BODY ASSEMBLY (See Fig. 8):

Fig. 6 Slot position.

To Install & Remove Actuator

INSTALLING ACTUATOR ON VU-SERIES VALVE

BODY ASSEMBLY(See Gig. 7) :

1.Orient slot in shaft of VU-series valve body toward notch in side of body (i.e. 90° to water flow.) See Fig. 7. This lifts the ball off seat, prevents damage to the ball seat while soldering, and makes actuator attachment easier.

2.Install valve body into pipe.

3.Wiring connections may be made either before or after actuator installed on 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. 7)

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.

AUTO

OPEN

1. PLACE MANUAL

2. DEPRESS

3. LIFT ACTUATOR

Fig. 8 Removing actuator from valve

5	95C-10885