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IMPORTANT
Use this valve in hydronic heating systems that do not
contain dissolved oxygen in the system water. The
dissolved oxygen, which is found in systems that
have a frequent source of makeup water, causes the
rubber plug inside the valve to deteriorate and even-
tually fail.
MOUNTING
The valve can be mounted in any position on a vertical line.
See Fig. 9. If the valve is mounted horizontally; the powerhead
must be even with or above the center line of the piping. Make
sure to leave enough room above the powerhead to remove
the cover for servicing.
HORIZONTAL
PIPING
VERTICAL
PIPING
Fig. 9. Mounting positions.
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.
On diverting valves, the three fittings or ports are labeled on
the bottom of the valve body casting. See Fig. 1. Port AB is the
inlet port and is open at all times. Port A is closed when the
valve is de-energized; 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.
FLARE FITTING MODELS
Use new, properly reamed pipe, free from chips. The valve
body is threaded for standard 5/8 in. OD copper, 45 degree
SAE flare fitting nuts. These nuts are not furnished with the
valve and must be obtained separately.
SWEAT COPPER MODELS
1. Use new, properly reamed pipe, free from dents or corro-
sion.
2. Place the valve on the pipe. Set the manual opening
lever to MAN. OPEN position before applying heat. This
protects the plug inside the valve by removing it from the
seat.
3. IMPORTANT- Take care not to burn the plastic portion of
the composite adapter plate when soldering.
4. Sweat the joints, keeping the outer surface free from sol-
der. DO NOT use silver solder because of the high melt-
ing temperature required.
V4043A,B,E,J; V4044A,B; V8043A,B,E,F,J; V8044A,B,E MOTORIZED VALVES
To Install Replacement Powerhead
SYSTEMS WITH OLD STYLE VALVE BODIES (SERIES 1-5)
To install a replacement powerhead in a system with an old
style body (series 1-5), the valve body must be converted to
accept the new powerhead using part no. 40003918
Conversion Kit. The kit includes a metal plate with a driveshaft
and rubber plug, O-ring, and four screws.
IMPORTANT
Converting the valve body for use with the new pow-
erhead does not require removal of the valve body
from the pipeline. However, it is necessary to drain
the water from the system before beginning the con-
version.
1. Disconnect the power supply before connecting the wir-
ing to prevent electrical shock or equipment damage.
2. Disconnect the leadwires to the powerhead at the termi-
nal block or conduit connection. Remove the conduit or
cable connector if fitted. Label each wire for rewiring
later.
3. Drain the water from the system.
4. Remove the old powerhead from the valve body (Fig. 10)
a. Place the manual opening lever (normally closed
b. Remove the cover (Fig. 10B).
c. With the cover off, remove the four screws securing
d. Lift the powerhead off the valve body (Fig. 10C).
e. Remove the O-ring from the top of the valve body.
5. Install 40003918 Conversion Kit (Fig. 11)
M10162A
a. Insert the new O-ring in the valve body.
b. Place metal plate with the rubber plug on top of the
c. Secure the metal plate to the valve body with the four
6. Install new powerhead (see Fig. 12)
a. Place the manual opening lever (normally closed
b. Fit the powerhead onto the valve body, ensuring that
c. Secure the powerhead to the valve body with the two
d. If fitted, reconnect the conduit or cable. Reconnect
e. Replace the powerhead cover.
7. Turn on power.
9
models only) on the old powerhead in the MAN.
OPEN position (see Fig. 10A).
the powerhead to the valve body.
valve body. Make sure the guide pins on the under-
side of the metal plate fit into the recesses on the
valve body.
screws (two sets) provided. One set of screws has
heads with recessed threads to insert screws for
mounting the new powerhead; insert this set into the
larger screw openings. The other set has domed
heads; insert this set into the smaller screw open-
ings. Each set of screws must be inserted in opposite
corners of the metal plate so the screws sit flat on the
plate. Make sure the guide pins on the plate fit into
the recesses on the valve body.
models only) on the new powerhead in the MAN.
OPEN position.
the shaft seats correctly. The powerhead should be
aligned with the manual opening lever or slot for
lever at the port A end of the valve body.
screws provided.
the leadwires at the powerhead.
60-2133—10
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