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Installing - Honeywell 40003916 Powerhead Installation Instructions

Replacement powerhead for the v4043, v4044, v8043, and v8044 fan coil and zone valves
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5. Install 40003918 Conversion Kit (See Fig. 3).
Insert new O-ring in the valve body.
Place metal plate with rubber plug on top of
valve body. Make sure the guide pins on the
underside of metal plate fit into recesses on
valve body.
Secure the metal plate to the valve body with
the 4 screws (2 sets) provided. One set of
screws has heads with recessed threads to
insert screws for mounting powerhead; insert
this set in the larger screw openings. The
other set has domed heads; insert this set in
the smaller screw openings. Each set must
be inserted in the opposite corners of the
metal plate so screws sit flat on the plate.
Make sure the guide pins on the plate fit into
recesses on valve body.
VALVE
BODY
Fig. 3. Install 4003918 conversion kit.
6. Install new powerhead (Fig. 4).
Place the manual opening lever (normally
closed models only) on the new powerhead in
the MAN. OPEN position.
Fit the powerhead onto the valve body, ensur-
ing that the shaft seats correctly. The power-
head should be aligned so that the manual
opening lever or slot for lever is at the port A
end of the valve body.
Secure the powerhead to the valve body with
the 2 screws provided.
HEX-NUT SCREW
WITH DOMED HEADS (2)
HEX-NUT SCREWS
WITH RECESSED
THREADS AND
SHOULDER SHANK (2)
ADAPTER
PLATE
O RING
LOCATING
RECESSES (3)
M10160
A
MANUAL
OPENING
LEVER
Fig. 5. Remove old powerhead from new style valve body.
If fitted, reconnect the conduit or cable.
Reconnect the leadwires.
Replace powerhead cover.
7. Turn on power.
Fig. 4. Install new powerhead.
Systems with new style valve bodies (Series 6)
IMPORTANT
On a new style valve body or a valve body that
has been converted to accept this new power-
head, it is not necessary to drain the system if
the valve body remains in the pipeline.
1. Disconnect power supply before connecting wiring
to prevent electrical shock or equipment damage.
2. Disconnect leadwires to powerhead at terminal
block or conduit connection. Disconnect conduit or
cable connector if fitted. Label each wire for rewir-
ing later.
3. Remove old powerhead (See Fig. 5).
Place the manual opening lever (normally
closed models only) on the old powerhead in
the MAN. OPEN position. (Fig. 5A.)
Remove screw securing the cover to the pow-
erhead. Lift powerhead cover off. (Fig. 5B.)
Remove the 2 screws securing the power-
head to the valve body. (Fig. 4.)
Lift the powerhead off the valve body.
B
3
40003916 POWERHEAD
SECURING
SCREW (2)
REMOVABLE
HEAD
SHAFT
REMOVABLE HEAD
VALVE BODY ASSEMBLY
M10173
COVER
RETAINING
SCREW
M10161
69-0404—02

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