Replacement Part Install Instructions

INSTALLATION INSTRUCTIONS
69-0404-04
40003916 Powerhead
APPLICATION
The 40003916 is a replacement powerhead for the
V4043, V4044, V8043, and V8044 fan coil and zone
valves. See Table 1. The powerhead includes the
motor, housing, and 2 mounting screws. Models are
available for low or line voltage applications.
This powerhead is for use with new style valve bodies
(series 6) or old style valve bodies (series 1-5) that
have been converted to accept this powerhead. The
new style valve bodies are identified with a sideways 6
on the powerhead after the OS number and an indent
under the OS number on the powerhead. See Fig.1. If
using an old style valve, the valve must be converted
using Part No. 40003918 (order separately).
Fig. 1. Sideways number after OS number on
powerhead identifies valve series.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to fol-
low 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 suit-
able 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
Disconnect power supply before connecting
wiring to prevent electrical shock or
equipment damage.
SYSTEMS WITH OLD STYLE VALVE BODIES
(SERIES 1-5)
To install this powerhead in a system with an old style
valve body (series 1-5), the valve body must be
converted to accept 40003916 Powerhead using Part
No. 40003918 Conversion Kit. The kit includes a
metal plate with driveshaft and rubber plug, O-ring,
and 4 screws.
IMPORTANT
Converting the valve body for use with the
new powerhead does not require removal of
the valve body from the pipeline. It is, however,
necessary to drain the water from the system
before beginning the conversion.
1. Disconnect power supply before connecting
wiring to prevent electrical shock or equipment
damage.
2. Disconnect the leadwires to the powerhead at
terminal block or conduit connection. Remove
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.
(See Fig. 2.)
— Place the manual opening lever (normally
closed models only) on the old powerhead
in the MAN. OPEN position. (Fig. 2A.)
— Remove the cover. (Fig. 2B.)
— With the cover off, remove the 4 screws
securing the powerhead to the valve body.
— Lift the powerhead off the valve body. (Fig.
2C.)
— Remove the O-ring from the top of the
valve body.
A
COVER
RETAINING
SCREW
M16861
B
V8043F
1
036
24V 50/60 CY
.32 AMP @
6
0 C
Y
6
OS AND SERIES NUMBER