40003916 Installation Instructions

40003916 REPLACEMENT POWERHEAD
3 95C-10665—05
OPERATION
When there is a call for heat from the room thermostat or
other controller, the motor drives the valve open allowing
water to flow through the valve.
When fully open position is reached, the motor stalls and
keeps the valve open. This situation exists until the controller
stops “calling for heat”, at which point a spring connected to
the gear train drives the valve to the closed position.
CHECKOUT
Inspect the head installation and the valve body assembly to
ensure that all connections have been correctly made. Set the
room temperature (or other controller) so that the valve in
energised, then change the control setting so that it is de-
energised. Observe that the motorised valve runs smoothly
from closed to open to closed again.
Whilst Honeywell takes all practicable steps to design and
manufacture its products to comply with the requirements of
the Heath and Safety at Work Act 1974, all products must be
properly used and Purchasers are reminded that their
obligations under the Act are to ensure that the installation
and operation of such products at a place of work should be
safe and without risk to them.
Honeywell reserves the right at any time and without notice to
change any product or information contained in this
publication.
The wiring diagrams and installation instructions in this
publication are provided for guidance purposes when
installing recognised standard systems only. Any application
of this product not shown here, or any deviation from these
instructions, is neither recommended nor advised. Any such
application or deviation should be referred to Honeywell for
technical assistance.