Product Overview

V4043A,B,E,J; V4044A,B; V8043A,B,E,F,J; V8044A,B,E MOTORIZED VALVES
60-2133—9
20
Honeywell Europe S.A.
3 Avenue du Bourget
B-1140 Brussels Belgium
Honeywell Asia Pacific Inc.
Room 3213-3225
Sun Hung Kai Centre
No. 30 Harbour Road
Wanchai
Hong Kong
Home and Building Control
Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 2C9
Honeywell Latin American Division
Miami Lakes Headquarters
14505 Commerce Way Suite 500
Miami Lakes FL 33016
Helping You Control Your World
®
60-2133—9 J.S. Rev. 11-96 Printed in U.S.A.
Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis MN 55408-0524
OPERATION AND CHECKOUT
CAUTION
On 24V systems, never jumper the valve coil
terminals even temporarily. This can burn out the
heat anticipator in the thermostat.
Operation
Automatic Operation
On a call for heat by the zone thermostat, the valve opens
and its auxiliary switch contacts make, closing the circuit to
the system circulator. In a multizone system with all the valve
auxiliary switches wired in parallel, any zone calling for heat
can operate the circulator. When the call for heat ends, the
valve closes by integral spring return. The auxiliary switch
contacts break the circulator circuit.
Manual Operation
The motorized valve can be opened manually by lifting the
manual opening lever over the stop and pushing slowly and
firmly to the MAN. OPEN position. The stop permits the valve
to be locked in the open position. The valve returns to
automatic position when the valve is energized.
Normally Closed Models
With the manual opener set to AUTO and the powerhead
energized, the valve is opened as shown in Fig. 36A. When
the powerhead is de-energized, a spring-return mechanism
drives the valve to the closed position as shown in Fig. 36B.
The valve can also be opened with no electrical power by
moving the manual opening lever over the stop and pushing
slowly and firmly to the MAN. OPEN position. The stop
permits the valve to be locked in the open position. The valve
returns to the automatic position when the valve is
energized.
Auxiliary switch is not energized when the valve is manually
opened.
Normally Open Models
When the powerhead is de-energized, a spring-return
mechanism drives the valve to the open position (Fig. 36A).
When energized, the valve is closed as shown in Fig. 36B.
A reverse-acting thermostat is required to control a normally
B
OUT
OPEN POSITION
A
A
IN
B
OUT
CLOSED POSITION
B
A
IN
M5951
Checkout
쐃 Raise the setpoint on the zone thermostat above the
room temperature to initiate a call for heat.
쐇 Observe all control devices—the valve should open
and the auxiliary switch should make the circuit to the
circulator or other valve at the end of the opening
stroke.
쐋 Lower the setpoint on the zone thermostat below the
room temperature.
쐏 Observe the control devices. The valve should close
and the auxiliary equipment should stop.
Service
This valve should be serviced by a trained, experienced
service technician.
1. If the valve is leaking, drain the system and check to
see if the O-ring needs replacing.
2. If the gear train is damaged, replace the entire
powerhead assembly. See the Installation section. If
the motor is burned out, replace the motor. See
Replacement Parts list in the TRADELINE® Catalog.
NOTE: Honeywell zone valves are designed and tested for
silent operation in properly designed and installed
systems; however, water noises can occur as a result
of excessive water velocity or piping noises can
occur in high temperature (higher than 212°F
(100°C) systems with insufficient water pressure.
Valves are designed for normal cycling operations.
Product life will be shortened if energized
continuously.
open valve.
NOTE: Inlet Port is stamped A and Outlet Port is stamped
B on the valve body.
Fig. 36. V8043 operation for normally closed valve.
Printed on recycled paper containing at
least 10% post-consumer paper fibers.
www.honeywell.com/building/components