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V8043 ZONE VALVES WITH PRESS CONNECTION
R
THERMOSTAT
TH
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
1
OVERLOAD PROTECTION AS REQUIRED.
Fig. 6. Typical wiring for V8043F.
OPERATION AND
CHECKOUT
CAUTION
On 24 V systems, never jumper the valve coil
terminals even temporarily. This may burn
out the heat anticipator in the thermostat.
NORMALLY CLOSED MODELS
With the manual opener set to AUTO and the
powerhead energized, the valve is opened as shown in
Fig. 7 (left). When the powerhead is de-energized, a
spring-return mechanism drives the valve to the
closed position as shown in Fig. 7 (right). 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 will return to the automatic
position when the valve is energized.
Auxiliary switch is not energized when the valve is
manually opened.
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
www.resideo.com
33-00402EF—09 SA Rev. 07-23
© 2023 Resideo Technologies, Inc. All rights reserved.
The Honeywell Home trademark is used under license from Honeywell International, Inc. This product is manufactured by Resideo Technologies, Inc. and its affiliates.
Tous droits réservés. La marque de commerce Honeywell Home est utilisée avec l'autorisation d'Honeywell International, Inc.
Ce produit est fabriqué par Resideo Technologies, Inc. et ses sociétés affiliées.
TO CIRCULATOR
OR ANOTHER
VALVE
END SWITCH
TR
TH
TR
1
24V
TRANSFORMER
A
IN
OPEN POSITION
NOTE: Inlet port is stamped 'A', outlet Port
is stamped 'B' on the valve body.
L1
Fig. 7. V8043 Operation for N.C. Valve.
(HOT)
L2
Checkout
1. Raise the setpoint on the zone thermostat
above the room temperature to initiate a call for
heat.
2. Observe all control devices—the valve should
open and the auxiliary switch should make the
M5952B
circuit to the circulator or other valve at the end
of the opening stroke.
3. Lower the setpoint on the zone thermostat
below the room temperature.
4. 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.
NOTE: Resideo zone valves are designed and tested
for silent operation in properly designed and
installed systems. However, water noises may
occur as a result of excessive water velocity
or piping noises may occur in high
temperature (over 212 °F [100 °C]) systems
with insufficient water pressure.
NOTE: These hydronic valves are not suitable for
use in open loop systems where there is air
exposure.
B
A
OUT
IN
CLOSED POSITION
B
OUT
M16955
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