Honeywell V4043 User Manual

INSTALLATION INSTRUCTIONS
Place Bar Code Here
95-6983-11
V4043, V4044 Valves;
V8043, V8044 Zone Valves
APPLICATION
These valves consist of an actuator motor and valve
assembly for controlling the flow of hot and/or cold water.
The V4043 and V8043 provide two-position, straight-
through control of supply water. The V4044 and V8044
provide two-position, diverting control of supply water.
The valves are designed for use with fan coil and other
units requiring quiet, compact water valves. The V8043E
and F also control supply water for baseboard radiators
and convectors. The V4043E and V8043J provide
straight-through control of steam only. Models are
available with 125 or 300 psi operating pressure.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable 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
1. Disconnect power supply before connecting
wiring to prevent electrical shock of equip-
ment damage.
2. Normally it is not necessary to remove the
powerhead from the valve body during instal-
lation. If the valve must be disassembled, be
certain that it is reassembled with the water
flow in the direction of the arrow. Reversal of
the powerhead will result in damage to the
gear train.
3. On 24V systems, never jumper the valve coil
terminals even temporarily. This may burn
out the heat anticipator in the thermostat.
IMPORTANT
Use this valve in hydronic heating systems
which do not contain dissolved oxygen in the
system water. The dissolved oxygen, which is
found in systems that have a frequent source of
makeup water, causes the rubber plug inside
the valve to deteriorate and eventually fail.
LOCATION
Install the valve in an area with adequate clearance to:
— Move the manual opening lever on the side of the
powerhead.
— Remove the powerhead cover.
— Wire the powerhead.
— Replace the powerhead motor.
The valve location should be in an area where the
temperature does not exceed the maximum valve
operating temperature as shown in Fig. 1. The maximum
valve operating temperature depends on the maximum
ambient temperature at the valve location and the
maximum fluid temperature. Using the graph in Fig. 1,
the maximum valve operating temperature can be found
as follows:
1. Measure ambient temperature at valve and locate
this temperature on the ambient temperature scale
on the graph.
2. Draw a line from this ambient temperature, parallel
with the fluid temperature scale, to the maximum
fluid temperature line.
3. Draw a line from this point down to the fluid temp-
erature scale to find maximum operating tempera-
ture. (Note the example, shown by the dashed line
in Fig. 1).

Honeywell V4043 Specifications

General

Body Material	Brass
Maximum Pressure	125 psi
Frequency	60 Hz
Operating Pressure	125 psi
Maximum Operating Pressure	125 psi
Actuator Material	Plastic
End Connection Type	NPT
Voltage	24 VAC
Size	3/4 in., 1 in., 1-1/4 in.
Connection Size	3/4", 1", 1-1/4"

Summary

APPLICATION

Valve Overview and Application

Describes valve assembly function, control types, and unit compatibility.

INSTALLATION

General Installation Precautions

Read instructions, check ratings, installer qualifications, and post-installation checks.

Safety Warnings and Important Notes

Electrical shock prevention, water quality, and general cautions.

Installation Steps and Location Guidance

Flow direction, 24V wiring, and valve placement based on temperature.

MOUNTING

Mounting Orientation and Valve Body

Details vertical/horizontal mounting, clearance, flow direction, and port identification.

Flare Fitting Installation

Pipe preparation and fitting details for flare connections.

Sweat Copper Fitting Installation

Pipe prep, manual lever use, and soldering precautions for sweat fittings.

POWERHEAD REPLACEMENT (OLD STYLE BODIES)

Conversion Kit for Old Style Bodies

Explains kit use, prerequisites, and installation for old valve bodies.

Removing Old Powerhead (Series 1-5)

Step-by-step guide to safely remove the existing powerhead.

Installing Conversion Kit Components

Instructions for fitting O-ring, metal plate, and securing screws.

INSTALLING NEW POWERHEAD (OLD STYLE BODIES)

Securing and Wiring New Powerhead

Aligning, securing, and reconnecting wiring for the new powerhead.

POWERHEAD REPLACEMENT (NEW STYLE BODIES)

Removing Old Powerhead (Series 6)

Procedure to remove the old powerhead from new style valve bodies.

INSTALLING NEW POWERHEAD (NEW STYLE BODIES)

Securing and Wiring New Powerhead

Steps for fitting, aligning, securing, and wiring the new powerhead.

WIRING DIAGRAMS AND GUIDELINES

General Wiring Precautions

Safety, power disconnection, local code compliance, and pre-wiring checks.

Typical Wiring for V8043E, V8044E, V8043F

Wiring configurations for specific Honeywell valve models.

Zone Hookups and System Wiring

Wiring diagrams for thermostats, aquastats, and multi-zone systems.

Multi-Zone System Wiring Examples

Diagrams for typical 4-zone and 5-zone systems with transformers.

Replacing Taco Valves with Honeywell Valves

Guides for wiring Honeywell valves to existing Taco systems.

Replacing Dole and Flair Valves with Honeywell

Wiring instructions for Honeywell valves replacing Dole and Flair systems.

Replacing White-Rodgers Valves with Honeywell

Wiring guides for Honeywell valves replacing White-Rodgers systems.