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What are the primary features and benefits of the HONEYWELL V8043D motorized zone valve?
The HONEYWELL V8043D offers several features designed for dependable operation and ease of service:
Quiet and dependable operation is provided by a motor-operated powerhead and swing-type ball valve.
A unique rotating ball plug seats on a different part of its surface on each closing to ensure longevity.
The valve closes against the flow of water to assure quiet operation.
A manual opener moves the ball away from the seat, allowing the valve to be installed without disassembly.
The unit supports manual operation in the event of a power failure.
Easy servicing is possible because the entire powerhead assembly can be replaced without removing the valve body from the line.
Low power requirements allow up to four valves to be operated from a single 40 VA transformer.
Compact construction permits the valve to fit under the cover of most baseboards.
What are the dimensions for the various components of the HONEYWELL V8043D?
According to the PDF, the dimensions for the HONEYWELL V8043D in millimeters (with inches in brackets) are as follows:
| MODELS | A | B | C | D | F | G | H |
|---|---|---|---|---|---|---|---|
| HONEYWELL V8043D | 60 (2 3/8) | 79 (3 1/8) | 22 (7/8) | 19 (3/4) | 98 (3 7/8) | 87 (3 7/16) | 16 (5/8) |
Additional dimensions for Sweat models:
| SWEAT MODEL | K | L |
|---|---|---|
| 5/8 inch I.D. (For 1/2 inch copper tubing) | 79 (3 1/8) | 40 (1 9/16) |
| 7/8 inch I.D. (For 3/4 inch copper tubing) | 89 (3 1/2) | 44 (1 3/4) |
| 1 1/8 inch I.D. (For 1 inch copper tubing) | 98 (3 7/8) | 49 (1 15/16) |
Additional dimensions for Flare models:
| FLARE MODELS | M | N |
|---|---|---|
| 3/8 inch NPT only | 117 (4 5/8) | 59 (2 5/16) |
What are the power requirements and timing specifications for the HONEYWELL V8043D?
The HONEYWELL V8043D operates on 24 V, 50/60 Hz (cycles) with a 6 W nominal power requirement.
The timing for the valve is 15 seconds to open and 4 to 5 seconds to close.
What mounting positions are recommended for the HONEYWELL V8043D?
The HONEYWELL V8043D valve may be mounted in any position on a vertical line.
On a horizontal line, the valve must be mounted so that the powerhead is even with or above the center line of the piping. It is important to ensure that enough room is provided above the powerhead to remove the cover for servicing.
How should the HONEYWELL V8043D be installed in a piping system?
Mount the HONEYWELL V8043D valve directly in the pipe or tube. It must be installed so that the arrow stamped on the side of the valve body corresponds to the flow direction.
For flare-fitting models, the body is threaded for standard 3/8 inch I.D. copper, 45 degree SAE flare-fitting nuts. These nuts are not furnished with the valve.
For sweat copper fittings, ensure that good solder connections are made. Do not use silver solder because of the high melting temperature it requires.
For normally closed models with sweat fittings, set the opener lever to “MAN. OPEN” before applying heat to the fittings. This protects the plug inside the valve by removing it from the seat. After installation, place the manual opener in the “AUTO” position.
What are the three manual operation settings for the HONEYWELL V8043D actuator?
The HONEYWELL V8043D actuator has three different manual settings:
AUTO mode: In this mode, the valve cycles with the thermostat and activates the auxiliary switch when the valve is at the full open position.
OPEN mode: This mode allows the valve to be opened so the system can be filled, flushed, or drained. The auxiliary switch is not activated in this mode. The valve returns to AUTO mode once it is energized.
SWITCH mode: Available on 300 psi models only, the valve is opened and the auxiliary switch is activated to run the pump. The valve returns to AUTO mode when it is energized.
How do Normally Closed models of the HONEYWELL V8043D operate?
With the manual opener set to AUTO and the powerhead energized, the HONEYWELL V8043D valve is opened. When the powerhead is de-energized, a spring return mechanism drives the valve to the closed position.
The valve can also be opened without electrical power by moving the manual opener lever over the stop and pushing slowly and firmly to the “MAN. OPEN” position. The valve will return to the automatic position once it is energized. Note that the auxiliary switch is not energized when the valve is manually opened.
How do Normally Open models of the HONEYWELL V8043D operate?
When the powerhead of a normally open HONEYWELL V8043D is de-energized, a spring return mechanism drives the valve to the open position. When energized, the valve is closed. A reverse acting thermostat is required to control a normally open valve.
What are the close-off water pressures and capacity (Cv) ratings for the HONEYWELL V8043D?
The close-off water pressure ratings for all models of the HONEYWELL V8043D are:
50 psi for 1.0 Cv
20 psi for 3.5 Cv (Standard Rating)
8 psi for 8.0 Cv
What are the safety precautions regarding the wiring of the HONEYWELL V8043D?
When wiring the HONEYWELL V8043D, observe the following safety instructions from the PDF:
Disconnect the power supply before connecting wiring to prevent electrical shock and equipment damage.
Never jumper the supply wires or actuator terminals, even temporarily, as this may damage the thermostat.
All wiring must conform to local electrical codes and ordinances.
What replacement powerheads are available for the 125 psi HONEYWELL V8043D models?
The specific replacement powerhead for the 125 psi HONEYWELL V8043D model is Part Number (P/N) 40003916-014.
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