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Thermal Actuator, Four-Wire
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MANUALS (3)
Product Highlights
Description
Specs
| Application: | Zoning |
|---|---|
| Voltage: | 24V |
| Operating Range: | 24V +/- 10% VAC |
| End Switch: | Max 2A/24V dry contact |
| Wiring: | Four-Wire |
| Height: | 2" |
| Type: | Thermal |
| Depth (Inches): | 2-1/8" |
| Width (Inches): | 1.625" |
| Weight (lbs): | .30 lbs |
| Max Number of Actuators: | 12 Thermal Actuators (50VA transformer) 19 Thermal Actuators (75VA transformer) 25 Thermal Actuators (100VA transformer) |
| Current Draw Range: | 70mA /2w (brown and blue leads) 3.5VA |
| Used With: | TruFLOW Manifolds |
Questions?
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Product Reviews
Most Liked Positive Review
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Verify manifold style
Most Liked Negative Review
Pretty poor actuator -- they have two major problems
Perfect Replacement
Products came as expressed and delivered promptly.
Would buy again
Easy installation
Great Product
Good alternative
It Works! but watch that you power up device before trying
The actuators are good but the adaptor rings are hard to fit
I did buy this product 3 times and its great
I would buy again
Product Q&A
23 QuestionsQ: will these work with Rifeng manifolds
Asked by steve 13 years ago
Add your answer
Verified Reply- PexSupply StaffThese actuators are not compatible with Rifeng manifolds. Rifeng manifolds only work with MA-ACT (two-wire) and MP700 (four-wire) actuators.
No- they will not fit-
Q: Will these actuators fit on non-truflo manifolds?
Asked by Jim 14 years ago
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Verified Reply- PexSupply StaffThese actuators fit TruFLOW and TruFLOW Jr. manifolds without an adapter. They also fit Uponor's EP heating manifolds if you use a part A2671300 adapter.
will only fit wrisbo/uponor old style manifold and newer truflow manifold with adapter
no. there is a special size and shape the actuator fits into.
Q: What is the length of the wire lead on the four wire thermal actuator? It looks to be around 3 feet long, but it is hard to tell.
Asked by Mr. Pex 14 years ago
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Verified Reply- PexSupply StaffThe wire measures about 40 inches long.
If I remember correctly it may be 3 feet. The ones I bought are in a customers house so I can't go look at them but I believe you are correct at about 3 feet. I had wrapped the wire and put a tie on it because I wasn't comfortable cutting it to fit. You never know if you might need the extra wire. If the wire is to short you could always use small wire nuts and extend the wire a bit. Dave
Greetings, I already cut the wires to length when I installed the thermal actuator; I estimate the length of the leads to be around 2 feet in length. Hope this info helps-Brian
Q: How does this work? When the room demands heat, does the actuator open the valve on the manifold to let water circulate and warm up the room?
Asked by Bob 14 years ago
Add your answer
Verified Reply- PexSupply StaffThat is precisely how this loop actuator works. It is more or less the same as a normally-closed zone valve, but it mounts directly to an Uponor manifold in order to allow a single manifold to include multiple zones. Four-wire actuators differ from two-wire actuators in that they have an end-switch which ensures that the circulator does not turn on until the valve opens completely. A3020416 is the two-wire (no end switch) version of this actuator.
Q: Pertaining to installing upside down: Is it not recommended ONLY because of possible water damage in the event of a water leak? Will it work properly upside down?
Asked by Mark 14 years ago
Add your answer
Verified Reply- PexSupply StaffThe actuators will work upside down, but such installations are strongly advised against by the manufacturer and may violate code in certain locations.
Verified Reply- Another PexSupply CustomerI am not an expert but considering that the valve is opened by expanding hot wax and not a mechanical function I don't see any reason why you couldn't install at any position. Steve
Yup, Just went down to the basement to check mine......
These have been working great for me but, unfortunately, I have no experience with using them upside down. All 4 of mine are installed right-side up. Sorry! Thanks for asking. Regards, Bob
Q: Can you use a 4 wire Actuator to replace a 2 wire actuator if so how is it wired
Asked by 14 years ago
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Verified Reply- PexSupply StaffYou should be able to, as long as the control board into which you wire the actuator can accept four wires. The second two wires serve as an end switch, ensuring that the circulator pump does not come until until the valve has fully opened.
Q: Does the Thermal Actuator work on the EP Manifolds?
Asked by 14 years ago
Add your answer
Verified Reply- PexSupply StaffIt does, but an extra adapter is needed to connect the actuator to the manifold. The adapter is part A2671300.
Q: I have a system (installed in 1995) with three old style wirsbo brass screw on type thermal telestats. On my wirsbo control module board the red led light will not light up for one the telestats when the themostat calls for heat, but the other two telestats work. Does that mean that a telestat is bad? If I need to repalce all the telestats should I use the MVA's or these thermal acuators and will the screw on adaptor for these actuators fit my system?
Asked by 15 years ago
Add your answer
Verified Reply- PexSupply StaffIt sounds to us like your telestat is bad. The style you mention is no longer made. We are not sure whether one of the newer telestats will even fit that manifold. You may have to replace the whole manifold.
It's probably too late for your question, but this might help someone in the future. I don't have any control module board, so I'm not sure about the light issue. I do know that just by looking at the old type acutators, if they're tilted off to one side or the other, they're probably bad. You can confirm that by unscrewing them and seeing if the plastic parts are all inone piece. I've replaced about 4 or 5 of these on my 10 year old system and the new ones are far superior and fit with no special adaptor needed. The wireing is fairly easy to figure out just by using the old wireing as a color guide. The directions that come with the new units are somewhat cryptic. The only thing I can say is that you have to take a few minutes for a new actuator to "cycle" through an open and closed position. I just turned the thermostat up high for a few minutes and then turned it down low for a few minutes. That seemed to do the trick!
Q: Should the actuator be installed on the supply side or return side?
Asked by Dan the newbie 15 years ago
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Verified Reply- PexSupply StaffIt should be installed on the return side.
Q: my system was installed 5 yrs ago. i'm having problems with one of the zones. my boiler turns on when thermostat asks for heat but the top of the actuator(3010522)never rises. do i need to replace the entire actuator or can i just replace the cap?
Asked by alan 16 years ago
Add your answer
Verified Reply- PexSupply StaffUnfortunately, there are no replacement parts for the A3010522. The whole unit would need to be replaced.