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MANUALS (2)
Product Highlights
Description
Note: The Blue and Brown wires in this product are non-polarized and therefore interchangeable. This means either wire can be connected to live or neutral terminals without affecting functionality or safety.
This product is compatible with Rifeng Manifolds.
Normally Closed Thermal Actuator for Bluefin Manifolds
Specs
| Application: | Zoning |
|---|---|
| Type: | Thermal |
| Used With: | Bluefin Manifolds |
| Wiring: | Two-Wire |
| Product Type: | Actuator |
| Position: | Normally Closed |
| Material: | Plastic |
| Max Pressure (PSI): | 200 |
| Warranty: | 5 Year |
| Standards Met: | ASTM F877 NSF ASTM F1960 |
| Max Temp (F): | 200°F |
| Manifold Compatibility: | Bluefin Manifold |
Contact
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Product Reviews
I would buy this again
Works well after understanding operation
Zone valve actuators
Lot of failures
Failure Rate is High
Really Can't Say
Get a 4 wire instead...
Product Q&A
13 QuestionsQ: Looking at the reviews there seems to be a quality issue? Has the product been fixed?
Asked by Newguy 11 years ago
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Verified Reply- Supplyhouse StaffI am not sure, but the MR Pex. actuators will work if you use an adapter ring.
Q: will the rifeng thermal actuator work with a taco zone control box ?
Asked by big dog 12 years ago
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Verified Reply- SupplyHouse StaffYes, it will.
Q: Could I wire two-tree actuators for single zone thermostat/controller? I cannot use zone valve, because I want to use 6 loop manifold for two zone, where each will have own thermostat.
Asked by vlad 12 years ago
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Just parallel up each actuator ( Common + Hot>> or "c" + "w" ) for each loop you want controlled by the same thermostat. This way when zone 1 calls it heats up actuators say 1-3 or whatever loops on the manifold you want active at the same time. Don't forget the current draw for multiple actuators may over load some thermostats and may need a dry contact relay. Or use a Taco or Argo zone relay panel with 6 zone capacity, then jump the TT connections
No problem, these actuators are very low current draw. They will typically draw only 0.08 amps at 24 volts (2 watts),per actuator. The total number of actuators that may be used with a zone control will depend on the transformer VA rating of the zone control you are using. Add up the total amps of all actuators on your manifold and multiply this by 24 volts to get the VA of connected load for the actuators. If your total VA does not exceed 80% of the VA rating of the transformer for the zone control, you should have no problem using several actuators per thermostat for your control. The valve actuator you reference appears to be a two wire actuator so be certain that the zone control will allow for a time delay on actuator opening before turning on the boiler or pump. In some instances it can take several minutes for the valves to open and if a low mass boiler is firing it needs to circulate as soon as the burner comes on or overheating may occur. The alternate is an actuator with four wires two of which are for an "end switch" that completes the boiler ignition control circuit only once a valve is open and closes the "end switch".
Q: Can the MA-ACT be installed upside down?
Asked by nyin 13 years ago
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Verified Reply- PexSupply StaffThe actuator would function in an upside down position, but we would not recommend this orientation because it can be unsafe to install electrical devices below water.
Yes, this operator may be installed in any position depending on how your manifold is set. Be wary of any fluid leaks as it is not fluid tolerant (you do want to keep them dry), so if you are making any repairs above these controls it may be best to remove them from the manifold and tie them out of the way if performing service or flushing or purging from a manifold at a higher elevation.
Yes, you can flip the supply and return up or down, inlet left or right. They are set up for the pex feeding down, but in a basement you are feeding up. The emblem will be upside down Sent from my iPhone
Q: I have an extra spot on my manifold for future expansion in a bonus room- what would I need besides this to put the bonus room on an individual thermostat?
Asked by MD 14 years ago
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Verified Reply- PexSupply StaffYou would need an actuator for each loop on the manifold, a thermostat for each zone, and a zone control.
Q: What is the best way to control these actuators? Which unit would be compatible with a 7 zone,3ea. radiant loops,3ea. 8' wall mounted hydronic baseboard coils and 1 separte loop for a bath room wall mounted fan coil?
Asked by chester 14 years ago
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Verified Reply- PexSupply StaffWe would recommend a Taco zone valve control.
I checked on the Reifeng actuators. I see two wire 24 volt thermal actuators if this is what you are looking at. I guess, first might be a question; are all your zone circuits "home run" to the same manifold? If so, you will use three actuators for each zone all wired in parallel. Because these are two wire controls and have no "end switch" to tell the boiler and pump to turn on, they will need to be activated via a zone control box that receives the thermostat signal and then actuates relays to energize the actuators pump and boiler. I might suggest you check on the TACO ZVC 406 zone valve control. The manual and spec sheet provide instructions for two wire and four wire zone valve connections as well as expanding the control for up to 20 zones. Since you have 7 zones perhaps a 4 zone and a 3 zone control will fill your needs. Current draw on the actuators is very low but it is best to check their data (not listed on this website) to see that the total VA load on the control transformer is not exceeded since they will be wired in parallel. 7 zones at 3 actuators each is 21 actuators. The TACO zone valve control boxes for 3 and 4 zones are 40 VA each. 5 and 6 zone boxes are 80 VA each. The big question is what is the VA rating for the Reifeng actuators???? can any one answer this questions?
Taco 24 volt zone control. Depending on how many zones, you can order a Taco zone control box for as many zones as you need. As far as I know, you could install up to 3 actuators to one taco zone circuit. You could use either hydronic either/or radiant with the same Taco zone control box.
Mr. PEX actuators work great for single loop zones. For multiple loop zones, use Taco zone valves http://www.pexsupply.com/Taco-570-Zone-Valves-325000 or better yet, use a separate circulator for each zone. In my own house for radiant heat I have a mix of zone valves for the smaller multiple loop zones, separate circulators for the larger multiple loop zones, and then Mr. PEX actuators for the single loop zones that are fed from a Rifeng 7 loop manifold. I’m using the Uponor thermostats to control the zone valves and the Mr PEX actuators. They work GREAT!
Chester, Your actuators can easily be controlled with 1) Argo AZ-3 zone valve controller and 1) Argo AZ-5. Use the first for the 3 radiant zones, and the second for the four high temperature zones. Do you understand that you have described a 2 temperature system that will require some sort of temperature step-down for the radiant zones? best wishes, Randy the Hydronics Guy
Q: what is the benefit of a 4 wire over a 2 wire thermal actuator? what extra wiring will i need to do with a 2 wire actuator for it to function properly ?
Asked by 14 years ago
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Verified Reply- PexSupply StaffFour-wire actuators have an end switch, which ensures that the circulator will not come on until the zone valve opens fully. Wiring is the same with either type of actuator. You'd just have more wires to connect to your control if you use a four-wire actuator.
Q: How is this mounted to the individual zone fitting on the manifold? You have to remove the supplied manual valve?
Asked by wealthyhobby 14 years ago
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Verified Reply- PexSupply StaffYou need to remove the white on/off caps atop the return manifold and replace them with the actuators.
Q: Does this unit work with the Rifeng RHM03-50PK manifold?
Asked by 15 years ago
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Verified Reply- PexSupply StaffYes, this actuator works with all Rifeng manifolds.
Q: ac or dc on the voltage
Asked by 15 years ago
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Verified Reply- PexSupply StaffThe unit is AC.