Number of Zones: | 6 |
---|---|
Application: | Zoning |
Width (Inches): | 11-3/4" |
Height: | 7-1/2" |
Voltage: | 120v |
Depth (Inches): | 3" |
Wiring: | PC Board |
This should work directly with your Tekmar thermostats as long as they are 24V.
you may be able to, not all of Taco's zoning systems are backwards compatible. it would be best to have us or Taco confirm compatibility.
Yes, the transformers are a standard feature and included in all ZVC models.
Yes, this is the right unit for the 4 wire actuators. I had a 12 loop manifold and 6 zones with 6 thermostats. I grouped several loops (actuators) together to work with the 6 zones of the Taco unit. I then connected 6 thermostats. I then wired the end switch to the Tekmar 374 Mix Demand. When a thermostat would call for heat the end switch would close the mix demand as well as the relay for the circulator pump on the manifold loop. The 374 took care of the primary loop to maintain the primary loops reset temperature, the variable speed mixing pump and read the temperature on the secondary loop to adjust the variable speed pump's output. So in short yes this should work however do some homework on the rest of the system for radiant is not simple but not rocket science. Look at the Tekmar product or Taco products for mixing to ensure you are sending the right temperatures through the loops off the secondary manifold.
The Taco 6 Zone control will work with your wirsbo actuators. The yellow wires are your 24 volt feed to the actuator, they go on terminals 1&2 on the selected zone of your choice. The red wires on the actuator are your end switch, they go on terminals 3&4 on the same zone. When there is power to the 6 zone relay the green LED will light. When there is a call for heat from your two wires on the thermostat R&W, the yellow LED will light on that zone. After a short period of time the end switch will make in the actuator, that will make the red LED light to come on the same zone. That will pull in X&X on the control module, those terminals should be wired to the boilers X&X or T&T terminals, depending on the boiler control. Taco has a nice wiring diagram you can follow included. If any zone is calling, that end switch will close and pull in the boiler. It is a set of dry contacts with no power going through them. So one zone can pull in the boiler or all six, it doesn't really matter how many. Now if you are using all 6 zones for wirsbo actuators, do not turn on the priority switch. That is there if you are using the boiler to heat domestic hot water with an external tank. You would wire the zone marked priority to the tank with a Taco zone valve or equal. When the tank calls for heat, like during morning showers it over rides all the other zones so that the boiler gives the tank only its heat to satisfy it. You can wire 3 zones now and 3 zones in the future, the control doesn't care. It is a great control for your job. Good luck
The -EXP control is "expandable," meaning that it can be connected to other -EXP models if you need to add additional zones. It is possible to connect a Radiant Mixing Block to a ZVC.
Both zone valve controls must be EXP models. We would recommend two ZVC404-EXP units.
You would wire the RMB-1 to the boiler as if it were a thermostat. Your boiler control will still control the boiler. The RMB-1, when on, will act as a thermostat would in relation to the boiler.
No, this unit will control six zones which are zoned by 24-volt zone valves that are supplied by a single circulator.
If you are zoning by pump, you should use a switching relay. This control is for systems zoned by zone valves.
Zone Valve Controls with priority allow domestic hot water (i.e. an indirect water heater) to take precedence over other calls to the boiler.