Evening all, well after much searching and interesting reading I have resorted to my first post.
Just to be clear, my plumber is fitting my boiler but I get the impression it has been a little while since he fitted one, so I have a few questions.
The boiler is a grant eco vortex utility standing boiler with a sealed system kit.
We have bought a Honeywell CMT 927 and two motorised valves V4043H.
Now plumber said that room thermostat is in the CMT 927; I get this!
However, I am not clear on whether I need a cylider thermostat; he thinks not? Any thoughts?
Also, the CMT927 appears to be solely for controlling room temperature (central heating on/off time) is this correct? How should I therefore control the switching on and off of the hot water. The wiring diagrams indicate a "programmer" is needed, so do we need something over and above the CMT927 to control when the water comes on......or is it instant because it is now a sealed system?
Thanks
Anthony
Just to be clear, my plumber is fitting my boiler but I get the impression it has been a little while since he fitted one, so I have a few questions.
The boiler is a grant eco vortex utility standing boiler with a sealed system kit.
We have bought a Honeywell CMT 927 and two motorised valves V4043H.
Now plumber said that room thermostat is in the CMT 927; I get this!
However, I am not clear on whether I need a cylider thermostat; he thinks not? Any thoughts?
Also, the CMT927 appears to be solely for controlling room temperature (central heating on/off time) is this correct? How should I therefore control the switching on and off of the hot water. The wiring diagrams indicate a "programmer" is needed, so do we need something over and above the CMT927 to control when the water comes on......or is it instant because it is now a sealed system?
Thanks
Anthony