Polyplumb UFH 4 wire actuator heads

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Surrey
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I've just moved into a house, had a new boiler fitted, but the plumber hasn't wired up the UFH. This system has been superseded by a control centre and 2 wire actuator heads.
Can anyone tell me please how to wire the heads (2 greens, blue n brown).
 
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Soooooooooooooo. I had an intergas boiler fitted on 20 Nov................I hate the thing, should have had a wooster!...............spent 5 days telling their technical lot there's 0 volts at x3, n they've spent 5 days sayin that my Fluke T6 must be wrong.
The UFH has been superseded (wiring module n 2 wire actuators), so I have at last solved my problem, I have wedged the 2 port valve open, removed the actuator heads and got the pump running off a plug, so after 5 days n a freezin cold house............I feel EPIC !!
 
So why were you having a "technical discussion " with intergas about the fan connection on x3 ?
 
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X3 is supposed to supply 230v, the Honeywell T4 prog roomstat should be switching this, therefore I can use that to supply switched 230v to the roomstat n control the 2 port valve n pump.
 
I could be wrong but every intergas boiler I have worked on has x3 as the 24v fan connection.
 
I could be wrong but every intergas boiler I have worked on has x3 as the 24v fan connection.
X3 on the X range is the Roomstat 230v connection. Yes, using the same notation for different connections on different boilers is stupid. Yes, they've been told this. No, they won't listen.
 
Soooooooooooooo. I had an intergas boiler fitted on 20 Nov................I hate the thing, should have had a wooster!...............spent 5 days telling their technical lot there's 0 volts at x3, n they've spent 5 days sayin that my Fluke T6 must be wrong.
The UFH has been superseded (wiring module n 2 wire actuators), so I have at last solved my problem, I have wedged the 2 port valve open, removed the actuator heads and got the pump running off a plug, so after 5 days n a freezin cold house............I feel EPIC !!
A Worshitter can't do half the things your Intergas can do. Why don't you tell us what your actual problem is, and post some actual photos, rather than just going off on random unintelligible tangents?
 
Probably got the programmer set to off but expecting voltage at the stat terminals.
 
X3 has 3 terminals, the technical lot are saying pins 1 and 2 are 230 to the progrmmer n switchline return.............BUT pins 1 and 2 measure 0v n pin 3 measures 230 volts. I want to use the 230v switchline to power the roomstat n 2 port UFH valve and pump but can't due to no voltage
 
Do you have the programmer set to on for central heating ?
 
It's an Exclusive 36, yes, I am measuring the voltage at pins 1 n 2 n across to earth and neutral(therefore bypassing the T4 prog stat) and getting 0 volts...............I wonder what the point of X3 pin 3 is for?
 
Another question, the boiler is fitted in the garage that is integral with the house, I guess that the boiler has it's own frost stat, but should I be wiring in another one?
 
Internal frost stat is there to prevent the boiler freezing, it won't necessarily prevent your pipework freezing
 
If the pipes are lagged (grey foam type) I presume that they are better protected than the boiler..............or am I wrong?
 

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