Hive Help - Hive with Potterton Promax 12 SL boiler

[Leesparkykent]

Yes 9.

Connect terminal 3 to 9. From what I can see/make out terminal 1&2 perm live, terminal 3&4 neutral, 6 switch live to boiler and pump, 7 HW on from programmer which is connected to common of the cylinder thermostat, 8 normally closed from cylinder thermostat and 9 is switch live from old room thermostat to brown of the ch valve. If you connect 3 on hive to connector block 9 in wiring centre job should be a goodun

 

[hightower]

I'll try in morning mate, but how come old wiring was connected to terminal7 as in the picture. Terminal7 will only have one wire if I take #3 out and put it in 9

 

[hightower]

ps there's no separate thermostats for heating, it was built in to programmer

 

[Leesparkykent]

I'll try in morning mate, but how come old wiring was connected to terminal7 as in the picture. Terminal7 will only have one wire if I take #3 out and put it in 9

Terminal 8 has the brown of the hot water valve which should be connected to hw on of programmer or switched live of timer depending what you have.

 

[Leesparkykent]

ps there's no separate thermostats for heating, it was built in to programmer

That confirms my thinking mate as the old programmable room thermostat would have had live connected to the permanent live either terminal 1 or 2 and the switch live from programmable room thermostat would be connected to terminal 9 which switches the brown of the CH valve.

 

[hightower]

I'll report back in the morning

 

[hightower]

So after my missus kicking me at 6:30 in a house that was 14 degrees saying "sort that bloody heating out!" I gave it another look. And one saying comes to mind - "I can't see the wood for the trees".

And it was definitely a forest in the wiring centre. Basically I was wiring the #3 terminal of Hive to #7 in the wiring centre. Why? Because I swear that's where the old programmer switch return went to. But on looking again today, Lee, you were absolutely spot on. I'd traced the wires wrong in the 'jungle centre' and had instead removed the black which wasn't the programmer return, but what I can only assume runs off to the boiler somewhere. Anyway, replaced the 'wrong' black, and actually removed the right black from #9 and then put in my new black from Hive #3 and we have heat.

I've since drawn out the wiring centre to paper and if I get time today I'm going to go through it to learn what goes where, but Lee, I owe you a pint mate.

 

[Leesparkykent]

Happy days mate