Changing to a Honeywell from Randall 4033 24 Hour Mechanical

[clubb699]

Hi lads,

Wondered if someone could give me some assistance here please i currently have

http://www.uk-plumbing.com/danfoss-randall-4033-24-hour-mechanical-programmer-p-1234.html

Wiring diagramme for Randal

http://danfoss-randall.co.uk/PCMPDF/7486.pdf


And i would like to purchase A honeywell like this one.

http://www.plumbnation.co.uk/site/honeywell-st9400c-7-day-two-channel-programmer/ something like that.

I would like to know what actual wires from the randal Timer will be used will it be a straight swap over from the Randal to the new settup or are there any wires not needed due to the digital setup.

Any info would be grately appriciated thanks for your time.

 

[jameshayes]

you have done some homework already with drayton site.

drayton 4033 wiring.
1 ignore.
2 central heating on.
3 central heating off.if no wire here ignore.
4 hot water on.
5 hotwater off.
6 live.
7 neutral.
earth symbol.

honeywell st9400c.
neutral.
live.
1 hot water off.
2 central heating off...see 3 above.
3 hot water on.
4 central heating on.

drayton 2 = honeywell 4
3 = 2 see above note.
4= 3
5= 1
neutral = neutral.
live = live.
earth = earth.

ensure 3amp fuse is fitted to spur or plug and adopt safe working process.

 

[clubb699]

Hi Jameshayes,

Thank you for your detailed post thats great information thanks for your time.