Central Heating programmer/timer upgrade

[tomengo]

Hi all, I am going to attempt to upgrade the programmer for my central heating (old MK1 SUNVIC with analogue clock) to a digital one bought from Trav.Prkns. The old SUNVIC has 19 wires going in and the new IFLO has 7. I will buy a connecting plate to sort this. Can someone please tell me which wires go where? Many Thanks.

 

[luminaire]

Will this be of any help to you?

 

[tomengo]

Hi, thanks for your quick response. Unfortunately, the link you sent me failed and locked up my web browser. I think the honeywell site has been updated and so im no longer able to access that page.

http://content.honeywell.com/uk/homes/systems

 

[RICelectric]

Hi, thanks for your quick response. Unfortunately, the link you sent me failed and locked up my web browser. I think the honeywell site has been updated and so im no longer able to access that page.

http://content.honeywell.com/uk/homes/systems

works for me!

C Plan
Suitable for new and existing installations with pumped heating and gravity hot water circuits.

C Plan Schematic

C Plan Wiring

The Honeywell items used in the installation of this plan will be:

1 - T6360B1028 Room Thermostat
1 - L641A1039 Cylinder Thermostat
1 - V4043H1106 28mm Zone Valve

*Optionallly

1 - 10 Way junction Box - 42002116-001 or
1 - Wiring Centre - 42005748-001
1 - Programmer - ST6400C1003



S Plan

Suitable for fully pumped installations with two primary circuits, usually one for heating and one for domestic hot water.

S Plan Schematic

S Plan Wiring

The Honeywell items used in the installation of this plan will be:

1 - T6360B1028 Room Thermostat
1 - L641A1039 Cylinder Thermostat
2 - V4043H1056 22mm Zone Valve

*Optionallly

1 - 10 Way junction Box -42002116-001 or
1 - Wiring Centre - 42005748-001
1 - Programmer - ST6400C1003

S Plan Plus

Similar to the Sundial S Plan but for use with 3 or more primary circuits, generally two heating zones and one for domestic hot water, Heating zones can be controlled by a combination of time controls and thermostats or by programmable thermostats.

S Plan Plus Schematic

S Plan Plus Wiring

This is the tham diagram as for the standard S Plan but with additional heating zones as required.

The Honeywell items used in the installation of this plan will be:

2 - T6360B1028 Room Thermostat
1 - L641A1039 Cylinder Thermostat
3 - V4043H1056 22mm Zone Valve

Note: The number of room thermostats and zone valves will be dependent upon the number of heating zones.

*Optionallly

1 - 10 Way junction Box -42002116-001
1 - Programmer - ST6400C1003

Note: The number of junction boxes and programmers will be dependent upon the number of heating zones.

W Plan

Suitable for fully pumped installations wher it is acceptable to heat only one circuit at a time and normally installed to give priority service to the domestic hot water circuit.

W Plan Schematic

W Plan Wiring

The Honeywell items used in the installation of this plan will be:

1 - T6360B1028 Room Thermostat
1 - L641A1039 Cylinder Thermostat
1 - V404C1288 22mm Diverter Valve

*Optionallly

1 - 10 Way junction Box -42002116-001
1 - Programmer - ST6200A1009

Y Plan

Similar to the W Plan but with the ability to supply both heating and hot water circuits at the same time, if required.

Y plan Schematic

Y Plan Wiring

The Honeywell items used in the installation of this plan will be:

1 - T6360B1028 Room Thermostat
1 - L641A1039 Cylinder Thermostat
1 - V4073A1039 22mm Mid position Valve

*Optionallly

1 - 10 Way junction Box - 42002116-001 or
1 - Wiring Centre - 42005748-001
1 - Programmer - ST6400C1003

 

[tomengo]

Hi. thank you for sending the contents of the web page, I used firefox browser & for some reason it didn't like the link, but internet explorer was fine

I could use a little more help as to which plan to follow as a few of them seems compatible to me. Im not sure if I have gravity hot water, but I do have a gravity fed cold water tank in the attic.

There are many wires coming from the old SUNVIC, I've tried to identify where they are from to help choose which plan schematic to follow.

http://www.flickr.com/photos/tomengo/1330610346/

Any more tips or suggestions would be gratefully received!

 

[gas4you]

That is a Y plan in your photo.

There was no need to duplicate post in plumbing section then as you have already had good answers.

 

[tomengo]

hi, today I bought a 10 way junction box. I was getting to grips with the Y plan schematic, (building up confidence) but soon realised that there are a few things that don't add up (in my mind)

I noted all the wires on a piece of paper and compared them next to the honeywell Y-plan.
First, the valve at home has 4 wires (brown, grey, orange, blue) where the Y-diagram has 5 wires (?) that makes me unsure as to which wire to screw into which number (1-10)

Second, The cylinder stat also has 4 wires (blue, yellow, white, grn/yell) where the Y diagram shows the cyinder stat with 3 wires (clearly not colour marked) Just 1, 2 & c [?]

My old SUNVIC programmer again: http://www.flickr.com/photos/tomengo/1330610346/


Last, I have a brown wire called 'permanent ' I'm thinking that's the 230v power-in. I have a neutral from the 230v too, but no earth...is that a problem?

Sorry to be such a noob. Im very grateful for any help.