CHANNELPLUS H47 XL 4 Zone timer

eiei0

Hi all

Anyone have any experience with this type of controller

CHANNELPLUS H47 XL


I have zoned heating with 4 zones and another pump for hot water.

I can combine 2 of the zones and use zone 4 for the water.

It looks very tricky to wire And I dont have room Stats in each zone so could I use return stats to control the heat.

At the Moment I have 4 switches in the hot press that I have to manuall turn on and off and its a PITA as I dont like leaving them on over night and So I cant use the heating to warm the house before we get up.

The boiler is controled by a standard dial type timer in the Utility room would this cause me any issues with using this style of timer.

Thanks
T.

Sparkpea

I don't have experience with the 4 zoned clock but I do have experience with the 2 and 3 day clocks.

A boiler I recently changed had 2x 2 zone timers for the 4 zones and how it was wired was

zone1 HW, brings on the boiler, pump and HW zone valve
zone2 downstairs rads, opens zone valve

zone3 upstairs rads, opens zone valve
zone4 swimming pool, open zone valve

when the zone valve opens the microswitch in it starts the boiler

why are u thinking of having stats on the return? if u have trv's on surely theres no need? if you don't then i'd prefer to have a roomstat even tho I hate them but imo a stat on the return just isn't a good job.

eiei0

Thanks for the reply.
the reason for room stats was as per the diagram on this link

http://www.horstmann.co.uk/downloads/ElectronicDocuments/Central-Heating/H47XL-InstallationInstructionsSeries2.pdf

If trv's are Termostatitic rad valves then yes I have them on most rads in all zones.

I dont have zone valves I have Circulating pumps that pump the water to each Zone

Here is a Pic of what I have




The unit is €250 in heat mearchants but can be got for about £130 online but I dont want to buy it if it wont work with the setup I have

ntpm

The system you have is commonly know as a System link with pumps.


The Hortsman will work but it will not give you Boiler Interlock.
The drawing in the manual (shows motorized valves which act as an interlock).
You will need to install relays or a "wiring controller for the system link".
I prefere making a small enclosure with relays.

This will involve a fair bit of wiring but worth it in the long run as far as efiiciency gains, room temperature comfort and ease of use with new programmer.
You will need a thermostate in ech zone for the sysyem to operate correctly and comply with current Building regulations ( heating). And give you more efficient control.

Word of advice.
4 zones Programmer usually means 3 heating and 1 hot water.
3 zones Programmer usually means 2 heating and 1 hot water etc


If you have 4 Heating zones and 1 hot water zone then you technically need a 5 chanel time clock if you wanted independent time and temperature control of each zone.
In reality this is not worth it and complicates programmimg and using the programmer.

I would sugest that you "Pair up" some zones so they switch on at the same time( using common zone output from programmer).

ie. if using 4 Channel programmer (timed control overview*)
Zone 1 > main living area thermostat > Pump 1
Zone 2 > Living area 2 thermostat > Pump 2
Zone 3 > sleeping area 1 thermostat > Pump 3
> sleeping area 2 thermostat > Pump 4
Zone 4 > Hot water cylinder thermostat > Pump 5

*Relays will switch on pumps and boiler as required.

I would simplify the above by using 3 Channel and using Zone 1 for living areas, Zone 2 for sleeping areas and zone 3 for Hot water.

The Hortsmann programmers are very good and I usually fit them whenever I can.

Speak to an electician or Heating (controls) Engineer who understands boiler controls and knows about compliying with Buildiing Regs Part L - Energy Efficiency.

There may be some other works require is you have Solid fuel stove heating water and rads in the house...?

ntpm

Just to add in to the mix:

The set up looks fairly newish.

Part L building regs were in operation as far back as 2000 (Ammended continously).

The installation should not have had manual switches and should have had "Independent Time and Temperature Control" with at least 2 room stats along with a cylinder stat ( number of heating zones dependent on floor area).

You should have some comeback to the original builder/ electrician and or possible plumber as they should have carried out the works in the first place. They should have know the current regs.

If you used direct labour then you may not have been advised correctly either way give them a call.

eiei0

Thanks for the replys

Father did plumbing and the herself's brother in law did Electrical so cost was the main factor at the time.

House was built in 07/08

I do have 2 stats one for downstairs and one for upstairs and also a stat on the cylinder

I agree on pairing up 2 of The Zones but as lots of the house is not used I would try to keep the unused areas on the same zone.

There is no solid fuel.

Can anyone recommend someone in the Kildare Area that would be able to do this and not charge the earth to do it.

Thanks

ntpm

eiei0 wrote: »

Thanks for the replys

Father did plumbing and the herself's brother in law did Electrical so cost was the main factor at the time.

House was built in 07/08

I do have 2 stats one for downstairs and one for upstairs and also a stat on the cylinder

I agree on pairing up 2 of The Zones but as lots of the house is not used I would try to keep the unused areas on the same zone.

There is no solid fuel.

Can anyone recommend someone in the Kildare Area that would be able to do this and not charge the earth to do it.

Thanks

If the outlaw.. sorry I mean the inlaw is a fairly competent electrician he should be able to re-work the electrics... show him my earlier post and if needed i can pass on some more info if required. keep it in the family so to speak... if you get someone else in he make take it as an insult.... remember X-mas around the corner and having turkey dinner with family could be a bit awkward... LOL.#:D