combi boiler plumbed as a system boiler advice please

[buckley plumb]

No problem using a combi as a system boiler providing the DHW side of the combi is a water to water plate heat exchanger not a gas to water heat exchanger on a few dual heat exchanger models.

what about the intergas one thats gas water and can be used as htg only

 

[Reg Man]

what about the intergas one thats gas water and can be used as htg only

Dual heat exchanger. will need water in the DHW side otherwise it could melt down. Best ask Intergas themselves. Will stand corrected if they say you can.

 

[Mike Jackson]

I'd be very surprised if you can't with an intergas as you can run them with the CH side empty.

 

[Ray Stafford]

Best ask Intergas themselves.

Im seeing them tomorrow. Will ask and let you know.

 

[GasMark1]

i have never heard of this but what a great idea, do you need to do anything other than an s plan, ie wiring....to the" combi" or do you fit as per combi with the addition of s plan.. what about the diverter valve if the heating is calling and the hot water on the s plan side then someone opens a local tap off the combi side ?????
Mark

 

[leethegasman]

Dual heat exchanger. will need water in the DHW side otherwise it could melt down. Best ask Intergas themselves. Will stand corrected if they say you can.

I was at trade show 2 years ago and the inter gas stand told me that you cold fill just the domestic side to give the customer domestic hot water while you poss upgrade the heating next day as a bit of a selling point.so i suppose if this was the case you could fill and run just heating side. but was only a verbal chat. if any one was to wont to do this I would have it confirmed.never installed intergas so never needed to follow this up.

 

[Reg Man]

You were right about this Intergas boiler. They stipulate in there instruction manual, that you can use it solely for HTG or DHW. Just have to change the parameters on corrospondingly.