Need some help connecting an oil combo boiler

[willelec]

First time connecting an oil combo boiler. I have a Honeywell wireless room stat and 2 channel programmer. Could anyone with boiler experience give me some guidance please?

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[Leesparkykent]

Why is there a two channel programmer? Is there a hot water cylinder?

 

[willelec]

That’s what I was thinking.. no cylinder

 

[Leesparkykent]

Just noticed the connections in the 1st post. The the hot water side of the two Channel programmer is for timing the pre heat of the hot water. It's just an extra function that keeps the water hot when timed so when a hot tap is opened the hot water doesn't take ages to come through. You would just time the hot water pre heat on the timer for when hot water is at its highest demand...morning, lunch time and evening etc. Live out on boiler connects to L of programmer and thermostat, CH on connects to A, B connects to LR with radiator symbol, HW on connects to LR with tap symbol, neutrals and earths terminated appropriately.