Hi
I have bought a Evohome WiFi Connected Thermostat Pack (ATP921R3100) and the HR92 radiator valves.
I am trying to understand the wiring for my Worcester Bosch (highflow 400) combi boiler. I don't have a hot water tank, the hot water is on demand from this boiler.
I have 4 wires on the control panel
L
N
DHW (assume Domestic Hot Water)
CH (assume Central Heating)
IMG_0661.jpg
On the Honeywell BDR91 relay, I have connected the :
N wire -> N
L wire -> L and a jumper wire to the second L
CH wire -> A
DHW -> B
The hot water is still working on demand, but I can't get the heating to come on when I turn the temperature up in any of the zones.
Please can someone tell me what I am doing wrong? I have been searching the internet for hours!
thanks
Bill
I have bought a Evohome WiFi Connected Thermostat Pack (ATP921R3100) and the HR92 radiator valves.
I am trying to understand the wiring for my Worcester Bosch (highflow 400) combi boiler. I don't have a hot water tank, the hot water is on demand from this boiler.
I have 4 wires on the control panel
L
N
DHW (assume Domestic Hot Water)
CH (assume Central Heating)
IMG_0661.jpg
On the Honeywell BDR91 relay, I have connected the :
N wire -> N
L wire -> L and a jumper wire to the second L
CH wire -> A
DHW -> B
The hot water is still working on demand, but I can't get the heating to come on when I turn the temperature up in any of the zones.
Please can someone tell me what I am doing wrong? I have been searching the internet for hours!
thanks
Bill
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