Hi
I have bought a new house with an old boiler. The problem is i cant get hot water without putting the heating on even if i select hot water only on the programmer.
The boiler is a potterton profile 40e
The programmer is a horstmann c27
It has a honeywell y plan 3 pos diverter valve
How its wired
Boiler to programmer
Live to Live
Neutral to Neutral
Earth to Earth
live S/W x 2 to terminal 3
junction box (if you can call it that they have used a conn block with tape.)
programer terminal 3 to live on pump
programer terminal 4 to orange wire on valve
all neutrals connected on valve and pump via programmer neutral
and thats it. no sign of the cylinder thermostat wiring.
The system seems to be a open vented fully pumped I think . I will need to rip up the floor to check for more valves.
Hope someone can help.
cheers
I have bought a new house with an old boiler. The problem is i cant get hot water without putting the heating on even if i select hot water only on the programmer.
The boiler is a potterton profile 40e
The programmer is a horstmann c27
It has a honeywell y plan 3 pos diverter valve
How its wired
Boiler to programmer
Live to Live
Neutral to Neutral
Earth to Earth
live S/W x 2 to terminal 3
junction box (if you can call it that they have used a conn block with tape.)
programer terminal 3 to live on pump
programer terminal 4 to orange wire on valve
all neutrals connected on valve and pump via programmer neutral
and thats it. no sign of the cylinder thermostat wiring.
The system seems to be a open vented fully pumped I think . I will need to rip up the floor to check for more valves.
Hope someone can help.
cheers