Hot Water too Hot with Vaillant Ecotec Boiler and Vented System
Posted: Sun Nov 01, 2015 2:35 pm
I have a Vaillant ecotec boiler with a hot water tank and vented central heating system with a Y 3 port honeywell motorised valve
I have a Salamander pump driving a disabled shower enclosure.
If I set the tank thermostat to 60'C and the hot water setting on the Vaillant to 60 and the radiator setting on the Vaillant to 60 the shower works fine.
The salamander cuts out if the hot water > 60'C
If I set the Vaillant radiator temperature to 65-70 on a cold day, the radiators are warmer but the hot water also gets too hot and the salamander shower pump pulses and you are advised to switch off or you'll damage it.
My question is why does the radiator setting heat up the hot water as well ?
I've checked the tank thermostat so is it a 3 port valve fault or a wiring fault ?
I have a Salamander pump driving a disabled shower enclosure.
If I set the tank thermostat to 60'C and the hot water setting on the Vaillant to 60 and the radiator setting on the Vaillant to 60 the shower works fine.
The salamander cuts out if the hot water > 60'C
If I set the Vaillant radiator temperature to 65-70 on a cold day, the radiators are warmer but the hot water also gets too hot and the salamander shower pump pulses and you are advised to switch off or you'll damage it.
My question is why does the radiator setting heat up the hot water as well ?
I've checked the tank thermostat so is it a 3 port valve fault or a wiring fault ?
