E
equinox
Hello Everyone,
*
I’m in serious need of your help!* This is a somewhat long story so please stay with me.
*
Background:
- Brand new house
- 3 stories
- 5 bedrooms
- 5 bathrooms
- 24KW Condensing boiler
- 300L megaflow
- Underfloor plumbed heating on all three floors
- Each manifold for the underfloor has a pump
*
Initial setup:
- Hot water pipe comes out of boiler
- T junction
- On one side you have the 300L megaflow
- On the other side you have the underfloor heating system
- There is a valve on the way to the megaflo
- Clock based system to control when the megaflo has power and to open the valve
*
Initial problem when we moved:
- Heating was working but house wasn’t getting warm (past 18*c)
- Hot water set to be “on” between 8AM and 8PM
- Hot water was never hot – only luke warm
*
Initial diagnosis by plumbers:
- All the flow at the T junction being stolen by underfloor system, so not enough hot water getting to megaflop
*
Initial “fix”
- Installed a pump after the valve to get more flow into the megaflo
- Turn downed all the heating pumps from “2” to “1”
*
Result:
- Slightly hotter water
- Heating only luke warm
*
2nd “fix”
- Change the clock timer to a two zone version
- Set times such that when the heating is on the hot water is off
- When the hot water is on the heating is off
*
Result:
- Heating works when it’s on
- Hot water works when it’s on
- If you run the tank out of water you get cold!
*
Everyone I speak to says this clock setup is wrong – that both hot water cylinder and the heating system should be able to call for heat independently, and that the boiler should be able to supply both systems simultaneously.
*
The plumbing say “it’s not their problem, it’s an electrical / wiring issue”.
*
But I don’t understand how that can be the case.* Is not that the boiler simply isn’t producing enough hot water?
*
Many thanks for your help!
*
I’m in serious need of your help!* This is a somewhat long story so please stay with me.
*
Background:
- Brand new house
- 3 stories
- 5 bedrooms
- 5 bathrooms
- 24KW Condensing boiler
- 300L megaflow
- Underfloor plumbed heating on all three floors
- Each manifold for the underfloor has a pump
*
Initial setup:
- Hot water pipe comes out of boiler
- T junction
- On one side you have the 300L megaflow
- On the other side you have the underfloor heating system
- There is a valve on the way to the megaflo
- Clock based system to control when the megaflo has power and to open the valve
*
Initial problem when we moved:
- Heating was working but house wasn’t getting warm (past 18*c)
- Hot water set to be “on” between 8AM and 8PM
- Hot water was never hot – only luke warm
*
Initial diagnosis by plumbers:
- All the flow at the T junction being stolen by underfloor system, so not enough hot water getting to megaflop
*
Initial “fix”
- Installed a pump after the valve to get more flow into the megaflo
- Turn downed all the heating pumps from “2” to “1”
*
Result:
- Slightly hotter water
- Heating only luke warm
*
2nd “fix”
- Change the clock timer to a two zone version
- Set times such that when the heating is on the hot water is off
- When the hot water is on the heating is off
*
Result:
- Heating works when it’s on
- Hot water works when it’s on
- If you run the tank out of water you get cold!
*
Everyone I speak to says this clock setup is wrong – that both hot water cylinder and the heating system should be able to call for heat independently, and that the boiler should be able to supply both systems simultaneously.
*
The plumbing say “it’s not their problem, it’s an electrical / wiring issue”.
*
But I don’t understand how that can be the case.* Is not that the boiler simply isn’t producing enough hot water?
*
Many thanks for your help!
