I have a two zone s plan CH/HW system (HW and CH on separate honeywell v4043h valves). The valves are on the return side of the system and their outlet sides merge via a T peiece after about a foot of pipe to feed into the input of the pump (that then drives the returned water through the boiler).
Since we bought the house a month ago I have been curious as to why it takes the radiators so long to warm up and why balancing the system has proved so difficult.
Today I noticed that when the heating came on, the outlet side of the Hot Water zone valve got hot much faster than the outlet of the Central Heating zone valve. This was despite the HW circuit being inactive. I took the covers off the Honeywell v4043h valves and found that the CH was open (as expected) but that the Hot water valve was in its closed position.
Despite being in its closed position though, hot water was obviously flowing through the HW valve and the hot water cylinder pipes heated up very quickly (to the detriment of the CH circuit).
When the HW circuit is activated, the syncro motor on the HW valve head operates as expected and the spring return closes the valve again once the HW call is removed. However, regardless of syncro motor position, the water keeps flowing.
Has anyone else seen a V404h3 valve fail in this manner. I can believe it might leak a bit but this one seems to be totally open all the time despite its actuator on the valve head moving normally.
Cheers,
iep
Since we bought the house a month ago I have been curious as to why it takes the radiators so long to warm up and why balancing the system has proved so difficult.
Today I noticed that when the heating came on, the outlet side of the Hot Water zone valve got hot much faster than the outlet of the Central Heating zone valve. This was despite the HW circuit being inactive. I took the covers off the Honeywell v4043h valves and found that the CH was open (as expected) but that the Hot water valve was in its closed position.
Despite being in its closed position though, hot water was obviously flowing through the HW valve and the hot water cylinder pipes heated up very quickly (to the detriment of the CH circuit).
When the HW circuit is activated, the syncro motor on the HW valve head operates as expected and the spring return closes the valve again once the HW call is removed. However, regardless of syncro motor position, the water keeps flowing.
Has anyone else seen a V404h3 valve fail in this manner. I can believe it might leak a bit but this one seems to be totally open all the time despite its actuator on the valve head moving normally.
Cheers,
iep