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pghstochaj
Hi everybody,
I have just had an Ecotec 637 system boiler with Unistor 300 tank installed. These are controlled using the Evohome system although I haven't yet bought the TRV heads so it is just working as a single thermostat control.
Everything is working correctly in that the thermostat is calling for heat (HW or CH) and the respective valve is opening and telling the boiler to fire. The boiler goes through its start up cycle, the burner lights and stays at 50% for about 2 seconds and then modulates right down. The water temp in the boiler during this period will be around 30degC and maybe 15 minutes later the boiler modulates up and then runs fine. If I turn the boiler on and off then it skips this 15 minute wait and modulates straight up.
Is this behavior normal and this boiler is just slow to react, or is something else happening?
I don't want to call back my installer just yet, until I know whether something is wrong or it is just my ignorance.
Sorry if I have missed anything out from the above, just let me know and I will answer it. Regarding the boiler size, it's a large house and the boiler is appropriately sized.
Cheers
I have just had an Ecotec 637 system boiler with Unistor 300 tank installed. These are controlled using the Evohome system although I haven't yet bought the TRV heads so it is just working as a single thermostat control.
Everything is working correctly in that the thermostat is calling for heat (HW or CH) and the respective valve is opening and telling the boiler to fire. The boiler goes through its start up cycle, the burner lights and stays at 50% for about 2 seconds and then modulates right down. The water temp in the boiler during this period will be around 30degC and maybe 15 minutes later the boiler modulates up and then runs fine. If I turn the boiler on and off then it skips this 15 minute wait and modulates straight up.
Is this behavior normal and this boiler is just slow to react, or is something else happening?
I don't want to call back my installer just yet, until I know whether something is wrong or it is just my ignorance.
Sorry if I have missed anything out from the above, just let me know and I will answer it. Regarding the boiler size, it's a large house and the boiler is appropriately sized.
Cheers