I am about to install a 3 zone heating system (Living, Kitchen, Bedrooms) u sing 2 way values and nest thermostats for each zone.
I have recently had an ideal Logic 30 which I understand has a built in byp ass valve and thus had not intended to install another should all zones clo se at the same time.
The manual (http://idealboilers.com/installer/wp-content/uploads/sites/2/20 14/01/Logic-Combi-Installation-Manual.pdf) states quite clearly on Page 6.. .
The boiler includes as standard: - Automatic bypass - Boiler frost protection - Daily pump and diverter valve exercise.
Then very helpfully on page 9 states...
However, if the system employs thermostatic radiator valves on all radiators, or two port valves, then a bypass circuit must be fitted with an automatic bypass valve to ensure a flow of water should all valves be in the closed position.
and page 12...
Note. Systems incorporating zone valves which could completely cut off the flow through the system must also include a bypass
finally in the commissioning sheet asks if an automatic bypass is fitted or not required?
So my question is...
Does this thing have an automatic bypass included as standard or not?!?!?!? !?!?!?
Actually - similar point about frost protection - it states it is included and then on page 28 is says "If parts of the pipework run outside the house or if the boiler will be left off for more than a day or so then a frost t hermostat should be wired into the system."