Ideal Logic Combi Boiler Installation Question

the_biochemist

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Feb 19, 2016, 9:55:37 AM2/19/16

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Hi I am a little confused...

I am about to install a 3 zone heating system (Living, Kitchen, Bedrooms) using 2 way values and nest thermostats for each zone.

I have recently had an ideal Logic 30 which I understand has a built in bypass valve and thus had not intended to install another should all zones close at the same time.

The manual (http://idealboilers.com/installer/wp-content/uploads/sites/2/2014/01/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 thermostat should be wired into the system."

Any ideas?

Martin Bonner

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Feb 19, 2016, 10:28:26 AM2/19/16

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Ask Idealboilers directly? There's a "Contact US" form, and a technical
helpline number at the top of the front page.

Martin Bonner

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Feb 19, 2016, 10:29:18 AM2/19/16

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It's quite likely the wording is generic, so it's presence doesn't prove
the boiler is missing bypass or frost protection

matthew....@googlemail.com

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Feb 19, 2016, 10:58:13 AM2/19/16

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Thanks, that seems like a reasonably sensible approach!!!

Mike Clarke

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Feb 19, 2016, 12:09:56 PM2/19/16

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On 19/02/2016 14:55, the_biochemist wrote:

> 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
> thermostat should be wired into the system."

The built in frost protection will cut in if the boiler gets cold enough
to freeze. If other parts of the house (e.g. pipes under the
floorboards) are exposed to lower temperatures they won't be protected
by the in built frost stat.

--
Mike Clarke

Bill cross

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Nov 20, 2018, 6:44:05 AM11/20/18

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replying to the_biochemist, Bill cross wrote:
The reason they like one rad not to have themostatic valves is when you run
the boiler for a while it gets hot and when all controls switch back off, it
will go in to pump over run mode, this is to remove heat from the boiler to a
radiator, normally a bathroom towel rail

--
for full context, visit https://www.homeownershub.com/uk-diy/ideal-logic-combi-boiler-installation-question-1109336-.htm