We've just moved into a house and they've not left the full instructions
for the boiler controls. I've figured out how to set the programs but
there are 4 settings on the control for both CH and HW. These are Off,
On, Once and Twice. I've worked out the first two :-) but the "Once" and
"Twice" have me stumped. When selected both seem to kick the HW on, but
after that?

--
Mike Buckley
RD350LC2
CB72
http://www.toastyhamster.plus.com

mike. buckley wrote:
We've just moved into a house and they've not left the full instructions
for the boiler controls. I've figured out how to set the programs but
there are 4 settings on the control for both CH and HW. These are Off,
On, Once and Twice. I've worked out the first two :-) but the "Once" and
"Twice" have me stumped. When selected both seem to kick the HW on, but
after that?



There should also be a way to set a 1st period start time/1st period
stop time, then a 2nd period start time/2nd period stop time.

On Once will be from the start of the first period to the end of the
second. On twice will be each period as set above.

Andy C

In article ,
mike. buckley wrote:
We've just moved into a house and they've not left the full instructions
for the boiler controls. I've figured out how to set the programs but
there are 4 settings on the control for both CH and HW. These are Off,
On, Once and Twice. I've worked out the first two :-) but the "Once" and
"Twice" have me stumped. When selected both seem to kick the HW on, but
after that?

'Once' runs from the first start time to the second stop time - ie usually
all day and evening. Handy for when you're in all day. Twice gives two ons
and offs. Like on in the early morning when you get up, off during the
day, then on in the evening after work, and off during the night.

--
*Starfishes have no brains *

Dave Plowman London SW
To e-mail, change noise into sound.

In an earlier contribution to this discussion,
mike. buckley wrote:

We've just moved into a house and they've not left the full
instructions for the boiler controls. I've figured out how to set the
programs but there are 4 settings on the control for both CH and HW.
These are Off, On, Once and Twice. I've worked out the first two :-)
but the "Once" and "Twice" have me stumped. When selected both seem
to kick the HW on, but after that?


As you say, OFF is obvious - and ON pretty certainly means on all the time -
regardless of any timer settings.

TWICE almost certainly means that you can have two on/off periods per day -
e.g. one in the morning and one in the afternoon/evening, by setting the
clock appropriately.

I've not come across ONCE as such, but I guess that it equates to the ALL
DAY setting which some controllers have - coming on at the start of the
first period, and remaining on until the end of the second period.
--
Cheers,
Roger
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PLEASE REPLY TO NEWSGROUP!

In article ,
Roger Mills wrote:
I've not come across ONCE as such, but I guess that it equates to the ALL
DAY setting which some controllers have - coming on at the start of the
first period, and remaining on until the end of the second period.

The pretty generic Honeywell

http://www.screwfix.com/prods/86588/...BHCKCSTHZOCFEY

comes in both types. Only difference are the selector switches - and price.
They can be swopped with no alteration to the wiring, etc.

I've got a once/twice one here going spare after changing to a system
boiler. Just had a new battery too, if anyone is interested.

--


Dave Plowman London SW
To e-mail, change noise into sound.

In message , "Dave Plowman (News)"
writes
In article ,
Roger Mills wrote:
I've not come across ONCE as such, but I guess that it equates to the ALL
DAY setting which some controllers have - coming on at the start of the
first period, and remaining on until the end of the second period.

The pretty generic Honeywell

http://www.screwfix.com/prods/86588/...ng-Controls/Ho
neywell-ST699-Programmer;jsessionid=CKBQEHAJPBHCKCSTHZOCFEY

comes in both types. Only difference are the selector switches - and price.
They can be swopped with no alteration to the wiring, etc.

I've got a once/twice one here going spare after changing to a system
boiler. Just had a new battery too, if anyone is interested.


Thanks for the replies, very helpful.

Umm, yes, very interesting about the battery :-)

--
Mike Buckley
RD350LC2
CB72
http://www.toastyhamster.plus.com

In an earlier contribution to this discussion,
Dave Plowman (News) wrote:

I've got a once/twice one here going spare . . .

I read that as "tearing its hair out" and then realised that you meant
"surplus to requirements" g
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

"mike. buckley" wrote in message
...
In message , "Dave Plowman (News)"
writes
In article ,
Roger Mills wrote:
I've not come across ONCE as such, but I guess that it equates to the
ALL
DAY setting which some controllers have - coming on at the start of the
first period, and remaining on until the end of the second period.

The pretty generic Honeywell

http://www.screwfix.com/prods/86588/...ng-Controls/Ho
neywell-ST699-Programmer;jsessionid=CKBQEHAJPBHCKCSTHZOCFEY

comes in both types. Only difference are the selector switches - and
price.
They can be swopped with no alteration to the wiring, etc.

I've got a once/twice one here going spare after changing to a system
boiler. Just had a new battery too, if anyone is interested.


Thanks for the replies, very helpful.

Umm, yes, very interesting about the battery :-)

--
Mike Buckley
RD350LC2
CB72
http://www.toastyhamster.plus.com

It should be quite easy to download a user manual off the internet if you go
to the manufacturers web site. But note that some programmers are rebadged
(eg British Gas programmers are made by Danfoss)

Adam

Hi,what could be a problem on my fuel boiler switching off before reach pressure settings.

On 11/05/2020 11:35, wrote:

Hi,what could be a problem on my fuel boiler switching off before reach pressure settings.

What kind (make and model) of boiler is this?

Many sealed system boilers will require certain amount of pressure in
thee primary heating circuit before they can operate correctly. If the
pressure is below this limit, the boiler will normal enter a lockout
state. You would need to add more water to the primary system to fix this.

--
Cheers,

John.

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Sorry our crystal ball is away, and won't be back due to the current virus
situation

Brian
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wrote in message
...
Hi,what could be a problem on my fuel boiler switching off before reach
pressure settings.

What's a fuel boiler?

On Tue, 12 May 2020 11:27:52 -0700 (PDT), Cynic
wrote:

What's a fuel boiler?

I don't know.

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