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Vennerette mk11a central heating control

How to program

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Can I put my central heating on a different time from my water horstmann didam 425


It appears there are 4 trippers on the daily time dial that control all timing. 2 On and 2 OFF

On the right side are override switches for Hot water and Heating
You can only separate Hot water and Heater programming a little bit.
You can choose to have Hot water ON all day, or turn on-off once per day or turn on-off twice a day. Or OFF all day.
The Heater has the same options and the same on-off times as the Hot water.

Manual:
http://www.horstmann.co.uk/files/2513/9867/2118/user_guide_425-TiaraDiadem1.pdf

For fully separate programming, where Hot water and Heater can each be programmed differently, you would need a 2-channel controller like the Grasslin QE2
http://www.grasslin-controls.co.uk/towerchronqe2.html

http://waterheatertimer.org/pdf/Grasslin-QE1-QE2_GB-instructions.pdf


Gene

Oct 11, 2014 | Water Heaters

1 Answer

Siemens rwb29 controller doesn't work properly. central heating comes up only when you select hot water, but not on its own


This happens to my rwb29 from time to time. You can try switching off the power to the controller for a couple of minutes with CH thermostat and CH programs set off. Or you can press the little reset button to the bottom right of the LCD screen. After 1 or 2 attempts these steps usually restore the independent control on my unit.

Nov 05, 2012 | Siemens RWB29

1 Answer

I need programming info for an Altech model ALTHC001 central heating and hot water programmer


Can you please tell me how to set clock for central heating the clock is an althc001 had power switch off and when it was turn back on the clock is not working when the boiler is calling for heat and the same with the heating can you help

Oct 07, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Every time we put on the central heating our water runs cold


What kind of water heater do you have?
In any case, it sound like a plumber should check out system.

Do you have indirect heater that gets heat from central heating boiler?
Most indirect/boiler combo heaters have control that is set to heat the water first.
If water is not getting heated, then the control needs repair.

Do you have gas water heater with gas central heating?
The central heater may be drawing so much gas from meter, that other gas appliances are unable to function. larger gas meter or gas line may be needed.
Or if furnace and water heater vent on same chimney, the backflow from central heat could be affecting burner on water heater especially if water heater has electronic sensor that stop combustion if air quality is bad. Venting problems can lead to CO poisoning, and are a serious matter.

Nov 18, 2010 | Water Heaters

1 Answer

Programmable Thermostat Heater: no power to honeywell central heating control...


Multiple possibilities:
Damage to cable (doing any DIY?)
Failure of thermo
Board gone in heat unit
Possibly simple as loose or disengaged connection, check at thermo & heat unit, if nothing obvious, call serviceperson.

May 18, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell Central Heating temperature control


R comonY cool W heat G fan C other side of 24 unless you are battery operated. On the back of the Tstat tou should have switch that says gas or electric this controls how the fan operates. If not go into programing and program 1 stage heat one stage cool.Let me know I will walk you thru this.

Nov 18, 2009 | Honeywell Electronic Programmable...

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