Asked by: Hadhoum Thimm
home and garden home appliances

Does a combi boiler need a programmer?

Last Updated: 28th February, 2020

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A combi boiler does not have a hot water storage tank - it heats the water for the sink / bath etc. Therefore you do not need a programmer - only a timeswitch to tell the boiler when to start heating the radiators in the morning before you get out of bed and again before you come in from your days work.

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Keeping this in view, do I need a room thermostat with a combi boiler?

By regs, it should have had a Room Thermostat Fitted to act as a boiler interlock. If the system is left to rely on the boiler stat then it will cycle when the system gets to temp which means it will keep going on and off. This isnt as efficient as having a Room Thermostat. The answer is yes.

Also, how does a boiler programmer work? The programmer means that the boiler will only fire up as per the times set, however if the house reaches a certain temperature the thermostat will instruct the boiler to turn off. Working together, thermostats and programmers and TRVs compliment each other to help you tailor your heating demands.

Also question is, what power supply does a combi boiler need?

All combination boilers require a power supply. This is usually provided by a 3A switched fused spur adjacent to the boiler. A 3 core flex connects to the boiler terminals, which will be the standard L N and E.

Can I use a hive dual channel receiver on a combi boiler?

The single channel version of the Hive is for combi boilers and provides control of the heating only. The dual channel version of the Hive is for heating systems with control of the heating and separate stored hot water.

Related Question Answers

Laurel Basedahl

Professional

Does hive work with a combi boiler?

For use with combi boilers. Control heating remotely via Android or iOS devices. Geolocation and text control enable heating alerts and send commands to the Hive anytime, anywhere. Functions include holiday mode to ensure heating is on prior to returning to the property or as and when required.

Shenika Urruela

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Can a boiler be plugged into a socket?

Answer: Yes, central heating boilers can be plugged into a 13A socket outlet or connected to a 13A fused connection unit.

Karsten Choupeiro

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Does a boiler need a fused spur?

Fused Spurs
A Fused Spur is an electric point with its own removable fuse and an isolation switch. Current regulations require your new boiler to have an electricity supply from a fused spur, as this ensures that when an engineer carry's out routine maintenance on your boiler, there is no danger of electrocution.

Foday Babo

Pundit

Can you use any thermostat with a boiler?

Combi, heat only and system boilers are compatible with programmable thermostats but you will need to factor in hot water controls if you have a heat only or system boiler.

Remona Tons

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What temperature should I set my boiler for radiators?

Your boiler controls explained
To maximise efficiency, we recommend setting your radiator dial to 75 degrees and your hot water to 60 degrees. Once you've got your boiler running at the optimal temperature, you'll want to set the timer for when you need heating the most. With a combi boiler, hot water is on demand.

Roc Lucan

Pundit

Can I use my boiler without thermostat?

This is not a control but a system of wiring that turns the boiler off when neither the room thermostat nor the cylinder thermostat needs it. Without this, the boiler can continue to 'cycle' and waste energy.

Bayron Allermann

Pundit

What temperature should a combi boiler run at?

For combi boilers it is recommended to set the output temperature for the radiators at 75 degrees and the water temperature at 60 degrees.

Anneli Schrors

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Is it cheaper to leave central heating on low all the time?

According to experts at the Energy Saving Trust, as well as British Gas, the idea it's cheaper to leave the heating on low all day is a myth. The Energy Saving Trust says if you're keeping the heating on all day you're losing energy all day, so it's better to heat your home only when you need it.

Catheryn Isuribhere

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What should boiler pressure be when heating is on?

What pressure should my boiler be? Generally, your boiler pressure should be between 1 and 2 bar. However, read your boiler's manual or ask your heating engineer for the required pressure for your particular model. To check your boiler's pressure, you need to locate the pressure gauge on your boiler.

Francho Gulchenko

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How long does it take to heat a house 1 degree?

On paper at least I think the boiler and rads are correctly sized but the heat-up time still seems rather slow. On average from a cold switch-on it takes about an hour to raise the temperature by 1 degree and around 45 minutes per degree after that.

Ludivino Nespoli

Teacher

How does a thermostat work with a combi boiler?

A thermostat mounted in one room monitors the temperature and switches the boiler off when it's hot enough, switching the boiler back on again when the room gets too cold. Waste gases from the boiler leave through a small smokestack called a flue and disperse in the air.

Meissa Eze

Reviewer

What is the most economical temperature for central heating?

Traditionally, radiators fed by central heating systems operate at higher temperatures (from 60 to 80 degrees C). A lower temperature flow (as low as 35 degrees) is becoming more common, and is desirable because it is more efficient.

Alis Senfleben

Reviewer

What temperature should central heating thermostat be set at?

Room thermostat
The thermostat records the home's temperature and if it's either at or above the set level (and 20°C/68°F is usually adequate) it stops the boiler from operating the central heating.

Lorita Panciewic

Reviewer

Do combi boilers use more gas?

Since combi boilers don't have to store any hot water, the heat losses via the hot water tank are zero, helping save you money on your gas bills. They take advantage of heat exchangers to make the most of this latent heat, so less fuel is needed each time to heat the water, thereby further reducing your fuel costs.

Rabab Sassoon

Reviewer

Can combi boilers heat water and radiators at the same time?

A combi boiler will usually need to pause from heating the central heating water for your radiators while it's heating the hot water for your tap, because they often can't supply enough heat to supply to both at the same time.

Mohamedou Cacosk

Supporter

How many heat exchangers are in a combi boiler?

How a combi boiler works (at least a modern combi boiler) is: They have two heat exchangers inside them; 1. A primary heat exchanger.

Bharata Notman

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What fuel do combi boilers use?

LPG combi boilers are similar to oil combi boilers but instead of using oil as a fuel supply, they use LPG (Liquid Propane Gas) instead. Similar to an oil boiler, you'll need it delivered to your home and a storage tank to store your gas.

Ivanov Hormanns

Beginner

Should boiler be on separate circuit?

When it's spurred from the ring, both sockets and heating are affected where as if separate, only the affected circuit is affected, this is why in new builds the boiler tends to be on its own separate circuit in order to minimise any inconvenience should/when a fault occurs.

Detlef Sakellariou

Beginner

How much does it cost to run an electric combi boiler?

Running Costs of Electric Boilers
Prices are based at a standard rate of 16p kWh and will vary depending on your energy consumption. Households that only use electric combi boilers at night and qualify for the Economy 7 rate will pay around 6p/kWh rather than 16p/kWh.