The boiler temperature control acts as a limit control switch, meaning it can be made to open when temperature rises and made to close and/or open when the temperature goes down. This is possible because it has a temperature sensing element. The switch also acts as the central link between the burner and circulator operation. The three types of boiler temperature control are: single acting, dual acting and triple acting.
Although it is not a must to understand how these work since you can always rely on services of boiler repair Surrey or boiler installation experts in Guildford, it helps a lot for those who want do one of two minor maintenance tasks on their own. Remember, any boiler will require you doing regular maintenance work, and you do not have to call boiler repair experts in Surrey or professionals in boiler installation in Guildford. Doing maintenance practices on your own helps save on costs.
1. Single acting boiler temperature control: This control acts like an on – off switch and is high limit function type of control. It is set to close on a high limit, i.e. the maximum temperature the boiler can attain. It means the boiler is set to turn off on reaching this point – in fact, it is set at 10° less than the high limit setting. The burner can still turn on if called upon to heat. The control in the low limit – which is set at 10° higher than the low limit temperature – is set to start on the burner. However, the burner can still turn off if there is no need for heating. Two single acting boiler temperature controls can be used to control the low and high limit: one is set for high and the other for low limit.
2. Dual acting: Boiler repair experts in Surrey or those who do boiler installation in Guildford can install this type when you need services of a single acting control and a circulator terminal controller. So this type has a high limit/differential function along with controlling the circulator, with the former acting as a single acting temperature control while the latter plays the role of energizing a circulator to distribute heat transfer fluid to heated zones. The circulator is turned on and off by a thermostat as dictated by sensed temperature in the heated space. The circulator is turned off by the opening of the temperature control if temperature falls below the low limit, in order to maintain minimum boiler temperature.
3. Triple acting boiler temperature control: This type has a high and low limit with differential functions, but it adds in a relay to energize the circulator. The high and low limits work the same way as in a Single Acting Boiler Temperature Control. Just as is the case with the Dual Acting Boiler Temperature Control, the thermostat controls the opening and closing (turning on and off) of the circulator. When the temperature of the water drops below the low limit, the circulator is turned off by the opening of the temperature control, and this action helps to maintain a minimum boiler temperature.
Although it is not a must to understand how these work since you can always rely on services of boiler repair Surrey or boiler installation experts in Guildford, it helps a lot for those who want do one of two minor maintenance tasks on their own. Remember, any boiler will require you doing regular maintenance work, and you do not have to call boiler repair experts in Surrey or professionals in boiler installation in Guildford. Doing maintenance practices on your own helps save on costs.
1. Single acting boiler temperature control: This control acts like an on – off switch and is high limit function type of control. It is set to close on a high limit, i.e. the maximum temperature the boiler can attain. It means the boiler is set to turn off on reaching this point – in fact, it is set at 10° less than the high limit setting. The burner can still turn on if called upon to heat. The control in the low limit – which is set at 10° higher than the low limit temperature – is set to start on the burner. However, the burner can still turn off if there is no need for heating. Two single acting boiler temperature controls can be used to control the low and high limit: one is set for high and the other for low limit.
2. Dual acting: Boiler repair experts in Surrey or those who do boiler installation in Guildford can install this type when you need services of a single acting control and a circulator terminal controller. So this type has a high limit/differential function along with controlling the circulator, with the former acting as a single acting temperature control while the latter plays the role of energizing a circulator to distribute heat transfer fluid to heated zones. The circulator is turned on and off by a thermostat as dictated by sensed temperature in the heated space. The circulator is turned off by the opening of the temperature control if temperature falls below the low limit, in order to maintain minimum boiler temperature.
3. Triple acting boiler temperature control: This type has a high and low limit with differential functions, but it adds in a relay to energize the circulator. The high and low limits work the same way as in a Single Acting Boiler Temperature Control. Just as is the case with the Dual Acting Boiler Temperature Control, the thermostat controls the opening and closing (turning on and off) of the circulator. When the temperature of the water drops below the low limit, the circulator is turned off by the opening of the temperature control, and this action helps to maintain a minimum boiler temperature.
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