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A question I’m regularly asked is “What are the three switches on the wall next to a Pulsacoil for?<\/i>”\u00a0The reasons are complicated but I’ll try to simplify.<\/p>\n
There are lots of versions of Pulsacoil. Some have two electrical supply cables while others have three.\u00a0<\/p>\n
For those with three cables, these being the Pulsacoil 3, Pulsacoil 2000, Pulsacoil ECO and\u00a0 Pulsacoil Stainless, the cables are as follows:<\/p>\n
1) Cable one: A low cost off-peak electrical supply normally switched on and off automatically by the electricity company. Leave the wall switch ON all the time as the electricity company will turn the supply on at night and off during the day. This cable does the main work in heating hot water overnight, using ‘low cost’ night rate electricity.\u00a0(‘Low cost’ means low, relative to the price of daytime electricity.)<\/p>\n
2) Cable 2: A permanent daytime electrical supply for the electronic control board and pump. Keep this switch ON all the time too, so the pump can run when you turn a hot tap ON, and supply the hot water.<\/p>\n
3) Cable 3: A permanent daytime electrical supply cable connected to the emergency backup electric immersion heater element. Keep this turned OFF normally. It is intended for you the user to turn ON if the off-peak heater fails, or if you have used up all the hot water heated the previous night and you need more hot water immediately. Turn it OFF after use or your electricity bills will be unnecessarily high.<\/p>\n
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<\/p> For the A-Class, there will be only two cables.\u00a0 One cable is the off-peak cheap rate electrical supply which is normally switched on automatically at night and off during the day by the electricity company. The other is a permanent daytime electrical supply which runs the control board and the pump, Both switches on the wall need to be left ON all the time. This only applies to the Pulsacoil A-Class, which instead of a ‘Boost’ switch on the wall, has a ‘Boost’ button on the appliance control panel.<\/p>\n For versions of this appliance with two cables, these being the Pulsacoil Original and the Pulsacoil BP, (but NOT the Pulsacoil A-Class which works differently) there is no control board or pump. The two cables are as follows:<\/p>\n 1) Cable 1: The low cost, off peak electrical supply to the main heater element. Leave with switch turned ON all the time as the electricity turns the supply on at night for you (and off during the day), so the heater uses only low cost night-time electricity to heat your water.\u00a0 For more information about Pulsacoils in general, check out my other posts in my blog section about them\u00a0here.<\/a>\u00a0<\/p>\n![\"Photo](\"https:\/\/miketheboilerman.com\/blog\/wp-content\/uploads\/2022\/07\/Screenshot-2022-07-09-at-08.47.54-300x220.png\")
2) Cable 2: This is connected to the daytime back-up heater element for you to use if the main heater stops working, or if you need extra hot water. Keep it turned OFF normally and turn it ON only if you need emergency hot water. Turn it OFF after use or your bills will be higher than necessary.<\/p>\n