Residential Dual Energy - Hydro-Québec

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Different moDes of operation The mode selection switch on the dual-energy system is used to choose whether the heating system runs on fuel, dual energy or electricity. For the heating system to switch automatically from electricity to fuel during high-rate periods and back again in low-rate periods, the switch must be in the Dual Energy position. Otherwise, the sensor doesn’t send signals to the heating system. In other words, to optimize the performance of your dual-energy system and benefit fully from Rate DT, leave your system in dual-energy mode. tHe best position: Dual energy When the mode selection switch is in the Dual Energy position, the outdoor temperature sensor controls the automatic switchover to the most economical energy source. 4 0 o C -12oC -15oC ELECTRICAL HEATING Low electricity rate SwITCHovER TEmpERATuRE −12°C, or sometimes −15°C, depending on your climate zone FuEL HEATING High electricity rate iNdiCAtor LiGHt* mode seLeCtioN sWitCH duAL-eNerGy HeAtiNG system duAL-reGister meter Hydro-QuébeC seNsor distributioN PANeL *optimal location 5
electromechanical dual-register meter Unlike a standard meter, an electromechanical dual-register meter has two sets of dials. the upper register (red hands) counts the kilowatthours used during cold periods, when the temperature is below the switchover temperature. Your consumption is then billed at the higher rate. The indicator light goes on and stays on as long as you’re being charged the higher rate. the lower register (black hands) records the electricity consumed at the lower rate, when the temperature is equal to or above the switchover temperature. The meter comes with a box containing a sensor that reads the outdoor temperature. As soon as it drops below the switchover temperature, the sensor signals the heating system to switch from electricity to fuel. If the meter is located inside your home, the sensor is placed outside in a box usually attached to the power supply mast. electronic dual-register meter The electronic dual-register meter has an LCD display that shows the kilowatthours at the higher rate, then the kilowatthours at the lower rate. The rate is displayed as a number (02 = higher rate, 05 = lower rate) on the left side of the display (A = higher rate and B = lower rate). the indicator light: A warning to conserve and save The green indicator light on the meter is always lit and shows that the control mechanism is operating. The red indicator light next to it and another rate indicator light inside the house both go on whenever the dual-energy system is running on fuel. They show that the higher rate is being charged for electricity. You should cut back on your use of other electric appliances at those times. When the high-rate period ends, the red light goes off and your heating system switches back to electricity at the lower rate. 6 7
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Residential Dual Energy - Hydro-Québec

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