|
Q: How is the HeatManager fuel economizer different from an outdoor reset control?
A: HeatManager incorporates the same principles as outdoor reset (i.e. adjusting boiler water temperature to match system heat load), but it does so more effectively. By measuring heat load directly at the boiler supply pipe, HeatManager gives the “whole story”, whereas outdoor reset controls can’t account for factors like wind and solar effects, insulation levels, window orientation, home occupancy, etc. HeatManager is also easier to install than an outdoor reset control. HeatManager requires no programming or setup at installation, and it does not need an outdoor temperature sensor.
Q: Why is the temperature sensor on the supply pipe rather than the return pipe?
A: Because when the system is off for any appreciable amount of time, the circulating water will be at or close to ambient temperature, and the return water temperature will not give a good indication of the energy stored in the boiler. By being on the supply pipe, the HeatManager takes advantage of the energy stored in the boiler and maximizes savings.
Q: Does the HeatManager boiler control work with multiple zoned systems?
A: Yes. The HeatManager is actually most effective on systems that have many zones. In a multiple zoned system, the boiler has been sized to heat all zones at the same time, so when only one zone is calling, the system is that much more oversized. The HeatManager compensates for the oversizing and eliminates the short cycling that is such a problem with multiple zoned systems.
Q: Can the HeatManager be used on millivolt systems?
A: No, the HeatManager requires either 24 VAC or 120 VAC from the burner circuit. It can not be used with millivolt systems.
Q: Can the HeatManager be used on gravity feed systems?
A: It is not recommended to use the HeatManager on a gravity feed system. This is because a gravity system relies on water between 160 and 180 degrees F to properly flow through the system. Varying the differential will most likely upset the thermal inertia of the water.
Q: Can the HeatManager be used on a system that has a setback thermostat?
A: The HeatManager works equally well on systems with setback thermostats.
Q: What type of sensor is the temperature sensor?
A: It is a solid state sensor, designed specifically for use with digital circuitry.
Q: Does the HeatManager boiler control work effectively with a low-mass boiler?
A: HeatManager will work with a low-mass boiler, but its fuel savings will be diminished. For maximum savings, the HeatManager is best suited for installation on standard boilers.
|
