Aegis AEGIS 1000 Instrukcja Instalacji Pobierz pdf (Strona 22)

Page 22

4. Heat Pumps

Programmable Energy Saver Modules are compatible with heat pumps, however, the savings gained by setting the heat pump

back may be erased by the auxiliary heaters when the heat pump tries to recover from the setback. A PESM will work best

with heat pumps that have one or more of the following features:

a. An outdoor temperature switch that prevents the auxiliary heat from coming on unless it is very cold outside. This is

sometimes called a "heat balance" switch.

b. A thermostat that uses rate of rise to determine if auxiliary heat is necessary: For example, the Enerstat Model DSL-450,

when recovering from setback, the thermostat runs the heat pump first. It will run the auxiliary heat only if the rate of

temperature rise is less than 6 degrees F. per hour.

c. An alternative auxiliary heat source that is inexpensive (i.e. gas).

These features will avoid the use of auxiliary heat (usually an electric strip heater) which is more expensive than using the

heat pump when recovering from setback. In general, heat pumps take a longer time to recover from setback, so it may be

advantageous to program a setback only for extended periods, such as a vacation.

OUTDOOR TEMPERATURE, TEMPERATURE SENSORS

The outdoor temperature sensor mounts in an outdoor location, usually under an overhang, and sends the outdoor temperature to

an Aegis 1000 system. It is coated with a sealant to withstand outdoor moisture. The outdoor temperature can be displayed on

the console, spoken over the telephone, or displayed on an Aegis Communicating Thermostat.

1. Each Temperature Sensor requires one zone input.

- Program the zone type as an Outdoor Temperature (Type 81). It may also be programmed as a Temperature (Type 82),

or Temperature Alarm (Type 83).

2. Plan to mount the outdoor temp sensor under an overhang or to the underside of an eave, otherwise known as the soffet, to

protect it from direct sunlight and rain. Run a 4-conductor wire from the Aegis controller to the selected location.

3. Connect the red conductor to AUX 12V, the black conductor to AUX GND, and yellow conductor to the Zone (Z1-Z24)

using the 3 B-GEL watertight wire splices. The green conductor is not used.

4. Mount the sensor using the 2 - #6 x 1/2" stainless steel self-tapping screws.

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Aegis AEGIS 1000 Instrukcja Instalacji Strona 22