Hunter Fan 44428 - Manual (Page 17)

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Operations 17
Your thermostat has an additional operational switch which enables
you to select 3 different modes of operation for heating.
1. Normal Operation:
In this operation your thermostat will function in accordance to your
heating and A/C programs. The sequence of operation of different
stages will be as per table on page 28.
Different Operation Modes
2. Emergency Operation:
In this operation the compressor will not operate. Only auxiliary heat
will control the room temperature as per your heating program. For
example, you might select this mode to bypass your heat pump, if
you suspect it is not operating properly.
3. Auto Recovery Operation:
See next section for detailed explanation.
What Is Temperature Recovery?
Consider the following example for explanation.
Suppose the thermostat is programmed to turn the heat on at 6:00 AM
to raise the temperature from a set-back temperature of 60°F to 68°F.
In the normal operation mode, the heat will turn on at 6:00 AM and
begin to raise the temperature to 68°F. The room will attain 68°F
sometime after 6:00 AM, for example 30 minutes later at 6:30 AM.
The time to raise the temperature from 60°F to 68°F will depend on
several factors like outside temperature, efficiency of the unit and
insulation of the house. At about 6:30 AM the temperature in the
house will be the desired temperature of 68°F.
In temperature recovery mode, the heat will turn on sometime before
6:00 AM, so that at 6:00 AM, the program time, the temperature in the
house will already have achieved the desired temperature of 68°F. This
early turn on time period is called recovery time.
The Hunter Energy Monitor has an exclusive method built into the
thermostat computer. This method is designed to maximize efficiency
of recovery in the most economical way, without the use of auxiliary
heat (or minimum use if necessary), which will result in maximum sav-
ings in various weather conditions.
Present time is 2:00 AM, the effective current program is number 4.
The next program is at 6:00 AM at 68°F.
In the normal operation, at 6:00 AM, the furnace will turn on to raise
the temperature from 58°F. Your house will attain 68°F some time after
6:00 AM. For our understanding, say 6:35 AM. The time required to
reach 68°F will depend upon outside temperature on that day and the
efficiency of your heating system.
In temperature recovery operation, your system will gradually raise the
house temperature some time prior to 6:00 AM, o that at 6:00 AM your
system will have achieved the programmed temperature.
The time to activate temperature recovery and sequence of operation
of different stages of the system is set by an internal computer after
several complex computations based on how “hard” your system
needs to work to maintain the programmed temperature.
At 6:00 AM, the recovery cycle stops and automatically controlling
the system normally, auto recovery will also take place during program
2, to raise the temperature from 60°F to 68°F just prior to reaching
program 3 at 4:00 PM.
We recommend using this exclusive feature of auto recovery as often
as you can to optimize the efficient use of energy.
When temperature recovery is activated, “AUTO RECOVERY” will
appear, indicating that recovery has begun. When the set temperature
is achieved and the next program time is reached, the recovery cycle
ends and the “AUTO RECOVERY” will disappear from the display.
NOTE: Auto Recovery will not be activated in manual override modes.
How Does Temperature Recovery Work? Consider The Following Example.
PROGRAM # TIME PROGRAM TEMPERATURE
1 6:00 AM 68°F
2 8:30 AM 60°F
3 4:00 PM 68°F
4 11:00 PM 58°F