isOF(off).Thissettingcanonlybeequaltoorabovethesetting
choicemadeforOption11.Movingthissettinglowermaypush
Option11settingdownward.
TOSELECT
1.Enterconfigurationmodeifnotalreadythere.SeeStep4
"ToEnterConfigurationMode."Useup anddown
buttonstomakesmall(nowflashing)displayindicate8.
2.PressSETTIME/TEMPbuttononcetoflashlargedisplay.
3.UseupordownbuttonstomovebetweenOF(off),5,10,
15,20,25,30,35,40,45,50, or 55 on large display.
Factory default is OF (of*).
4. Press SET TIME/TEMP button again to flash upper small
display for selection of another option, or press END to
exit configuration mode.
Option 9--Intenigent Heat Staging
This option requires prior selection of single-stage heat pump
(DIP switch 1 ON, DIP switch 2 OF). It provides 3 stages of
electric heat from Wl and W2 by sequencing W1 only, then W2
only, then both Wl and W2. See FK or FV Series Fan ('oil
Installation Instructions for further information. For 3-stage heat,
select ON. For normal 1-or 2-stage heat, select OF (off). Factory
default is OF (off).
TO SELECT
1. Enter configuration mode if not already there. See Step 4
"To Enter Configuration Mode." Use up and down
buttons to make small (now flashing) display indicate 9.
2. Press SET TIME/TEMP button once to flash large display.
3. Use up or down buttons to alternate between OF (of*) and
ON on large display. Factory default is OF (of1).
4. Press SET TIME/TEMP button again to flash upper small
display for selection of another option, or press END to
exit configuration mode.
Option 10--Hybrid Heat Equipment
The high pressure switch protects compressor and indoor coil
from overpressure which would occur if a failure or wiring error
resulted in the heat pump and furnace operating at the same time.
High Pressure Switch Kit includes required switch and
instructions for proper operation. For all Hybrid Heat
installations, outdoor temperature sensor must be attached. If not,
E3 error message will appear. See "Error Codes." This option
requires prior selection of heat pump (DIP switch 1 ON), and
must be selected in Hybrid Heat installations. It prevents
simultaneous operation of both furnace and heat pump, and
prevents direct transition from heat pump to furnace operation.
When system is Hybrid Heat (heat pump and furnace), set to ON.
When system contains fan coil, set to OF (of*'). Factory default is
OF(off).
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
All Hybrid Heat installations must be equipped with a
high pressure switch to turn off compressor under a
high indoor coil pressure condition.
TO SELECT
1. Enter configuration mode if not already there. See Step 4
"To Enter Configuration Mode." Use up and down
buttons to make small (now flashing) display indicate 10.
2. Press SET TIME/TEMP button once to flash large display.
3. Use up or down buttons to alternate between OF (off) and
ON on large display. Factory default is OF (off).
4. Press SET TIME/TEMP button again to flash upper small
display for selection of another option, or press END to
exit configuration mode.
Option ll--Balance Point Setting
This option is for Hybrid Heat installations only. It requires prior
selection of heat pump (DIP switch 1 ON) and Hybrid Heat
equipment (Option 10 ON). It allows selection of an outdoor
temperature of 5°F through 55°F (or equivalent values in C), or
OF (off). Heat pump is prevented from operating for outdoor
temperatures below selected temperature. If OF (off) is selected,
heat pump operation is allowed at all outdoor temperatures.
Factory default is OF (of*'). This setting can only be equal to or
below the setting choice made for Option 8. Moving the setting
higher may push Option 8 setting upward. If the outdoor
temperature is above the "balance point setting", the heat pump
will energize first to try to satisfy the indoor temperature demand.
If the heat pump does not make a sufficient improvement within a
reasonable time period (i.e. 15 minutes), then the gas furnace will
come on to satisfy the indoor temperature demand. If the outdoor
temperature is below the "balance point setting" the heat pump
will not be allowed to operate (i.e. locked out), and the gas
furnace will be used to satisfy the indoor temperature.
There are three separate concepts which are related to selecting
the final "balance point setting". Read each of the following
carefully to determine the best "balance point setting" in a Hybrid
Heat installation.
CAPACITY BALANCE TEMPERATURE
This is the point where the heat pump cannot provide sufficient
capacity to keep up with the indoor temperature demand because
of declining outdoor temperature. At or below this point, the
furnace is needed to maintain proper indoor temperature.
ECONOMIC BALANCE TEMPERATURE
Above this point, the heat pump is the most cost efficient to
operate, and below this point, the furnace is the most cost efficient
to operate. This can be somewhat complicated to determine and it
involves knowing the cost of gas and electricity, as well as the
efficiency of the furnace and heat pump. For the most economical
operation, the heat pump should operate above this temperature
(assuming it has sufficient capacity), and the furnace should
operate below this temperature.
COMFORT BALANCE TEMPERATURE
When the heat pump is operating below this point, the indoor
supply air feels uncomfortable (i.e. too cool). This is purely
subjective and will depend on the homeowner's idea of comfort.
Below this temperature, the gas furnace should operate in order to
satisfy the desire of indoor comfort.
TO SELECT
1. Enter configuration mode if not already there. See Step 4
"To Enter Configuration Mode." Use up and down
buttons to make small (now flashing) display indicate 11.
2. Press SET TIME/TEMP button once to flash large display.
3. Use up or down buttons to move between OF (off), 5, 10.
15.20. 25, 30, 35, 40, 45, 50, or 55 on large display. Fac-
tory default is OF (off).
4. Press SET TIME/TEMP button again to flash upper small
display for selection of another option, or press END to
exit configuration mode.
H
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