XCI Controls TrueTouch TSZ-2 Instruction Manual - page 17
ADVANCED SETTINGS - DUAL FUEL SWITCH
33
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IMPORTANT: This feature can only be activated when used with the
TrueTouch™ Outdoor Wireless Temperature Transmitter and Receiver.
Please install the TrueTouch™ Outdoor Wireless Temperature Transmitter
and Receiver before activating this feature.
Increasing energy efficiency and reducing costs can be achieved by using the dual
fuel switch. Your heat pump can generally provide heat and comfort without assis-
tance to an outside temperature of just a few degrees below freezing. This tem-
perature is called the heat pump balance point. When the outside temperature is
above the balance point, the heat pump alone is sufficient for heating.
Once the outdoor temperature drops to the balance point the heat pump must be
assisted by your alternate energy source. When the outdoor temperature drops
below the systems normal crossover temperature (-12°C or -15°C), your heat pump
will stop operating and the alternate energy source will take over.
• HP Cut ON or OFF
• Cut Temperature:
+/-Temperature in Celsius (-5°c to 25°c)
+/- Temperature in Fahrenheit (13°F to 41°F)
1
Available only in combination with WIRELESS OUTDOOR TEMPERATURE TRANSMITTER AND RECEIVER KIT (90064)
ADVANCED SETTINGS - SYSTEM CONFIGURATION
32
!
IMPORTANT: By inadvertently modifying system configuration settings, you
may seriously degrade HVAC system performance.
>>
Choose system heating and cooling equipment - remember all you need to do is toggle
the appropriate button until the correct setting appears.
• Choose HEAT PUMP or 2 STAGE HEAT PUMP or AIR CONDITIONING or NO
COMPRESSOR - please review the wiring table and diagram for wiring instructions.
• Choose FURNACE OFF (No Furnace) or ELECTRIC FURNACE or EMERGENCY
ELECTRICAL FURNACE (additional electric furnace which will come on in emergency
mode in conjunction with electric furnace) or GAS FURNACE or OIL FURNACE or
2 STAGE GAS FURNACE; please review the wiring table and diagram for wiring
instructions.
• CYCLE RATE: Set Maximum compressor cycles per hour. We recommend that the
factory default be maintained for optimal performance..
• AUTO CHANGE: Set the minimum difference between Auto Mode, Heat and Cool
temperature setpoints. We recommend that the factory default be maintained for
optimal performance.