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Step 5: Set the SMC55-HWQS Advanced Parameters to Modify the
Functionality of the HVAC System
(continued)
Parameters Applicable to All Types of HVAC Equipment
Some of the advanced configuration parameters are applicable to all types of HVAC equipment. This sections lists out the details
about these parameters.
(01A) Function Type
Use this parameter to define if the SMC55-HWQS is configured to work with the thermostat or configured to work as a
standalone device without the thermostat. The SMC55-HWQS can work as a standalone HVAC controller if a remote air sensor
is connected to the SMC55-HWQS. The default value for this parameter is set as '02: Not Configured'. Saving and exiting the
basic configurations mode will automatically set this parameter to '00: Operate with Thermostat' by default.
This parameter can be set to '01' to still function without the thermostat connected. Once the thermostat is connected, you must
change the value of this parameter back to '00' so that the SMC55-HWQS should work with the thermostat.
Note: Standalone mode ('01') requires connecting a wired remote air temperature sensor to the SMC55-HWQS. See the
SMC55-HWQS instruction sheet included in the box with the remote air temperature sensor. Set the parameter '02A' to '00:
Remote Temperature Sensor' so that SMC55-HWQS can work with the remote sensor.
(02A) Temperature Sensor Type
Use this parameter to identify the temperature sensor used to measure the room temperature. Set this parameter to '01' if using
the sensor inside the thermostat to measure the room temperature. Set this parameter to '00' if using the remote temperature
sensor to measure the room temperature.
(06A) Minimum Fan On Time
Use this parameter to identify the minimum time the fan will run once it has turned on irrespective of whether or not the system is
running. This minimum run time is used to avoid short cycling the fan motor.
(07A) Extended Cool Fan Time (OCFT)
Use this parameter to identify the extended amount of time which the fan runs after the system stops cooling. This is used to
purge the cool air out of the vents.
(08A) Extended Heat Fan Time (OHFT)
Use this parameter to identify the extended amount of time which the fan runs after the system stops heating. This is used to
purge the hot air out of the vents.
(11A) Cool Fan On Delay (CFOD)
Use this parameter to identify the time delay before the fan turns on after the system starts cooling. This is used so that
uncomfortably hot air is not blown out of the vents.
(12A) Heat Fan On Delay (HFOD)
Use this parameter to identify the time delay before the fan turns on after the system starts heating. This is used so that
uncomfortably cold air is not blown out of the vents.
(18A) Standalone Temperature Operation Mode
Use this parameter to identify the operating mode when the SMC55-RESI is set up to work in a standalone mode without the
thermostat.
(19A) Standalone Temperature Fan Mode
Use this parameter to identify the fan mode when the SMC55-RESI is set up to work in a standalone mode without the thermostat.
Continued on next page...
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