Micro-Air, Inc.
Page 19
EasyTouch 2.5 Operations Manual
Rev 1.0 8/27/14
11.1.7 Electric Heat Option (OFF/ON;
OFF
)
For DX systems
, when this parameter is set to OFF, the valve output is enabled for use with
a reversing valve, will toggle prior to cooling/heating cycles, and be energized for heating
cycles. When this parameter is set to ON, the valve output is enabled for use with an electric
heater or heater contactor, will no longer toggle, and will energize only during heating cycles
without the compressor or pump.
For CW systems
, when this parameter is set to OFF, only the valve output will be energized
during a heat cycle if the water temperature permits. When this parameter is set to ON, the
compressor output is enabled for use with an electric heater or heater contactor and will
energize together with or separately from the valve output during a heating cycle, depending
on the water temperature. Please refer to section 11.3.2 for more information on how the
electric heater output works in concert with the valve output during CW heating operation.
IMPORTANT:
Please refer to section 17 for more information on the electrical specifications for
the valve and compressor outputs. It is important to consider the size and load of
any electric heater, and it may be necessary to install an additional contactor that
is rated to handle the full load of the electric heater. Please consult with Micro-Air
Customer Service or with an authorized service technician for assistance.
11.1.8 Fan Motor Type (Split Capacitor/Shade Pole;
Split Capacitor
)
The Split Capacitor default setting is frequently the correct setting for most modern air
conditioning unit blowers. If the air conditioning unit has a shaded-pole fan motor instead of a
split- capacitor fan
motor, you MUST choose “Shaded Pole” for the
Fan Motor Type
parameter setting before operating the equipment. Shaded-pole fan motors are most often
recognizable by an overhanging blower motor, whereas split-capacitor fan motors are most
often enclosed inside the blower housing.
IMPORTANT:
Failure to select Shaded Pole for this parameter setting for an air conditioning
unit with a shaded-pole fan motor could result in the fan motor stalling and
overheating at low fan speeds. It is therefore very important to insure that this
setting is correct.
11.1.9 Filter Hours Setting (OFF/100-2500;
OFF
)
The Filter Hours setting can be set as a reminder to clean
or replace the unit’s air filter. The
reminder for air filter cleaning or replacement is determined by the number of hours of fan
operation. By default, this reminder is off, but it can be enabled by selecting the number of
operating hours until the filter reminder message appears (shown only on the Main screen).
The parameter setting can be adjusted from 100 to 2500 hours. Micro-Air recommends that
you check the air filter at least every 500 hours of operation. Once set, a separate timer
keeps track of the total amount of run hours that the fan accumulates. Once the reminder
time has expired, a message will be displayed on the Main screen. System operation will
continue normally without any interruption while this reminder is being displayed. The
reminder can only be cleared and the timer reset via the
Filter Hours Reset
parameter. See
section 11.1.10 for more information on how to inspect and reset the filter reminder.
11.1.10 Filter Hours Reset (clears reminder and resets hours only)
The Filter Hour Reset setting shows the number of fan operational hours that have
accumulated since the reminder was last reset. The only option when viewing this parameter
is to clear it by pressing the CLR button. This action will clear the filter reminder and reset
the accumulated hours to 0.
