EMI CAC_36, Инструкция по установке, эксплуатации и обслуживанию

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31 Cassette Air Handler
SEqUENCE Of OpERATION
In Remote Thermostat Mode the control
will not accept commands from the
optional
Infrared Hand Held Controller. Also the fil
-
ter check timer will default to 1000 Hrs.
CHOOSINg A THERMOSTAT:
EMI offers several remote thermostats
that are compatible with the Cassette
Ductless Split System air handler. Check
latest price list or contact EMI for available
thermostats. It is important to choose a
thermostat that will match the equipment
that you have selected. For single stage
cooling or heating choose a single stage
Heat/Cool thermostat. If you have select
-
ed an outdoor heat pump unit and an in
-
door unit with electric heat then choose a
two (2) stage heating, single-stage cooling
thermostat.
SELECTINg A THERMOSTAT “BY OTHERS”:
When selecting a thermostat other than
those offered by EMI, it is important to
choose a 24 V thermostat that matches
your application. EMI equipment is com
-
patible with most mercury bulb, digital, or
power stealing thermostats.
COOLINg ONLY”
Select a thermostat that is compatible with
a cooling system. The thermostat should
have “R”, “Y” and “G” terminals. The ther
-
mostat may also have a “C” terminal.
COOLINg ONLY WITH ELECTRIC HEAT:
Select a thermostat that is compatible with
a cooling - electric heat system. The ther
-
mostat should have “R”, “Y”, “W” and “G”
terminals. The thermostat may also have
a “C” terminal.
HEAT pUMp WITH ELECTRIC HEAT:
Select a thermostat that is compatible
with a single stage cooling, two (2) stage
heat, heat pump system. The thermostat
should have “R”, “Y”, “O”, “W (or W2)” and
“G” terminals. The thermostat may also
have a “C” terminal. If the indoor unit is
not equipped with electric heat, a single
stage heat pump thermostat is adequate.
EMI outdoor heat pump units utilize a re
-
versing valve that is energized in
Cooling
Mode.
Make sure that the thermostat se
-
lected will energize the reversing valve in
Cooling Mode.
FAN OpERATION:
The indoor unit utilizes a two speed motor.
For Remote Thermostat Operation, fan
speed selection can be made through the
DIP switch settings located on the main
control board. By setting DIP switch #3
Remote Thermostat Fan Speed Selection
to oN
, the fan speed will be set to High.
Switching to off
, the fan speed is set to
Low. See Table #1 for other available DIP
switch selections.
The remote thermostat will control the call
for fan operation (on or off) through the
low volt terminals “R” and “G”. When the
remote thermostat connects “R” to “G” the
fan will energize. After the thermostat has
been satisfied and the call for heating or
cooling has been removed, the indoor fan
will remain on for an additional sixty (60)
seconds. This increases efficiency by pull
-
ing the remaining energy from the unit.
Some thermostats are equipped with an
AUTo/oN fan switch. When this switch is
placed in the ON position the indoor fan
will run continuous. When the switch is in
the AUTO position the indoor fan will cycle
with the call for heating or cooling.
COOLINg OpERATION:
The remote thermostat will control the call
for cooling operation (on or off) through
the low
Volt terminals R and Y. After con
-
necting the thermostat to the unit, place
the system switch in
Cooling Mode
. Adjust
the setpoint temperature below the room
temperature. The compressor and fan mo
-
tors will start and cooling will begin. Next,
place the setpoint temperature above the
room temperature. The outdoor condenser
will stop. The fan will operate as described
in “Fan Operation”.