E-mail: [email protected]
Made in Rome, New York, USA
14
COMMON TO All AIR HANdlERS - SEqUENCE OF OpERATION
Continued
dRY MOdE OpERATION
Dry mode will remove humidity from the air while
maintaining a specific setpoint temperature. This is done
in cooling along with the electric or hydronic heater. Dry mode
will not
maintain a specific humidity level. The unit must be
equipped with an optional electric heat element or hydronic
coil.
For Dry Mode operation first turn the unit on via the
On/
off
button. Select
Dry
mode via the
Mode
button. The room
temperature will be displayed. Then by depressing either the
Up
or
Down
arrow once, the setpoint temperature will appear.
The setpoint temperature can then be changed with each
successive press of the
Up
or
Down
arrow or by holding the
button in.
Place the setpoint temperature at a desired room tem-
perature. Depending on the difference between room tem-
perature and set point temperature cooling and/or heating will
energize. If the room temperature and setpoint temperature
are the same the unit will operate in cooling and the electric
heat source will also energize.
Should the room temperature fall below the setpoint
temperature by two degrees, cooling will stop and heating will
continue to boost the room temperature back up to stepoint
temperature. If the room temperature rises above the setpoint
temperature by two degrees, heating will stop and cooling will
continue to bring the room temperature back down to stepoint
temperature. The fan will operate continuously at low speed
while in Dry Mode.
OpTIONAl ElECTRIC HEAT OpERATION
Important:
The dip switch 1& 2 must be set to ON
For electric heat operation first turn the unit on via the
On/Off
button. Select
heat
mode via the
Mode
button. The
room temperature will be displayed. Then by depressing
either the
Up
or
Down
arrow once, the setpoint temperature
will appear. The setpoint temperature can then be changed
with each successive press of the
Up
or
Down
arrow or
by holding the button in. Place the setpoint temperature
above room temperature. The electric heat will energize
and heating will continue as long as the setpoint remains
above room temperature. Once the room temperature is
satisfied the electric heat will cycle off. The fan will operate
as described in “Fan Operation”
(
Figure 5)
.
UNITS WITH CONdENSATE pUMpS
EMI Air handlers are available with an optional con-
densate pump. Condensate pumps are recommended
when it is not possible to gravity drain the condensate
from the indoor unit. Depending on the pump manufacture
the maximum lift for the pump will vary. Consult the pump
instructions for the maximum lift for the particular pump
being used or refer to specific pump kit information and
instructions as supplied by EMI.
Condensate generated by the evaporator will collect in
the pumps’ reservoir. When the water level is high enough,
a float switch will close and energize the pump motor clear
-
ing the water from the reservoir. Should for any reason the
water exceed the maximum preset level, a safety switch
will open. This will prevent the evaporator from generating
more condensate and spilling out of the unit.