The Ductless Split System of Choice
Made in Rome, New York, USA
11
Auto
fan mode can only be selected if the unit is in
Heat
or
Cool
. In Auto mode the fan will cycle with the call
for
Heat
or
Cool
. Fan speed will be determined by the mi-
croprocessor and speed adjustments will be made according
to room temperature and setpoint. The fan will switch to
High
speed when room temperature deviates by more than
2° F from setpoint. The fan will switch to low speed if the
deviation is 1° F. When the room temperature reaches
setpoint temperature the heat/cool call is dropped. The fan
will then stay on for an additional 60 seconds to purge the
unit of any residual energy.
C
OOLING
O
NLY
O
PERATION
To select
Cool
mode, turn the unit on via the
On/Off
switch. The LCD will display room temperature. Select
Cool
mode via the
Mode
button. Then, by depressing either the
Up
or
Down
arrow once, the setpoint temperature will ap-
pear in the LCD display. 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 tem-
perature below the room temperature. The compressor will
start and cooling will continue as long as the setpoint is be-
low the room temperature.
Once room temperature is satisfied, the compressor
will cycle off. The fan will operate as described in Fan
Operation. Once the compressor is switched off (or if power
is lost), there is a three-minute delay before restarting.
O
PTIONAL
E
LECTRIC
H
EAT
O
PERATION
(S
TRAIGHT
C
OOL
U
NITS
O
NLY
)
To select
Heat
mode, turn the unit on with the
On/Off
switch. The LCD will display room temperature. Select
Heat
mode via the
Mode
button. Then, by depressing either the
Up
or
Down
arrow once, the setpoint temperature will ap-
pear in the LCD display. The setpoint temperature can then
be changed with each successive press of the
Up
or
Down
arrow or by holding the button in. The electric heat will en-
ergize and heating will continue as long as the setpoint is
above the room temperature. The fan will operate as de-
scribed in Fan Operation.
O
PTIONAL
H
EAT
P
UMP
WITH
E
LECTRIC
H
EAT
(2-
STAGE
H
EATING
)
To select
Heat
mode, turn the unit on with the
On/Off
switch. The LCD will display room temperature. Select
Heat
mode via the
Mode
button. Then, by depressing either the
Up
or
Down
arrow once, the setpoint temperature will ap-
pear in the LCD display. 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 tem-
perature above the room temperature. The compressor will
start heating and run as long as the setpoint is above the
room temperature.*
* Some EMI heat pump condensers are equipped with a low tem-
perature cutout that will shut down the compressor & energize the
indoor electric heat when outdoor temperatures fall below 0° F.
Once the room temperature is satisfied, the compres-
sor will cycle off. The fan will operate as described in Fan
Operation. Once the compressor is switched off (or power
is lost), there is a three-minute delay before it will re-start.
Should the room temperature fall more than 2° F below the
setpoint, the electric heat will energize along with the heat
pump (2-stage heating).
The electric heat will continue to run until the devia-
tion between room temperature and setpoint temperature is
less than 2° F. At that time the electric heat is switched off
and the heat pump will take over the heating demand. This
will continue until the room temperature reaches setpoint
temperature and heating demand is satisfied. The fan will
operate as described in Fan Operation.
CHARGING EMI SPLIT SYSTEMS
EMI publishes a variety of charts that are to be used
as a general guideline for properly charging EMI systems.
We make available the following Charge Tables and Op-
eration Charts to assist the installer at time of startup.
It is very important to note that they should be utilized
whenever starting up a complete EMI Split System combi-
nation. However, there are a wide range of variables that
will cause your readings to deviate from published data some-
what.
NOTE:
EMI highly recommends using the Su-
perheat values from the Operation Charts as
a final fine-tune of system charge.
R
ECOMMENDED
S
YSTEM
C
HARGING
P
ROCEDURE
Step 1-
Following proper evacuation (to 200 microns
or less), release factory charge from condenser
throughout the system by backseating the refrigerant
valves. This is enough refrigerant for a system that
has little to no interconnect (enough refrigerant for
condenser and evaporator only).
Step 2-
Use supplied Refrigerant Charge Tables for
deciding how much refrigerant you will need to weigh
into your system to bring it close to optimum. EMI
recommends that, when weighing in refrigerant per
chart information, you initially leave the charge short
(3-5 ounces) as your exact combination or ambient
conditions may cause a small deviation from chart
value.
Step 3-
With your refrigerant gauges on the system
high and low side, let the system settle out and compare
values to the supplied Operation Chart values for
your combination. You can now fine tune your system
charge by adding (or reclaiming) enough refrigerant
