The Ductless Split System of Choice
Made in Rome, New York, USA
7
Re-test the oil after 48 hours. If acid is still present,
install a new suction drier. If acid is not present, re-
move suction drier.
EVAPORATOR COIL FREEZE-UPS
If your EMI indoor coil freezes in the straight cooling
mode, it is probably caused by one of the following:
System undercharge
Very low primary voltage
Stuck compressor contacts
Refrigeration circuit restriction
Incorrect expansion device (too restrictive)
Very low indoor load (low indoor temperature)
Airflow problem (defective motor, plugged filter, unit
blocked by curtains, furniture, etc.)
Low ambient cooling without low ambient controls.
If the system is asked to cool indoor space while out-
door space is consistently below 60° F, the system must
be fitted with low ambient components. For these
cases, EMI offers an optional low ambient field in-
stalled kit.
NOTE:
EMI technical service can help you di-
agnose problems with your unit(s). Feel free
to call us Monday through Friday from 8am-
5pm at (315) 336-3716.
CHILLED WATER PIPING (WCP/CCP/FCP)
Standard connections provided are sweat type. See
specifications for line size and actual unit connections.
NOTE:
Water pipe sizes are given in I.D.
Use pipe unions or compression fittings to aide fu-
ture service. Use isolation valves to aide in unit re-
moval.
Connections can be brazed or soft-soldered.
Follow manufacturers instructions for any field
installed control valves.
Unit control is provided for a 24v normally closed/
power open valve.
NOTE:
Consult factory if other types of valves
are used.
Insulate supply and return piping with closed cell
foam tube insulation.
Avoid necessary bends.
Avoid kinks by using a tubing bender.
Make sure glycol solution is compatible with all
valves, unions, and compression fittings. Ethylene or
propylene is recommended.
Bleed air from system prior to start-up. Units are
equipped with a standard air bleeder on the highest
point of the unit piping.
CAUTION:
Disconnect power when bleeding
system. Make certain liquid does not contact
any electrical components.
Finish all piping before balancing the system. Bleed
system, adjust temperature and/or water flow rate until de-
sired results are achieved.
The unit filter must be in place and able to be removed
easily for maintenance. To avoid vibration, check chilled
water lines to ensure they are not in contact with each other.
The unit(s) must be mounted securely and level. (See
In-
stallation, Operation & Maintenance Guide
for complete
instructions.)
WSP/WHP & FSP/FHP UNIT MOUNTED
ELECTRONIC CONTROLS (FEATURES)
Large 3/4" LCD Display
Operational range adjustable between 55°and 90° F
in 1.0° increments
Anti-Short Cycle Compressor Protection
Fan Purge (fan remains on for 60 seconds after heat/
cool call is dropped for improved efficiency)
Indoor Coil Freeze Protection (available in Straight
Cool, Cooling Only With Optional Electric Heat, Cool/
Heat Pump With Electric Strip Heat, and Two Stage
Heating).
Fan Operation (Auto, High, Low)
Auto Fan Operation-
Automatically selects fan speed
according to heating or cooling demand.
Constant Fan Operation-
Manually selected High
or Low Speed.
Optional Hand Held Infrared Controller (a separate
Hand Held Remote used to command the Onboard
Controls).
Test Operation (allows ease of unit testing after in-
stallation by eliminating all timers).
DIPSWITCH SETTINGS
Dipswitches are located in the control section on the
universal relay board. They must be set according to the unit
application (i.e., straight cool, electric heat, heat pump).
The dipswitches must be set prior to installation and
before either the indoor or outdoor units are connected to
power (use the following table as a guide).
Sw itch
1
2
Cooling Only
off
off
Cool/Electric Heat
on
on
All Heat Pumps
off
on
