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E-mail: [email protected]
Made in Rome, New York, USA
Once the positioning bracket is secured, mount the unit
to the bracket and make certain it fits properly. Remove
the front perforated panel to access the inside of the unit for
mounting. Lag screws and washers are provided to secure
the unit to the corner of the wall. The installer will deter-
mine whether or not wall anchors (provided by the installer)
are required. Once the unit is mounted to the corner, there
are 2 slots on either side of the chassis which are used to
secure chassis sides to the walls. For walls that are not
square, the screws should be tightened just enough to evenly
space each side. Do not over tighten.
INDOOR UNIT DRAINAGE
After the indoor unit has been installed, make sure that
condensed water is properly drained. If this is neglected,
the unit may become flooded.
Special Care Should Be Given To The Following Details
When Routing The Drain Line:
• The free end of the hose must not be tilted upward or
put into water.
• A trap or kink must not be used.
• The drain hose must slope downward to the outdoor
side.
• The end of the drain hose must never be put into
water.
ELECTRICAL WIRING
All electrical wiring should be performed by a licensed
electrician and must be in accordance with NEC and local
codes. Check the unit rating plate for circuit ampacity and
breaker or fuse size and use only HACR-type breakers.
Select the proper wire for the ampacity rating. Refer to the
wiring diagram(s) packed with each unit.
1. High voltage power connections are made inside the
control box. Supply wires enter through one of two
7/8" knockout holes. A terminal block marked with
L1 and L2 and a ground lug are provided.
2. Low voltage wiring (EMI requires 18 awg low voltage
interconnect wiring) must be run to the outdoor unit.
Refer to the unit wiring diagram for details. These
CORNER MOUNTED AIR HANDLER (CNR)
Continued
wires may be attached to the refrigerant lines when
inserting through the wall/ceiling opening. The CNR
evaporator requires 24V power for control operation.
When matching the CNR with a non-EMI condenser,
a 24V transformer may need to be added to the con-
denser.
3. Some models are made for connection to a remote
thermostat. This will require running low voltage wir-
ing to the thermostat and from the thermostat to the
outdoor unit.
OUTDOOR SECTIONS
The CNR is compatible with EMI condensing units and
does not contain a low voltage transformer as standard.
Consult the factory for other straight cool condensing appli-
cations. EMI will not warranty non-EMI heat pump units
with EMI evaporators. Make connections for the indoor and
outdoor units according to the wiring diagrams included with
the units.
REFRIGERANT PIPING
The CNR is equipped with a piston flow regulator ex-
pansion device. Piping connections are standard sweat type.
IMPORTANT: See specifications for line sizing and
actual unit connections.
1. Be certain there are no burrs on either side of the
tubing.
2. The large suction line should be insulated with closed
cell foam tube insulation. Do not insulate the small
liquid line.
CONTROLS AND COMPONENTS
SPECIFIC TO CNR
• Relays/connections for condensing unit
• Positioning bracket, templates, and mounting hard-
ware
NOTE: Please refer to the Common section in the
front of this manual for detailed instructions on:
Controls/Components, Electrical Wiring, Start-Up,
and more.
