www.enviromaster.com
High Efficiency Condensing Units
3
ITEMS FOR CONSIDERATION
• Locate the unit as close to the indoor section as possible.
Maximum length allowed is 100'.
• Avoid high traffic areas and prevailing wind locations.
• Surface must be level.
• Mount unit above typical snow levels.
Ensure free flow of air through the unit. Air must not recirculate
from discharge to intake. Air is drawn through the coil with side,
or top discharged through the fan grille.
A minimum 48" clear-
ance is necessary for the condenser discharge. Intake (coil
side) clearance is 12" minimum.
Consider how power will be
run to the unit from the power source. Refrigerant piping must
be a direct line to the indoor unit.
Heat pump units produce condensate in the heat pump mode.
Water will drain from the unit at the base. Place the unit so as
not to create a hazard for pedestrians.
SITE PREPARATION
Place the unit on a flat concrete surface or pad if on the ground.
Roof mounting should use a build up platform. Piping is through
the wall or roof directly to the unit.
In areas of heavy snowfall,
condensers should be set above the level of maximum an-
ticipated snowfall (12" is usually adequate).
ELECTRICAL WIRING
CONTROLS AND COMPONENTS
(FACTORY INSTALLED OR SUPPLIED)
• Compressor and Fan Motor Contactor
• Capacitor
• Loss of Charge Switch (09 - 15 only)
• Defrost Control Board and Sensor (SHC only)
• Low Voltage Connections
• Large Capacity Suction Accumulator (09 - 15 only)
• High Pressure Control (SCC 18 - 36 and all Heat Pumps)
• Solid Core Filter Drier (09 - 15 only)
• Crankcase Heater (09-15K Heat Pump)
SYSTEM OPTIONS
• Low Ambient Option (Specify this option if system will oper-
ate in cooling mode at outside temperatures below 60º F
down to 0
o
F)
• Sea Coast Style Coated Coils
• 115V (09-12 only)
• 265V (all models)
• Hard Start - Straight Cool only (standard on Heat Pumps)
INSTALLER SUPPLIED ITEMS
• Power wiring
• Low Volt wiring - 18 AWG minimum
• Secure mounting pad or foundation
• Refrigerant piping (if not supplied)
• Disconnect switch
LOW AMBIENT OPTION
MUST BE SPECIFIED IF:
The system will be asked to cool at
outdoor temperatures below 60º F, this may cause damage to the
compressor and coil, and could result in freezing that may void
the warranty. We accomplish the low-ambient operation on our
condensers by cycling the condenser fan. When in low-ambient
operation the system high side pressure will cycle (fairly rapidly)
between 275 psi and 210 psi. This will in turn maintain a constant
low side pressure and keep the air handler from frosting-up.
NOTE:
If this option is not specified and system runs under
low-ambient conditions and experiences any failures (com-
pressor, motor, etc.), warranty on these components may
not be honored.
EMI AMERICASERIES CONDENSING UNIT - COMMON SECTION
The EMI AmericaSeries condensing unit must:
• Be connected to a properly grounded electrical
supply with the proper voltage as stated on the
rating plate.
• Have proper over current protection (i.e. time-
delay fuse/HACR-Breaker) as listed on the
Rating Plate.
Failure to follow these instructions can result in a
fire, explosion, or electrical shock causing property
damage, personal injury, or death.
!
!
DANGER
Do not use the
EMI AmericaSeries condensing unit
with any electrical supply voltage other than the one
listed on the rating plate.
Check the rating plate on the unit for the correct voltage
rating. Failure to use the correct voltage may result in
death, serious bodily injury or property damage. If you
have any questions or doubts, consult the factory before
installing this unit.
!
!
DANGER
Note: Refer to the units' wiring diagram for all
wiring.
All electrical wiring must be run according to NEC and local
codes. Refer to the unit rating plate for voltage, ampacity and
fuse size requirements. Use only HACR type breakers. Select
the size wire according to the ampacity rating. Power should be
run to a weather proof disconnect box usually within 3 feet of the
unit. From the disconnect box, run the power through the 7/8" hole
and into the electrical box and anchor with a strain relief fitting.
Run wires to the high Volt L1 and L2 connections. Also run green
wire to ground lug.
Check wiring diagrams for the required number of low voltage
wires to be run between indoor and outdoor sections. Connect
the 24 Volt wiring matching color to color. Refer to the wiring
diagram inside the unit for more details.
Low Volt interconnect
should be at least 18 AWG.
