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Multi-zone Heat Pump Condensing Units
EMI AMERICA SERIES MULTI-ZONE HEAT PUMP CONDENSING UNITS
CONTROLS AND COMPONENTS
(FACTORY INSTALLED OR SUPPLIED)
• Compressor and Fan Motor Contactor
• Capacitor
• Loss of Charge Switch (9&12 Only)
• Low Voltage Connections
• Large Capacity Suction Accumulator
(9, 12, & 18 Only)
• High Pressure Control (18 & 24 Only)
• Solid Core Filter Drier
• Crankcase Heater (9&12 Only)
• Common suction pressure access point
• Hard Start Capacitor
ITEMS FOR CONSIDERATION
• Locate the unit as close to the indoor sec-
tion as possible. Maximum length allowed
is 100 equivalent feet.
• 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 in
-
take. Air is drawn through the coil with side,
or top discharged through the fan grille. A
minimum 48” clearance 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.
SYSTEM OPTIONS
• Sea Coast Style Coated Coils /
Copper-Copper coils
• Wind Baffles - Louvers
•
INSTALLER SUPPLIED ITEMS
• Power wiring
• Low Volt wiring - 18 AWG minimum
• Secure mounting pad or foundation
• Refrigerant piping
• Disconnect switch
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 anticipated
snowfall (12” is usually adequate).
DESCRIPTION
EMI offers the finest multi-zone heat pump
outdoor units in the ductless split market,
the S & T series (S2HA, T2HA, T3HA &
T4HA) Condensing Units. The S & T series
(S2HA, T2HA, T3HA & T4HA) allows the
installation of two or more circuits from a single
outside location when space or aesthetic
requirements limit the use of the number of
cabinets outdoors. Each zone is independent
so no mixing of refrigerant occurs.
When specifying heat pump(s), it is
recommended that the matching indoor
unit(s) be equipped with electric heat. The
S & T series (S2HA, T2HA, T3HA & T4HA)
Condensing Units will operate down to 35°F
outdoor temperature, at which point it will
initiate change over to electric heat and
shut down the condenser. All 9,000, and
12,000 Btuh circuit units are equipped with
the Duratec Performance
Package which
include a large capacity suction accumulator
with surge baffles and enhanced oil
management, a factory installed solid core
filter drier and loss of refrigerant charge
protection. All 18,000 and 24,000 Btuh
circuit units include a solid core filter drier
and high pressure limit switch. The 18,000
Btuh circuits also include a large capacity
suction accumulator with surge baffles and
enhanced oil management.
NOTE: The crankcase heater is installed
with 9,000 and 12,000 Btuh heat pumps.