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The Ductless Split System of Choice Made in Rome, New York, USA 1
tion on “Maximum Range vs. Limited Range Heat
Pumps”).
• Circuit Numbering:
9 (9,000 BTU/h)
2 (12,000 BTU/h)
5 (15,000 BTU/h)
8 (18,000 BTU/h)
4 (24,000 BTU/h)
3 (30,000 BTU/h)
0 (No Compressor)
• The MC/MH2 is only available in three capacities
and only in dual zones. This means you can order any
combination of two circuits in either the MC or MH
units. The capacities are 9, 2, and 5 (as noted above).
• With an MC/MH4, you cannot mix and match any
15,000 BTU/h or 30,000 BTU/h unit with other ca-
pacities in a heat pump (ex: An MC4 2203 is a good
combination while an MH4 2203 is not).
• The only capacities available in 4 zones are 9,000,
12,000, and 15,000 BTU/h circuits. If an 18,000,
24,000, or 30,000 BTU/h capacity is incorporated, the
maximum number of circuits falls to three (3). A unit
model number with three (3) circuits will have a “0”
in the model number (ex: MC4 9208). If the capaci-
ties required are any combination of 18,000, 24,000,
or 30,000 BTU/h, the number of circuits equals two
(2) and the unit model number will have two zeros
(ex: MC4 0803).
• The MC and MH units utilize separate refrigeration
circuits that are independent from each other. Each
circuit has its own compressor and control circuit.
There is one condenser fan that is operating continu-
ously when one or all of the circuits are functioning.
If the heat pump (MH) model is selected, the user can
run one circuit in cooling mode and one in heat mode
if desired.
• Air handlers that can be matched with the preceding
condensing units are CAH, CSP/CHP, FSP/FHP, TBH,
and WHP.
SITE INFORMATION/REQUIREMENTS
• Do not install units in high traffic areas, drip lines of
roofs, or overhangs.
• EMI condensers require a minimum 12” intake air
clearance and 48” discharge air clearance for proper
unit operation. We also recommend a minimum 12”
clearance to the side and 48” to the front and rear be-
GENERAL INFORMATION
This guide is intended for use by EMI contractors,
distributors, installers, representatives, and service
technicians to gain a better understanding of EMI Ductless
Split Systems.
This guide will supplement the information found in
the Installation, Operation, & Maintenance Guide and the
Specifications & Performance Guide for your unit. EMI also
publishes Policy Bulletins pertaining to specific installation
and service issues. These bulletins can be found in the full
line catalog and topics include (but are not limited to):
• Equipment Matching
• Labor Allowances
• Return Policies
• Run Length/Lift
• Tubing Size Requirements
• Warehousing Charges
EMI recommends technicians and installers read this
material prior to installing or servicing an EMI Split Sys-
tem. Any questions can be directed to our customer service
department at (315) 336-3716.
SYSTEM DESIGN
EMI manufactures two series of straight-cool
condensing units and limited range heat pumps that can be
matched with any corresponding size EMI-manufactured air
handler.
America Series Single Zone Outdoor Units*
• SCC: Models 9-36 (straight cool)
• CCB: Models 42-48 (straight cool)
• SHC: Models 9-36 (heat pump)
• CHD: Models 42-48 (heat pump)
America Series Multi-Zone Outdoor Units**
• MC2/MC4: 2-4 Zone (straight cool)
• MH2/MH4: 2-4 Zone (heat pump)
* Single Zone indicates that each unit has one compressor to be
connected to a single air handler.
** Multi-zone describes a unit with more than one compressor
for more than one air handler.
EMI manufactures the most extensive line of multi-
zone circuit options in the Ductless Split industry. Due to
running changes and advances, unit decoding and option
availability can become confusing.
The following will answer some Frequently Asked
Questions regarding EMI multi-zone condenser options:
• The MH unit is a limited range heat pump (see sec-
DUCTLESS SPLIT SYSTEM
Service and Technical Guide
P/N 240-2985, Rev. 1.2 [07/01]
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