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036-21544-001 Rev. B (1103)
2 Mitsubishi Electronics 2003
The PUGH condensing units are Heat Pump models that are
designed specifically for use with Mitsubishi Electronics PKH,
PCH, and PLH MR. SLIM indoor units of matching nominal
capacities. Models from 1.5 through 3.5 tons are available.
• QUALITY CONDENSER COILS - The coil is con-
structed of enhanced copper tube and aluminum fins.
• COIL PROTECTION - Coils are protected from dam-
age by a polymer mesh applied between the coil face
and the PVC coated steel coil guard.
• PROTECTED COMPRESSOR - The compressor is
internally protected against high pressure and temper-
ature. This is accomplished by the simultaneous oper-
ation of high and low pressure switches and a
temperature sensor that protects the compressor if
undesirable operating conditions occur. A liquid line fil-
ter-drier further protects the compressor.
• DURABLE FINISH - The cabinet is made of pre-
painted steel. The pre-treated flat galvanized steel pro-
vides a better paint to steel bond, which resists corro-
sion and rust creep. Special primer formulas and
matted desert sand finish insure less fading when
exposed to sunlight.
• LOWER INSTALLED COST - Installation time and
costs are reduced by easy power and control wiring
connections. Discharge line heat exchanger knock-
outs are provided, if required. The unit contains
enough refrigerant for matching indoor units and 25
feet of interconnecting piping. The small base dimen-
sion means less space is required on the ground or
roof.
• TOP DISCHARGE - The warm air from the top
mounted fan is blown up away from the structure and
any landscaping. This allows compact location on
multi-unit applications.
• ADVANCED CONTROL BOARD - Each unit is
equipped with an advanced electronic control board.
This board controls the function of the outdoor unit and
improves the operation and protection of the unit. The
control board also provides operational and diagnostic
information to the service technician through multiple
LED’s.
• LOW OPERATING SOUND LEVEL - The upward air
flow carries the normal operating noise up away from
the living area. The rigid top panel effectively isolates
any motor sound. Isolator mounted compressor and
the rippled fins of the condenser coil muffle the normal
fan motor and compressor operating sounds.
• LOW MAINTENANCE - Long life permanently lubri-
cated motor-bearings need no annual servicing.
• EASY SERVICE ACCESS - Fully exposed refrigerant
connections, a single panel covering the electrical con-
trols and a plug in the control box connecting the con-
denser fan, make for easy servicing of the unit.
• SECURED SERVICE VALVES - Secured reusable ser-
vice valves are provided on both the liquid and vapor
connections for ease of evacuating and charging.
• ETL LISTED - Approved for outdoor application.
• Certified in accordance with the Unitary Small Equip-
ment certification program, which is based on ARI
Standard 210/240.
DESCRIPTION AND FEATURES
1
DESCRIPTION AND FEATURES . . . . . . . . . . . . . . . . . . 2
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
STANDARD OPERATING DATA . . . . . . . . . . . . . . . 4 - 6
PERFORMANCE DATA - OPERATING
PRESSURES - COOLING . . . . . . . . . . . . . . . . . . . . 7 - 19
PERFORMANCE DATA - OPERATING
PRESSURES - HEATING. . . . . . . . . . . . . . . . . . . . 20 - 22
DIMENSIONS AND CLEARANCES . . . . . . . . . . . . . . . 23
SYSTEM CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
OPERATING PRESSURES / SUPERHEAT . . . . . 24 - 25
OPERATING RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . 26
REFRIGERANT CHARGE (R-22 0z.) ADJUSTMENT
FOR OPTIMUM PERFORMANCE. . . . . . . . . . . . . . . . . 27
CAPACITY CORRECTION FACTORS FOR
VARIOUS PIPE LENGTHS . . . . . . . . . . . . . . . . . . . . . . 28
MICROPROCESSOR CONTROL . . . . . . . . . . . . . .29 - 30
ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
REFRIGERANT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 32
PARTS BREAKDOWN . . . . . . . . . . . . . . . . . . . . . .33 - 35
NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36