E-mail: [email protected]
Made in Rome, New York, USA
10
MC4/MH4 MULTI-ZONE
High Efficiency Condensing Unit
Limited Range Heat Pump
PRODUCT DESCRIPTION
The America Series high efficiency MC4 Multi-Zone Air
Conditioners and MH4 Heat Pumps may contain 2, 3, or 4
compressors and low voltage wiring circuits for connection
to 2, 3, or 4 indoor evaporators. Each zone is independent
and no mixing of refrigerant is required. This manual
pertains to the outdoor section installation of the MC4 air
conditioner or MH4 heat pump with standard features.
Check to be certain the included equipment is as ordered
and that the voltage is correct for the power supply before
attempting installation.
Backup electric heat is highly recommended in the
evaporator with heat pump application. The MH4 will
operate in heating down to 35
°
F outdoor temperature,
at which point it will shut down and initiate change-
over to electric heat only.
With cooling applications only, low ambient option should
be specified for the unit to be supplied if the system will
be asked to cool at outdoor temperature below 60
°
F.
EMI accomplishes low-ambient operation on MC4/MH4
condensers by cycling the condenser fan. This will in
turn maintain a constant low side pressure and keep
the air handler away from frost-up.
Included in the low ambient option
for the 9,000, 12,000 and 15,000 Btu
circuits, is a crankcase heater. This
will offer protection against cold start
situations, thus prolonging the life of
the compressor.
NOTE:
The crankcase heater is
installed when the low ambient
control option is selected, and with
09-15K heat pumps.
For installation of the indoor unit and
start-up of the system, please refer to
the
appropriate installation manual for
your indoor product to complete the
installation.
INSTALLATION OF MC4/MH4 MULTI-ZONE
REFRIGERANT CHARGE TABLE FOR MC4/MH4
CONDENSER
CAPACITY
EVAPORATOR
PAIRING
LINE
CHG/FT
LINE
LENGTH
LINE
ADJUST
FACTORY CHARGE
SYSTEM TOTAL
MC4
MH4
MC4
MH4
09
CHP 12
FHP 12
WHP 12
TBH 12
CAH 12
CNR 12
.25 OZ.
10
25
50
3 OZ.
6 OZ.
13 OZ.
26.5 OZ.
44 OZ.
29 OZ.
32 OZ.
39 OZ.
47 OZ.
50 OZ.
57 OZ.
12
CHP 12
FHP 12
WHP 12
TBH 12
CAH 12
CNR 12
.25 OZ.
10
25
50
3 OZ.
6 OZ.
13 OZ.
29.5 OZ.
42 OZ.
32 OZ.
35 OZ.
42 OZ.
45 OZ.
48 OZ.
55 OZ.
15
CHP 15
FHP 15
WHP 18
CAH 24
.25 OZ.
10
25
50
3 OZ.
6 OZ.
13 OZ.
43.5 OZ.
52 OZ.
46.5 OZ.
49.5 OZ.
56.5 OZ.
55 OZ.
58 OZ.
65 OZ.
18
CHP 24
FHP 24
WHP 18
TBH 24
CAH 24
.56 OZ.
10
25
50
6 OZ.
14 OZ.
28 OZ.
35 OZ.
41 OZ.
41 OZ.
49 OZ.
63 OZ.
47 OZ.
55 OZ.
69 OZ.
24
CHP 24
FHP 24
WHP 30
TBH 24
CAH 24
.56 OZ.
10
25
50
6 OZ.
14 OZ.
28 OZ.
50 OZ.
44 OZ.
56 OZ.
64 OZ.
78 OZ.
50 OZ.
58 OZ.
72 OZ.
30
CHP 30
FHP 30
WHP 30
CAH 36
.56 OZ.
10
25
50
6 OZ.
14 OZ.
28 OZ.
64 oz.
68 oz.
70 OZ.
78 OZ.
92 OZ.
74 OZ.
82 OZ.
96 OZ.
IMPORTANT NOTES:
1. To find the charge adjustment and system charge for any evaporator and tubing length:
Line Adjustment = (Line Charge/FT) x Line Length
System Total = Factory Line Adjustment
2. Round to the nearest ounce and allow for gauges and hoses.
