9
•
Before connecting piping between the indoor units and
the MDC, remove the brazed cap as shown in Fig. 8.
Depending on the size of the connecting pipe, the brazed
cap may be left on or removed
.
Fig. 8 —Removing the Brazed Cup
• Table 4 shows the piping diameters to use when
connecting the indoor units and the MDC.
• Table 5 and 6 show how to connect the liquid and gas
lines to the indoor units.
• Table 7 shows the number of indoor units that can be
connected to the MDC and sub MDC.
Table 4 — Piping Diameter Between MDC and
Indoor Units
Table 5 — Connecting Gas Pipes to the Indoor Unit
Table 6 — Connecting Liquid Pipes to the Indoor
Unit
Table 7 — Combination Table
INDOOR UNIT (kBtu/h)
LIQUID SIDE (in.) GAS SIDE (in.)
5, 7, 9, 12, 15
1
/
4
1
/
2
18, 24, 30, 36, 48, 54
3
/
8
5
/
8
72
3
/
8
7/8
96
3
/
8
7
/
8
a
c
b
LEGEND
a
—
Cut Here
b —
Brazed Cap
c
—
MDC Unit
INDOOR
UNIT
CAPACITY
(kBtu/h)
CONNECTION DIAGRAM
5, 7, 9, 12, 15
18, 24, 27, 30,
36, 48, 54
LEGEND
a
—
MDC Unit
b —
Pipe Accessory
c
—
Pipe
1
/
2
d —
Pipe
5
/
8
INDOOR UNIT
CAPACITY
(kBtu/h)
CONNECTION DIAGRAM
5, 7, 9, 12, 15
18, 24, 27, 30,
36, 48, 54
LEGEND
a
—
MDC Unit
b —
Pipe Accessory
c
—
Pipe
1
/
4
d —
Pipe
3
/
8
b
c
a
d
a
b
c
a
d
a
MDC IMAGE
MAIN MDC
MAX NUMBER
OF INDOOR
UNITS
CONNECTED
TO MAIN MDC
MAX NUMBER
OF SUB MDC
MAX NUMBER
OF INDOOR
UNITS
CONNECTED
TO SUB MDC
MAX CAPACITY OF TOTAL INDOOR UNIT
(kBtu/h)
MAIN MDC
SUB MDC (1)
SUB MDC (2)
006
12
2
24
324
126
168
008
16
010
20
016
32
016L
32
504
