36
IM 738-2
Mechanical Installation:
RPS/RDT Factory Split at Condensing Unit
Phase II. Reconnect refrigerant piping
All refrigerant piping required to reconnect the two sections is
provided so when the piping closures are cut off, piping from
the air handler and condenser sections lines up.
1
Connect piping using field-supplied couplings.
2
As with RFS/RCS units, both sections of the RPS/RDT
split-at-condenser unit ship from the factory with a holding
charge. Before removing the piping closures, inspect the
unit for line breakage or loosening of fittings.
3
Perform pressure testing as described in the “Leak Testing”
section on page 39.
4
Perform evacuation, charging the system, and refrigerant
charge requirements for the split-at-condenser unit per
procedures on page 39.
Note:
Use Tables 13 to 16 on pages 40 to 41 to determine
refrigerant charge requirements for the RPS/RDT
split-at-condenser. Because no field-installed refrigerant
piping is required, the total charge per circuit is the sum
of the base R-22 charge and the DX coil charge.
Figure 46. RFS/RCS 015 to 030 refrigerant piping connections
Note:
RFS units with front discharge do NOT include refrigerant piping to the DX coil. Field piping is required.
Figure 47. RFS/RCS 036 and 040 refrigerant piping connections
Note:
RFS units with front discharge do NOT include refrigerant piping to the DX coil. Field piping is required.
Table 10: Connection sizes and locations, Figures 46 and 47
Component circuit
Connection sizes
Connection locations
015C
020C
025C
030Cto
040C
RFS 015 to 030
RCS 015 to 030
RFS 036 and 040
RCS 036 and 040
X (in.)
Y (in.)
X (in.)
Y (in.)
X (in.)
Y (in.)
X (in.)
Y (in.)
S1
Suction line
Ckt.1
1 1/8
1 1/8
1 5/8
1 5/8
9.00
5.70
67.60
6.25
8.25
5.70
59.50
19.30
S2
Suction line
Ckt.2
1 3/8
1 5/8
1 3/8
1 5/8
14.00
5.70
28.00
6.25
13.25
5.70
34.60
19.30
L1
Liquid line
Ckt.1
5/8
5/8
7/8
7/8
56.00
32.00
75.00
6.25
79.00
25.00
70.50
25.00
L2
Liquid line
Ckt.2
7/8
7/8
7/8
7/8
7.60
28.00
21.00
6.25
15.00
25.00
23.50
25.00
HG1
HGBP line
Ckt.1
7/8
7/8
7/8
7/8
52.00
10.00
60.80
6.25
67.00
6.70
64.60
6.60
HG2
HGBP line
Ckt.2
7/8
7/8
7/8
7/8
36.00
16.00
35.50
6.25
32.00
6.70
29.50
6.00
H G
H G
S
S
L
L
X
Y
L
H G
H G
S
S
X
Y
L
L
H G
H G
S
S
X
Y
L
L
H G
H G
S
S
X
Y
L
Summary of Contents for RDT-135c
Page 131: ...IM 738 2 129...
