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Table 6 – 569J*12-14D/E Piping Recommendations (Two-Circuit Unit)
NOTE: 569J***D/E requires TWO sets of refrigeration piping
R ---410A
Equivalent Length
Ft
m
Linear Length
Ft
m
Model
569J*12D/E
Liquid Line
Max Lift (ft)
Novation
RTPF
Suction Line
Charge (lbs) (ea circuit)
Novation
RTPF
569J*14D/E
Liquid Line
Max Lift (ft)
Novation
RTPF
Suction Line
Charge (lbs) (ea circuit)
Novation
RTPF
Legend:
Equivalent
Equivalent tubing length, including effects of refrigeration specialties devices
Length
Linear Length
Linear tubing length, feet
Liquid Line
Tubing size, inches OD.
Max Lift
Maximum liquid lift (indoor unit ABOVE outdoor unit only), at maximum permitted liquid line pressure drop
S Linear Length Less than 75 ft (23 m): Minimum 2.0° F subcooling entering TXV
S Linear Length Greater than 75 ft (23m): Minimum 0.5° F subcooling entering TXV
Suction Line
Tube size, inches OD
See highlighted: Do not use with RTPF coil model
Charge
Charge Quantity, lbs. Calculated for both liquid line sizes (where applicable), but only with larger suction line size (where
applicable)
DNU
Do Not Use (pressure drop exceeds available subcooling in this model)
NR
Not Recommended (use smaller liquid tube size)
NOTE:
For applications with equivalent length greater than 188 ft (57 m) and/0r linear length greater than 125 ft (38 m), contact
your local Bryant representative.
Suction Riser —
A suction riser condition exists when the outdoor unit is
located above the indoor (evaporator) unit and suction vapor
must flow vertically up to return to the compressor. Oil
return is a concern when the suction tube size is too large to
produce the minimum refrigerant velocity to ensure oil
return at minimum load conditions.
Check Table 7 for maximum suction tube size for 569J units
at minimum load conditions. Consider suction speed riser
(reduced tube size for vertical segment only) or double
suction riser arrangement if the proposed suction tube size
does not provide necessary minimum flowrates for this riser.
Vertical Separation (outdoor unit above indoor unit) –
Vertical elevation difference of 200 ft (60 m) is permitted
when the outdoor unit (569J***A/B or 569J***D/E) is
located above the indoor unit.
Insulate Suction Lines —
Apply closed-cell tubular insulation to all suction lines
between evaporator coil connection and 569J unit's
suction service valve.
0--- 38
38--- 75
0--- 12
12--- 23
0--- 25
25--- 50
0--- 8
8--- 15
3
3
/
/
8
8
25
50
25
50
7
7
/
/
8
8
7.1
8.1
13.3
14.3
3
3
/
/
8
8
25
50
25
50
7
7
/
/
8
8
9.7
10.7
23.0
24.0
569J***A/B
569J***D/E
Hot Gas Bypass —
Hot gas bypass, if used, should be introduced before the
evaporator. (A bypass route that also bypasses the evaporator
circuit may lead to oil trapping in the evaporator circuit
during low load conditions and then to oil slugging as
evaporator load increases.) Model 569J units do not include
a hot gas stub connection; a tee must be field-supplied and
installed in the compressor discharge line. Run the hot gas
line between outdoor unit and evaporator coil inlet. Install an
Auxiliary Side Connector at the evaporator between TXV
and distributor (follow instructions for the side connector
part). Insulate the hot gas line.
13
75--- 113
113--- 150
23--- 34
34--- 46
50--- 75
75--- 100
15--- 23
23--- 30
3
1
3
1
/
/
/
/
8
2
8
2
28
75
DNU
100
75
NR
83
100
1
1
1
/
1
/
8
8
9.6
11.9
DNU
13.8
15.8
NR
16.9
20.0
3
1
3
1
/
/
/
/
8
2
8
2
48
75
DNU
100
75
NR
54
100
1
1
1
/
1
/
8
8
14.5
DNU
16.4
27.8
NR
26.6
29.7
Table 7 –
569J Maximum Suction Pipe Size
Model:
Unit Size
07
08
12
14
12
14
150--- 188
46--- 57
100--- 125
30--- 38
3
1
/
/
8
2
DNU
99
62
125
1
1
/
8
DNU
15.8
18.1
22.0
3
1
/
/
8
2
DNU
122
45
125
1
1
/
8
DNU
18.4
27.8
31.7
Maximum Tube Size
3
1
/
8
5
1
/
8
5
1
/
8
1
2
/
8
3
1
/
8
5
1
/
8
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