10
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 re-
frigerant velocity to ensure oil return at minimum load conditions.
569J***A/B/G/H AND 569J***D/E WITHOUT HGBP
Check Table 11 for maximum suction tube size for 569J units
at minimum load conditions. Consider suction speed riser (re-
duced tube size for vertical segment only) or double suction
riser arrangement if the planned suction tube size does not pro-
vide necessary minimum flow-rates for this riser.
Table 11 — 569J Maximum Suction Pipe Size
569J*12F WITH OPTIONAL HOT GAS BYPASS
Special consideration for suction riser requirements must be
considered when applying this factory-installed hot gas bypass.
It is extremely important to consider the lowest possible refrig-
erant tons of refrigerant flow when hot gas bypass is function-
ing to assure proper oil return up suction risers.
Table 10 provides recommended tube sizes for model
569J*12F unit which includes the factory-installed hot gas by-
pass system on Circuit 1. The selections in this table are based
on evaluations of system minimum load operating conditions
for comfort cooling applications, with compressor saturated
suction pressure to 28°F (–2.2°C) minimum.
Table 10 includes liquid line size selections based on use of
RTPF coil option only.
Table 10 includes three different suction line size selections for
Circuit 1 based on the elevation difference conditions between
the 569J*12F unit and the evaporator coil location.
Outdoor Unit ABOVE Evaporator Coil
This installation will have at least one suction riser segment. If
the vertical elevation difference is less than 20-ft (6.1 m) linear
feet and requires only one or two segments, consider a speed
riser selection for Circuit 1; use the line marked VAPOR RIS-
ER REQUIRED; NOT GREATER THAN 20 FT (6.1 M). See
Fig. 5. Tube S is the horizontal line size; tube A is the reduced
diameter riser size.
Fig. 5 — Suction Line Piping - Speed Riser
If the vertical elevation difference is greater than 20-ft (6.1-m)
linear feet or requires more than two short lift segments, select
the Circuit 1 suction line size from Double Suction Riser lines
data under VAPOR RISER GREATER THAN 20 FT (6.1 M).
See Fig. 6. Tube S is the horizontal line size. Tube A is the re-
duced diameter riser size without bottom trap; Tube B is the
parallel riser size with bottom oil trap.
Fig. 6 — Suction Line Piping - Double Riser
Outdoor Unit BELOW Evaporator Coil and No Vertical Riser
Segments
Select Circuit 1 suction line size from NO VAPOR RISER line.
Circuit 2 Suction Line
Because there is no hot gas bypass system in Circuit 2, no spe-
cial riser selections are necessary. Select Circuit 2 suction line
from bottom line for all 569J*12F installations.
Vertical Separation (outdoor unit above indoor unit)
Vertical elevation difference of 200 ft (60 m) is permitted when
the outdoor unit (569J***A/B/G/H or 569J***D/E/F) is locat-
ed above the indoor unit.
Step 6 — Complete Refrigerant Piping
Connections
PROVIDE SAFETY RELIEF
If local codes dictate an additional safety relief device, purchase
locally and install locally. Installation will require the recovery
of the factory shipping charge before the factory tubing can be
cut and the supplemental relief device is installed.
Model 569J***D/E/F has two separate refrigeration systems. If
required, each circuit will require a field-supplied/installed
supplemental relief device.
CHECK 569J MODEL WITH EVAPORATOR COIL
CONNECTIONS
Confirm before installation of unit that the evaporator coil con-
nections are consistent with this 569J model. See Table 3 on
page 3.
INSULATE SUCTION LINES
Apply closed-cell tubular insulation to all suction lines
between evaporator coil connection and 569J unit’s suction
service valve.
MODEL
UNIT SIZE
MAXIMUM TUBE SIZE
569J***A/B
07
1
3
/
8
08
1
5
/
8
12
1
5
/
8
14
2
1
/
8
569J***G/H
07
1
1
/
8
08
1
1
/
8
569J***D/E
12
1
3
/
8
14
1
5
/
8
569J*12F
12
See Table 10
CONDENSING
UNIT
20-FT (6.1 M)
MAX
A
A - Suction Riser
With
Trap
LEGEND
S - Suction Line to Condensing Unit
S
IMPORTANT: DO NOT BURY REFRIGERANT LINES.
IMPORTANT: A refrigerant receiver is not provided with the
unit. Do not install a receiver.
FROM
EVAPORATOR
A
A - Suction Riser
Without
Trap
B - Suction Riser
With
Trap
S - Suction Line to Condensing Unit
LEGEND
B
S
S
Содержание 569J 07A Series
Страница 4: ...4 Fig 3 569J Base Unit Dimensions ...
Страница 40: ...40 APPENDIX B WIRING DIAGRAMS CONT Fig B Single Circuit Single Stage Wiring Diagram 6 10 Ton 460 3 60 Units ...
Страница 41: ...41 APPENDIX B WIRING DIAGRAMS CONT Fig C Single Circuit Single Stage Wiring Diagram 6 10 Ton 575 3 60 Units ...
Страница 43: ...43 APPENDIX B WIRING DIAGRAMS CONT Fig E Single Circuit Two Stage Wiring Diagram 6 Ton 575 3 60 Units ...
Страница 44: ...44 APPENDIX B WIRING DIAGRAMS CONT Fig F Single Circuit Two Stage Wiring Diagram 7 5 Ton 208 230 3 60 Units ...
Страница 45: ...45 APPENDIX B WIRING DIAGRAMS CONT Fig G Single Circuit Two Stage Wiring Diagram 7 5 Ton 460 3 60 Units ...
Страница 46: ...46 APPENDIX B WIRING DIAGRAMS CONT Fig H Single Circuit Two Stage Wiring Diagram 7 5 Ton 575 3 60 Units ...
Страница 47: ...47 APPENDIX B WIRING DIAGRAMS CONT Fig I Dual Circuit Two Stage Wiring Diagram 10 12 5 Ton 208 230 3 60 Units ...
Страница 48: ...48 APPENDIX B WIRING DIAGRAMS CONT Fig J Dual Circuit Two Stage Wiring Diagram 10 12 5 Ton 460 3 60 Units ...
Страница 49: ...49 APPENDIX B WIRING DIAGRAMS CONT Fig K Dual Circuit Two Stage Wiring Diagram 10 12 5 Ton 575 3 60 Units ...
Страница 53: ...53 APPENDIX C LOW AMBIENT OPTION CONT Fig N Wind Baffles D K J H G F E C B A ...
