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CKT
2
CKT
1
CKT
1
Fig. 8 — 569J***T/U Service Valve Locations
When a single piece evaporator coil with two separate circuits
is connected to a 569J***T/U, the lower coil circuit should be
connected to the 569J***T/U unit's Circuit 1 so that the evapo-
rator's lower coil segment is first-on/last-off (to avoid re-
evaporation of condensate on dry lower coil segments).
Plan the Circuit 1 and Circuit 2 tubing segments carefully,
mark each segment and check constantly as piping systems are
assembled to avoid piping errors.
The 569J***T/U unit cannot be field-piped as a single-
circuit/tandem system.
FINAL TUBING CHECK — 569J***T/U
Before completing the field piping connections to the
569J***T/U unit service valves, confirm that the suction line to
the indoor coil's first-on/last-off circuit (and its companion liq-
uid line) are correctly identified as Circuit 1 use for the
569J***T/U unit. If a suction riser is required, it must be in
Circuit 1.
Connecting 524J to 569J***T/U
The 524J fan coil in sizes 16, 25 and 28 is a face-split coil de-
sign that also has its circuits designated as 1 and 2. See
Table 10 and Fig. 9. Note that the lower coil segment changes
as the arrangement of the 524J changes. In a vertical arrange-
ment, the 524J unit's lower coil segment is segment 2; this seg-
ment should be connected to the 569J***T/U unit's Circuit 1.
In a horizontal arrangement, the 524J unit's lower segment is
now segment 1; this segment should be connected to the
569J***T/U unit's Circuit 1.
Note that refrigerant suction piping should be insulated.
Table 10 — 524J Arrangement Details
524J
COOLING
ARRANGEMENT
STAGE
Y1
Vertical
Y2
Y1
Horizontal
Y2
CKT
2
Circuit 2
Connections
Circuit 1
Connections
524J COIL
CONNECT TO
SEGMENT
569J***T/U
2
Circuit 1
1
Circuit 2
1
Circuit 1
2
Circuit 2
Vertical Installation
Coil Segment 1
Coil Segment 2
First On/Last Off = 2
Horizontal Installation
Condensate Drain Connection
Fig. 9 — Typical Evaporator Coil Connections (524J)
INSTALL FILTER DRIER(S) AND MOISTURE
INDICATOR(S)
Every unit MUST have a filter drier in the liquid line.
569J***T/U models require two filter driers (one in each liquid
line). Locate the filter drier(s) at the indoor unit, close to the
evaporator coil's thermal expansion valve (TXV) inlets.
The
569J
units
include
(569J***T/U) Puron-duty filter drier(s), shipped in cartons at-
tached to the unit basepan (see Table 11). Remove the filter dri-
er(s) and prepare to install in the liquid line(s) at the evaporator
coil. Do not remove connection fitting plugs until ready to con-
nect and braze the filter drier into the liquid line position.
Installation of liquid line moisture indicating sight glass in each
circuit is recommended. Locate the sight glass(es) between the
outlet of the filter drier and the TXV inlet.
Refer to Table 12 for recommendations on refrigeration
specialties.
Table 11 — Puron-duty Filter Drier(s)
LIQUID LINE
MODEL SIZE QTY
OD (in.)
569J*16A/B
1
569J*25A/B
1
569J*16T/U
2
569J*25T/U
2
569J*28T/U
1
12
Liquid Line
Connection
Suction-Vapor
Connection
Condensate Drain
Connection
Coil Segment 2
Coil Segment 1
First On/Last Off = 1
one
(569J***A/B)
DESICCANT
NUMBER
VOLUME
5/8
30 cu in.
KH43LS087
5/8
30 cu in.
KH43LS087
1/2
8 cu in.
KH43LS085
1/2
16 cu in.
KH43LS085
1/2
16 cu in.
KH43LS085
or
two
PART
REF.
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