11
569J***D/E/F PIPING CONNECTIONS
The 569J***D/E/F unit’s two circuits are designated Circuit 1
and Circuit 2. Circuit 1 is controlled by the thermostat’s Y1 (or
TC1) contact and will be the first circuit on and last circuit off.
Circuit 2 is controlled by the thermostat’s Y2 (or TC2) contact
and this circuit is always the “lag” circuit.
See Fig. 7 for location of Circuit 1 and Circuit 2 service valves
and field piping connections. Circuit 1 is on the right-hand side
of the service valve compartment; Circuit 2 is on the left.
When a single piece evaporator coil with two separate circuits
is connected to a 569J***D/E/F, the lower coil circuit should
be connected to the 569J***D/E/F unit’s Circuit 1 so that the
evaporator’s lower coil segment is first-on/last-off (to avoid
re-evaporation of condensate on dry lower coil segments).
Fig. 7 — 569J***D/E/F Service Valve Locations
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***D/E/F unit cannot be field-piped as a single-
circuit/tandem system.
FINAL TUBING CHECK 569J***D/E/F
Before completing the field piping connections to the
569J***D/E/F unit service valves, confirm that the suction line
to the indoor coil’s first-on/last-off circuit (and its companion
liquid line) are correctly identified as Circuit 1 use for the
569J***D/E/F unit. If a suction riser is required, it must be in
Circuit 1.
Connecting 524J to 569J***D/E/F
The 524J fan coil in sizes 12, 14 and 16 is a face-split coil design
that also has its circuits designated as 1 and 2. See Fig. 8. Note
that the lower coil segment changes as the arrangement of the
524J changes. In a vertical arrangement, the 524J unit’s lower
coil segment is segment 2; this segment should be connected to
the 569J***D/E/F 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***D/E/F unit’s Circuit 1.
Note that refrigerant suction piping should be insulated.
INSTALL FILTER DRIER(S) AND MOISTURE
INDICATOR(S)
Every unit MUST have a filter drier in the liquid line.
569J***D/E/F models require two filter driers (one in each liq-
uid line). Locate the filter drier(s) at the indoor unit, close to
the evaporator coil’s thermal expansion valve (TXV) inlets.
Fig. 8 — Typical Evaporator Coil Connections (524J)
The 569J units include one (569J***A/B/G/H) or two
(569J***D/E/F) Puron-duty filter drier(s), shipped in cartons
attached to the unit basepan (see Table 12). Remove the filter
drier(s) and prepare to install in the liquid line(s) at the evapo-
rator coil. Do not remove connection fitting plugs until ready
to connect and braze the filter drier into the liquid line position.
Installation of liquid line moisture indicating sightglass in each
circuit is recommended. Locate the sightglass(es) between the out-
let of the filter drier and the TXV inlet.
Refer to Table 13 for recommendations on refrigeration
specialties.
Table 12 — Puron-duty Filter Drier(s)
Table 13 — Refrigerant Specialties Part Numbers
524J
ARRANGEMENT
COOLING
STAGE
524J COIL
SEGMENT
CONNECT TO
569J***D/E/F
Vertical
Y1
2
Circuit 1
Y2
1
Circuit 2
Horizontal
Y1
1
Circuit 1
Y2
2
Circuit 2
CIRCUIT 1
CONNECTIONS
CIRCUIT 2
CONNECTIONS
CKT
2
CKT
1
MODEL SIZE
QTY LIQUID LINE
OD (in.)
DESICCANT
VOLUME
PART
NUMBER
REF.
569J*07A/B/G/H
1
3
/
8
8 cu in.
KH43LS091
569J*08A/B
1
1
/
2
16 cu in.
KH43LS085
569J*12A/B
1
1
/
2
16 cu in.
KH43LS085
569J*14A/B
1
5
/
8
16 cu in.
KH43LS086
569J*12D/E/F
2
3
/
8
8 cu in.
KH43LS091
569J*14D/E
2
1
/
2
16 cu in.
KH43LS085
LIQUID
LINE
SIZE
(in.)
LIQUID LINE
SOLENOID
VALVE
(LLSV)
LLSV COIL
SIGHT
GLASS
FILTER
DRIER
3
/
8
EF680033
EF680037
KM680008
Provided with
unit, see
Table 12
1
/
2
EF680035
EF680037
KM680004
5
/
8
EF680028
EF680032
KM680005
CONDENSATE DRAIN CONNECTION
CONDENSATE DRAIN
CONNECTION
SUCTION-VAPOR
CONNECTION
LIQUID LINE
CONNECTION
FIRST ON/LAST OFF = 2
VERTICAL INSTALLATION
FIRST ON/LAST OFF = 1
HORIZONTAL INSTALLATION
