Bryant 569J Installation, Start-Up And Service Instructions Manual page 14

Refer to Hot Gas Bypass line sizing tables for appropriate
size. Contact your Bryant representative for a copy of
these tables.
569J***D/E: Generally only one hot gas bypass system
will be applied on a two-circuit unit. Connect the hot gas
bypass system to Circuit 1 (first-on/last-off, connected to
the evaporator coil's bottom circuit).
569J***D/E Piping Connections —
The 569J***D/E 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. 5 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, the lower coil circuit
should be connected to the 569J***D/E 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).
CKT
2
CKT
1
Fig. 5 - - 569J***D/E 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.
569J***D/E unit cannot
single-circuit/tandem system.
Connecting 524J to 569J***D/E: 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. 6. Note that the
lower coil segment changes as the arrangement of the 524J
changes. In a vertical arrangement, the 524J's lower coil
segment is segment 2; this segment should be connected to
the 569J***D/E's Circuit 1. In a horizontal arrangement, the
524J's lower segment is now segment 1; this segment should
be connected to the 569J***D/E's Circuit 1.
Note that refrigerant suction piping should be insulated.
Circuit 1
Connections
Circuit 2
Connections
C10912
be field-piped as a
524J Cooling
Arrangement Stage
Y1
Vertical
Y2
Y1
Horizontal
Y2
1
2
FIRST ON/LAST OFF = 2
VERTICAL INSTALLATION
1
FIRST ON/LAST OF F = 1
HORIZONTAL INSTALLATIO N
Fig. 6 - - 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***D/E 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.
569J units include one
(569J***D/E) Puron-duty filter drier(s), shipped in cartons
attached to the unit basepan. Remove the filter drier(s)
and prepare to install in the liquid line(s) at the evaporator
coil. Do not remove connection fitting plugs until ready to
connect and braze the filter drier into the liquid line
position.
Table 8 – Puron-duty Filter Drier(s)
Liquid
Model-Size Qty
Line OD
3
569J*07A/B 1 / -in
8
1
569J*08A/B 1 / -in
2
1
569J*12A/B 1 / -in
2
5
569J*14A/B 1 / -in
8
3
569J*12D/E 2 / -in
8
1
569J*14D/E 2 / -in
2
14
524J Coil Connect to
Segment 569J***D/E
2 Circuit 1
1 Circuit 2
1 Circuit 1
2 Circuit 2
2
C10071
(569J***A/B) or two
Desiccant Part
Volume Number Ref
8 cu. in. KH43LG091
16 cu. in. KH43LG085
16 cu. in. KH43LG085
16 cu. in. KH43LG086
8 cu. in. KH43LG091
16 cu. in. KH43LG085