Johnson Controls DSH024C Series, Установка, эксплуатация и обслуживание

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12
FORM 145.32-IOM5
ISSUE DATE: 04/08/2019
SECTION 1 – INSTALLATION
LD27694
FIGURE 3 - PACKAGED UNIT WITH COUPLINGS
Once the couplings are unscrewed, the female coupling
can be pulled away and allowed to rest in the open-
ing. No loss of refrigerant occurs due to the spring-seal
mechanism in the couplings.
Separating the Units
The evaporator and condenser sections can be separated
by performing the following procedures. These proce-
dures are for the 2–8 ton capacities only. On the 8 ton
model, unscrew all four couplings (
Figure 3
) with the
aid of a backup wrench to separate the unit.
1. For 2–5 ton models, close all of the refrigerant iso-
lation valves on the suction, liquid, and hot gas
bypass line (if applicable). Valves are not a back-
seating design. Caps are wrench tight.
2. Remove the caps and turn the valve stem clockwise
to seat the valve in the closed position.
3. For 2–5 ton models, use the valve access ports
to reclaim the refrigerant trapped in the lines be-
tween the pairs of shut-off valves.
Use a TUBING CUTTER ONLY - do not
use hacksaws to cut refrigerant tubing.
Otherwise, serious damage can occur to
refrigeration system.
4. For 2–5 ton models, cut the refrigerant line sections
between the pairs of shut-off valves.
It is recommended to make this cut where accessi-
bility is greatest - in the condensing section of the
unit. This allows the best access for reconnection
or attachment of an extended line set in the case
of a split system.
5. Remove the interconnecting wiring between the
evaporator and condenser electrical panel. Dis-
connect the wire terminations in the condenser
electrical panel, and pull the excess wire into the
evaporator panel.
6. Remove the threaded wire bushing connecting the
two electrical panels.
7. Remove the unit top-joining strip. Take care to
remove only those screws that attach the joining
strip to the evaporator and condenser cabinets.
8. Remove the two side cross-member angles.
9. Carefully pull the evaporator section away from
the condenser section. Take care not to damage
the short lengths of refrigerant tubing extending
into the condenser section.
The separated evaporator and condenser modules can
now be individually moved to the desired location for
re-assembly or separately located for split applica-
tions. Splitting units with couplings requires a mating
coupling kit. See Table 2. For split installations, the
cross member angles must be field cut for each section
length and re-attached.
TABLE 2 - FIELD SPLIT COUPLING KITS
MODEL NUMBER PART NUMBER
DSH096C***P/DSH096C***S DSH096B-SPLIT-KIT
DSH096C***P/DSH096C***S
with Hot Gas Bypass (HGBP)
DSH096B-SPLIT-HGBP
DSH120C***S DSH120B-SPLIT-KIT
DSH120C***S with HGBP DSH120B-SPLIT-HGBP
The couplings must be protected from any
foreign material, dust, or debris if they are
left uncapped for any extended period of
time.