P
Applies to only 2–8 ton models. The unit comes assembled as a packaged unit and
factory charged with R-410A refrigerant.
P is ideal for installations where the unit is installed as a packaged system. While moving
the equipment into position or during installation, no separation is required.
S
The unit is factory-split and factory-charged with R-410A refrigerant. The unit comes
with refrigerant shut-off/coupling valves that hold charge in both the condenser and
evaporator sections.
S is ideal for installations where the unit is installed as a packaged system. Separate
evaporator and condenser sections are required during installation to move the
equipment through tight spaces (for example, hallways or elevators).
Both evaporator and condenser sections contain R-410A refrigerant.
N
The unit is factory-split with a nitrogen-holding charge only. No refrigerant shut-off/
coupling valves are included.
DANGER
Factory nitrogen-holding charge is 200 psig. This pressure must be released from the
evaporator and condenser section BEFORE cutting any refrigerant lines for installation.
N is for installations where the unit is installed as a split system. Separate condenser and
evaporator sections facilitate moving the equipment into position.
Unit mounting
Flanges for all duct connections, corner securing brackets, and refrigerant tubing couplings (S
cabinet configurations only) ship in the condensing section of the unit for field installation. Duct
flanges for evaporator return are incorporated into the filter rack.
Before assembling and piping the units, remove the tiedown straps and brackets from the
refrigerant piping and couplings. See Figure 1 (8 and 10 ton models are shown).
11
Model DSH024C–120C Horizontal R-410A Air Conditioning Units C-Generation Smart Equipment Controller
Johnson Controls
