IM 738-2
33
Mechanical Installation:
RPS/RDT Factory Split at Condensing Unit
RPS/RDT Factory Split at Condensing Unit
Field reassembly of an RPS/RDT unit that has shipped split at
the condenser takes place in three phases: (1) setting the
sections and mechanically recoupling the cabinet,
(2) reconnecting refrigerant piping, and (3) reconnecting
power and control wiring.
Phase I. Set sections and reassemble cabinet
1
Before setting sections together, remove top cap on air
handler section and wire cover on condensing section. See
Figure 42. Discard wire cover.
2
Remove piping cover and discard. Reinstall screws in holes
to prevent water leakage.
3
Loosen piping brackets and clamps on both sections so
refrigerant lines can be moved out of the way to prevent
interference and damage as the sections are set together.
See Figure 42.
4
Physically rig the air handler section into place.
5
After air handler is installed, remove lifting bracket and
adjacent bolts on air handler unit (see Figure 42) and save
for step 7. Discard lifting bracket.
If unit is post-and-rail mounted on a structural beam that
runs the full length of the unit, leave bolts and lifting
brackets in place.
6
On condenser unit, remove bolts adjacent to lifting bracket
and save for step 12.
Figure 42. RPS/RDT split at condensing unit reassembly, Steps 1–6
Note: RFS units with front discharge do NOT include refrigerant piping to the DX coil. Field piping is required.
Step 1: Remove top cap
and save for step 10.
RFS air
handler unit
Step 3: Loosen piping
clamps and move pipes
to prevent piping
interference during
reassembly (suction,
liquid, and hot gas
bypass lines).
Step 2: Remove piping cover
and discard. Reinstall screws
to prevent water leakage.
Step 6: Remove bolt
and save for step 7.
Step 5: After main unit is installed,
remove lifting bracket on both sides
and discard. Save bolts for step 7.
Step 1: Before units are assembled,
remove wire cover and discard.
Step 6: Remove bolt
and save for step 12.
RCS
condensing
unit
