INSTALLATION - R50C
Installation
1.
Verify existing wall thickness
. Distance from
condenser coil to outdoor louver varies with wall sleeve
depth. Two sets of air baffles are included with each
unit to accommodate most installation requirements.
Manufacturer offers alternate air baffle kits for unique
applications. Wall sleeve depth is required when
ordering to ensure proper baffle size.
2.
Verify Weather Angle -
A. Slide the unit into the wall sleeve.
B. If supply duct on cooling chassis does not line up
with supply vent on room cabinet, it is possible
factory installed weather angles on top and
sides will have to be reversed. This will allow
approximately 1” of adjustment for alignment with
supply vent when mounting unit to the wall sleeve.
See figures 14 and 15.
C.
Slide unit back in the wall sleeve. Verify proper fit.
3.
Install Baffles -
Slide unit out of wall sleeve.
Remove both sets of baffles from the kit bag supplied
with unit.
Install only one set of left and right side baffles on the
condenser coil. Complete following steps:
•
Choose proper fitting baffles for your application.
Verify selected baffles come in contact with outdoor
louver.
•
Verify baffles are directed inward toward center of coil.
See Figure 14.
•
Secure baffles tightly into existing holes of condenser
coil using provided screws.
4.
Install Foam Tape
— Apply 1∕2” x 1∕2” open
cell foam strips around supply air duct to ensure
all conditioned air is delivered into the room. See
Figure 15. Failure to do so results in recirculation of
conditioned air around the cabinet causing unit to short
cycle and coil to freeze.
Apply 1” x 1” open-cell foam strips to the weather
angle to prevent outside air from entering around
cooling chassis to the room from the sides and top of
the cabinet. Install between wall sleeve and chassis.
See Figure 15. Verify a solid air seal between the wall
sleeve and the chassis. Failure to do so will result in
air leakage from outdoor to indoor causing system
problems (example — coils freezing, short cycling, and
constant running of unit).
5.
Connecting optional hydronic coil controls
If hydronic heat option has been ordered, field install
the hydronic coil on the new unit. Coil with old unit
can be located in subbase, under chassis in a special
attachment, or above chassis in a special attachment.
It is necessary to know where the coil is to be located
and physical size of the coil so the new coil can be
verified if ordered for replacement. The new coil
should be installed in the same manner as the coil it is
replacing. Hydronic coils are not factory installed and
need to be ordered.
• Remove 2-position connector assembly from kit
bag supplied with unit. This will have 2 yellow wires
attached.
• Connect this 2-position connector to 2-position
connection located on bottom of control box panel.
6.
Connecting accessory field installed Aquastat.
(If ordered)
A. Remove black jumper wire located on bottom panel
of control box. This is terminated with 2-position
connector.
B. Cut jumper wire in the middle and splice the
Aquastat to jumper using 2 - crimp popcorns.
C. Place connector back into original location. Refer to
wiring diagram on unit for details.
7.
Secure chassis —
Verify all seals are in the proper
locations, correct baffles are attached to the condenser
coil, and in proper orientation. Slide unit into final
position and tighten any tie down bolts or screws as
necessary.
8.
Hard-wired units —
A. If unit is hard wired, follow instructions on page 10
to verify existing wiring and overcurrent protection.
B. Remove line cord wires from PTAC PTHP power
entrance terminals.
C. Route power supply wiring through a strain-
relief bushing. Connect leads to power entrance
terminals.
D. Secure strain-relief clamp.
E. If wiring is through conduit, insert conduit through
control box knockout and secure in place.
F. DO NOT turn on power until completing
instructions in "Final Inspection and Startup" on
page 28.
9.
DO NOT PLUG IN the line cord
, if used. Follow
instructions in "Final Inspection and Startup" page 29.
15
Made in USA
P/N 240010545, Rev. B [10/24/2014
]
