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The Right Fit For Comfort
6. 1” x 1” Open cell foam strips are provided to prevent
outside air from entering around the chassis to the room
from the sides and top of the cabinet. Install between
wall sleeve and cooling chassis. It is imperative to
have a solid air seal between wall sleeve and chassis.
Failure to do so will result in air leakage from outdoor
to indoor causing system problems i.e. coils freezing,
short cycling, and constant running of unit. If installer is
in need of more foam than supplied in kit, consult fac-
tory (See Figure D5).
7. Once confi dent that all seals are the correct size and in
the proper location and the correct baffl es are attached
to the condenser coil in the proper orientation, slide
unit into fi nal position and tighten any tie down bolts or
screws as necessary.
RC21 PERFORMANCE DATA*
Unit Size
Cooling
Btuh
EERs
Fresh Air
CFM
9 9,500 10 40/35
12 11,900 10 40/35
15 14,700 9.2 40/35
18 16,900 9.1
40/35
RC21 Hydronic Heat *
Performance 104-101 (Single Row Coil)
GPM EWT (°F) Capacities Btuh P.D.
3.0
180°F Hi 16,400 4.4
180°F Lo 15,400 4.4
140°F Hi 10,300 4.6
140°F Lo 9,700 4.6
RC21 INSTALLATION INSTRUCTIONS (Continued)
Hydronic Only: Remove the 2-position connector as-
sembly from kit bag supplied with unit (this will have 2
yellow wires attached). Connect this 2-position connector
to the 2-position connection located on the bottom of the
control box panel.
To Connect Aquastat:
A. Remove the black jumper wire located on the bot-
tom panel of the control box (this is also terminated
with a 2-position connector).
B. Cut the jumper wire in the middle and splice the
aquastat to the jumper.
C. Place the connecter back into original location.
Refer to wire diagram on the unit for details.
8. Connect line cord.
9. See Final Inspection and Startup on page 20.
*Refer to the charts on page 23 for electrical and optional electric
heat specifi cations.
Figure D5
Front View
Cooling Chassis
Wall Sleeve
1x1 Foam Tape