Specifications

5
THERE MAY BE ELECTRICAL WIRING BETWEEN THE
ROOF AND THE CEILING. DISCONNECT ALL POWER
SUPPLIES AND THE POSITIVE (+ ) TERMINAL FROM
THE SUPPLY BATTERY. FAILURE TO FOLLOW THIS
INSTRUCTION MAY CREATE A SHOCK HAZARD.
2) Mark a 14" x 14" square on the roof and carefully
cut the opening.
3) Using the roof opening as a guide, cut the matching
hole in the ceiling.
4) The opening created must be framed to provide
adequate support and prevent air from being drawn
from the roof cavity. Lumber 3/4" or more in
thickness must be used. Remember to provide an
entrance hole for power supplies, furnace wiring,
4-conductor telephone cable, remote sensing and
load shed options as desired.
5) The 14" opening is part of the return air system of
the Air Conditioner and must be finished in accor-
dance with NFPA Standard 501C Section 2.7.
6) Route a copper 12 AWG, with ground, 115 VAC
supply line from the fuse or circuit breaker box to
the roof opening.
a. This supply line must be located in the front
portion of the 14" opening.
b. The power supply MUST be on a separate 20
amp Time Delay Fuse or HACR Circuit Breaker.
c. Make sure at least 15" of supply wire extends
into the roof opening. This ensures easy connec-
tion at the Junction Box.
d. Wiring must comply with all National, State and
Local Wiring Codes.
e. Use a steel sleeve and a grommet or equivalent
methods to protect the wire where it passes into
the opening.
7) Route a dedicated 12 VDC supply line (18-22
AWG) from the RV's Converter or Battery to the
roof opening.
a. This supply line must be located in the front
portion of the 14" opening.
b. Make sure that at least 15" of supply wire ex-
tends into the roof opening.
c. In a multiple zone installation, this wiring is
required in only one of the 14" openings.
8) If a Remote Temperature Sensor is to be used ,
the connector end must be routed to the roof
opening of the system which it will control. Make
sure that at least 15" of the sensor cable extends
into the roof opening.
9) If a furnace is to be controlled by the system, the
two furnace thermostat leads must be routed to the
roof opening of the air conditioner that will control
it. Make sure at least 15" of the furnace thermostat
wires extend into the roof opening.
10) If an Energy Management System- EMS (load
shed) is to be used with the control, two wires must
be routed to the roof opening of the zone to be
managed. The signal required for this function is a
normally open relay contact. When the EMS calls
for the compressor to shut off, the relay contacts
should close. Make sure that at least 15" of the
EMS wires extend into the roof opening.
REGISTERS
4 MIN. — 8 MAX. (Per A/C)
14 SQ. IN. FREE AREA
PER REGISTER
14 INCH ROOF
OPENING
ROOF RAFTERS
SHORT RUN DUCT MIN. 1/3
TOTAL DUCT LENGTH
AIR CONDITIONER
VEHICLEVEHICLE
VEHICLEVEHICLE
VEHICLE
FRONTFRONT
FRONTFRONT
FRONT
FIG. 2
TOTAL OUTLET
AIR AREA MINIMUM:
17.5 sq. in. - 579 & 600 Series
21.0 sq. in. - 591, 595 & 630 & 595 Series
DUCTS MIN. MAX.
DEPTH (591,595, 630 Series) 1-1/2" 2-1/4"
(579, 600 Series) 1-1/4" 2-1/4"
WIDTH 7" — —
TOTAL LENGTH 12' 36'