Table of Contents
Advertisement
INSTALLATION INSTRUCTIONS
Using the roof opening as a guide, cut the match-
ing hole in the ceiling.
The opening created must be framed to provide
adequate support and prevent air from being
drawn from the roof cavity. Framing stock 3/4"or
more in thickness must be used. Remember to
provide an entrance hole for power supplies,
thermostat communication cable, and furnace
wiring (if applicable) at the front of the opening.
See (FIG. 3).
FIG. 3
Good-Rafters
Do Not Cut Roof
Supported By
Structure Or
Cross Beams
Rafters
3/4" Min.
Leave Access For
Power Supply Wiring
C.
Wiring Requirements
1. R oute a copper, with ground, 120 Vac supply
wire from the time delay fuse or circuit breaker
box to the roof opening. Use a listed/certified
non metallic - sheathed single strand cable. See
"A. Table - Unit Data" on page (4).
a. This supply wire must be located in the front
portion of the roof opening.
b. The power MUST be on an appropriately
sized separate time delay fuse or circuit
breaker. See "A. Table - Unit Data" on page
(4).
c. Make sure that at least 15" of supply wire
extends into the roof opening. This insures
an easy connection at the junction box.
d. Protect the wire where it passes into the
opening with approved method.
Good Location
Between Roof
Rafters
Frame Opening So It
Won't Collapse When
Bolting Down Unit
15" Min. At
Front Of
Opening
2. Route a dedicated 12 Vdc supply wire (18-22)
AWG) from the boat converter (filtered side) or
battery to the roof opening.
3. Route a 3 conductor communication cable, 18
to 22 AWG, from the roof opening to the Liq-
uid Crystal Display Single Zone (hereinafter
referred to a LCD SZ) thermostat mounting lo-
cation. Make sure that at least 15" of the wire
extends into the roof opening and 6" extends
from the wall at the thermostat mounting loca-
tion. See "D. Choosing Thermostat Location" on
page (6).
4. If system includes a gas furnace, route two 18
gauge thermostat wires from the furnace to the
roof opening of the unit that will control it. If more
than one furnace is to be used, route the second
set of thermostat wires to the second unit. Make
sure that at least 15" of wire extends into the
opening.
D.
Choosing Thermostat Location
The proper location of the thermostat is very impor-
tant to ensure that it will provide a comfortable boat
temperature. Observe the following rules when se-
lecting a location.
1. Locate the thermostat 54" above the floor.
2. Install the thermostat on a partition, not on an
outside wall.
3. NEVER expose the thermostat to direct heat
from lamps, sun or other heat producing items.
4. Avoid locations close to doors that lead outside,
windows, or adjoining outside walls.
5. Avoid locations close to supply registers and the
air from them.
E.
Thermostat
Communication Cable Installation
W ire colors listed for the communication ca-
ble (3 conductor cable) match the wire colors
in the unit wire harness and the wire harness
at the LCD SZ electronic control box. Avail-
able wire colors may vary.
1. Remove the cover from the LCD SZ thermostat.
Depress tab on bottom of thermostat and sepa-
rate it from the base.
2. Insert the previously run communication cable
(3 conductor cable) through the hole in the base
assembly.
3. Cut back the outer cable shield approximately 3
inches and strip 1/4" insulation from each wire.
4. Mount the thermostat level on the wall using the
screws provided.
5. Make the following connections to the thermo-
stat. See (FIG. 4).
6
&
Thermostat
Advertisement
Table of Contents
