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Electrical
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
CAUTION
Electrostatic
electronic components. Take precautions
to neutralize electrostatic charge by
touching your hand and tools to metal
prior to handling the control.
WARNING
Electric Shock Hazard. Can cause
injury or death. Unit must be properly
grounded in accordance with national and
local codes.
WARNING
Fire Hazard. Use of aluminum wire with this product may
result in a fire, causing property damage, severe injury
or death. Use copper wire only with this product.
CAUTION
. Failure to use properly sized wiring and circuit breaker
may result in property damage. Size wiring and circuit
breaker(s) per Product Specifications bulletin (EHB) and
unit rating plate.
EXTERIOR MAKE-UP BOX
(FIELD PROVIDED RIGHT SIDE)
FIGURE 46
discharge
can
affect
MAKE-UP
BOX
OUTSIDE
CABINET
Right Side
The unit is equipped with a make-up box on the left hand
side of the cabinet. A field-provided make-up box can be
installed on the exterior of the right side of the furnace to
facilitate installation. If the make-up box is moved to the
right side, clip the wire ties that bundle the wires together
and install on the outside of the cabinet. See FIGURE 46.
The excess wire must be pulled into the blower compart-
ment. Secure the excess wire to the existing harness to
protect it from damage.
Refer to FIGURE 49 for unit field wiring. See FIGURE 47
and FIGURE 48 for thermostat wiring in communicating
applications. TABLE 15 shows DIP switch and on-board
link settings for non-communicating thermostat applica-
tions.
1 - The power supply wiring must meet Class I
restrictions. Protected by either a fuse or circuit
breaker, select circuit protection and wire size
according to unit nameplate.
NOTE - Unit nameplate states maximum current draw.
See table for maximum over-current protection.
SL99DF Model
07036B, 09036C, 0904BC
09060C, 11060C
2 - Holes are on both sides of the furnace cabinet to
facilitate wiring.
3 - Install a separate (properly sized) disconnect switch
near the furnace so that power can be turned off for
servicing.
4 - Before connecting the thermostat or the power
wiring, check to make sure the wires will be long
enough for servicing at a later date. Remove the
blower access panel to check the length of the wire.
5 - Complete the wiring connections to the equipment.
Use the provided unit wiring diagram and field wiring
diagram shown in FIGURE 49 and TABLE 15. Use
18-gauge wire or larger that is suitable for Class II
rating for thermostat connections.
NOTE - Do NOT make a wire connection between
the room thermostat L terminal and the L terminal
of the SLP99DFV integrated control unless this
is a communicating thermostat installation with a
noncommunicating outdoor unit.
6 - Electrically ground the unit according to local codes
or, in the absence of local codes, according to the
current National Electric Code (ANSI/NFPA No. 70)
for the USA and current Canadian Electric Code
part 1 (CSA standard C22.1) for Canada. A green
ground
Page 33
TABLE 12
Maximum Over-Current
Protection (Amps)
15
20
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