Lennox Signature Collection XP15 Installation Instructions Manual page 8

Table 2. Wire Run Length
Wire Run Length AWG # Insulation Type
less than 100' (30m) 18 color-coded, temperature
more than 100' (30m) 16 rating 35°C minimum
1. Install room thermostat (ordered separately) on an
inside wall approximately in the center of the area and
5 feet (1.5 m) from the floor. Do not install on an outside
wall or where sunlight, drafts or vibrations affect it.
2. Install low voltage wiring from outdoor to indoor unit
and from thermostat to indoor unit as illustrated in
figure 14.
3. Install line voltage power supply to unit from a properly
sized disconnect switch as illustrated in figure 15.
4. Ground unit from ground lug as illustrated in figure 15
to unit disconnect switch, or to an earth ground.
LI _._
z_
RTI$
AMBIENT
SENSOR
@
R721 DEFROST
COIL
SENSOR
S4HIGH
PRESSURE
SWITCH
$87 LOW
PRESSURE
SWITCH
©
LI
REVERSING
VALVE
©
LZ_
OMPRESSOR
CONTACTOR
54O
AI32
BI
HRI
A
w
AI32
A
EQUIPMENT
GROUND
COMPRESSOR
CONTACTOR
BLACK
TBI
(W5_
(W8
"-(v _
G
©
@
CB31MV
CBX32MV
A2 SIGNATURE
81M2B
TWISTEO
PAIR
•
I
A NOTE
FOR USE WITH COPPER CONDUCTORS ONLY.
REFER TO UNIT RATING PLATE FOR
MINIMUM CIRCUIT AMPACITY AND
MAXIMUM OVER CURRENT PROTECTION SIZE
A REFER TO COMPRESSOR N UNIT
FOR ACTUAL TERMINAL mRmANGEMENT.
Z_ WARNING
ELECTRIC SHOCK HAZARD,CAN
CAUSE
INJURY
OR DEATH.UNIT MUST BE GROUNDED IN
ACCOROANCE WITH NATIONAL AND LOCAL CODES.
A RTI4 SENSOR, OUTDOOR TEMP (OPTIONAL)
LINE VOLTAGE FIELD INSTALLED
CLASS II VOLTAGE FIELD INSTALLED
Figure 14. Typical Low-Voltage Field Wiring
GROUND
208-230/60/1
L1
L2
K1-1 COMPRESSOR CONTACTOR
GROUNDLUG
CONTROLBOX _'-
CONTACTOR
DEFROST CONTROL
BOARD (DCB)
-''_/ L_)NNN TOoXR t LYs'< oTE_ OPERATION
"__ _[3_/ _
CAPACITOR
WARNING! - ELECTRIC SHOCK HAZARD. Can cause INJURY or DEATH. Unit must be grounded in accordance with national and local codes.
NOTE - For use with copper conductors only. Refer to unit rating plate for minimum circuit ampacity and maximum over-current protection size.
Figure 15. Typical High-Voltage Field Wiring (Unit Panel)
505328M 04/08
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