Install Thermostat - Lennox Elite SPB H4 Series Installation Instructions Manual

STEP 5 -- ELECTRICAL -- Circuit Sizing and Wire Routing
In the U.S.A., wiring must conform with current local codes and the
current National Electric Code (NEC). In Canada, wiring must con­
form with current local codes and the current Canadian Electrical
Code (CEC).
Refer to the furnace or air handler installation instructions for addi­
tional wiring application diagrams and refer to unit nameplate for
minimum circuit ampacity and maximum overcurrent protection
size.
24VAC TRANSFORMER
Use the transformer provided with the furnace or air handler for
low‐voltage control power (24VAC - 40 VA minimum).
WARNING
Electric Shock Hazard. Can cause
injury
grounded in accordance with national
and local codes.
Line voltage is present at all com-
ponents when unit is not in operation
on units with single‐pole contactors.
Disconnect all remote electric power
supplies
panel. Unit may have multiple power
supplies.
1
SIZE CIRCUIT AND INSTALL DISCONNECT SWITCH
Refer to the unit nameplate for minimum circuit ampacity, and
maximum fuse or circuit breaker (HACR per NEC). Install power
wiring and properly sized disconnect switch.
MAIN FUSE BOX/
BREAKER PANEL
DISCONNECT
SWITCH
NOTE - Units are approved for use only with copper conductors.
Ground unit at disconnect switch or connect to an earth ground.
or death. Unit must
before opening access
If unit is equipped with a crankcase heater, it should
be energized 24 hours before unit start-up to pre­
vent compressor damage as a result of slugging.
ELECTROSTATIC
DISCHARGE
be
(ESD)
Precautions and
Procedures
2

INSTALL THERMOSTAT

Install room thermostat (ordered separately) on an inside wall
approximately in the center of the conditioned area and 5 feet
(1.5m) from the floor. It should not be installed on an outside wall
or where it can be affected by sunlight or drafts.
THERMOSTAT
5 FEET
NOTE - 24VAC, Class II circuit connections are made in the control
panel.
FIGURE 11
Page 11
IMPORTANT !
CAUTION
Electrostatic discharge can affect
electronic components. Take care
during unit installation and service
to protect the unit's electronic con-
trols. Precautions will help to avoid
control exposure to electrostatic
discharge by putting the unit, the
control and the technician at the
same electrostatic potential. Touch
hand and all tools on an unpainted
unit surface before performing any
service procedure to neutralize
electrostatic charge.
(1.5M)
SPB*H4SERIES