Lennox ECB38 Series User Manual

Page 5
1 - Install the circuit breaker on the air handler deck
ange as illustrated in gure 4. Use the provided six
screws to secure the circuit breaker.
NOTE - When applied in the downow position, the circuit
breakers must be rotated to the UP position. See gure 6
and follow the procedure below:
A - Disconnect power to the unit if present.
B - Remove the screw and slide the breakers off the
mounting rail.
NOTE - You may need to remove the wire tie closest to
the circuit breaker to allow rotation.
C - Rotate the circuit breaker 180º.
D - Slide the circuit breaker back on the rail and secure
in place with previously removed screw.
IN DOWNFLOW APPLICATIONS, CIRCUIT BREAKERS MUST BE
ROTATED 180 TO THE UP POSITION.
CIRCUIT BREAKER
MOUNTING SCREW
CIRCUIT BREAKER
BRACKET
CIRCUIT
BREAKERS
BLOWER
DECK
(REMOVE THE SCREW AND SLIDE THE
BREAKERS OFF MOUNTING RAIL.
ROTATE BREAKERS 180
AND SLIDE
BACK ON RAIL. SECURE WITH SCREW.)
NOTE - THE NUMBER OF CIRCUIT
BREAKERS USED IS DEPENDANT
ON THE SIZE OF THE ECB38 UNIT.
FIGURE 6. Typical Electric Heat Section
with Circuit Breakers
Circuit Breaker Cover Installation
If the air handler is installed in an unconditioned space,
the provided circuit breaker cover must be installed.
1 - Use isopropyl alcohol to clean the surface that the
circuit breaker cover will be attached to.
FIGURE 7. Circuit Breaker Location
2 - Remove paper backing from seal around perimeter
of circuit breaker cover (gure 8).
CIRCUIT BREAKER COVER (BACKSIDE)
REMOVE PAPER BACKING FROM FOAM SEAL
FIGURE 8. Remove Paper Backing
3 - Run a bead of clear silicone around the perimeter of
the circuit breaker cover to seal any gaps between
the cabinet access door and the circuit breaker
cover.
4 - Position the breaker cover over the air handler
circuit breaker opening (gure 9).
CIRCUIT BREAKER COVER
FIGURE 9. Circuit Breaker Cover Installation
IMPORTANT
Conrm air tight seal between breaker cover and air
handler access panel. Apply a thin silicone bead to the
adhesive back seat to ensure air tight seal.
Failure to seal circuit breaker cover will allow warm moist
air to be pulled into control panel which can create
condensation to form on the circuit breaker and other
electrical components within the control panel.
Discharge Air Temperature Sensor
The Air Handler Control (AHC) has two screw terminals
marked Discharge Air Sensor. The sensor is REQUIRED
for EVENHEAT operation, is eld-mounted and must be
ordered separately (Lennox Catalog # 88K38).
The air handler control reads the discharge air tempera-
ture sensor and initiates the following actions:
• In EVENHEAT mode the control turns ON or OFF the
electric heating elements during the heat demand to
maintain a specied temperature range at the discharge
air sensor.

Lennox ECB38 Series Specifications

General

Brand	Lennox
Model	ECB38 Series
Category	Heat Pump
Language	English