Lennox ML296UHV Series Unit Information

Page 14
POWER
CONNECTOR J48
CONTROL
CONNECTOR J49
GenTeq HARNESS CONNECTORS
J49
PIN 1 ‐ C1
PIN 2 ‐ W / W1
PIN 3 ‐ C2
PIN 4 - Delay
PIN 5 ‐ Cool
PIN 6 ‐ Y1
PIN 7 ‐ Adjust
PIN 8 ‐ Out
PIN 9 ‐ O
PIN 10 ‐
DS(PWM)
PIN 11 ‐ Heat
PIN 12 ‐ R
PIN 13 ‐ EM / W2
PIN 14 ‐ Y / Y2
PIN 15 ‐ G
PIN 16 ‐ Out +
J48
PIN 1 ‐ Jumper PIN 1 to PIN2 for 120VAC line input only.
PIN 2 ‐ Jumper PIN 1 to PIN2 for 120VAC line input only.
PIN 3 ‐ Ground
PIN 4 ‐ AC Line
PIN 5 ‐ AC Line
1
1
16
FIGURE 9
POWER
CONNECTOR J48
CONTROL
CONNECTOR J49
1
J49
PIN 1 ‐ C1
PIN 2 ‐ W / W1
PIN 3 ‐ C2
PIN 4 - Delay
PIN 5 ‐ Cool
PIN 6 ‐ Y1
PIN 7 ‐ Adjust
PIN 8 ‐ Out
PIN 9 ‐ O
PIN 10 ‐ DS(PWM)
PIN 11 ‐ Heat
PIN 12 ‐ R
PIN 13 ‐ EM / W2
PIN 14 ‐ Y / Y2
PIN 15 ‐ G
PIN 16 ‐ Out +
J48
PIN 1 ‐ Jumper PIN 1 to PIN2 for 120VAC line input only.
PIN 2 ‐ Jumper PIN 1 to PIN2 for 120VAC line input only.
PIN 3 ‐ Ground
PIN 4 ‐ AC Line
PIN 5
‐
AC Line
16
1
NIDEC / EMERSON MOTOR
HARNESS CONNECTORS
FIGURE 10
Power Choke (L13)
A choke coil is used on 5 ton 1 hp units. The choke is
located on the blower housing and is used to suppress
transient current spikes.
Precautions
If the furnace or its electronically controlled blower mo-
tor is improperly or inadequately grounded, it may cause
television interference (commonly known as RFI or radio
frequency interference).
This interference is caused by internal switching frequen-
cies of the motor controller. TV interference may show up
as small specks or lines which randomly appear on the
TV screen accompanied by pops or clicks in the sound.
Before attempting any service, make sure the indoor unit
is causing the interference. To check, disconnect power
to indoor unit then check TV for continued signs of inter-
ference.
TV interference may be stopped by making sure the motor
is solidly grounded to the cabinet (metal to metal) and by
making sure the cabinet is solidly grounded. If TV interfer-
ence persists, make sure the television (and all a󰀨ected
RF appliances) are moved away from the furnace. Also
make sure a󰀨ected appliances are connected to a sepa-
rate electrical circuit.

Lennox ML296UHV Series Specifications

General

Brand	Lennox
Model	ML296UHV Series
Category	Furnace
Language	English