Lennox LDT DUAL FUEL Series - Blower Parameter Settings; Direct Drive Blower Settings Table

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TABLE 1
DIRECT DRIVE PARAMETER SETTINGS - 581102-01
Parameter
Field
Setting
Description
Note: Any changes to Smoke CFM setting must be adjusted before the other CFM settings. Use SETTINGS > RTU OPTIONS >
EDIT PARAMETERS = 12 for EBM, 6 for ECM
BLOWER SMOKE CFM % Percentage of RPM for blower smoke speed.
SETUP > TEST & BALANCE > BLOWER
BLOWER HEATING HIGH CFM % Percentage of RPM for blower heating high speed.
BLOWER HEATING LOWCFM %
Percentage of RPM for blower heating low speed (P volt gas

BLOWER COOLING HIGH CFM % Percentage of RPM for blower cooling high speed.
BLOWER COOLING LOW CFM %
Percentage of RPM for blower cooling low speed and vent
speed for standard static blowers.
BLOWER VENTILATION CFM % Percentage of RPM for high static blower ventilation speed.
SETUP > TEST & BALANCE > DAMPER
BLOWER HIGH CFM DAMPER POS % %
Minimum damper position for high speed blower operation.
Default 0%.
BLOWER LOW CFM DAMPER POS % %
Minimum damper position for low speed blower operation. De-
fault 0%.
POWER EXHAUST DAMPER POS % %
Minimum damper position for low power exhaust operation.

SETTINGS > RTU OPTIONS > EDIT PARAMETERS = 216
POWER EXHAUST DEADBAND % % Deadband % for power exhaust operation. Default 10%.
SETTINGS > RTU OPTIONS > EDIT PARAMETERS = 10 (Applies to Thermostat Mode ONLY)
FREE COOLING STAGE-UP DELAY sec
Number of seconds to hold blower at low speed before switching
to blower at high speed. Default 300 seconds.
Installer: Record any parameter changes under “Field Setting” column. Settings need to be recorded by installer for use
when Unit Controller is replaced or reprogrammed.