Lennox LHT078H

Page 37
TABLE 16
LDT/LHT 150 (2-Compressor) Staged Direct Drive
Para
meter
Factory
Setting
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
5000
CFM
CFM
Blower CFM during smoke
detection.
SETUP > TEST & BALANCE (can also use SETTINGS > RTU
OPTIONS > BLOWER > SPEEDS)
5000
CFM
CFM
Blower CFM during heating.
4375
CFM
CFM
Blower CFM during high speed
cooling (2 compressor)
operation.
1100
CFM
CFM
Blower CFM during low speed
cooling (1 compressor)
operation.
1100
CFM
CFM
Blower CFM during ventilation.
1655
RPM
RPM*
Adjust RPM based on unit static
and blower tables to reach tar
get CFM.
*Once all four blower settings are entered, the target (highest of the
heating and cooling settings) CFM will be displayed. Once the RPM
is saved for the target CFM, all other blower RPM values are set by
the Unit Controller according to the field CFM setting..
SETUP > TEST & BALANCE (can also use SETTINGS > RTU
OPTIONS > DAMPER)
0% %
Damper min. position during
LOW blower operation.
0% %
Damper min. position during
HIGH blower operation.
50% %
Min. damper % for stage 1 pow
er exhaust operation.
SETTINGS > RTU OPTIONS > EDIT PARAMETERS
29 101% %Open
Damper minimum position during
G blower operation. (Setting para
meter 29 to “101” disables para
meter 29 and passes control to
parameter 9 or 132)
216 10% %
Deadband % for stage 1 power
exhaust operation.
SETTINGS > RTU OPTIONS > EDIT PARAMETER
85 0°F °F
Compressor 1 low temp lockout.
Settings lower than 0°F could
void warranty.
86 0°F °F
Compressor 2 low temp lockout.
Settings lower than 0°F could
void warranty.
TABLE 17
581037-01
Units With LonTalk Settings
Use menu RTU Menu > Network Integration > Network Setup Wizard
> Set “LONTALK”
TABLE 18
581038-01
Units With BACnet Settings
RTU Menu > Network Integration > Network Setup Wizard > BACnet
MS/TP > See BACnet MAC Address
BACNET MAC ADDRESS:
Units With Room Sensor, CPC/LSE Gateway Settings
RTU Menu > Network Integration > Network Setup Wizard > SBUS >
Set SBUS Address
LCONN ADDRESS: