Deh (Dehumidification) Control Logic Setting; Air Handling Unit Fan Speed Setting - Lennox VPB036H4M Installation Instructions Manual

DEH (Dehumidification) Control Logic Setting

SW3-3 defines the normal open or normal closed status
of dehumidification relay output DEH (dry contact 24V 1A
max) at terminal CN51.
SW3-3 set at 0 (default) indicates the relay is CLOSED
when dehumidification demand is OFF. The relay is OPEN
when dehumidification demand is ON.
SW3-3 set at 1 indicates the relay is CLOSED when
dehumidification demand is ON. The relay is OPEN when
dehumidification demand is OFF.
Indicates that the dry contact "DEH"
SW3
CLOSED for dehumidification OFF, and
ON
"DEH" OPENED for dehumidification ON.
(default)
1 2 3 4
SW3 Indicates that the dry contact "DEH"
ON
CLOSED for dehumidification ON, and
"DEH" OPENED for dehumidification OFF.
1 2 3 4
(default)
SW3-4 is reserved. Do not adjust.
SW4 is reserved. Do not adjust.

Air Handling Unit Fan Speed Setting

Configure the number of fan speeds using SW5-1 and
SW5-2. Main kit only.
The fan control logic is shown in the Fan Control section.
Main AHU Control Kit Only
SW5
ON Indicates that the fan has three speeds:
Low, Medium, and High. (default)
1 2 3
SW5 Main AHU Control Kit Only
ON
Indicates that the fan has two speeds: Low,
and High.
1 2 3
SW5
Main AHU Control Kit Only
ON
Indicates that the fan has one speed: High.
1 2 3
SW5 Reserved.
ON
1 2 3
NOTE - Dip switch handle location is shown as a solid
black box in the tables.
0 = OFF (down)
1 = ON (up)
NOTE - Turn off power to the unit before setting the dial/
dip switch. The function will be available when the unit is
powered on again.
28