Honeywell LCBS User Manual

LCBS CONNECT SOLUTION
39 31-00118EFS—01
11. Simple Dehumidification
MCR36718
BUILDING NAME
CVAHU RTU NAME
DATE
COOL 2
HEAT 1
HEAT 2
FAN
CO
O
L
2
COOL 1
DEHUMIDIFICATION – SIMPLE
C7250A MIXED AIR SENSOR
C7250A DISCHARGE AIR SENSOR
C7400S RETURN AIR ENTHALPY SENSOR
M7215A ECONOMIZER ACTUATOR
AT40 TRANSFORMER(S)
THIS APPLICATION PROVIDES AUTOMATIC CONTROL OF DEHUMIDIFICATION. WE SUPPORT TWO METHODS
OF DEHUMIDIFICATION. FIRST, WE PERFORM STANDARD DEHUMIDIFCATION WITH CONNECTED COOLING
AND HEATING EQUIPMENT. IF DEHUMIDIFICATION LIMIT IS EXCEEDED AT ANY TIME, OCCUPIED OR
UNOCCUPIED TIMING, COOLING AND HEATING IS ENABLED AND OPERATED CONCURRENTLY. HEATING
WILL CYCLE TO ATTEMPT TO DEHUMIDIFY. WHEN HYSTERESIS IS OBSERVED AND HUMIDITY FALLS BELOW
DEHUMIDIFICATION LIMIT, HEATING AND COOLING ARE CYCLED OFF. IF A CALL FOR COOLING STILL EXISTS,
COOLING CONTINUES TO OPERATE BASED ON COOLING SETPOINT. SECOND, AN LCBS CONNECT
CONTROLLER OUTPUT CAN BE PROGRAMMED TO CONTROL A DEHUMIDIFICATION UNIT LIKE A DX DEHUMIFIER
OR DESSICANT SYSTEM. IF A CALL FOR DEHUMIDIFICATION EXISTS, THE SELECTED SYSTEM OPERATES
INDEPENDENTALY OF LCBS CONTROL FUNCTIONS. THE CONFIGURER CAN ALSO SET A “RUN ON TIMER”
THAT OPERATES AFTER THE CALL FOR DEHUMIFICATION ABATES, UP TO 15 MINUTES.
LCBS CONNECT – INFORMATION
OS#
DESCRIPTION
YCRL6438SR LCBS CONTROLLER (WITH WALL MODULE)
LCBS CONNECT – COMPONENTS SHOWN
C7400S OUTDOOR AIR ENTHALPY SENSOR
1
2 3 4 5 6 78
9
10 11 12 13 14 15 16 17 18 19 20
21 22 23
24 25
26
27 28
29 30 31 32 33 34 35 36 37 38 39 40
24VAC
COM
24VDC
24VAC
R W1 W2
W3 OB G-L Y1
Y2 Y3 G-L RH
RC COM AUX
DO1 AUX G
UI-1
DI-2
DI-3
UI-4
UI-5
UI-6
UI-2
UI-3 COM
COM
COM
DI-4 DI-1
COM
AO-3
AO-1
COM
A0-2
COM
NET-1 NET-2
S-BUS
S-BUS
SHIELD EGND
LCBS
CONTROLLER
HVAC SYSTEM
24 VAC POWER
EXISTING
TRANSFORMER
SYLK BUS
24 VAC
CONTROLLER
POWER
LCBS
CONTROLLER
WALL
MODULE
DEHUMID
START
CIRCUIT
(METHOD #2)

Honeywell LCBS Specifications

General

Brand	Honeywell
Model	LCBS
Category	Controller
Language	English