STAINLESS STEEL
SSLFHFD-FFU
CRITI-CLEAN ULTRA FAN FILTER UNIT
CONTROLS
The fan filter unit can be controlled through various inputs:
1. Local potentiometer control
- Adjust airflow from the face(disabled if unit external controlled)
- Adjust flow from back of unit (disabled if face control present)
2. Individual unit wall mounted control (must be determined before ordering)
3. 0 - 10V/0 - 5V DC Control
4. 0 - 20mA/4 - 20mA Control
5. Full range of network controls including connection to BAS/BMS through MODBUS RTU RS485
control
- BACNet IP, BACNet MS/TP, & LONWorks available with additional hardware
Additionally, monitoring and control of the FFU can be done through closed loop control from
sensors such as pressure transducers, thermostats, partical counters, etc.
This manual will give basic information on how to connect controls and sensors to the unit. For
more details refer to the instructions included with the controller or sensors.
SIGNAL BEHAVIOUR
The Network CFM Setpoint is read and written directly in units of CFM.
External analog signals are scaled to a minimum and maximum airflow when in CFM control mode.
IE: 0-5VDC 2.5VDC=0.5 of full range. = 0.5*unit maximum CFM.
When operated from an external setpoint or network value 0-10% is reserved for local over-ride of the EC Moctor Control board POT so the unit can be
adjusted from the main control board. 10%-20% is reservered for the remote Off Signal.
INP1/ANA1 Input
Control Function: % of Input Range
Range
Units
ECM Control Pot
0-10%
Remote Off
10-20%
External Setpoint
20-100%
0-5
Volts
0 to 0.5
0.5 to 1.0
1.0 to 5.0
0-10
Volts
0 to 1.0
1.0 to 2.0
2.0 to 10.0
0-20
mA
o to 2.0
2.0 to 4.0
2.0 to 20.0
4-20
mA
0 to 5.6
5.6 to 7.2
7.2 to 20.0
INSTALL AND OPERATION
DRAWING NAME
DRAWN
MATERIAL
CHKD
APRVD
FINISH
SIZE
ENGINEER
CONTRACTOR
TAG
QTY
BRS
REV # E
SHT 17 30
/
SCL
DO NOT
SCALE
1:10
JOB NAME
