Without A Frequency Converter - Danfoss VLT HVAC Basic Drive FC 101 Design Manual

Product Overview

3.1.9 Without a Frequency Converter

Cooling section Heating section
-
Return
Return Flow
Control
3-Port
valve
Valve
posi-
tion
Bypass
Pump
M
x6
Starter
Fuses
LV
supply
P.F.C
Mains
D.D.C. Direct digital control
E.M.S. Energy management system
V.A.V. Variable air volume
Sensor P Pressure
Sensor T Temperature
Illustration 3.9 Traditional Fan System
MG18C702
Design Guide
Inlet guide vane
+
Flow
Control
3-Port
valve
Valve
posi-
Bypass
tion
IGV
Motor
Pump
M
or
actuator
x6
Starter
Control
Fuses
LV
supply
P.F.C
Mains
Danfoss A/S © 04/2016 All rights reserved.
Fan section
Fan
M
Mechanical
linkage
and vanes
x6
Starter
Power
Factor
Correction
Mains
Supply
air
V.A.V
Sensors
outlets
PT
Duct
Local
Main
D.D.C.
B.M.S
control
Temperature
control
signal
Pressure
0/10V
control
signal
0/10V
17
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