Download - BMS Automation wiring
Wiring
• Control Wiring – Multi strand , Annealed tin copper ,with sheath and
PVC insulation
• Power Wiring – Multistrand Copper conductor with PVC insulation
• Communication wiring – Multistrand , sheathed , stranded PVC insulated
– CAT 5 or 6 Cable
DDC CONTROL LOOP
BACNet Router
SCHEMATIC DIAGRAM FOR BUILDING MANAGEMENT SYSTEM
Alarm / Report
Printer
Modem
Operator Work station
Remote Web browser client
BACnet / LON
DDC
DRAWING: AHU Control
T Two way valve actuator
Room Temperature sensor
www SMS
Soft Room Temperature Set point
from Operator Workstation
CAT 6 Cable
Shielded Twist Pair
Typical BMS System Architecture
Four-conductor shielded cable with
metal foil shield and drain wire.
Application & Use Type of Wire
1. Communication Cabling between
DDC to DDC
2 core Twisted & Shielded Pair of
Wire 0.8 sq mm to 1.5 sq mm
2. Signal Cabling between Thermistor
Temp. Sensors & DDC
2 core Twisted & Shielded Pair of
Wire 0.8 sq mm to 1.5 sq mm
3. Signal Cabling between Active
Sensors & DDC
2 or 3 or 4 core Twisted & Shielded
Pair of Wire 1 sq mm or 1.5 sq mm
4. Cabling between VAV Zone Sensor
& VAV
2/3/4 core depending upon the type
of Zone Sensor 0.8 sq mm to 1.5 sq
mm
5. Cabling between Valve Actuator &
DDC
2/4 core 1 or 1.5 sq mm
6. System Level Cabling CAT 6 cabling
Typical I-O DEVICES IN HVAC SYSTEM
Typical BMS Wiring Interlock with the Starter Panel
Differential Pressure Sensor Wiring Details
Building Room Pressure Transducer Wiring Details
VFD Wiring Details
Typical Chiller Motorized Isolation Valve Wiring
Typical DDC Wiring Details
BACNet Router
SCHEMATIC DIAGRAM FOR BUILDING MANAGEMENT SYSTEM
Alarm / Report
Printer
Modem
Operator Work station
Remote Web browser client
BACnet / LON
DDC
DRAWING : Networked VAVs
THROUGH GATEWAY
www SMS
VAV Controller ..n
VAV Controller-01
Gateway
Room Temperature &
Set point
Damper
Actuator
CAT 5 Cable
Shielded Twist Pair
Shie
lded
Tw
ist P
air
BACNet Router
SCHEMATIC DIAGRAM FOR BUILDING MANAGEMENT SYSTEM
Alarm / Report
Printer
Modem
Operator Work station
Remote Web browser client
BACnet / LON
DDC
DRAWING : Networked PACs
THROUGH GATEWAY
www SMS
Gateway
PAC PAC PAC
PAC= Precision Air Conditioning
CAT 5 Cable
Shielded Twist Pair
Shielded Twist Pair