Ab b c c, Fan coil unit controller series application guide – Viconics VT8300 Low Voltage Application Guide User Manual
Page 60
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Fan Coil Unit Controller Series
Application Guide
60
Viconics Technologies Inc.
|
9245 Langelier Blvd.
|
St.-Leonard
|
Quebec
|
Canada
|
H1P 3K9
|
Tel: (514) 321-5660
|
Fax: (514) 321-4150
028-0444-01
www.viconics.com
|
February 2015
PIR can maximize your
energy saving from
10-30% by adjusting
temperature set points in
unoccupied zones during
scheduled periods.
Typical Savings of 10-30%
0
5
10
15
20
25
30
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40
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85
0
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Time of Day (EST)
En
er
gy
U
sa
ge
(K
Wh
)
0%
10%
20%
30%
40%
50%
Savi
ng
P
er
cen
tag
e
Typical Consumption
PIR Thermostat Consumption
Savings
Appendix A - pASSiVe inFRA-Red SenSoR SpeCiFiCATionS
Initially, the Controller is in Stand-by mode and Stand-by setpoints are used for the Controller. When the Passive
Infra-Red (PIR) sensor detects motion, the Occupancy status switches to Occupied and the Stand-By Time timer
is reset. The Occupied setpoints are used for this operation.
If no motion is detected in the room for the entire Stand-By Time duration (adjustable parameter), the room
switches to Stand-by mode and Stand-by setpoints are used. While in Stand-by mode, if no motion is detected
for the entire Unoccupied Time period (adjustable parameter), the room switches to Unoccupied mode and
uses its Unoccupied setpoints. While in Stand-By or Unoccupied mode, any motion switches the room back to
Occupied mode.
Passive Infra-Red Sensor Sequence of Operation
Energy Savings
Typical Detection Pattern for PIR Lens
20
O
20
O
20
O
20
O
40
O
A
B
B
C
C
Horizontal Angles (Typical)
Transverse motion: 4-5 ft/s
/
1.5 m/s
Recommended installation
height for PIR sensor:
4 - 5 ft. / 1.2-1.5 m
Sensor Ranges
A = 20 ft. / 6.1 m
B = 14 ft. / 4.3 m
C = 11 ft. / 3.4 m
Center
30
O
Vertical Angle (Typical)
Center