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VAV Start Up/Check Out Procedure
Zone Sensor Wireless Option (Wireless Zone Sensor). Receiver is used to receive a signal
from the wireless zone sensor and can be factory installed- Part Number X13790855010. The wiring
harness connects the receiver to the VAV VV550 Controller - Part Number X19051672010.
Zone Sensor Wireless Option (Zone Sensor). The wireless zone sensor with night setback
timed override (TOV) on/cancel button. Also can be ordered for Celsius and Fahrenheit setpoint
adjustment - Part Number X13790492010 (F), Digital Display wireless zone sensor- Part Number
X13790822010
Zone Sensor Wiring
Location and Mounting. A zone sensor in each control zone should be located in the most
critical area of the zone. Sensors should not be mounted in direct sunlight or in the area's supply
air stream. Subdivision of the zone may be necessary for adequate control and comfort. Avoid
mounting zone sensors in areas subject to the following:
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Drafts or "dead spots" behind doors or corners.
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Hot or cold air ducts.
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Radiant heat from the sun or appliances.
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Concealed pipes or chimneys.
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Unheated or uncooled surfaces behind the sensor such as outside walls.
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Air flows from adjacent zones or other units.
Wiring. Each unit must be controlled by a zone sensor that is designated specifically for use with
the VAV VV550 Controller. Field wiring for the zone sensors must meet the following requirements:
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Must be 14 to 18 AWG.
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Refer to Figure 2, p. 17 and Figure 3, p. 18 and the sensor instructions for terminal connections.
•
If local codes require enclosed conductors, the zone sensor wires should be installed in conduit.
Do not route zone sensor wires in conduit with 24VAC or other high power conducting wires.
Zone sensor comm stubs. For the most reliable communications, limit the number of zone
sensor communication stubs to 8 per Comm5 link unless using a repeater then it is 16 stubs. Each
stub should not exceed 50 feet. Exceeding these limits increases the likelihood of communication
problems. Connect Communication wire to terminals TB2-5 and TB2-6 on VV550 controller and to
comm. Jack in zone sensor
Figure 7.
Communication stubs used with a repeater
Notes:
1. Maximum wire length on either side of the repeater is 4,500 ft (1,400 m).
2. The link repeater is limited to 60 devices on either side of the link.
3. Place termination resistors at the end of the link. Use a 105 X resistor at each end of the link for Level 4 wire
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