Viconics VTR7300 Installation Manual - Manual (Page 3)

3 | PIR Ready VTR7300 Series-Installation Guide
12. Re-Install wiring terminals in their correct locations (fig. 3).
13. Re-install the cover (top side first) and gently push extra wire length back into the
hole in the wall.
14. Install security screw.
O
PERATION
O
VERVIEW
The VC3xxxX Series Line Voltage Switching Transformer Relay Pack(s) operate as slave
unit(s) under the control of a single master VTR73xxA Terminal Equipment Controller.
Fan operation can be configured and wired for the following:
 3 Speed configuration using 3 fan relays ( Low - Med - High )
 2 Speed configuration using 2 fan relays ( Low - High )
 3 Speed configuration with auto fan speed mode using 3 fan relays
( Low - Med - High - Auto )
 2 Speed configuration with auto fan speed mode using 2 fan relays
( Low - High - Auto )
 Single fan speed configuration.
The VTR7300 Controller can be configured for typical 2 or 4 pipe heating / cooling FCU
(Fan Coil Unit) applications.
2 or 4 pipe only operation can be configured and wired for the following:
o Cooling only
o Heating only
o Cooling / Heating with network or local auto changeover
 If replacing an existing Line Voltage FCU Thermostat, label the wires
before removal of the thermostat.
 Electronic controls are static sensitive devices. Discharge yourself
properly before manipulating and installing the Terminal Equipment
Controller.
 A short circuit or wrong wiring may permanently damage the Terminal
Equipment Controller or the equipment.
 All VTR7300 series controls are designed for use as operating controls
only and are not safety devices. These instruments have undergone
rigorous tests and verification prior to shipping to ensure proper and
reliable operation in the field. Whenever a control failure could lead to
personal injury and/or loss of property, it becomes the responsibility of
the user / installer / electrical system designer to incorporate safety
devices ( such as relays, flow
switch, thermal protections, etc…) and/or
an alarm system to protect the entire system against such catastrophic
failures. Tampering with the devices or unintended application of the
devices will result in a void of warranty.