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14

 

Pband 

Proportional band setting 
Default is : 

3

 

Adjust the proportional band used by the Terminal Equipment Controller PI control 
loop.  
 

Warning.

 Note that the default value of 3.0 °F ( 1.2 °C ) gives satisfactory 

operation in most normal installation cases. The use of a superior proportional 
band different than the factory one is normally warranted in applications where the 
Terminal Equipment Controller location is problematic and leads to unwanted 
cycling of the unit. A typical example is a wall mounted unit where the Terminal 
Equipment Controller is installed between the return and supply air feeds and is 
directly influenced by the supply air stream of the unit. 

Value 

F scale Pband 

C scale 

Pband 

3 F 

1.2 C 

4 F 

1.7 C 

5 F 

2.2 C 

6 F 

2.8 C 

7 F 

3.3 C 

8 F 

3.9 C 

9 F 

5.0 C 

10 

10 F 

5.6 C 

 

Set Type

 

Temporary setpoint enable 
Default is : 

Permnent

  

 
Enables temporary setpoints 
feature to any change of 
occupied or unoccupied setpoint. 

Temporar

: (temporary) Local changes to the heating or cooling setpoints by the 

user are temporary. They will remain effective for the duration specified by 
ToccTime. Setpoints will revert back to their default value after internal timer 
ToccTime expires. 
To change setpoints permanently, revert to 

No

 this variable or write setpoints 

through the network. Any setpoints written through the network will be permanent 
ones and saved to EEPROM. 

Permnent

: (permanent) Any change of occupied or unoccupied setpoints through 

the keypad by the user are permanent and saved to & EEPROM 

SptFunc

 

Local setpoint settings 
Default value = 

Dual Stp

 

Set the local setpoint interface for the user 
 

 

Dual Stp 

( Dual Occupied Setpoints Adjustment ) 

 

AttchStp 

( Single Occupied Setpoint Adjustment ) 

TOccTime

 

Temporary occupancy time 
Default value = 

2 hours

 

Temporary occupancy time with occupied mode setpoints when override function 
is enabled 
When the Terminal Equipment Controller is in unoccupied mode, function is 
enabled with either the menu or UI2 configured as remote override input. 
Range is:

 0,1, 2, 3, 4, 5, 6, 7, 8, 9, 10, & up to 24 hours 

deadband

 

Minimum deadband 
Default value = 

2.0 °F ( 1.0 °C )

 

Minimum deadband value between the heating and cooling setpoints. If modified, 
it will be applied only when any of the setpoints are modified. 
Range is: 

2, 3, 4 or 5 °F, 1.0 °F increments ( 1.0 to 2.5 °C, 0.5 °C increments ) 

cal RS

  

Room temperature sensor 
calibration 
Default value = 

0.0 °F or °C

 

Offset that can be added/subtracted to actual displayed room temperature  
Range is: 

± 5.0 °F, 1.0 °F increments ( ± 2.5 °C, 0.5 °C increments ) 

cal RH

  

Humidity sensor calibration 
Default value = 

0 %RH

 

Offset that can be added/subtracted to actual displayed humidity by ± 15.0 %RH. 
Range is : 

± 15.0 %RH

 

Auto Fan 

Auto Fan Function 
Default value: 

AS

 

Auto Speed Fan Mode operation for Fan Sequences 2 and 3 

AS

 = 

Auto Speed

 during occupied periods. Fan is always on during occupied 

periods. 

AS AD = Auto Speed / Auto Demand 

during occupied periods.  

Summary of Contents for VTR73 Series

Page 1: ...000 Series Line Voltage Switching Transformer Relay Pack s operate as slave unit s under the control of a single master VTR73XX Terminal Equipment Controller A single VTR73XX Terminal Equipment Contro...

Page 2: ...el dependent The VC3xxxX Relay Pack supplies power to the wall VTR73xxA Terminal Equipment Controller The VTR73xxA Controller operates the VC3xxxX Relay Pack s via a simple communication bus A maximum...

Page 3: ...or is opened any movements detected by the remote PIR sensor or the PIR accessory cover will be ignored Use a Normally Closed contact switching device Contact opened Door opened Contact closed Door cl...

Page 4: ...ews in mounting holes on each side of the base Fig 4 8 Gently swing back the circuit board on the base and push on it until the tabs lock it 9 1Strip each wire 1 4 inch 10 Insert each wire according t...

Page 5: ...single VTR73xxA Terminal Equipment Controller From the VTR73xxA Terminal Equipment Controller to the first VC3xxxX Relay Pack o Existing or new field wires o 3 minimum required 14 22 Ga Solid or Stran...

Page 6: ...conditional to Humidity display is model and configuration dependent Model with RH sensor built in Display function can be enabled with RH display parameter Displayed range is 10 to 90 RH Outdoor air...

Page 7: ...ertain functions is made with configuration parameter lockout Local Setpoint Adjustment when Stp Func Dual Stp Dual Occupied Setpoints Adjustment Occupied setpoint adjustments Cooling mode Heating mod...

Page 8: ...t will be strictly for noise comfort issues Auto Speed Fan Mode operation for sequences 2 and 3 is dependent on Auto Fan parameter When Auto Fan is set to AS Default Auto Speed during occupied periods...

Page 9: ...erminal Equipment Controller reporting to a gateway maximum of 30 Terminal Equipment Controllers per gateway be sure you set the SAME PAN ID value both at the gateway and the Terminal Equipment Contro...

Page 10: ...tions using a Normally Open NO or Normally Closed NC remote PIR motion sensor Occupancy mode is now set as per applied PIR function and configuration Application information and examples are available...

Page 11: ...ed Service a backlit flashing Service alarm will be displayed on the Terminal Equipment Controller LCD screen when the input is energized It can be tied in to the AC unit control card which provides a...

Page 12: ...from 0 to 2 Will enable heat cool operation from the same output 4 0 Pipes can access all the sequences of operation from 0 to 4 Will enable heat cool operation from different output SeqOpera Sequenc...

Page 13: ...Terminal Equipment Controller unoccupied mode and setpoints become active The factory value or 0 0 hours Setting this parameter to its default value of 0 0 hours disables the unoccupied timer This pre...

Page 14: ...e permanent ones and saved to EEPROM Permnent permanent Any change of occupied or unoccupied setpoints through the keypad by the user are permanent and saved to EEPROM SptFunc Local setpoint settings...

Page 15: ...hour under normal control operation It represents the maximum number of cycles that the equipment will turn ON and OFF in one hour Note that a higher C P H will represent a higher accuracy of control...

Page 16: ...75 lb 0 34 kg PENDING Agency Approvals all models UL UL 873 US and CSA C22 2 No 24 Canada File E27734 with CCN XAPX US and XAPX7 Canada Industry Canada ICES 003 Canada PENDING Agency Approvals all mod...

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