User manual

Chapter 2: Installing your TVS Phason
16
Connecting variable-stage cooling elements
The TVS has two variable-stage cooling terminals for connecting equipment such as variable-speed
fans.
Refer to
Appendix D: Installation worksheet on page 56 and Appendix E:
Configuration worksheets
on page 57 when installing variable-stage elements.
Only permanent split capacitor motors appropriate for variable speed control, or
shaded pole motors, can be used on the variable stages.
 If you are using three-phase power, connect the TVS and the variable cooling
equipment to the same phase. For more information, read
Using three-phase
power
on page 17.
 The ratings of the equipment must not exceed the ratings of your TVS's variable
stages.
Variable stage ratings: 5 FLA at 120/230 VAC, PSC motor
1/3 HP at 120 VAC, 1/2 HP at 230 VAC, PSC motor
7.5 A at 120/230 VAC, general-purpose (resistive)
Variable stage fuses: 12 A, 250 VAC ABC-type ceramic
To connect variable-stage cooling elements
Connect variable cooling elements to your TVS as shown in the following diagram.
Junction box
CIRCUIT
PANEL
L1
L2/NEUTRAL
32 33
VAR 2
STAGE
2