
BAS-SVX62E-EN
15
Wiring Installation
•
Replace the control box cover after field wiring to prevent any electromagnetic interference.
•
Review
for factory-installed components and voltage amperage.
Table 7.
Binary Load Valves
Table 6.
Calculating Actual VA Requirements
Item
Sub
VA Draw Per I/O (24 Vac)
Maximum Total VA Draw (24
Vac)
UC210 Board
UC210 (No I/O)
8 VA
3 x AI
0.2 VA per AI
1 VA
2 x UI
0.13 VA per UI
0.25 VA
1 x PI
0.13 VA per PI
0.25 VA
1 x BI
0.17 VA per BI
0.5 VA
2 x AO
1 VA Per AO
2 VA
6 x BO (TRIAC)
0.34 VA Per TRIAC (No Load)
1 VA
Subtotal for UC210; 13 VA
24 Vdc Supply
200 mA
(a)
1 VA Per 25 mA DC
8 VA
Total for UC210; 21 VA
Binary Outputs (TRIAC)
BO1 to BO5
0.5 A- 12 VA@ 24 Vac
12 VA Maximum
Below is an example calculation for a cooling-only box current requirements:
Description
Draw
• UC210 no I/O
• Setpoint and Zone Temperature
• Flow
• Occupancy Input
• Binary for Air Damper (only one energized at a time, not
including actuator draw)
• Total
• 8 VA
• 0.4 VA
• 0.13 VA
• 0.17 VA
• 0.34 VA
• 9.2 VA (Plus air damper draw)
With a Trane F Series Box:
13.2 VA Total
(a) See device connected to DC supply for current draw.
Style
Volt Amps
F - Style Actuator
4 VA
Air Valve Actuator C through E Style
12 VA
Fan Power Fan Output
6 VA
Hot Water Proportional
4 VA
Hot Water 2 Position
6.5 VA
Electric Heater Magnetic Contactor
10 VA
Electric Heater Mercury Contactor
12 VA
Note:
VariTrane
cooling-only
Series D and E models consume 20 VA (12 VA for the actuator and 8 VA for the board). The
heating output ratings remain the same.