BAS-SVX62E-EN 15
Wiring Installation
• Replace the control box cover after field wiring to prevent any electromagnetic interference.
•Review Tabl e 7 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.
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