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CONNECTING THE POWER
The VAV / VVR must be powered by 24VAC Class 2 low voltage transformers. To connect the power wiring to the
VAV / VVR, locate the terminals on the outside edge of the VAV / VVR terminal strip and connect to the 24VAC power
source. Figure 8 illustrates the VAV / VVR assembly showing the location of the 24VAC terminal block.
NOTE:
For 24 VAC power, use only power supplies with a Class 2 transformer rating.
Do not power with any voltage other than the 24VAC low voltage listed. Connect power to the VAV / VVR by
connecting wires from the transformer to the 24VAC terminals L1 and L2. The terminals are labeled on the edge of
the VAV / VVR. The red indicator LED under the board clam shell cover will illuminate when the power is properly
connected.
For connections to the VAV / VVR, strip the wire back approximately 3/16" and insert into the terminal block. Back
out the screw on the terminal block until the bare wire inserts fully, and turn the screw back down until there is firm
tension on the wire. Make sure that the clamp secures the stripped portion of the wire, and that no insulation is under
the clamp.
Figure 8:
BASYX VAV / VVR power connections
L
1
L
2
N
O
1
2
4
V
A
C
24VAC
+
-
24VAC
TRANSFORMER
VAV/VVR BOARD
120VAC CIRCUIT
MULTIPLE CONTROLLERS MAY BE POWERED
FROM A SINGLE TRANSFORMER, USE 5VA
PER VAV/VVR FOR TRANSFORMER SIZING.
THE VAV/VVR MAY BE POWERED FROM
THE EXISTING CONTROL
TRANSFORMER IN A FAN POWERED OR
REHEAT BOX IF AVAILABLE.
