Power Wiring - Distech Controls ECLYPSE Installation Manual

Power Wiring

Voltage: 24VAC/DC; ± 15%, Class 2
For terminal block connector wiring best practices, see General Wiring Recommendations.
This is a Class 2 Product. Use a Class 2 transformer only (rated at least 16VA at 24VAC) for each ECY‑STAT.
The ECY-STAT can be powered off of the equipment transformer provided that it receives a minimum of 24VAC.
If sufficient power cannot be provided to the ECY-STAT from the equipment transformer, a separate transformer rated at 16 VA minimum must be used
for each ECY-STAT. Choose a transformer that can supply both the needs of the ECY-STAT (16VA) and any other 24VAC loads such as connected
sensors and actuators: add up the maximum power consumption of all 24VAC loads and multiply this sum by 1.3. If the resulting total [16VA + (1.3 ×
24VAC loads)] is higher than the equipment transformer can handle, use a separate transformer.
Use an external fuse on the 24VAC side (secondary side) of the transformer, as shown in the figure below, to protect against power line spikes and mis-
wiring.
Maintain consistent polarity when connecting controllers and devices to the transformer. One terminal on the secondary side of the transformer must be
connected to the building's ground. Ensure that the 24V COM terminals of all power supplies are connected to the grounded transformer secondary con-
nection.
Power Wiring with Jumper Installed
The jumper bridging Rc and Rh is factory installed and should remain in place unless there is a need to control separate heating and cooling systems.
Figure 5: Power wiring with jumper installed
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