On the 8 port output expander with relays, it appears the relays can switch 120V. According to the docs, 10A @ 125 VAC. Is anyone doing this?
I am putting in 3 more pumps for my in floor heating, and I don't want to spend another $350 for a pump controller. The only thing the pump controller does is detect whether the thermostat is calling for heat or not (via an open or closed circuit), and then turn on the main pump, and the pump for the zone that is calling for heat. The pumps only take 0.48 amps each, well below the rated max.
What I'm concerned about is three things:
- Does building code typically allow low voltage and line voltage in the same box?
- How to enclose the relay board so no one sticks their fingers in it and gets zapped with line voltage
- Can running line voltage through them cause interference or problems with the ELK itself? Are the relays properly isolated to make sure there is no power draining back into the system?
I'm looking at using a ELK-M1XOVR with a single RS-485 wire run to the pump manifold panel.
I am putting in 3 more pumps for my in floor heating, and I don't want to spend another $350 for a pump controller. The only thing the pump controller does is detect whether the thermostat is calling for heat or not (via an open or closed circuit), and then turn on the main pump, and the pump for the zone that is calling for heat. The pumps only take 0.48 amps each, well below the rated max.
What I'm concerned about is three things:
- Does building code typically allow low voltage and line voltage in the same box?
- How to enclose the relay board so no one sticks their fingers in it and gets zapped with line voltage
- Can running line voltage through them cause interference or problems with the ELK itself? Are the relays properly isolated to make sure there is no power draining back into the system?
I'm looking at using a ELK-M1XOVR with a single RS-485 wire run to the pump manifold panel.