Mr. Cool - Disconnect Toggle Switch

[GoldDigger]

A technician working on the unit would know to turn off the disconnect. At least he/she should or they have no business working on them. I never saw in the instructions, on the ones that I have installed, where there was any mention of an inside disconnect.

As long as the outside disconnect is lockable and the technician actually uses a lock, it should be code compliant. But testing of the inside unit may then require a lot of running back and forth between inside and outside.

Even if they do not specifically mention an inside disconnect, the instruction typically include the CYA requirement that the installation must be done in accordance with the applicable electrical codes.

 

[Ponchik]

A lockable breaker/disconnect won't solve the issue?

ETA, GD posted about lockable disconnect.

...instruction typically include the CYA requirement that the installation must be done in accordance with the applicable electrical codes.

Isn't the lockable disconnect a code compliant installation anyway?

 

[macmikeman]

When unsure at time of rough in of whether or not it will be called for by the local inspector, I came up with a fairly easy method to deal with either way- having to put in a disconnect switch , or the inspector doesn't care and it is not going to become a problem at final. Install an adjustable depth single gang box near the interior unit for a switch. Precisely write down it's measurements from nearest walls and height above ff. Run the 3 wire control cable for the interior fan coil in and back out of the box without break in the outer sheath of the cable. Set the box depth to flush with face of stud. Tape over the opening with painter's tape and write bury or appropriate word the drywall installers will recognize.
After paint and wallboard is up and done and at final if the inspector insists on a disconnect switch you can cut open the box , adjust the depth to flush the outside of the drywall and install the disconnection means.

 

[Rock86]

A lockable breaker/disconnect won't solve the issue?

ETA, GD posted about lockable disconnect.


Isn't the lockable disconnect a code compliant installation anyway?

but what about the indoor units?

 

[GoldDigger]

but what about the indoor units?

Disconnecting the outdoor unit disconnects the indoor unit too, since power to the indoor unit must be routed through the outdoor unit for the control system to work.

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[Rock86]

Disconnecting the outdoor unit disconnects the indoor unit too, since power to the indoor unit must be routed through the outdoor unit for the control system to work.

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Right, but if you perform maintenance on the one of three zones, you need to be able to disconnect that specific zone, and that disconnect needs to be within line of sight, no?

New information to the post. The indoor units are not labeled L1 L2 N G... they are are 1-2-3-G. Does this make them exempt from needing a switch if they are not identified as feeders?