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Lennox PMZ Penthouses

Hi all,

I was informed from Lennox tech services that the PMZ penthouses where made for Custom Mechanical Structures. Anyone know about the penthouses or Custom Mechanical?

The ECM motor drops out and starts and stops. It is a two zone system with barametric damper. The dampers show open and the baremetric is also open. I am thinking that something is obstructing the air flow and the motor overloads trying to achieve the correct air flow.
It is supplying air for a 60,000BTU horizontal coil with a 5-ton txv and 6-ton condensor.

Will using the Tecmate tool work to verify this?

I do have the fax number for custom mechanical and will try faxing for their number tomorrow.

Thanks for the help!!

Don in Moberly Mo
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