Designed for HVAC Systems

The MCH Series variable frequency drive is designed
specifically for the control of variable torque HVAC loads:
o Fan Applications
o Centrifugal Pumps
o Cooling Towers
Whether you specify, install or operate HVAC systems,
you can rely on the drive built specifically for HVAC
professionals.

Install with Confidence

Management of labor and material costs is essential
in every HVAC installation. The MCH addresses both
through aggressive pricing and contractor ready packaging.
o Standardized designs shorten lead times
o Oversized terminals simplify control wiring
o Generous space for wire runs
o Top and bottom conduit knockouts for easy entry
o Hinged doors provide easy access to all connections
o Plain English programming for smooth start-up

Specify with Confidence

AC Tech has tens of thousands of HVAC installations
throughout the world. When the MCH is specified, it
delivers proven technology, performance and reliability.

HVAC specific product range:
o 1 to 250 Horsepower
o 200V, 240V, 400V, 480V and 590V input supplies
o Compact NEMA 1 and NEMA 12 enclosures

HVAC specific functions:
o Set-point (PID) control of temperature, pressure & flow
o V/Hz profile for centrifugal loads
o Compliant to IEEE 519 specification
o RS-485 communication for building automation
o 66 programmable parameters for complete flexibility

HVAC specific solutions:
AC Tech offers "contractor ready" solutions for the most
common drive configurations used in HVAC applications.
Factory installed options include:
o 3 phase AC line reactor
o Line disconnect or circuit breaker
o Drive bypass (manual or automatic)
o Drive fuses and bypass motor fuses
o 24 volt DC power supply for control devices
o Up to three programmable status relays (form-C)

Operate with Confidence

The installation of an MCH series drive typically pays for
itself within a few months! The MCH is built to impeccable
quality standards aimed at 100% customer satisfaction.

Robust designs:
o Rugged steel enclosures
o State-of-the-art circuit designs

Efficient operation:
o Improved system performance
o Cool motor operation extends motor life

Intuitive operator interface:
o 32 character plain English display
o Easily viewed operating windows