McQuay PDHA Especificaciones descargar pdf (Pagina 9)

Catalog 1300-1 / Page 9 of 42

Beyond “Standard” Expectations

Easy To Read LED Diagnostics

Sensors in the unit continually monitor the indoor

coil, outdoor coil, and outdoor air conditions.

If abnormal conditions are detected, an error

code is displayed, removing the guess work in

troubleshooting a unit.

The Hydronic Experts

McQuay is a leading manufacturer of hydronic heat

equipment. We specialize in providing hydronic

heat with a host of congurable options.

Modes

● Cooling only mode with hydronic heat

● Cooling only mode with hydronic heat and

supplemental electric heat.

● Top mounted hydronic coil

(steam or hot water)

● Subbase hydronic (steam or hot water)

Controls-With Built In Hydronic Logic

● Normally open/normally closed valve

control

● Heat fan lockout – prevent the fan from

coming on until there is heat in the pipes.

Top-Mounted Hydronic Heat (see Catalog 1355)

Easy fan motor removal

Electric Heat Override

Heat pump units can be manually switched to

electric heat, providing added freeze protection

if the heat pump mode is not available due to a

compressor failure.

Compressor Protection

The life of the compressor is extended through

built in protection logic such as:

● High temperature protection if the

compressor temperature exceeds 154°F

● Minimum run time

● Minimum off time

● Random restart after a power outage

● Low ambient lockout when the outdoor

air temperature falls below 25°F

Memory Recall

Control settings are saved in a non-volatile

memory, allowing the last settings to be recalled

after a loss of power.

Easy Installation And Service Design

Quick Link Connections

Applied PTAC/PTHP units are designed for easy

access with quick link connections to the control

box. The simple slide in/slide out conguration

makes it easy to access the electric heater, indoor

and outdoor fans, motors, and compressor.

Easy Fan Removal

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