Emerson PFH020A-L, User Manual

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Optional Factory-Installed Features—Self-Contained and Evaporator Units
11 Liebert
®
Mini-Mate2
™
3.0 O
PTIONAL
F
ACTORY
-I
NSTALLED
F
EATURES
—S
ELF
-C
ONTAINED AND
E
VAPORATOR
U
NITS
3.1 Reheat
Electric Reheat includes 304/304 stainless steel finned tubular reheat elements for added durability
and corrosion resistance with a high limit safety switch.
SCR Reheat provides tight temperature control by rapidly pulsing the 304/304 stainless steel reheat
elements in small increments. A solid state relay is factory-installed and wired to the microprocessor
control. The compressor is locked On, with the reheat modulated to track the load. Not available on
chilled water, free-cooling or other reheat options.
Hot Water Reheat includes a hot water coil, two-way solenoid valve and Y-strainer. Available only
on chilled water units; not available with other reheat options.
Hot Gas Reheat can be ordered on self-contained models. This option includes the coil and necessary
piping and the control valve. This option is not available with chilled water, free-cooling or other
reheat options.
3.2 Humidifier
The Canister Humidifier includes a steam-generating type humidifier with automatic flushing
circuit, inlet strainer, drain, 1" (25.4mm) air gap on fill line and solenoid valves. Humidifier problem
alarm annunciates at the wall-mounted display panel.
Remote Humidifier Contact allows the unit’s humidity controller to control a humidifier outside
the unit. Power to operate the remote humidifier does not come from the Liebert Mini-Mate2.
Available on units with or without internal humidifier.
3.3 Sensors
Smoke Sensor checks return air, shuts down the unit upon sensing smoke and activates visual and
audible alarms at the wall-box display. This smoke sensor is not intended to function as or replace
any smoke sensor system that may be required by codes.
High-Temperature Sensor senses the return air temperature and shuts down unit if the
temperature reaches 125°F (52°C). This device is not meant to replace any fire detection system that
may be required by national or local codes.
3.4 Switches
Filter Clog senses pressure drop across the filters and activates visual and audible alarms at the
wall-box display. The wall-box display annunciates the alarm and flashes a notification upon reaching
a customer setpoint.
A
Factory-Installed Non-Fused Disconnect Switch allows the unit to be turned off for
maintenance.
A disconnect switch is standard for the evaporators, chilled water units and indoor condensing units,
but these units may be specified without the switch.