Technical data

Guide Specifications for Liebert Mini-Mate2—1- and 1.5-Ton Systems
Liebert
®
Mini-Mate2
™
40
2.3.5 Hot Gas Reheat
The complete hot gas reheat system shall include a copper tube, aluminum fin coil, three-way
solenoid valve, and refrigerant check valve. The capacity of the coil shall be ______ Btu/hr (kW). Hot
gas reheat shall operate only during dehumidification and capacity shall be offset by cooling coil
capacity. Hot gas reheat shall not be used for space heating.
2.3.6 Disconnect Switch, Non-Locking
The non-automatic, non-locking, molded case circuit interrupter shall be factory-mounted in the
high-voltage section of the electrical panel. The switch handle shall be accessible from the unit front
and mounted on the indoor cooling unit.
2.3.7 High-Temperature Sensor
The high-temperature sensor shall immediately shut down the system when high temperatures are
detected. The high-temperature sensor shall be mounted with the sensing element in the return air.
2.3.8 Smoke Sensor
The smoke detector shall immediately shut down the environmental control system and activate the
alarm system when activated. The sensing element shall be located in the return air compartment.
This smoke sensor shall not function or replace any room smoke detection system that may be
required by local or national codes.
2.3.9 Filter Clog Switch
The filter clog switch senses pressure drop across the filters and shall annunciate the wall box display
upon reaching the adjustable setpoint.
2.3.10 Free-Cooling/Dual Cooling Source
A free-cooling coil shall be integral to the evaporator cabinet, and shall be constructed of copper tubes
and aluminum fins. The coil shall be rated at ______ Btu/hr (kW) sensible cooling capacity with a 45°F
(22°C), ___% glycol solution. The coil shall require ______ GPM (l/s) and the total unit pressure drop
shall not exceed ______ feet of water (kPa) when in the free cooling mode. Free-cooling shall be
activated by an adjustable aquastat, and shall include a factory-piped, three-way valve and separate
supply and return piping.
Coil is designed for closed-loop applications using properly treated and circulated fluid. A
field-supplied heat exchanger system is required to prevent premature corrosion if applied to open
water tower loop. Not available with SCR reheat.
2.4 Ship-Loose Accessories
2.4.1 Remote Sensors
The unit shall be supplied with remote temperature and humidity sensors. The sensors shall be
connected to the unit by a 30 ft. (9m) shielded cable.
2.4.2 Supply and Return Grille
A factory-supplied supply and return grille kit shall be provided for supply and return air delivery
through a 2' x 4' (0.6m x 0.6m) T-bar ceiling grid. Kit shall include an air baffle plate, supply grille,
hinged return grille, 1" x 20 x 20" (25.4mm x 508mm x 508mm) MERV 8 (ASHRAE 52.2-2007) filter
and mounting frame.
2.4.3 Filter Box and Duct Kit
A return air filter box shall be provided with hinged filter access, and 1" (25.4 mm) duct flange. A
1" (25.4 mm) duct flange shall also be provided for air discharge. Filters shall be 1" x 16" x 20"
(25.4mm x 406mm x 508mm) MERV 8 per ASHRAE 52.2-2007.
2.4.4 Duct Collar Kit
1" (25.4 mm) duct flanges shall be provided for each of the discharge and return air openings. Filters
and filter box must be field supplied.