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T -309
1.3.11 460 Volt Cable
Various power cable and plug designs are available for
the main 460 volt supply. The plug options tailor the
cables to each customers requirements.
1.3.12 Cable Restraint
Various designs are available for storage of the power
cables. These options are variations of the compressor
section front cover.
1.3.13 Upper Air (Fresh Air Make Up)
The unit may be fitted with an upper fresh air makeup
assembly. These assemblies are supplied in two
designs, the standard design and the micro design. The
openings may also be fitted with screens.
1.3.14 Evaporator
The unit is fitted with an evaporator coil and a hermetic
thermal expansion valve.
1.3.15 Evaporator Fan Operation
The units are fitted with Normal Evaporator Fan
Operation, opening of an evaporator fan internal
protector will shut down the unit.
1.3.16 Labels
Operating Instruction and Function Code listing labels
will differ depending on the options installed. For
example, additional operating instructions are required
to describe start--up of a unit equipped with an
autotransformer. Where the labels are available with
additional languages, they are listed in the parts list.
1.3.17 Plate Set
Each unit is equipped with a tethered set of wiring
schematic and wiring diagram plates.
The plate sets are ordered using a seven digit base part
number and a two digit dash number. (See Unit Matrix
Manual, T-300)
1.3.18 Controller
Replacement controllers may be ordered as a universal
un--configured controller (without configuration
software) or configured.
1.3.19 Stepper Drive
All the units covered by this manual have suction
modulating valves whichact to control systemcapacity.
Units indicated as being fitted with “stepper drive” have
digital control motors fitted to the suction modulating
valve to open and close the valve in steps as required.
1.3.20 Condenser Grille
Two styles of condenser grilles are available, direct
bolted grilles and hinged grilles.