gForce Ultra IOM
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Wiring Diagrams
Every Data Aire evaporator, condenser, condensing unit or fluid cooler comes with a wiring diagram.
These diagrams are ladder type schematics intended for service personnel. The intent is to allow the
technician to understand the wiring details associated with the electrical components and how they
interface with the controls as well as peripheral equipment (including secondary heat exchangers).
The wiring diagram in the evaporator will indicate field interface terminals to the secondary heat ex-
changer. The internal wiring of the secondary heat exchanger is found on a separate diagram which
can be found on the inside cover of the heat exchanger electrical box. Both diagram types are also
placed inside the shipping/warranty packet secured in the evaporator section.
Electronic Expansion Valve
The Electronic Expansion Valve (EEV) is standard for this unit. This high efficiency feature provides an
EEV in place of the standard Thermal Expansion Valve (EEV). The EEV controls superheat through
the dap4 controls by actively measuring suction pressure via a transducer attached to the suction line
and suction temperature via a thermal transducer strapped to the suction line. The EEV actively adjusts
the orifice size and resulting mass flow of refrigerant to maintain the superheat setpoint. The EEV
maintains more stable system balance and is more energy efficient. With variable capacity systems, an
electronic expansion valve is the solution to handle refrigerant mass flow variations.
Electrical Connection to EEV
The Electric Expansion Valve (EEV) uses an electrical cable assembly with a DIN type connector to
interface with EEV valve stator. The connector is indexed by one large blade connection so that the
connector can only properly mate one way. When it is necessary to make this electrical connection,
this connector can only properly mate in one position as shown in the picture below.
Figure 14 EEV with Electrical Mating Connector
WARNING:
DO NOT
try to mate this connector in any other direction or
attempt to use excessive force to make the electrical connection.
Summary of Contents for gForce Ultra
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