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Step-by-step checklist for inspecting the unit, verifying model/voltage, and connecting power supply and grounding.
Details on electrical connections to the cabinet, knockouts, and required receptacles matching factory cords.
Information on control wiring, the absence of a reversing valve, and thermostat settings for heat/cool modes.
Steps for mounting the chassis, connecting supply/return hoses and condensate line, and performing leak tests.
Description of DX cooling with water-cooled refrigeration and hydronic heating with hot water coil, including compressor behavior.
Details on the two stages of heating operation, thermostat settings, and how suite temperature affects operation.
Information on operational time delays and recommendations for thermostat settings during occupancy and absence.
Description of the unit's relay outputs (K1-K6) and digital inputs with LED indicators for various functions.
Explanation of the four analog inputs provided by thermistors (Ta, Tr, Tw, Co) for temperature and level monitoring.
How thermostat calls for 'G', 'W', or 'Y' activate fan operation on low or high speed.
Explanation of how a 'W' call activates the fan at low speed and energizes the heat relay K2.
Sequence of checks for compressor startup, including power ON timer, anti-recycle timer, and pressure switches.
Malfunctions that cause compressor shutdown during cooling operation, such as head pressure exceeding limits.
Description of control algorithms to prevent cycling, including Double Call and Reverse Cycle Call.
Key steps for commissioning and start-up, including system flushing, fluid temperature, and pH balance.
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General