Daikin WMC Instruction Manual download pdf (Page 36)

IOM 1210-1 • MAGNITUDE

MODEL WMC CHILLERS 36 www.DaikinApplied.com

operaTIon

MOTOR Setpoint Screen

Figure 43: MOTOR Setpoint Screen

Table 9: MOTOR Setpoint Settings

Description No. Default Range Password Comments

Nominal Capacity 10 100 0 to 9999 Tons T

Determines when to shut off a compressor. ONLY applies to multi-chiller

setup.

Maximum LWT Rate 9 0.5 °F/min 0.1 to 5.0 °F/min M Inhibits loading if LWT change exceeds the setpoint value

Minimum LWT Rate 8 0.1 °F/min 0.1 to 5.0 °F/min M Additional compressor can start if LWT change is below setpoint

Soft Load Ramp Time 7 5 min 1 to 60 min M Time period to go from initial load point (% RLA) set in SP 5 to 100% RLA

Initial Soft Load Limit 6 40% 10 to 100% M Initial amps as % of RLA, Uses SP4 & 6

Soft Load Enable 5 OFF OFF, ON M Soft load on or off, Uses SP6 & 7

Nameplate RLA * 4 Dependent on dataplate T RLA value from compressor nameplate

Maximum Amps 3 100% 10 to 100% T

% RLA above which loading is inhibited (Load Limit) SP + 5% unloads

compressor

Minimum Amps 2 40% 5 to 80% T % RLA below which unloading is inhibited

Demand Limit Enable 1 OFF OFF, ON O

ON sets %RLA at 0% for 4 mA external signal and at 100% RLA for 20 mA

signal OFF – signal is ignored

NOTE: Setpoints that have a technician level password (T) should only be changed by a McQuay International technician.

Contact a McQuay International service representative for more information.

CAUTION

* Chiller Nameplate RLA MUST match chiller dataplate per compressor.

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Daikin WMC Instruction Manual Page 36