Heating Peak-Cut Control - Daikin CTX Series Service Manual

DAMA-SM-21-003
3.7

Heating Peak-cut Control

Outline Heat Pump Only
During heating operation, the signals being sent from the indoor unit allow the operating
frequency limitation and prevent abnormal high pressure. (The signal from the indoor unit must
be divided as follows.)
Details
Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 sec. from
operation start.
Control in Each Zone
The heat exchange intermediate temperature of indoor unit controls the following.
 Frequency control in each zone
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
Functions and Control
B°C (°F)
C°C (°F)
D°C (°F)
Heat exchanger
thermistor
temperature
Zone
When indoor coil temperature stop zone, the compressor stops
The upper limit of frequency decreases
The upper limit of frequency is kept
The upper limit of frequency increases
The upper limit of frequency is cancelled
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A (°C) 62.5
55.0
B (°C)
C (°C) 54.0
D (°C) 52.0
E (°C) 45.0
A (°F) 144.5
B (°F) 131.0
C (°F) 129.2
D (°F) 125.6
E (°F) 113.0
Control Specification
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
Control
A°C (°F)
E°C (°F)
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