Daikin EUWA/Y5-30HB/C(Z) - Thermostat Control

ESIE98–06A Functional Control
Part 2 – Functional Description 2–11
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2
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5
1
1.6 Thermostat Control
Two different
thermostat controls
The thermostat control in chiller types EUWA/Y5-10HB(Z) differs from that in chiller types
EUWA/Y15-30HC(Z).
Functional diagram
EUWA/Y5-10HB(Z)
Controller
EUWA/Y5-10HB(Z)
The limit values of the step difference are given below:
Functional diagram
EUWA/Y15-30HC(Z)
The figure below shows the thermostat parameters for chiller types EUWA/Y15-30HC(Z):
Controller
EUWA/Y15-30HC(Z)
Screen 3 of the user settings menu provides the ability to modify the thermostat parameters:
c: cooling set point
d: heating set point
c d
compressor
ON
OFF
inlet water temperature
Description Lower limit Upper limit Step Default
step difference 0.3 19.9 0.1 3.0
c
ab
d
Step 0
Step 1
Step 2
Step 3
inlet water temperature
a: step length
b: step difference
c: cooling set point
d: heating set point
Line n° Display Description
Lower
limit
Upper
limit
Step Default
1 THERM. SETTINGS screen title
2 STEPS number of thermostat
steps
1312
2 STPL (°C) step length (a) 0.4 2.0 0.1 1.5
3 STEPDIFFERENCE (°C) step difference (b) 0.2 0.8 0.1 0.5
4 LOADUP (s) load up time 15 300 1 180
4 LOADDOWN (s) load down time 15 300 1 20