Daikin RZQ100B8V3B Service Manual page 140

Outdoor Unit Functional Concept
1
Frequency
restriction in
cooling
2
3
4
5
Heating
2–56
Upper limit
frequency
Lower limit
frequency
Upper limit
frequency
Lower limit
frequency
Upper limit
frequency
Lower limit
frequency
High outdoor ambient (overload conditions):
In heating overload conditions, the outdoor fan speed will be adapted to secure the differential
pressure between high and low pressure.
•Hp-Lp < 0.39MPa
OR
•Compression ratio
< 1.8 (RZQ71)
•Hp > 3.43MPa
Outdoor unit fan
–1 step/30 sec
Only the fan speed will be adapted in heating overload conditions.
No adjustments to the compressor frequency will be made.
Normal control
Used indoor unit
Wall mounted indoor
Other than wall mounted
indoor
---
≤
Ta 20°C
71
109Hz
48Hz
≤
Ta -8°C
71
109Hz
62Hz
Normal operation
OR
•Hp-Lp > 0.59MPa
•Compression ratio > 2.2
(RZQ71)
•Hp < 3.33MPa
100
71
109Hz 112Hz
169Hz 174Hz
38Hz 41Hz
≥
Ta 21°C
100
125/140
112Hz 139Hz
72Hz
≥
Ta -7°C
100
125/140
112Hz 139Hz
72Hz
•Hp-Lp > 0.69MPa
•&
•Compression ratio > 2.4 (RZQ71)
•OR
•Hp-Lp > 1.08MPa
•&
•Compression ratio > 3.2 (RZQ71)
•&
•Hp < 3.2MPa
•&
•Outdoor unit fan = 8 step
•OR
•HP < 2.75MPa
•LP<0.05MP (RZQ71)
•LPS activates (RZQ100~140)
Outdoor unit fan
+1 step/30 sec
Part 2 – Functional Description
ESIE05-03
125/140
139Hz