Constraints For Refrigeration - Daikin CO2 Conveni-pack LRYEN10A7Y1 Installer And User Reference Manual

14.5.2 Constraints for refrigeration

LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Capacity class
50
71+112
Restrictions
Keep the following restrictions in mind when you connect indoor units:
Restriction
Minimum air conditioning total capacity
class
Maximum air conditioning total capacity
class
Maximum indoor units that can be
connected
For more information about the possible combinations, see
4
and options" [ 47].
Keep the following restrictions in mind when you connect showcases and blower
coils:
Refrigeration total
capacity
Outdoor unit
Outdoor unit + capacity
up unit
Low load for refrigeration
If the capacity of the showcase connection is 5.8~8.7 kW (40~60%) for 10 HP
(without the capacity up unit), the following restrictions apply:
Restriction
Target evaporating temperature
(refrigeration)
Lower limit of outdoor temperature
Main piping size for all piping from
outdoor unit to first branch
(refrigeration side)
Maximum piping length
Maximum height difference outdoor
unit above indoor unit
Maximum height difference outdoor
unit below indoor unit
Defrosting of refrigeration side
Field setting components
14 About the units and options
|
Individual control with a remote
NOT allowed
Minimum/maximum
Minimum
8.7 kW (60%)
12.6 kW (60%)
Usage range or value
–20°C~–10°C
Ø9.5 mm (liquid side)
Ø12.7 mm (gas side)
Simultaneous defrost
See "DIP
controller
Allowed
162
233
≤4
"14.4 Combining units
Maximum
14.5 kW(100%)
21.0 kW (100%)
–15°C
50 m
5 m
10 m
4
switches" [ 109]
Installer and user reference guide
49