4 About the unit and options
Installation manual
8
LMSEY1A09/13 + LMSEY2A19/25
Daikin LMS
4P728170-1 – 2023.03
o
Refrigerant pipes (hot)
p
Drain connection
q
Inverter PCB with firewall
r
User interface
s
Compressor
t
Electrical box (with firewall)
u
Dryer
v
Condenser
a b
d
c
c
f
e
g
a
Cold room
b
Door microswitch (accessory)
c
Door heater (accessory)
d
Cold room door
e
Cold room lamp (accessory)
f
Unit condenser
g
Unit evaporator
4.4
Combining multiple units
When multiple units (maximum of 5) are combined within one cold
room, they operate according to the primary/secondary principle.
Advantages:
▪ Higher cooling capacity.
▪ Redundancy in case of unit breakdown.
▪ Better airflow.
a
b
b
b
b
a
Primary unit
b
Secondary unit
The main PCB allows easy parallel connection between one primary
unit and the secondary units.
a
b
b
b
b
c
a
Primary unit
b
Secondary unit
c
Router (option)
The primary unit performs all monitoring and control functions.
The system can be connected to the internet through the router
(optional).
To install connections and set parameters, see
15].
4.5
Possible options for the unit
INFORMATION
Certain options may NOT be available in your country.
Three cable glands (a, b and c) are provided to bring the option
cables into the unit.
c
a b
d
e f
a
Option
b
Option
c
Option
d
Door heater, pre-wired (5 m)
e
Power supply, pre-wired (5 m)
f
Door micro switch, pre-wired (5 m)
Insulation pad
The insulation pad is mandatory for wall installation. See
c
b
a
d
d
a
Flat washer (×2)
b
Spring washer (×2)
c
Metric bolt M8 (×2)
d
self-adhesive gasket
e
Insulation pad assembly
Door microswitch
To reduce frost on the evaporator, the door microswitch interrupts
the unit operation when the cold room door is open. It also controls
the cold room lamp. The door microswitch is an accessory. See
"5.7.1 To install the door microswitch"
Door heater
For low temperature applications it is suggested to install a door
heater. It prevents the door from freezing. The choice for the most
appropriate door heater is left to the installer or cold room
manufacturer. Sometimes the door heater is already included in the
pre-fabricated door kit. See
"5.7.3 To install the door heater"
16].
INFORMATION
The door heater accessory is only necessary for low
temperature applications.
