5 Installation
Installation manual
16
LMSEY1A09/13 + LMSEY2A19/25
Daikin LMS
4P728170-1 – 2023.03
1
Install the door microswitch (d) at the cold room door. Install it
such that the microswitch is operated when the door is closed.
In case of cable or switch failure, the unit will react as if the door
is opened.
2
Guide the microswitch cable labelled C4 (5 m long) coming out
of the unit condenser over the roof of the cold room towards the
door microswitch (d).
NOTICE
Check the wire labels. The door heater wire is a live wire
(220-240 V), while the microswitch wire is a signal wire.
Swapping the wires will cause serious damage to the unit.
CAUTION
Do NOT push or place redundant cable length into the unit.
3
Fix the wiring to the cold room as needed.
4
Connect the wiring to the NO contact of the microswitch. When
the door is closed, the contact must be closed too.
5.7.2
To install the cold room lamp
The cold room lamp is controlled by the user interface. The user
interface is triggered by the cold room door microswitch (see
"5.7.1 To install the door microswitch"
15]). The lamp switches on
when the cold room door is opened and switches off when the door
is closed.
INFORMATION
This manual only describes installation instructions specific
to this unit. For carrying out mechanical work on the cold
room, the instructions of the cold room manufacturer must
always be followed.
a
c
b
a
Unit evaporator
b
Wire (2 m long)
c
Cold room lamp
1
Install the cold room lamp on the cold room ceiling.
2
Guide the cold room lamp cable labelled C3 (2 m long) coming
out of the unit evaporator towards the lamp.
3
Fix the wiring to the cold room ceiling as needed.
CAUTION
Do NOT push or place redundant cable length into the unit.
NOTICE
The cold room lamp must be suitable for 220-240 V, and
the total load of the control circuit must NOT exceed 4 A.
INFORMATION
For the cold room lamp, usually a LED bulb of 0.1 A is
used, with a maximum 0.3 A.
4
Connect the wiring to the lamp.
5.7.3
To install the door heater
For low temperature applications it is suggested to install a door
heater. It prevents the door from freezing solid.
The choice for the most appropriate door heater is left to the installer
or cold room manufacturer.
NOTICE
The door heater must be suitable for 220-240 V, and the
total load of the control circuit must NOT exceed 5 A.
INFORMATION
The door heater (commercial type) usually has an electric
current of 0.4/0.5 A (depending on the length of the wiring),
with a maximum of 0.7 A.
INFORMATION
This manual only describes installation instructions specific
to this unit. For carrying out mechanical work on the cold
room, the instructions of the cold room manufacturer must
always be followed.
a
d
b
c
a
Unit condenser
b
Wire (5 m long)
c
Wire Label
d
Door heater
1
Install the door heater (d) at the cold room door opening.
2
Guide the door heater cable labelled C2 (5 m long) coming out
of the unit condenser over the roof of the cold room towards the
door heater (d).
NOTICE
Check the wire labels. The door heater wire is a live wire
(220-240 V), while the microswitch wire is a signal wire.
Swapping the wires will cause serious damage to the unit.
CAUTION
Do NOT push or place redundant cable length into the unit.
3
Fix the wiring to the cold room as needed.
4
Connect the wires to the door heater.
5.8
To connect an alarm signal
This option is not pre-wired. The connection has to be made inside
the unit condenser.
1
Open the unit condenser front plate and electrical box cover.
See
"5.3 Opening and closing the unit"
Three cable glands (a, b and c) are provided to bring option cables
into the unit.
2
Guide the cable towards the cable gland, and into the unit.
Secure the cable into the cable gland.
