To Install The External Drain Pipe; To Connect The Power Supply; Installing Multiple Units; To Install Multiple Units - Daikin LMS Serie Installationsanleitung

5 Installation
5.4.7

To install the external drain pipe

Frost gradually builds-up on evaporator coils during operation. The
unit uses a hot refrigerant to defrost the evaporator coils. Hot
refrigerant gas passes through the evaporator coil and melts the
frost. The melt water drips into the evaporator drain pan, where the
drain pan defrost coil prevents re-icing. It then flows via the drain
pipe (a) to the overflow tank (c) in the condenser part of the unit.
Most of the time this water evaporates in the overflow tank (c) that
has hot refrigerant pipes (d) going through it. This also works as a
"water cooling system" for hot refrigerant at the same time.
In case of an overflow, the external drain connection (e) must be
connected to an external drain pipe or hose (g).
INFORMATION
Fresh meat, fish or vegetables produce a lot of humidity.
Already frozen products produce little humidity.
INFORMATION
The internal drain pipe has a siphon, which ensures that
warm air from the unit condenser cannot escape to the unit
evaporator.
a Drain pipe (internal)
b Overflow opening
c Overflow tank
d Hot refrigerant pipes
e External drain connection (Ø 14 mm)
f Pipe clamp
g Drain pipe or hose (external)
1 Install a pipe clamp (f) over the drain pipe (or hose) (g).
2 Slide the drain pipe (g) with the pipe clamp (f) over the external
drain pipe connection (e).
3 Tighten the pipe clamp (f).
4 Make sure condensation water can be evacuated properly
through the drain pipe:
▪ The drain pipe should run as straight as possible down the
cold room wall, with no kinks or bends.
▪ Secure with screws, tie wraps and clamps as required.
NOTICE
Incorrect connection of the drain hose might cause leaks,
and damage the installation space and surroundings.
Installation manual
14
a b c d e f g
5.5

To connect the power supply

The supply cable for models LMSEY1A09+13 has a ground, line and
neutral conductor. The supply cable for models LMSEY2A19+25 has
one ground, three line and one neutral conductors. The supply cable
is labelled C1.
NOTICE
In case of a three-phase power supply the compressor can
break down if the wires are not connected correctly.
A number to identify the phases is printed on the surface of
the wire insulation. The meaning of the numbers is the
following: 1=L1, 2=L2, 3=L3, 4=neutral.
1 Strip insulation (20 mm) from the wires.
2 Slightly twist the end of the conductor to create a "solid-like"
connection.
3 Connect to the circuit breaker (Q1). The circuit breaker for
models LMSEY1A09+13 must be a single-phase circuit
breaker, whereas the
LMSEY2A19+25 must be a three-phase circuit breaker.
4 Insert the wires into the terminals and secure them.
CAUTION
Do NOT push or place redundant cable length into the unit.
WARNING
The appliance MUST be installed in accordance with
national wiring regulations.
The power supply MUST be clamped to the bracket using field
supplied clamp material to prevent external force being applied to
the terminal. The green and yellow striped wire MUST be used for
earthing only.
5.6

Installing multiple units

5.6.1

To install multiple units

To install each individual unit, see "5 Installation" [ 4 9].
NOTICE
Respect the minimum distance between units, see
"5.1 General installation guidelines" [ 4 9].
5.6.2

To interconnect multiple units

INFORMATION
All the unit displays must be connected to their main PCB
controllers.
1 Open the unit condenser front plate and electrical box cover.
See "5.3 Opening and closing the unit" [ 4 10].
2 Connect the BMS connector (J4) of the secondary unit:
▪ for LMSEY1A09+13AVM01: to the fieldbus connector (J5) of
the primary unit.
▪ for LMSEY2A19+25AYE01: to X6M of the primary unit with a
shielded cable.
circuit breaker for models
LMSEY1A09/13 + LMSEY2A19/25
Daikin LMS
4P728170-1B – 2023.07