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When brazing
Follow the brazing instructions in the sight
glass manual.
6.4.9
Guidelines when installing a dryer
NOTICE
Do NOT operate the unit without a dryer installed.
Possible consequence: Equipment malfunction.
Install a dryer on the liquid piping:
Dryer type
80 g (100% molecular sieve equivalent)
(DML083/DML083S: Danfoss made)
Where/how
Install the dryer after the sight glass, as near to
the outdoor unit as possible. Install
horizontally.
a Sight glass
b Dryer
When brazing
Follow the brazing instructions in the dryer
manual.
Remove the dryer cap immediately before
brazing (to prevent absorption of airborne
moisture).
If dryer paint burnt during brazing, repair it. For
repair paint details, contact the manufacturer.
Flow direction
If the dryer specifies a flow direction, install
accordingly.
6.4.10
To connect the refrigerant piping to the
outdoor unit
NOTICE
Be sure that the field installed piping does not touch other
pipes, the bottom panel or side panel. Especially for the
bottom and side connection, be sure to protect the piping
with suitable insulation, to prevent it from coming into
contact with the casing.
1 Do the following:
▪ Remove the service cover (a) with screw (b).
▪ Remove the piping intake plate (c) with screw (d).
a
b
c
d
2 Choose a piping route (a, b, c or d).
d
a
c
b
LRMEQ3+4AY1
Air-cooled refrigeration condensing unit
4P442131-1 – 2016.03
3 If you have chosen the downwards piping route:
4× Ø6 mm
4 Do the following:
5 Reattach the service cover and the piping intake plate.
a
b
6 Seal all gaps (example: a) to prevent snow and small animals
6.4.11
Liquid piping branching
▪ Use Y-joints.
▪ Install horizontally. This will prevent an uneven refrigerant flow.
Gas piping branching
▪ Use T-joints.
▪ Install branched piping above main piping. This will prevent
▪ Drill (a, 4×) and remove the knockout hole (b).
▪ Cut out the slits (c) with a metal saw.
a
b
c
c
▪ Connect the liquid pipe (a) to the liquid stop valve.
▪ Connect the gas pipe (b) to the gas stop valve.
b
a
from entering the system.
a
WARNING
Provide adequate measures to prevent that the unit can be
used as a shelter by small animals. Small animals that
make contact with electrical parts can cause malfunctions,
smoke or fire.
NOTICE
Make sure to open the stop valves after installing the
refrigerant piping and performing vacuum drying. Running
the system with the stop valves closed may break the
compressor.
Guidelines when connecting piping
branching
A
≤30°
A
a
a
Y-joint for branching
refrigerant oil from flowing back to non‑operating indoor units.
a b
a
Main piping
6 Installation
Installer and user reference guide
17
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Troubleshooting
