Danfoss Optyma Trio HU2900D50, Application Manual, Page: 13 / 20

Installation and Operation
4.3 Mechanical Installation
• The installation of the unit must comply with
all the current safety local regulations, under all
circumstances.
• The unit must be installed securely on a bracket
or a steady and secure base, with the use of the
vibration shock absorbers with mounting bolts
provided together with the unit. See figure 7.
• Remove the nitrogen load slowly through the
schrader valves located in the suction GBC
service valves and liquid line.
• Connect the unit to the system as quickly as
possible to avoid the oil contamination from
moisture present in the air.
• Avoid the penetration of solid residues derived
from the tubing burr and others.
• Weld the tubing with proper material and always
use nitrogen gas flow to make the environment
inert, avoiding internal carbonation and forming
of residue that may damage the system.
• It is recommended to isolate the suction tubing
with insulation thickness that meets the specific
project conditions for the installation.
• For the initial start-up, the oil level must be
verified and completed with a parcial load, with
the oil provided together with the condensing
unit. If more oil is required, acquire from an
oil distributor the oil of the same brand and
specification provided with the condensing unit.
• After the operation, the sight glass of the oil
compressor must be re-checked and the oil load
completed to adjust to the installation tubing
length, if necessary.
• It is recommended to put the oil through the
service valve of the oil separator/trap through
a vacuum pump connected to the high pressure
line.
• The refrigerant charge must be done through the
liquid’s tank service valve or through the schrader
of the GBC service valve of the liquid line.
W
[mm]
X
[mm]
Y
[mm]
Z
[mm]
Chassis - B 1092 1092 1000 1500
Chassis - C 1092 1092 1000 1900
Note: The specification of the chassis for each model can be found in section “3.6 Dimensional Data” in page 11.
Figure 6
13
FRCC.PC.053.A1.02
Application Guide