Ochsner 288800V, Design And Installation Manual

Page: 19 / 56

00_200_202_03_01_002_AIR85-EN | www.ochsner.com 19
Machine-specific engineering and preparation
8.2 Refrigerant lines
When laying the refrigerant lines, observe the following
guidelines:
► No bends with centre line radii smaller than 2.5 x the
diameter of the pipe
► Refrigerant lines must be protected from damage in
normal operation and during maintenance, service
work and repair
► Refrigerant lines must not be routed through rooms
that do not comply with the requirements for the mini-
mum area of clear floor space in the installation room
(see page 20 , Minimum area of clear floor space in
the installation room)
8.2.1 Line lengths and height differentials
Outdoor unit positioned higher
A + B + C
(sum of line lengths)
D
(max. height differ -
ential)
AIR 85 16 m ≤ 5 m
Outdoor unit positioned lower.
A
(max. height differential)
AIR 85 ≤ 0.5 m
Maximum connection line height
8.2.2 Material requirements
The pipe diameter data for refrigerant lines shown below
applies, provided the following is observed:
► Maximum 8x90° bending radii
► Use suitable fittings for bends
► Bending radii of ≥ 1 m are treated as straight runs
Suction gas line
Copper pipes
Requirement Diameter
AIR 85 R290 (hard, in rods) to EN
12735-1
42x2 (1x)
Fittings
Requirement
AIR 85
Max. permissible operating pressure 45 bar
Max. permissible temperature 120°C
Used with refrigerant R410A
Information
The insulation used for the suction gas line must
comply with the requirements for high temperature
applications.
Liquid line
Copper pipes
Requirement Diameter
AIR 85 R220 (soft, in rings) to EN
12735-1
22x1 (1x)