Danfoss Maneurop VTZ Series Instructions Manual page 2

Instructions
Fig. 1
4 Cyl.
Suction pipe selection
R404A Mini riser (A)
-10/+45°C Max riser (B)
Suct. Header (C)
For the application envelopes of the different va-
riable speed compressors and applicable refrige-
• Installation
Make always sure that there is no possibility of
exhaust hot air by-pass from the drive. This will
lead to overheating thermal trip of the inverter.
The wiring of a variable speed system is to be
done in a very professional way.
The main precautions on assembly has to be

4 m/s or more
max. 4 m
max. 4 m
Fig. 4
Suction riser dimension
VTZ038 VTZ054 VTZ086 VTZ121 VTZ171
1/2" 1/2" 5/8"
5/8" 3/4" 7/8"
3/4" 7/8" 1"1/8
Application Envelopes
rant refer to the Danfoss Commercial Compres-
sors dedicated application guidelines.
Short frequency converter recommendations
done in relation with the present drawings.
Generally speaking shielded cables have to be
used all over the frequency converter and va-
riable speed compressor, except network line to
frequency converter.
8510223 P01-A © Danfoss Commercial Compressors March 2006
0.5% slope
U-trap
8 to 12 m/s
0.5% slope
Evaporator
4m/s or more
Fig. 2
IN
OUT
VTZ215 VTZ242
3/4" 7/8" 1"1/8
1"1/8 1"3/8 1"3/8
1"3/8 1"5/8 1"5/8
Fig. 3
1 & 2 Cyl.
A
1"1/8
1"3/8
1"5/8
d
d
d
d
A B
Fig 5
C
B
max. 4 m
Fig 5
Fig 6