Install Instructions

Viega IM-MTL 0612
724607
9
For installations where the minimum
distance is 0, it is particularly important
to ensure the correct insertion depth of
the tubing into each fitting.
5.2 Pressing in Tight Quarters
The minimum distance between piping,
or the piping and the wall/ceiling
construction, must be taken into
consideration in the planning phase
for a problem-free work process. The
following figures illustrate the clearance
requirements for the jaws and fittings
and the procedure for pressing fittings
in tight quarters.
5. GENERAL INSTALLATION INSTRUCTIONS
5.1 Minimum Distance
Between Fittings
To prevent distortion of the pipe, fittings
require a minimum distance between
fittings (refer to chart below). Failure to
provide this distance may result in an
improper seal.
Note: ProPress systems include XL
(Bronze) and XL-C (Copper) fittings.
All other systems denote XL fittings as
the same material as the piping (i.e.,
Sanpress Inox XL fittings are stainless
steel; Seapress XL fittings are copper
nickel). XL and XL-C sizes are
2-1/2" – 4".
minimum
distance
a
b
Tube
Diameter
a minimum b minimum
inch mm inch mm
1/2" 3/4 19 2 50
3/4" 7/8 22 2-3/8 60
1" 7/8 22 2-3/4 70
1-1/4" 1-1/8 29 3-3/8 85
1-1/2" 1-3/4 45 4 100
2" 2 50 4-1/2 115
a
c
b
Minimum distance requirements for
press jaws between pipes and wall/
floor structure
.
Tube
Diameter
a
minimum
b
minimum
c
minimum
inch mm inch mm inch mm
1/2" 7/8 23 1-3/8 35 2-1/2 64
3/4" 1 26 1-1/2 38 2-1/2 64
1" 1-1/8 29 1-3/4 45 3 76
1-1/4" 1-1/4 32 2-1/4 57 3-1/8 80
1-1/2" 1-7/8 48 2-1/2 64 3-3/4 95
2" 2-1/8" 54 3-1/8 80 5 127
Figure 5.1
Minimum distance between two Viega
ProPress
®
press connections
1/2" to 2"
Tubing
Diameter
Minimum
Distance
(mm)
Minimum
Distance
(in)
1/2" 0 0
3/4" 0 0
1" 0 0
1-1/4" 10 7/16
1-1/2" 15 5/8
2" 20 3/4
Minimum distance between two Viega
ProPress
®
XL-C
copper press connections
2-1/2" to 4"
Tubing
Diameter
Minimum
Distance
(mm)
Minimum
Distance
(in)
2-1/2" 15 5/8
3" 15 5/8
4" 15 5/8
Minimum distance between two
Viega ProPress XL
®
press connections
2-1/2" to 4"
Tubing
Diameter
Minimum
Distance
(mm)
Minimum
Distance
(in)
2-1/2" 0 0
3" 0 0
4" 0 0
5.3 Minimal Space
Requirements for the
Press Fitting Process
in Front of and Behind
from Components
Ensure that the space required for
Viega system pressing tools is available
if press fittings will be executed
immediately upstream and downstream
from ceiling penetrations.