PEX Installation Manual

61
IM-PF 724596 0416
• If pressure falls over the test period, look for
potential leaks with an approved leak-detect
solution. Once system pressure is completely
relieved and the leak is xed, restart testing
procedure from beginning.
Stage 3: Gradually increase system pressure to
100 psi (approx. 1-min. duration).
• Inspect gauge pressure over next 10-minute
period to verify pressure has not decreased
more than the allowable variance noted in
Table 18.1.
• If pressure variance allowed is not exceeded,
the system test has passed.
• If pressure decreases more than the
allowable variance, the test has failed.
Apply approved leak-detect solution (see
“18.3 Leak detection” below) on tting
and/or manifold connections to isolate the
location of the leak. Once system pressure is
completely relieved and the leak is xed, start
testing procedure from beginning.
Completing the air test:
 Depressurize system.
• Use of the same safety equipment applies to
these steps.
• Slowly bleed off any remaining air pressure
from system (approx. 1-min. duration).
• Notify other trades the test is complete and
work area is safe to occupy.
• Document the time and date test was
completed and the pressure and duration of
the test.
18.3 Leak detection
Viega has identied the leak detect solutions listed
below as being compatible for use with Viega PEX
Press system components. Consult leak detect
manufacturer for proper application and product
instructions. To determine the compatibility of other
leak detect solutions not listed below, contact
Viega Technical Services prior to their use.
• megabubble
®
Leak Detector
• Oatey
®
All Purpose Leak Detector
• Snoop Liquid Leak Detector
As an alternative leak detect, a mixture of Original
Palmolive Green™ dishwashing soap (#46100-
46200) or Palmolive Ultra™ (#356140 or 46128)
mixed with potable water at a ratio of two ounces
of soap to one gallon of water (mix Ultra at a ratio
of 1.5 ounces per gallon) may be used.
NOTE: If the solution does not show a leak on
any of the caps or ttings, isolate the ManaBloc
by turning the valves to the “OFF” position,
repressurize if needed and apply the same solution
to the ManaBloc manifold components.
18.2 Air testing
Air testing of a Viega PEX plumbing system shall
use the checklist provided to ensure safety.
It is the responsibility of the installer to
read and understand the below pressure
testing criteria and all safety precautions.
Compressed air can store extremely high
energy as compared to compressed water
systems. Failure to follow these steps could result
in personal injury, death and/or property damage.
Preparing for air pressure test:
 Notify other trades that air pressure test will
be conducted on the plumbing system. Only
qualied personnel should be present during the
system testing.
 Use only compressed air or nitrogen that is free
of any kind of lubricating oils.
 Do not conduct pressure testing overnight or if a
large temperature change is anticipated.
 Before pressurizing the system, conduct a visual
inspection to ensure proper connections have
been made throughout the plumbing system.
 All personnel involved in the pressure testing
shall wear, at a minimum, eye and hearing
protection. It is recommended the person
applying the pressure to the system wear a full
face shield.
 Only Viega PEX plumbing system components
(tubing/ttings/manifolds) shall be pressure
tested. All other system components (water
heaters and xtures) shall be isolated from the
pressure test.
 Contact the inspector and schedule the pressure test.
Pressurizing the system:
 Verify no other trades are present prior to
starting the pressure test. Only qualied testing
personnel should be present during pressure test.
 Introduce pressure into the system as outlined in
the stages below.
Stage 1: Gradually increase system pressure to 10
psi (approx. 30-sec. duration).
• Wait for 10 minutes before inspecting
pressure gauge.
• If pressure holds steady, continue to Stage 2.
• If pressure falls over the test period, look for
potential leaks with an approved leak-detect
solution. Once system pressure is completely
relieved and the leak is xed, restart test
procedure.
Stage 2: Gradually increase system pressure to 50
psi (approx. 1-min. duration).
• Wait for 10 minutes before inspecting
pressure gauge.
• If pressure holds stable, continue to Stage 3.