Boiler Installation
7
Logano G125 BE - Specifications subject to change without notice.
33
7.4
Filling and Checking for Water Leaks
The boiler must be tested hydrostatically for leaks.
Check the entire system for leaks prior to placing the
system in operation to prevent leaks during operation.
Perform the hydrostatic test at 1.5 times the expected
operating pressure and in accordance with local code
requirements:
z
Plug relief valve connection (
Î
Fig. 23, page 31)
and all boiler openings with plugs. (Not supplied).
z
Close the ball valve to the expansion tank.
z
Open automatic feed valve.
z
Fill the boiler slowly with the feed valve.
Fig. 26
Pressure and temperature gauge
CAUTION!
SYSTEM DAMAGE
Be careful not to expose the system to ex-
cessive test pressures during the hydro-
static test as it can damage pressure,
control and safety components.
z
Make sure that all pressure, control and
safety components are NOT installed
during the hydrostatic test.
CAUTION!
SYSTEM DAMAGE
due to excessive temperatures.
When a hot system is filled with cold water,
large temperatures stresses can occur.
The boiler can develop a leak under these
circumstances.
z
Fill the system only when the boiler is
cold (The fill water temperature can not
exceed 100 °F).
z
Water quality must comply with quality
guidelines and fill water conditions
must be recorded.
Maximum operating pressure
Maximum test pressure
30 psi
(based on supplied
relief valve)
45 psi
58 psi
(based on 50 psi re-
lief valve)
75 psi
