Perform Pressure Test On Boiler - Viessmann VITOROND 100 Installation And Service Instructions Manual

Connections
Safety Connections and Pressure Testing

Perform pressure test on boiler

20
(continued)
The boiler must be leak tested before
being placed in operation. Before boiler
is connected to piping or electrical
power supply, it must be hydrostatically
pressure tested with a maximum of 1½
times the maximum operating pressure
of the boiler.
1. After installing safety devices
(above), install temporary cap on ¾"
nipple extension (nipple for pressure
relief valve mounting).
2. Cap supply and return connections.
3. Connect ½" garden hose to boiler
drain valve and fill boiler slowly until
pressure gage indicates max. 68 psi /
465 kPa.
4. Maintain pressure for 15 minutes.
During time of pressure testing, do
not leave boiler unattended.
5. Inspect all pipe joint connections, the
safety devices (Safety Header, if
applicable), and boiler base with
flashlight for leaks.
6. After 15 minutes, release water
pressure from boiler by opening boiler
drain valve slowly, remove caps from
supply and return connections as
well as ¾" cap from safety nipple,
and install pressure relief valve
immediately instead of ¾" cap.
After boiler has passed pressure test,
proceed with installation.
Max. allowable operating pressure
45 psig / 310 kPa
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Max. allowable testing pressure
68 psig / 465 kPa
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Max. allowable boiler temperature
248°F / 120°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARNING
Exposing the boiler to pressures and
temperatures in excess of those listed
will result in damages, and will render
warranty null and void.