Pressure Testing - Viessmann Vitorond 100 VR1 Series Installation And Service Instructions Manual

Vitorond 100, VR1-22 to -33 Installation and Service

Pressure Testing

Perform pressure test on boiler
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 (4.65 bar).
WARNING
Exposing the boiler to pressures and temperatures
in excess of those listed will result in damage and
will render warranty null and void.
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 (3bar)
Max. allowable testing pressure...........68 psig (4.65 bar)
Max. allowable boiler temperature..........248° F (120° C)
Connections
23