15
5461 889 - 16
Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
Connections
(continued)
Boiler Connections
Gas piping pressure test
When performing the gas piping pressure test, ensure the
following requirements are met.
1. Isolate the boiler from the gas supply piping system
using the individual manual shutoff valve during
pressure tests equal to or less than ½ psig (14 “w.c.)
2. The boiler and its individual shutoff valve must be
disconnected from the gas supply piping system
during any pressure testing of that system at test
pressures in excess of ½ psig (14 “w.c.)
3. Perform leak test.
Use approved liquid spray solution for bubble test.
Ensure that no liquid is sprayed on any electrical
components, wires or connectors. Do not allow
leak detection fluid to contact gas valve regulator
or regulator vent opening.
4. Correct any and all deficiencies.
5. Remove air from gas line.
IMPORTANT
½ psig = 14 “w.c.
WARNING
Never check for gas leaks with an open flame.
WARNING
Exposing boiler gas pressure regulator and gas valve to
extreme pressures renders warranty null and void.
Flue gas connection
Connect the balanced flue.
See Venting Installation Instructions.
