Installing Boiler Safety Devices; Boiler Connections - Viessmann B2TB004 Installation Instructions Manual

Boiler Connections

Side Piping Installation
Left side installation
Right side installation
28
(continued)
1. Remove the cap from the factory installed gas line.
2. Install the supplied tees, drain valves and gas valve

Installing boiler safety devices

1. Remove the pressure relief valve, drain valve and
2. Apply sufficient amount of pipe sealant to both ends
3. Install pressure relief valve and Isolation valve and
4. Install discharge pipe on pressure relief valve in such
1. Remove the cap from the factory installed gas line.
2. Install the supplied tees, drain valves and gas valve
Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
as shown.
fittings from the box.
of all pipe fittings and install onto tees.
tighten them.
a way that...
- the end of the pipe is not threaded.
- the pressure relief discharge pipe extends to a floor
drain and ends approximately 6 in. (150 mm) above
the drain.
Ensure that...
- there is no shutoff valve installed in the discharge pipe.
- discharge pipe diameter is not reduced.
- discharge is not piped to outdoors.
as shown.