Installation Of Water Connections; Installing B-Kit - Buderus Logano GB125/22 BE Installation And Service Instructions Manual

5
Boiler installation
5.4

Installation of Water Connections

Caution: due to leaking connections.
V Install the piping connections to the boiler
without having undue stress on the near
boiler piping.
5.4.1

Installing B-Kit

The relief valve and pressure/temperature gauge are
installed into the supply manifold as described below:
V Use the 1-1/4" BSP x NPT conversion nipple and
install the unmarked end into the supply (VK) connec-
tion of the boiler. This side also has longer thread
length and the thread is straight (BSP).
V The conversion nipple is marked on the 1-1/4" NPT
side with pink color and a NPT stamping in the pipe.
V Install 90° elbow 1-1/4" on conversion nipple.
V Install supply manifold into elbow and orient in
desired direction (Fig. 16).
V Install 90° elbow, relief valve and pressure/temperature
gauge.
The pressure relief valve can only be installed
after the hydrostatic test (Chapter 5.5,
page 26) has been completed.
Use the supplied ¾" 90° elbow to ensure
that the relief valve discharge is installed hor-
izontally.
We recommend, especially in older, large vol-
ume systems, to install a dirt filter in the return
connection to the boiler to reduce waterside
debris build-up.
24 Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.
Fig. 15 Measuring thread length on 1-1/4" conversion
nipple
Fig. 16 B-Kit Installation
1 90 degree 1 ¼" NPT elbow
2 (Conversion) nipple
3 Supply manifold
4 Pressure/temperature gauge
5 Relief valve
6 90 degree ¾" NPT street elbow