Boiler Installation
7
Logano G125 BE - Specifications subject to change without notice.
31
7.3
Installation of Water Connections
7.3.1 B-Kit Installation
The relief valve and pressure/temperature gauge are in-
stalled into the supply manifold as described below:
z
Use the 1-1/4" BSP x NPT conversion nipple and in-
stall 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).
z
The conversion nipple is marked on the 1-1/4" NPT
side with pink color and a NPT stamping in the pipe.
z
Install 90° elbow 1-1/4" on conversion nipple.
z
Install supply manifold into elbow and orient in de-
sired direction (Fig. 23).
z
Install 90° elbow, relief valve and pressure/tempera-
ture gauge.
CAUTION!
SYSTEM DAMAGE
due to leaking connections.
z
Install the piping connections to the
boiler without having undue stress on
the near boiler piping.
Fig. 22
Measuring thread length on 1-1/4" conversion nipple
NPT
R1
1/4"
(Europe)
1
1/4"
NPT(USA)
VK
Fig. 23
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
1
3
4
5
6
2
NOTICE
The pressure relief valve can only be in-
stalled after the hydrostatic test
(
Î
Chapter 7.4, page 33)
Use the supplied ¾" 90° elbow to ensure
that the relief valve discharge is installed
horizontally.
NOTICE
We recommend, especially in older, large
volume systems, to install a dirt filter in the
return connection to the boiler to reduce
waterside debris build-up.
