Installation/Maintenance Guide

7
Installation
Logano G201 - Subject to technical modifications.
28
7.2 Making the water connections
7.2.1 Installing B-Kit
The pressure relief valve [6] and the pressure/tempera-
ture gauge [1] are mounted on the boiler supply VK using
the return manifold [5] (included in B-Kit).
V Seal the double nipple [2] with R 1¼ " threads NPT.
V Seal 90° 1¼ " NPT street elbow [3] on double nipple.
V Seal supply manifold [5] on 90° 1¼ ” NPT elbow [3].
Fig. 25 Installing B-Kit
1 Pressure/temperature gauge
2 Double nipple
3 90° elbow
4 90° elbow on supply manifold
5 Supply manifold
6 Pressure relief valve (30 psi)
V Seal the temperature/pressure gauge [1] on the sup-
ply manifold.
7.2.2 Connecting the water lines
V Connect the return to the connection RK.
V Connect the supply to the supply manifold.
V Seal the fill & drain valve with sealing twine.
V Connect the fill & drain valve to the connection EL
(Æ Fig. 26).
Fig. 26 Sealing the fill & drain valve
1 Fill & drain valve
Caution: Risk of system damage due to
leaking connections!
V Support the pipes to the boiler to prevent
them from being under stress.
Do not install the pressure relief valve [6] until
the leak test (Æ Chapter 7.3, page 29) has
been completed.
The pressure relief valve must be installed in
a vertical position.
Caution: System damage due to condensa-
tion and tar formation!
The life span of the boiler can be compro-
mised.
V The return temperature must be at least
131 °F, and the boiler water temperature
between 176 and 194 °F.
V Install a thermostatic valve that prevents
the return flow temperature from dropping
below 131 °F (return temperature boost-
er).