Connecting The Heating System - Buderus Logano plus GB312 Installation Manual

6.9

Connecting the heating system

This section explains how the boiler is connected to the
heating system. The individual steps involved are:
– General safety instructions
– Installing B-Kit
– Connecting the central heating supply and return
– Installing the condensate drain
Examples for possible hydraulic installations are given in
the hydraulic schemes on page 113, 114 and 115.
6.9.1 General safety instructions
Caution: Risk of boiler damage due to mois-
ture.
V Protect the individual components of the
control system and the burner from damp
(dripping water, water spray, rain) during
installation, operation and servicing (e.g.
pump replacement, programmer replace-
ment, etc.
Caution: Risk of system damage due to
overheating as a result of lack of water.
V Make sure that if the boiler is located
above the level of the heating system, it is
fitted with a low-water cut-off.
V The low-water cut-off must be used when
the boiler is installed (
Caution: Risk of system damage due to high
temperature variations in the heating system.
V If the boiler is operated in conjunction with
an air conditioning system, it is essential to
ensure that the pipes for the refrigerant
fluid are connected in parallel with the
boiler system using suitable valves to pre-
vent the refrigerant from entering the boil-
er.
V The piping system of a boiler connected to
the heating coils of hot-air heating sys-
tems that may be exposed to the circula-
tion of cooled air must be fitted with a
flow-control valve or some other automatic
system for preventing the boiler water
from circulating during the cooling cycle.
Logano plus GB312 - Technical specifications are subject to change without prior notice
Fig. 22).
Fig. 22 Low-water cut-off
1
2
3
4
Installing the boiler
3
1
2
2
1
Boiler
Radiator
Heating system with low-water cut-off
Heating system without low-water cut-off
6
2
2
4
2
2
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