Installation Location; Quality Of The Heating Water; Pipework Quality; Combustion Air Quality - Bosch Condens 7000 F Installation And Maintenance Instructions For The Contractor

Regulations
3.5

Installation location

NOTICE:
Frost damage!
▶ Install the heating system in a frost-free room.
DANGER:
Risk of fire through flammable materials or liquids.
▶ Never store flammable materials or liquids in the immediate vicinity
of the boiler.
NOTICE:
Boiler damage through contaminated combustion air or
contaminated air in the vicinity of the boiler!
▶ Never operate the boiler under dusty conditions or where the
atmosphere is contaminated with corrosive substances. These might
be, for example, paint shops, hairdressing salons and agricultural
operations involving the production of manure.
▶ Never operate boilers in locations where trichloroethene,
halogenated hydrocarbons or other corrosive chemical substances
are used or stored. Certain adhesives, solvents, cleaning agents and
paints, for example, contain these substances.
▶ Choose or prepare a suitable installation location.
3.6

Quality of the heating water

As pure water cannot be used for heat transfer, water quality is
important. Poor water quality can damage heating systems due to scale
formation and corrosion.
Water quality is an essential factor for increased efficiency, functional
reliability, long service life and for maintaining the constant operational
condition of a heating system.
▶ Observe the water quality requirements contained in the
"Water Quality Operator's Log".
▶ Warranty claims for the boilers will only be considered provided the
water quality requirements have been met and the operator's log has
been maintained.
3.7

Pipework quality

NOTICE:
Boiler damage through corrosion.
▶ Never operate this boiler as a gravity-fed or as open vented heating
system unless working in combination with a hydraulic system
separator with a heat exchanger.
When using plastic pipes in the heating system, for example in
underfloor heating systems, ensure these are impermeable to oxygen in
accordance with DIN 4726/4729. If the plastic pipes do not comply with
these standards, they must be separated from the rest of the system
using a heat exchanger.
3.8

Combustion air quality

▶ To avoid corrosion, keep the supply of combustion air free of
corrosive substances (e.g. halogenated hydrocarbons that contain
chlorine or fluorine compounds).
▶ Keep the combustion air supply free of dust or use the "air filter"
accessory set.
12
3.9

Combustion air/flue gas connection/air vents

The installation location must be connected to the open air via the
required combustion air vents or air vents.
Installation locations must not be mechanically ventilated.
WARNING:
Danger to life due to poisoning!
Risk of poisoning due to escaping flue gases when the air supply is
inadequate.
▶ Make sure that a supply of air is available in every operating mode
through corresponding openings to the open air.
▶ Inform the user about the need for the openings.
The following applies for open flue operation:
▶ Provide a combustion air vent that complies with the minimum size
1)
specified in tab. 4 .
Boiler size [kW] min. size of combustion air vent [cm
75
100
150
200
250
300
Table 4 Combustion air vents
▶ Never place objects in front of these vents.
▶ Ensure that combustion air vents are unobstructed at all times.
The following applies for balanced flue operation:
In order to provide ventilation, the installation location must have an air
vent leading to the open air of at least 150 cm
2
x 75 cm , or pipes to the open air with equivalent flow cross-sections.
At rated outputs above 100 kW, a top and bottom vent of 150 cm
respectively is required. The vents must be enlarged by 1 cm
kW over 100 kW.
▶ Never place objects in front of these vents.
▶ The air vents must always be unobstructed.
▶ Calculate dimensions of the air supply pipe in accordance with the
applicable regulations.
The boiler must be connected to a flue system.
▶ Observe country-specific and local regulations.
▶ Observe attached documentation "Information on flue gas routing".
For additional information on the combustion air/flue gas connection
see Chapter 5.6, page 17.
3.10

Frost protection

▶ Observe technical documentation of the installed control unit for
frost protection settings.
1) In addition to this, country-specific and local regulations must be observed.
Condens 7000 F – 6720871560 (2019/11)
2
]
200
250
350
450
550
650
2
, or air vents of at least 2
1)
2
2
for each