Zbr; Expansion Vessel; Selecting The Installation Location; Pre-Installing Pipes - Bosch ZBR16-3A Series Installation And Service Instructions Manual

34 | Installation
6.3 ZBR..-3A appliances (heating boilers): Selecting an

expansion vessel

External expansion vessel
▶ Determine size of the expansion vessel.
Fig. 15 Sample installation - expansion vessel
6.4

Selecting the installation location

Installation location requirements
Observe the current national and local codes and regulations.
▶ Observe country-specific requirements.
▶ Observe installation instructions of the venting system accessories
and their clearances.
Combustion air
To avoid corrosion, keep the supply of combustion air free of corrosive
substances; contained in solvents, paints, adhesives, propellants and
domestic cleaning agents.
Industrial sources
Chemical cleaning Trichloroethylene, tetrachloroethylene,
fluorinated hydrocarbons
Degreasing bath Perchloroethylene, trichloroethylene,
methylchloroform
Printing shops Trichloroethylene
Hair salons Aerosol propellants, hydrocarbons containing
fluorine and chlorine
(difluorodichloromethane)
Household sources
Cleaning and Perchloroethylene, methylchloroform,
degreasing agents trichloroethylene, methylene chloride, carbon
tetrachloride, hydrochloric acid
Workshop
Solvents and thinners Various chlorinated hydrocarbons
Aerosols Chlorofluorinated hydrocarbons
(difluorodichloromethane)
Table 16 Corrosive materials
6 720 806 992 (2015/03)
Surface temperature
The max. surface temperature of this appliance is below 185 °F (85 °C).
According to ANSI/Z223.1/NFPA43 (National fuel gas code) and CAN/
CGA B 149.1 (Natural Gas and Propane installation code), the appliance
is approved for zero clearance to combustibles. For servicing a
clearance of 4" (102 mm) is recommended.
6.5
▶ Secure the installation template (supplied with the technical
documentation) to the wall; observe the minimum side clearances of
4 inches (102 mm) ( page 9).
▶ Drill holes for the appliance and for the hydraulics connection plate in
accordance with the mounting template.
6 720 641 933-20.3O
Fig. 16 Mounting template
▶ Remove the mounting template.

Pre-installing pipes

( 17 11/ 18 in. ) ( 17 11/ 18 in. )
NOTICE: For walls with insufficient load capacity, the
appliance and the hydraulics connection plate must be
mounted on a sheet of plywood or similar
reinforcement.
Greenstar