Bosch 940 ES Installation Manual page 26

Installation instructions
3.8 Mounting installation for
manufactured (mobile) homes
When installing this appliance in a mobile home the unit
must be additionally secured at the bottom of the water
heater as shown in Fig. 32. Use the included screws to
secure the brackets at the bottom of the water heater to
the wall. If the wall is sheathed with plaster or drywall, it
is recommended that a support board be first attached
across a pair of studs at the bottom of the unit as shown
in Fig. 29.
Fig. 32 Mounting the heater in manufactured (mobile)
homes
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3.9 Gas piping & connections
Before connecting the gas supply, check the rating
plate on the right side of the heater to be sure that the
heater is rated for the same gas to which it will be
connected.
In the United States: The installation must conform with
local codes or, in the absence of local codes, the
National Fuel Gas Code ANSI Z223.1/NFPA 54.
In Canada: The Installation must conform to CSA B149
INSTALLATION CODES and/or local installation
codes.
Warning: DO NOT connect to an
unregulated or high pressure propane
line or to a high pressure commercial
natural gas line.
Warning: The heater must be isolated
from the gas supply piping system
during any pressure testing of that
system at test pressures equal to or
more than 0.5 psig. If overpressure has
occurred, such as through improper
testing of the gas lines or malfunction of
the supply system, the gas valve must
be checked for safe operation.
GAS CONNECTIONS
B Install a manual gas shut off valve on the gas supply
line within easy reach of the appliance.
B Install a union when connecting gas supply.
B The minimum internal diameter required for
any appliance connector is ¾", see Fig. 35 for
more details on pipe sizing.
B Undersized flexible appliance connector not permit-
ted.
B National Fuel Gas Code requires that a sediment
trap (drip leg) be installed on gas appliances not so
equipped. The drip leg must be accessible and not
subject to freezing conditions. Install in accordance
with the recommendations of the serving gas
supplier, see Fig. 33.
Minimum
3"
Fig. 33 Gas connection (drip leg)
Gas supply
Cap
6 720 644 930