Gas Piping & Connections - Bosch Therm C 1210 ES Installation And Operating Instructions Manual

Fig. 27 Leveling wall mounting bracket
Fig. 28 Mounting the heater
WARNING:
▶ Appliance must be installed vertically.
4.8 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
C 1210ES/ESC – 6 720 644 887 (2022/04)
6720608158-64.1AL
6720608158-05. 1 AL 6720608158-05. 1 AL
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 CGA 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
▶ Install a manual gas shut off valve on the gas supply line
within easy reach of the appliance.
▶ Install a union when connecting gas supply.
▶ The minimum internal diameter required for any appliance
connector is ¾", see chapter 4.8.1 for more details on pipe
sizing.
▶ Undersized flexible appliance connector not permitted.
▶ 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. 2.
Fig. 29 Gas connection
[1] Gas supply
[2] Cap
[3] Minimum 3"
Installation instructions
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