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Unpacking The 330 Pn Heater; General Rules To Follow For Safe Operation - Bosch 330-PN-N Installation Manual

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8 | Appliance details

Unpacking the 330 PN heater

This heater is packed securely.
Before installing the unit, be certain you have the correct
heater for your type of Gas - Propane or Natural Gas.
Identification labels are found on the shipping box, and on the
rating plate which is located on the right side panel of the cover.
Fig. 2
Rating plate
[A] Serial number
[B] Type of gas
The box includes:
Mounting screws
Product registration card
Installation manual
Incandescent particle tray
Do not lose this manual, there is a charge for a replacement.
Please complete and return the enclosed product registration
The 330 PN is not approved or designed for:
Manufactured (mobile) homes, RV's or boats
Heating or other recirculating/pumping applications*
Solar/preheat backup or high temperature booster use
Installation in a bathroom or other occupied rooms
normally kept closed.
* This includes domestic hot water circulator pump loop
systems that may be installed in home hot water system prior to
installing this unit. An approved recirculation design can be
found in chapter 4.10.

General rules to follow for safe operation

1. You should follow these instructions when you install your
heater. 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.
6 720 644 951 (2014/11)
In Canada: The Installation should conform with CGA
B149.(1,2) INSTALLATION CODES and /or local installation
2. Carefully plan where you install the heater. Proper
clearances must be followed.
3. The appliance must be isolated from the gas supply piping
system by closing its individual manual gas shutoff valve (not
supplied with heater) during any pressure testing at pressures
in excess of ½ Psig (3.5 kPa).
The appliance and its gas connection must be leak tested
before placing the appliance in operation.
4. Keep water heater area clear and free from combustibles
and flammable liquids. Do not locate the heater over any
material which might burn.
5. Correct gas pressure is critical for the optimum operation
of this heater. Gas piping must be sized to provide the required
pressure at the maximum output of the heater, while all the
other gas appliances are in operation. Check with your local gas
supplier, and see chapter 4.7 and 4.8 to verify proper gas line
6. Should overheating occur or the gas supply fail to shut off,
turn off the gas supply at the manual gas shut off valve, on the
gas line. Note: manual gas shutoff valve is not supplied with the
7. Do not use this appliance if any part has been underwater.
Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system and any
gas control which has been underwater.
BOSCH is constantly improving its products,
therefore specifications are subject to
change without prior notice.
330 PN



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