Filter
Top Products
6 720 606 518
4
Appliance details
2.2 Unpacking the GWH 1600 PS
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 sticker which is
located on the right side panel of the cover.
Fig. 2 Rating plate sticker
A Serial number
B Type of gas
The box includes:
• Pressure relief valve
•Mounting screws
• Product registration card
• Installation manual (additional copies can be
downloaded at www.boschwaterheating.com)
• Incandescent particle tray.
Please complete and return the enclosed product
registration card.
The GWH 1600 PS is not approved or designed
for:
• Manufactured (mobile) homes, RV's, boats or any
mobile installation
• Heating or other recirculating/pumping applications*
• Installation in a bathroom, bedroom or any other
habitable room 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 3.10.
2.3 General rules to follow for safe
operation
• 1. You must 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.
In Canada: The Installation must conform with CGA
B149.(1,2) INSTALLATION CODES and /or local
installation codes.
• 2. You must vent your heater. See section on
VENTING.
• 3. Carefully plan where you install the heater. Correct
combustion air supply and vent pipe installation are
very important. If not installed correctly, fatal
accidents can be caused by lack of air, carbon
monoxide poisoning or fire.
• 4. The appliance and its gas connection must be leak
tested before placing the appliance in operation. 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).
• 5. Keep water heater area clear and free from
combustibles and flammable liquids. Do not locate
the heater over any material which might burn.
• 6. 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 3.7 and 3.8 to verify proper gas line
sizing.
• 7. 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 heater.
• 8. 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.
• 9. Failure to install heater correctly may lead to
unsafe operation and void the warranty.
• 10. The heater must not be installed in an unheated
area where temperatures will reach 36°F or lower. If
the heater is left in an area susceptible to such
temperatures, refer to section 4.5 on Winterizing.
• 11. In areas where water supply has a high mineral
content, a water softener is strongly recommended.
Damage to the water heater resulting from hard
water/scale deposits will not be covered under
warranty.