Aqua Pro Product Manual

Pre-installation (continued)
Hot Water Can Scald!
• Water heated to temperature for clothes washing,
dish washing and other sanitizing needs can scald
and cause permanent injury.
• Children, elderly, and infirm or physically handi-
capped persons are more likely to be permanently
injured by hot water. Never leave them unattended
in bathtub or shower. Never allow small children to
use a hot water tap or draw their own bath.
• If anyone using hot water in the building fits
the above description, or if state laws or local
codes require certain water temperatures at
hot water taps, you must take special precau-
tions:
• Use lowest possible temperature setting.
• Install some type of tempering device, such
as an automatic mixing valve, at hot water
tap or water heater. Automatic mixing valve
must be selected and installed according
to valve manufacturer’s recommendations
and instructions.
• Water passing out of drain valves may be extremely
hot. To avoid injury:
• Make sure all connections are tight.
• Direct water flow away from any person.
Protection must be taken against excessive tem-
perature and pressure! — Installation of a tem-
perature & pressure (T&P) relief valve (provided
with water heater) and a thermostatic mixing valve
(provided by installer) is required.
Part number 633-500-230/0918
5
AQUA PRO
TM
INDIRECT-FIRED WATER HEATERS — Product Manual
Domestic water piping requirements
1. Install unions on all piping for easy removal of water heater.
2. Use dielectric unions or couplings to protect hot and cold water
fittings from corrosion when connecting dissimilar materials such
as copper and galvanized iron pipe.
3.
When the supply pressure is higher than 70 PSIG, install a pres-
sure reducing valve on cold water supply line to prevent water loss
through T&P relief valve. A thermal expansion tank is also required.
4. If the water heater will replace a tankless coil in the boiler, discon-
nect piping to coil or remove coil from boiler and replace with
a cover plate. Allow water to drain from coil.
Do not plug the
tankless coil.
Plugging tankless coil inlet and outlet will result in severe
personal injury, death or substantial property damage.
Studies have indicated that dangerous bacteria,
including
legionella pneumophila, can form in
the potable water distribution system if certain
minimum water temperatures are not maintained.
Contact your local health department for more
information.
Boiler water restrictions
1. Read the WARNINGS under “Boiler water restrictions,” page 3.