State 520 - Manual (Page 5)

Installation
5 │
Page

Installation and service must be performed by a qualified installer (for
example, a licensed plumber or gas fitter), otherwise the warranty will be
void.

The installer (licensed professional) is responsible for the correct installation
of the water heater and for compliance with all national, state/provincial,
and local codes.

The warranty will not cover damage caused by water quality.
 Only potable water or potable water / glycol mixtures can be used with this
water heater. Do not introduce pool or spa water, or any chemically
treated water into the water heater.
 Water hardness levels must not exceed 7 grains per gallon (120 ppm) for
single family domestic applications or more than 4 grains per gallon (70
ppm) for all other types of applications. Water hardness leads to scale
formation and may affect/damage the water heater. Hard water scaling
must be avoided or controlled by proper water treatment.
 Water pH levels must be between 6.5 and 8.5
 Well water must be treated.

Although this water heater is designed to operate with minimal sound, the
manufacturer does not recommend installing the unit on a wall adjacent to a
bedroom, or a room that is intended for quiet study or meditation, etc.

Locate your heater close to a drain where water leakage will not do damage to
surrounding areas. As with any water heating appliance, the potential for
leakage at some time in the life of the product does exist. The manufacturer
will not be responsible for any water damage that may occur. If you install a
drain pan under the unit, ensure that it will not restrict the combustion air flow.

The water heater is high efficiency products that create condensation. A
condensation drain tube must be installed with these models to discharge
condensate into a drain outlet. For more information, refer to p. 20.

The manufacturer does not recommend installing the Direct Vent Indoor
models in an attic due to safety issues. If you install your Direct Vent Indoor
models in an attic:
 Make sure your unit will have enough combustion air and proper
ventilation.
 Keep the area around you’re the water heater clean. When dust collects on
the flame sensor, the water heater will shut down on errors.
 Locate unit for easy access for service and maintenance.
 A drain pan, or other means of protection against water damage, is
required to be installed under the water heater in case of leaks.
INSTALLATION
All gas water heaters require careful and correct installation to ensure safe and efficient operation. This
manual must be followed exactly. Read the “Safety Guidelines” section at the beginning of this manual.
WARNING
WARNING
CAUTION
PLEASE READ THIS MANUAL CAREFULLY AND FOLLOW ALL DIRECTIONS.