WHL-001 Rev. 001 Rel. 008 Date 8.23.18
6
Households with small children, disabled, or elderly persons may
require a 120
o
F or lower temperature setting to prevent severe
personal injury or death due to scalding.
G. Water Temperature Adjustment
If the water heater is going to have a set temperature above 120
o
F, you
must use an ASSE 1017 rated mixing valve to avoid severe burns or
death from scalding temperatures.
F. High Elevation Installations
Natural gas at high elevation might contain less heating value than
typical 1,000 BTU/cu ft and therefore can cause improper air / gas
mix leading to improper combustion. For natural gas installations
above 3,000 ft, call your gas provider to determine the heating value
of the supplied natural gas.
Approximate Time / Temperature Relationships in Scalds
120
o
F
More than 5 minutes
125
o
F
1 1/2 to 2 minutes
130
o
F
About 30 seconds
135
o
F
About 10 seconds
140
o
F
Less than 5 seconds
145
o
F
Less than 3 seconds
150
o
F
About 1 1/2 seconds
155
o
F
About 1 second
Table 1 - Approximate Time / Temperature Relationships in Scalds
Part 2 - Before You Start
Components included with the water heater:
• Intake PVC Tee with Screens
• Exhaust PVC Coupling with Screens
• Temperature and Pressure Relief Valve (Ships Installed)
• Installation Manual and Warranty
• User’s Information Manual
A. What’s in the Box
Remove all sides of the shipping crate of the water heater.
B. How the Heater Operates
Modulating Condensing Technology
is an intelligent system that
delivers highly efficient water heating, maximizing efficiency by
measuring the data parameters of your water heating system. Some
of its features are:
Stainless Steel Water Storage Tank
The stainless steel water storage tank has a combustion chamber
submerged into the tank water. When the water heater is fired,
combustion gases heat the combustion chamber walls, transferring
heat directly into the surrounding water. These hot gases are blown
into secondary heat exchanger coils, where more heat from these
gases is transferred into the water.
Modulating Combustion System
The control monitors the water heating system and temperatures,
regulating burner output during operation to match system demand.
This increase in efficiency allows for substantial fuel savings.
Gas Valve
The gas valve senses suction from the blower, allowing gas to flow only
if the gas valve is energized and combustion air is flowing.
Tank Sensor
This sensor monitors system water temperature. The control module
adjusts burner firing rate so the outlet water temperature meets the
set point.
Control
The integrated control system monitors water temperature and
adjusts fan speed to regulate the heater’s energy output. This allows
the unit to deliver the required amount of heated energy and
nothing more.
Burner
Constructed of high grade stainless steel, the burner uses pre-mixed
air and gas and provides a wide range of firing rates.
Condensate Removal System
This is a condensing high efficiency water heater with a condensate
removal system. Condensate is nothing more than water vapor
derived from combustion products, similar to that of an automobile
when it is initially started. It is very important that the condensate
line slopes away from the water heater and down to a suitable inside
drain.
If the condensate outlet on the heater is lower than the drain,
us a condensate removal pump (Part # 554200, available from
Westinghouse). In addition, local authorities may require a
condensate neutralizer to neutralize the condensate. Condensate
neutralizers are made up of lime crystals, marble, or phosphate
chips. Neutralizers can be installed in the field by the installer and
purchased from Westinghouse (p/n 7450P-212).
It is also very important not to expose the condensate line to freezing
temperatures or any type of blockage. Plastic tubing must be the only
material used for the condensate line. Steel, brass, copper, or other
materials will be subject to corrosion or deterioration. A second vent
may be necessary to prevent condensate line vacuum lock on a long
horizontal run. Also, an increase in pipe size may be necessary to
allow condensate to drain properly. Support of the condensate line
may be necessary to avoid blockage of the condensate flow.
Spark Ignition
The burner flame is ignited by applying high voltage to the system
spark electrode. This causes a spark from electrode to ground.
C. Optional Equipment
Optional equipment available from Westinghouse (and Part #):
• 3” Stainless Steel Outside Vent Termination Kit (V1000)
• 2” PVC Concentric Vent Kit (KGAVT0501CVT)
• 3” PVC Concentric Vent Kit (KGAVT0601CVT)
• 3” Polypro Vent Kit (8400P-001)
• 3” Polypro Pipe
(33’ length # 8400P-002, 49.5’ length # 8400P-003)
• Outdoor Sensor (7250P-319)
• Condensate Neutralizer (7450P-212)
Part 3 - Prepare the Water Heater
Remove all sides of the shipping crate to allow the heater to be
moved into its installation location.
COLD WEATHER HANDLING
- If the water heater has been stored
in a very cold location (BELOW 0
o
F) before installation, handle with
care until the components come to room temperature. Failure to
do so could result in damage to the water heater.
Carefully consider installation when determining heater location.
Please read the entire manual before attempting installation.
Failure to properly take factors such as heater venting, piping,
condensate removal, and wiring into account before installation
could result in wasted time, money, and possible property damage
and personal injury.
