lp-441 Rev. 004 Rel. 000 Date 7.2.21
8
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
• Solar Supplement (S Models Only)
A. What’s in the Box
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 HTP). 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 HTP (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 HTP (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
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.
This water heater is certified for indoor use only. DO NOT INSTALL
OUTDOORS. Outdoor installations ARE NOT covered by warranty.
Failure to install the water heater indoors could result in property
damage, severe personal injury, or death.
A. Locating the Water Heater
1. Installation Area (Mechanical Room) Operating Conditions
• Ensure ambient temperatures are higher than 32
o
F / 0
o
C
and lower than 104
o
F / 40
o
C
• Prevent the air from becoming contaminated by the
products, places, and conditions listed in this manual
• Avoid continuously high levels of humidity
• Never close existing ventilation openings
• Ensure a minimum 1” clearance around hot water and
exhaust vent pipes
Incorrect ambient conditions can lead to damage to the heating
system and put safe operation at risk. Ensure that the installation
location adheres to the information included in this manual.
Failure to do so could result in property damage, serious personal
injury, or death. Failure of heater or components due to incorrect
operating conditions IS NOT covered by product warranty.
This water heater has a condensate disposal system that may freeze
if exposed to sustained temperatures below 32
o
F. Precautions
should be taken to protect the condensate trap and drain lines
from sustained freezing conditions. Failure to take precautions
could result in property damage, severe personal injury, or death.
This water heater must be installed upright in the vertical position
as described in this manual. DO NOT attempt to install this water
heater in any other orientation. Doing so will result in improper
water heater operation and property damage, and could result in
serious personal injury or death.
UNCRATING THE WATER HEATER
- Any claims for damage or
shortage in shipment must be filed immediately against the
transportation company by the consignee.
Remove the water heater from the packaging. Take care to place the
water heater and accessories in a safe location prior to installation to
prevent damage to the mechanical connections.
