lp-451 Rev. 001 Rel. 001 Date 7.25.17
4
Locate the water heater where any leakage from the relief valve,
related piping, tank, or connections will not result in damage to
surrounding areas or lower floors of the building. The water heater
should be located near a floor drain or installed in a drain pan.
Leakage damages ARE NOT covered by warranty.
NOTE:
To save on heating costs and improve energy efficiency keep
the distance between the boiler and water heater to a minimum
to reduce heat loss from excess piping and keep friction loss at a
minimum. Ensure all piping between the boiler and water heater is
properly insulated to minimize heat loss.
The water heater may be located some distance from the boiler
provided the circulator meets flow requirements through the coil. The
greater the distance from the water heater to the boiler the longer the
response will be to a call for hot water.
This water heater must be installed vertical on a level surface.
NOTE:
In the State of California, the water heater must be braced,
anchored, or strapped to avoid moving during an earthquake. Contact
local utilities for code requirements in your area. Visit http://www.dsa.
dgs.ca.gov or call 1-916-445-8100 and request instructions.
However, applicable local codes shall govern installation. For residential
water heaters of a capacity of greater than 52 gallons, consult the local
building jurisdiction for acceptable bracing procedures.
NOTE:
If you do not provide the minimum clearances shown in
Figure 1, it might not be possible to service the water heater without
removing it from the space.
NOTE:
A combustible door or removable panel is acceptable front
clearance.
Ensure the location can support the entire filled weight of the water
heater. Failure to properly support the water heater could result in
property damage, severe personal injury, or death.
This water heater must not be located near flammable liquids such
as gasoline, butane, liquefied propane, adhesives, solvents, paint
thinners, etc., as the controls of this water heater could ignite these
vapors and cause an explosion resulting in property damage, severe
personal injury, or death.
Figure 1 - Recommended Service Clearances
24" MIN.
ZERO
ZERO CLEARANCE
ZERO
LP-451-G
03/29/17
TO OPEN DRAIN
LINE SHOULD BE AT
LEAST 3/4" ID AND
PITCHED FOR PROPER
DRAINAGE.
PLUS 2" MINIMUM
DIA. OF WATER HEATER
MAXIMUM 2"
RECOMMENDED SERVICE CLEARANCES
CATCH PAN DIMENSIONS
B. Water Chemistry Requirements
Chemical imbalance of the water supply may affect efficiency and
cause severe damage to the appliance and associated equipment.
Water quality must be professionally analyzed to determine whether
it is necessary to treat the water. Various solutions are available to
adjust water quality. Adverse water quality will affect the reliability
of the system. In addition, operating temperatures above 135
o
F will
accelerate the build-up of lime scale and possibly shorten appliance
service life. Failure of an appliance due to lime scale build-up, low
pH, or other chemical imbalance IS NOT covered by the warranty.
The water must be potable, free of corrosive chemicals, sand,
dirt, and other contaminates. It is up to the installer to ensure the
water does not contain corrosive chemicals or elements that can
damage the heat exchanger. Potable water is defined as drinkable
water supplied from utility or well water in compliance with EPA
secondary maximum contaminant levels (40 CFR Part 143.3). If
the water contains contaminants higher than outlined by the EPA,
water treatment is recommended and additional, more frequent
maintenance may be required.
If you suspect that your water is contaminated in any way,
discontinue use of the appliance and contact an authorized
technician or licensed professional.
• Water pH between 6.5 and 8.5
• pH levels below 6.5 can cause an increase in the rate of
corrosion. pH of 8.5 or higher can potentially cause lime
scale build-up
• Maintain water pH between 6.5 and 8.5. Check with litmus
paper or have it chemically analyzed by a local water
treatment company.
• If the pH is not between 6.5 and 8.5, consult a local water
treatment company for solutions.
• Hardness less than 12 grains (200 mg/L) (Residential Use
- water temperatures below 140
o
F)
• Hardness less than 7 grains (120 mg/L) (Commercial Use
- water temperatures of 140
o
F and greater)
• Hardness levels above the required amounts can lead to
lime scale build-up throughout the system. Water below 5
grains/gallon (85 mg/L) may be over softened.
• Consult local water treatment companies for unusually
hard water areas (above the required amounts) or for
other treatment solutions if water is being over softened
(below 5 grains/gallon [85 mg/L]).
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.
Choose a location for the water heater as centralized to the piping
system as possible. Also, locate the water heater and domestic water
piping where it will not be exposed to freezing temperatures. All
piping should be insulated. Additionally, place the water heater so that
the drain, controls, and inlets/outlets are easily accessible.