lp-770 Rev. 000 Rel. 000 Date 6.21.21
4
DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN
SUBMERGED IN WATER.
Immediately call a qualified service
technician. The water heater MUST BE replaced if it has been
submerged. Attempting to operate a water heater that has been
submerged could create numerous harmful conditions, such as a
potential gas leakage causing a fire and/or explosion, or the release of
mold, bacteria, or other harmful particulates into the air. Operating a
previously submerged water heater could result in property damage,
severe personal injury, or death.
NOTE:
Water heater damage due to flood or submersion is considered
an Act of God, and IS NOT covered under product warranty.
NOTE:
If the water heater is exposed to the following, do not operate.
Immediately call a qualified service technician.
1. Fire
2. Damage
3. Water
Failure to follow this information could result in property damage,
severe personal injury, or death.
DO NOT alter or modify the water heater or water heater controls.
Altering any HTP water heater with parts not manufactured by HTP
WILL INSTANTLY VOID the water heater warranty and could result in
property damage, personal injury, or death.
Do not use this water heater for anything other than its intended
purpose (as described in this manual). Doing so could result in
property damage and WILL VOID product warranty.
This water heater has been designed to heat potable water ONLY.
Using this water heater to heat non-potable fluid WILL VOID product
warranty, and could result in property damage, personal injury, or
death.
B. When Servicing the Water Heating System
•
To avoid electric shock, disconnect electrical supply before
performing maintenance.
•
To avoid severe burns, allow water heater and associated
equipment to cool before servicing.
•
Do not use petroleum-based cleaning or sealing compounds
in a water heating system. Gaskets and seals in the system may
be damaged. This can result in substantial property damage.
•
Do not use “homemade cures” or “patent medicines”. Damage
to the water heater, substantial property damage, and/or
serious personal injury may result.
•
Always verify proper operation after servicing the water heater.
NOTE:
When inquiring about service or troubleshooting, reference the
model and serial numbers from the water heater rating label.
C. 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. See Table 1.
If you suspect that your water is contaminated in any way,
discontinue use of the appliance and contact an authorized
technician or licensed professional.
Contaminant
Maximum Allowable Level
Total Hardness
(Residential Use - Below 140
o
F water
temperature)
200 mg/l
(12 grains/gallon)
Total Hardness
(Commercial Use - Above 150
o
F
water temperature)
120 mg/l
(7 grains/gallon)
Aluminum
0.05 to 0.2 mg/l or PPM
Chloride
100 mg/l or PPM
Copper
1 mg/l or PPM
Iron
0.3 mg/l or PPM
Manganese
0.05 mg/l or PPM
pH
6.5 - 8.5
Sulfate
205 mg/l or PPM
Total Dissolved Solids (TDS)
500 mg/l or PPM
Zinc
5 mg/l or PPM
Dissolved Carbon Dioxide (CO2)
15 mg/l or PPM
Table 1 - Water Quality Specifications
D. Freeze Protection
Consider piping and installation when determining heater
location. Damages resulting from incorrect installation or from use
of products not approved by HTP ARE NOT covered by warranty.
NEVER use any toxic chemical, including automotive, standard
glycol antifreeze, or ethylene glycol made for hydronic (non-
potable) systems. These chemicals can attack gaskets and seals
in water systems, are poisonous if consumed, and can cause
personal injury or death.
NOTE:
HTP DOES NOT WARRANT THE APPLIANCE AGAINST FREEZE-
RELATED DAMAGE.
E. Water Temperature Adjustment and Scalding
This water heater can deliver scalding water. Be careful whenever
using hot water to avoid scalding injury. Certain appliances such as
dishwashers and automatic clothes washers may require increased
water temperatures. By setting the thermostat on this heater
to obtain the increased water temperature required by these
appliances you may create the potential for scald injury.
Do not use this water heater in steam applications. Doing so will
result in damage to the water heater. Such damages are not covered
by warranty.