Please note the following:
•The system should be installed only with piping that is suitable for potable (drinkable) water such as copper, CPVC, or polybutylene. This water heater must not be installed using iron piping or PVC water piping.
•Use only pumps, valves, or fittings that are compatible with potable water.
•Use only full flow ball or gate valves. The use of valves that may cause excessive restriction to water flow is not recommended.
•Use only 95/5
•Piping that has been treated with chromates, boiler seal, or other chemicals must not be used.
•Chemicals that may contaminate the potable water supply must not be added to the piping system.
•This water heater is suitable for combination water (potable) heating and space heating and not suitable for space heating applications only.
Closed System/Thermal Expansion
WARNING
Explosion Hazard
If the temperature and pressure relief valve is dripping or leaking, have a qualified person replace it.
Examples of a qualified person include: licensed plumbers, authorized gas company personnel, and authorized service personnel.
Do not plug valve. Do not remove valve.
Failure to follow these instructions can result in death, or explosion.
As water is heated, it expands (thermal expansion). In a closed system, the volume of water will grow. As the volume of water grows, there will be a corresponding increase in water pressure due to thermal expansion. Thermal expansion can cause premature tank failure (leakage). This type of failure is not covered under the limited warranty. Thermal expansion can also cause intermittent
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