Maintenance – Lochinvar Armor 150 - 500 User Manual

Page 18

Maintenance

Service Manual

Flue vent system and air piping

Visually inspect the entire flue gas venting system and air
piping for blockage, deterioration or leakage. Repair any
joints that show signs of leakage. Verify that air inlet pipe is
connected and properly sealed.

Verify that water heater vent discharge and air intake are
clean and free of obstructions.

Failure to inspect for the above conditions
and have them repaired can result in severe
personal injury or death.

Check water system

Verify all system components are correctly installed and
operational.

Check the cold fill pressure for the system. Verify it is
correct (must be a minimum of 12 PSI).

Watch the system pressure as the water heater heats up
(during testing) to ensure pressure does not rise too high.
Excessive pressure rise indicates expansion tank sizing or
performance problem.

Inspect automatic air vents and air separators. Remove air
vent caps and briefly push valve to flush vent. Replace caps.
Make sure vents do not leak. Replace any leaking vents.

Check expansion tank

Expansion tanks provide space for water to move in and out
as the heating system water expands due to temperature
increase or contracts as the water cools. Tanks may be open,
closed or diaphragm or bladder type. See Section 6 - System
Piping of the Armor Water Heater Installation and
Operation Manual for suggested best location of expansion
tanks and air eliminators.

Check water heater relief valve

Inspect the relief valve and lift the lever to verify flow.
Before operating any relief valve, ensure that it is piped with
its discharge in a safe area to avoid severe scald potential.
Read Section 6 - System Piping of the Armor Water Heater
Installation and Operation Manual before proceeding
further.

Safety relief valves should be re-inspected AT
LEAST ONCE EVERY THREE YEARS, by a
licensed plumbing contractor or authorized
inspection agency, to ensure that the product
has not been affected by corrosive water
conditions and to ensure that the valve and
discharge line have not been altered or
tampered with illegally. Certain naturally
occurring conditions may corrode the valve
or its components over time, rendering the
valve inoperative. Such conditions are not
detectable unless the valve and its
components are physically removed and
inspected. This inspection must only be
conducted by a plumbing contractor or
authorized inspection agency – not by the
owner. Failure to re-inspect the water heater
relief valve as directed could result in unsafe
pressure buildup, which can result in severe
personal injury, death, or substantial
property damage.

Following installation, the valve lever must
be operated AT LEAST ONCE A YEAR to
ensure that waterways are clear. Certain
naturally occurring mineral deposits may
adhere to the valve, rendering it inoperative.
When manually operating the lever, water
will discharge and precautions must be taken
to avoid contact with hot water and to avoid
water damage. Before operating lever, check
to see that a discharge line is connected to
this valve directing the flow of hot water
from the valve to a proper place of disposal.
Otherwise severe personal injury may result.
If no water flows, valve is inoperative. Shut
down the water heater until a new relief valve
has been installed.

2. After following the above warning directions, if the relief

valve weeps or will not seat properly, replace the relief valve.
Ensure that the reason for relief valve weeping is the valve
and not over-pressurization of the system due to expansion
tank waterlogging or undersizing.

ƽ WARNING