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must be found and corrected to insure proper
operation.
START-UP PROCEDURE
1. Ensure that the electrical power to the
water heater is in the "OFF" position. If
the power disconnect point is out of sight,
lock it in the open ("OFF") position and
tag to prevent unexpected application of
power.
2. Close the water heater drain valve(s).
3. Open a nearby hot water faucet to allow
the air in the system to escape as the tank
fills.
4. Fully open the cold water inlet valve to the
water heater to begin filling the heater and
piping.
The cold water supply must be left in
NOTE:
the open position when the water heater is in
use.
5. Check the nearby hot water faucet to
verify that air is exiting the tank as it fills
with water. Allow water to run until a
constant flow is obtained at the faucet.
This will insure that all air is purged from
the system.
6. While the tank is filling, open the
electrical control panel and set the
thermostat(s)
temperature. There are four thermostats to
control the operation of four heater groups
of 36KW. All individual thermostats may
be adjusted to the same temperature set
point. In order to turn on the heater groups
in sequence with a time delay between
them the first three thermostats are
connected to time relays set at 5 seconds
time delay. For details refer to control
circuit drawing.
7. Insure that pilot switches of heater groups
are placed in the "ON" position.
8. When a constant flow is obtained at the
to
the
desired
water
faucet, it may be turned off. The
temperature and pressure relief valve
should be manually opened to insure that
there is no captive air in the storage tank.
A constant stream of water must flow from
the manually opened relief valve. Release
the handle on the relief valve and allow it
to close after water flow is observed.
9. Carefully check the tank, pipe and fittings
for any sign of a water leak. Immediately
repair as needed. Open the access door to
the immersion heating elements and check
for leaks at the element mounting flanges.
If any leak is detected, tighten the screw–
in element.
10. Ensure that the electrical access panel
(field wiring compartment) is closed and
the heating element access panel is in
place before proceeding.
11. After assuring that the tank is completely
filled with water and no leaks are detected,
you are now ready to start operation of the
water heater.
12. Turn on the electric power at the main
disconnect point. The contactors should be
energized as the elements start to heat the
water in the tank.
13. As the water heater starts heating, check
the contactors for "buzzing" or chattering"
during operation. If noise is detected, turn
off main power, open the control panel and
clean the contact points of the magnetic
contactor(s). Remove any dust, dirt or
foreign matter that may have found its way
into the contactor or other electrical
components in the control panel during
shipping, installation or service.
14. Close the electrical control panel and turn
on main power.
15. The water heater is now ready for normal
operation.
Page: 6 / 8
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