Table of Contents
Advertisement
3
Operation
After all installation procedures have been completed, and
all water piping to the energy source and power connections
have been double checked, the unit is ready for operation.
The following Startup Procedure focuses on the storage tank.
Check the Installation and Operation Manual of the hot water
source for additional startup and shutdown procedures.
Tank Pre-Start Flush
It is recommended that the tank be
NOTICE
flushed before startup in order to clear
the vessel of loose particles and material
from the installation process. To flush
the tank, see "Flushing the storage tank"
instructions in the Maintenance section
of this manual.
Start-up procedure
1.
Assure that all manual shutoff valves are closed.
2.
Slowly open the manual shutoff valve on the cold water
supply line and the valves in the hot water source
recirculation piping. Check to assure that there are not
leaks at the valve or any joints. Allow the tank to fill with
water. As the tank is filling, hold the relief valve
open to allow air to bleed out of the tank. Hot water
faucets at the highest location in the building should also
be opened. This will speed the filling process. Make sure
the tank is full of water and free of air.
3.
Open the manual shutoff valves.
4.
Turn on the recirculation pump between the water heater
and the tank.
After the power to the pump is turned on verify that the
pump is working. If the pump is an oil lubricated unit,
verify proper oiling.
Heated water presents situations that
WARNING
can be very dangerous because of the
high temperatures and pressures. Use
common sense and follow all accepted
and recommended procedures when
performing
and maintenance procedures to avoid
possible injury or death.
8
installation,
operation,
Storage Tank Installation and Operation Manual
5.
Follow the Startup procedure for the water heater to
initiate a call for heat. Adjust the operating temperature
control to the desired operating temperature and set the
safety high limit.
6.
As the unit is heating the water, carefully re-inspect water
recirculation piping and the tank hot water outlet for
signs of leakage.
7.
After the unit has reached operating temperature,
re-inspect all joints for signs of leakage. In addition,
check all gauges and controls to verify that the water
temperature and pressure are within design specifications.
8.
The unit is now ready for normal operation.
Shutdown procedure
1.
Turn off all power to the circulating pump and the hot
water source controls.
2.
Close all valves in the system in the following order:
• the hot water outlet line;
• the recirculation water piping
3.
Relieve the pressure where possible.
4.
After the system has cooled, drain the unit by opening
the tank drain valve and holding the relief valve
in the open position. This will prevent the formation of
a vacuum and increase the drainage flow.
5.
Proceed with the required maintenance or repairs.
6.
After performing the required maintenance or repairs,
return the unit to operation by following the Startup
Procedure.
Advertisement
Table of Contents
