18
Installation & Operation Manual
5
Startup and maintenance
1. Make sure the system is free of leaks and that air is
purged from the system.
CAUTION
Fix any leaks found before proceeding
further. Leakage from the heat source and
solar piping can result in severe damage to
the system.
2. Many soldering fluxes contain Zinc Chloride which
can cause severe corrosion damage to stainless steel. After
completing all domestic water connections, flush the
Thermal-Stor tank thoroughly before leaving the installation.
This is particularly important if the Thermal-Stor will be
unused for an extended period of time after installation.
Flush the storage tank by drawing at least three times its
volume from the tank.
3. Make sure that each zone valve or circulator operates
when, and only when, its thermostat calls for heat. Let each
zone operate long enough to purge any remaining air from
the
system.
Refer to the heat source and solar Installation and Operation
Manuals for additional start-up information.
System startup
•
Ensure that the boiler and solar water piping are free of
leaks.
•
If there is an oil lubricated circulator in the system, make
sure it is lubricated as called for by the circulator
manufacturer.
•
Make sure that the heat source is maintained in accordance
with the manufacturer’s instructions.
• If antifreeze is required to keep the water chemistry
within the parameters shown in Table 2A (see Section
2 - Pre-Installation), make sure that this system is properly
maintained.
Annual service by a qualified service technician
should include the following:
Any procedure required by local codes.
Verify system pressure. Air venting procedure may require
adding water to bring boiler system up to pressure, typically
12 psig minimum.
Manually operate relief valve at least once a year. This will
release some hot water.
WARNING
Before operating a relief valve, make sure no
one is in front of or around the relief valve
discharge piping. Hot discharge water can
cause severe personal injury or substantial
property damage.
DANGER
Plugging the relief valve or discharge piping
can cause excessive pressure in the water
heater, resulting in severe personal injury,
death, or substantial property damage.
Move operating lever to open position for a few seconds
and then move it back, allowing it to snap closed. After the
relief valve is operated, if it continues to release water, close
the cold water inlet to the water heater immediately. Follow
the draining instructions, and replace the relief valve. If
the relief valve weeps periodically, it may be due to thermal
expansion. Do not plug the relief valve or discharge piping.
In this case, ensure that the expansion tank is properly sized
and charged to the appropriate pressure.
Maintenance Schedule
The Lochinvar Thermal-Stor solar tank is an extremely simple
device and as such requires very little maintenance. There are,
however, several items which should be inspected on an annual
or as needed basis to ensure a reliable supply of hot water:
Verify that expansion tank pressure is equal to system
pressure.
