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5
Startup and maintenance
1. Turn OFF main electrical power to the tank, solar collectors
and any other heat source connected to the tank.
2. Turn OFF the main manual gas shutoff for any heat source
connected to the tank.
3. Turn OFF electrical power to the circulating pump (if used).
4. Close off the boiler or heat source inlet connection.
5. Ensure that the drain (located on the bottom of the tank)
is routed to a floor drain with adequate capacity to allow
the tank to be flushed.
To drain/flush the system
CAUTION
Hot water will be released under pressure.
Avoid contact with hot discharge water to
prevent the risk of severe scald injury.
6. Open the drain valve and allow the incoming cold water
“Boiler Return” to flush the soft sediment out of the bottom
of the storage tank.
Owner monthly maintenance to include:
Visually check valves, pipes, and fittings for leaks. Call a
qualified service technician to repair leaks.
Follow instructions on circulator to oil, if required.
Check mixing valve, valves, pipes, and fittings for leaks.
Check function of the field-installed controls and valves.
See component manufacturer’s instructions.
Review owner’s maintenance responsibilities and their
frequencies, including any not listed in the following
section.
If antifreeze is used in the heat source water, check the
concentration. Heat source water (including additives) must be
non-toxic, having a toxicity rating or class of 1, as listed in the
“Clinical Toxicology of Commercial Products”. A maximum
50/50 mixture of inhibited propylene glycol is recommended.
Follow the antifreeze manufacturer’s instructions.
WARNING
Do not use automotive, ethylene glycol or
petroleum-based antifreeze. Do not use
any undiluted antifreeze. This can cause
severe personal injury, death, or substantial
property damage.
Winterizing the system
Drain the tank and spherical heat exchanger if the appliance will
be off and exposed to freezing temperatures. Freezing water will
expand and damage the appliance.
•
If the tank, spherical heat exchanger and heat source
water contain sufficient antifreeze, then the tank does
not need to be drained.
7. Observe the color of the water initially discharged from
the tank drain. This water will generally be milky or
slightly discolored by the sediment discharge. Allow the
drain to run until the water runs clear.
8. Close the drain valve on the tank.
9. Open the hot water relief/air valve on the top of the
tank.
10. Turn ON main electrical power for the heat source, solar
collectors, tank and circulating pump.
11. Turn ON gas supply to the heat source(s).
12. Observe heat source and solar piping to ensure that all
components are functioning properly.
Installation & Operation Manual
