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7.0
COMMISSIONING AND TESTING
7.1
ELECTRICAL INSTALLATION
Any ancillary item that requires an electrical supply should be installed and commissioned as per
instructions.
7.2
WATER CONNECTION
For design see Section 5: Water connections
The system should be thoroughly flushed out with cold water without any
circulating pumps in position. Ensure all the valves are open.
If a building return pump is to be fitted, it should be fitted before the system is filled and air locks
cleared. Check the system for leaks and repair as necessary. If the system is configured in an unvented
arrangement, check the expansion vessel cushion pressure.
7.3
PRIMARY HEAT SOURCE
The primary heat source operating in conjunction with the storage vessel should be installed and
commissioned in accordance with the relevant ICM Instructions provided.
8.0
MAINTENANCE
8.1
GENERAL
Regular servicing is recommended, preferably by a Lochinvar appointed person, to ensure trouble free
operation. Even if a maintenance schedule is determined to be less than annually, it is important that
all controls and safety features are checked for correct operation on an annual basis.
8.2
MAINTENANCE SCHEDULE
It is good practice to service the SST every 12 months. Lochinvar Limited recommend that this is the
maximum service interval, however in hard water areas, it may be necessary to reduce this time period
to ensure correct operation of the storage vessel and associated equipment.
8.3
DRAINING THE WATER SYSTEM
Maintenance and service procedures for the SST require draining the water heater. The water heater
must also be drained if it is to be shut down and exposed to freezing temperatures.
1.
Turn off the water heater if applicable.
2.
Connect a hose to the system drain valve.
3.
Locate hose’s discharge in an area where hot water will not cause any damage or injury.
4.
Close the cold-water inlet valve to water heater system.
5.
Open a nearby hot water outlet to vent the system.
6.
Open the drain valve.
7.
If the vessel is being drained for an extended shutdown, it is suggested the drain valve be left
open during this period.
