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D. Connect the domestic hot water piping.
Install piping on to hot water supply connection using a union, a heat trap, a vacuum breaker, and a shut-off
valve.
Pipe the relief valve discharge so that the discharge from the valve will exit only within 6 inches above, or at any
distance below, the structural floor, and cannot contact any live electrical part. The discharge opening must not be
blocked or reduced in size under any circumstances.
E. Fill the storage tank tank.
Open all faucets to allow air to purge from the tank and piping. Remove screens on faucets.
Open domestic hot water shut-off valve.
Open cold water inlet shut-off valve.
Purge all of the air from the domestic water system. Allow water to run so the tank is completely purged of any debris.
Run the water long enough to change at least five tank volume changes. Close all faucets. Reinstall all of the screens in
the faucets.
Check the system for leaks. Repair as required.
IV. Electrical
1.
Install electric wiring and grounding in accordance with the National Electrical code and local regulations.
2.
All storage tanks are supplied with a thermostat.
V. Operation
Startup
After the storage tank has been plumbed and wired, and the sytem is purged of air, the storage tank is ready to be
started.
1.
The tank thermostat is factory pre-set to 125 degrees F and will call for heat if the water in the tank is lower than
125.
2.
On a call for heat, the tank thermostat contacts close to start the storage tank zone circulator and the heat source.
3.
After the tank has reached the temperature setting, the tank thermostat opens and de-energizes the circulator and
the heat source.
Temperature Adjustment
The tank aquastat controls the maximum water temperature in the storage tank. If it is set too high, the resulting hot
water can cause painful scalding with possible serious and permanent injury. The temperature at which this occurs varies
with a person’s age, and the length of time in contact with the hot water. The slower response time of infants, older, or
handicapped people increase the hazard for them.
It is recommended that the aquastat be set for the lowest possible temperature that satisfies your needs. This will also
provide you with the lowest energy consumption and cost.
Check the water temperature at a hot water faucet soon after the tank aquastat has satisfied, and the circulator and the
boiler have turned off. Adjust as needed.
Lowering the aquastat setting will not have an immediate effect on the water temperature because the stored water
will have to be used and the aquastat must go through the cycle of heating cold water and satisfying at the new, lower
temperature. Additional temperature checks should follow the completion of a heating cycle. Further adjustments may be
required after you have used the storage tank
VI. Maintenance
The storage tank is intended to provide many years of reliable service. Components, such as thermostats and relief
valves, may be subject to failures that require service. Failure to use the correct procedures or parts can result in unsafe
operation.
The owner should arrange to have the following inspections and simple maintenance procedures done at the suggested
frequencies.
1.
Water Piping (Annual)
Check all piping for signs of leakage at the joints, unions and shut-off valves. Repair as required.
2.
Temperature and Pressure Relief Valve (Annual)
