IV) OPERATION | immediately. If it fails to reset completely and continues to | ||||||||||
1. | Follow boiler or heat source installation and operating | release water, the valve is not functioning properly and must | |||||||||
| instructions. | be replaced immediately. Close the cold water supply valve, | |||||||||
2. | Fill the tank (see “FILLING” section). | drain the tank as directed in the “Draining and Flushing” | |||||||||
3. | The boiler or water heating source should be set to pro- | section, and replace the T&P valve with a new one. Failure | |||||||||
| vide at least 11°C (20°F) higher water temperature than | to install and maintain an approved T&P valve will release | |||||||||
| the temperature setting of the storage tank | the manufacturer from any claim that might result from | |||||||||
4. | Turn power on, check for proper operation of boiler and | excessive temperature or pressure. In systems where the | |||||||||
| storage tank. | relief valve discharges periodically, this may be due to ther- | |||||||||
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| mal expansion or to a thermostat that is operating at too | |
Temperature Adjustment | high a temperature. If you suspect a malfunctioning thermo- | ||||||||||
The setting of 49°C (120°F) has been proven to be satis- | stat, contact a qualified service technician for repairs. | ||||||||||
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factory from the standpoint of operational costs and safety. | Draining and Flushing | ||||||||||
We recommend the thermostats remain set at 49°C | |||||||||||
(120°F). | Some service work to be performed on the tank requires the | ||||||||||
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| tank to be drained. It is also recommended that the tank be | |
If water temperature adjustment is required: | drained and flushed every 6 months to remove any sedi- | ||||||||||
1. | Turn "OFF" the electrical supply to the tank. | ment and lime which may build up in the bottom of the tank | |||||||||
2. | Remove lower access door. | during operation. Such buildup can result in noisy operation. | |||||||||
3. | Turn back insulation. | To drain the tank: | |||||||||
4. | Adjust thermostat to water temperature desired. | 1. Turn "OFF" the electrical supply to the tank. | |||||||||
5. | Replace insulation and access door. | 2. Close the cold water supply valve. | |||||||||
6. | Turn "ON" the electrical supply to the tank. | 3. Open a nearby hot water faucet served by the system. | |||||||||
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| 4. Connect a hose to the drain valve and route it to an ade- | |
V) MAINTENANCE | quate drain. | ||||||||||
T&P Valve Check | CAUTION! The water being drained can be extremely | ||||||||||
hot! The drain hose should be rated for at least 93°C | |||||||||||
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| CAUTION | (200°F). If the drain hose does not have this rating, open the | |||||
The | cold water supply valve and a nearby hot water faucet | ||||||||||
yourself or on the surroundings where it may cause dam- | served by the system until the water flow is no longer hot. | ||||||||||
age. | Close the cold water supply valve and resume. | ||||||||||
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| 5. Open the drain valve and allow all the water to drain | |
Do not attempt to operate this storage tank with the cold | |||||||||||
from the tank. | |||||||||||
water inlet valve closed. The Temperature and Pressure | |||||||||||
6. Open the cold water supply valve and flush the tank as | |||||||||||
Relief Valve must be manually operated at least once a | |||||||||||
needed to remove sediment and any other foreign mat- | |||||||||||
year. This involves opening the valve to check that it is flow- | |||||||||||
ter that may have entered the system. Close the cold | |||||||||||
ing freely and that there are no blockages. WARNING! | |||||||||||
water supply valve when clean water flows. | |||||||||||
WATER MAY BE HOT and water flow can be forceful. | |||||||||||
7. Perform any other servicing as required. | |||||||||||
Caution should be taken to ensure that: | |||||||||||
8. Close the drain valve, disconnect hose and refill the | |||||||||||
1. | No one is in front of or around the outlet of the T&P | ||||||||||
tank (see “FILLING” section). | |||||||||||
| valve discharge line. | ||||||||||
| 9. Turn "ON" the electrical supply to the tank. | ||||||||||
2. The water manually discharged will not cause any bod- | |||||||||||
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| ily injury or property damage. The water may be | Cathodic Protection | |||||||||
| extremely hot. | Your storage booster tank has been equipped with one or | |||||||||
While standing clear of the outlet (discharge water may be | |||||||||||
more anodes that protect the tank from corrosion. Over | |||||||||||
hot), lift the lever and let it snap shut. The water should stop | |||||||||||
time, as the anode works, it slowly dissolves and must be | |||||||||||
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| replaced. If the anode(s) is less than 10mm (3/8 in.) in diam- | |
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| Temperature and Pressure | ||||||||
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| Relief Valve |
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| eter, or has any of the inner steel core exposed, it must be | |||||
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| replaced. Depending on water conditions, an anode can last | |
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| Manual Relief Valve |
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| from one to ten years. Many localities treat their water and | |||
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| this can have a significant effect on the life of your heater. | |
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| Water conditioning, such as | |
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| the rate at which the anode(s) is consumed. Rapid depletion | |
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| can leave a heater unprotected causing a premature failure. | |
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| It is good practice to check the anode(s) annually to see if it | |
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| needs replacing. Operating a storage tank without an | |
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| actively working anode(s) will void the warranty. Failure to | |
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| maintain the anode may result in premature failure of the | |||||
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| Discharge line to drain | |||||||||
Figure 5: T&P Valve Test | storage tank due to corrosion and leaks. | ||||||||||
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| 5 - | |
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