tem, check valves must be installed to prevent the circulator from pumping hot water into another tank and overheating it.
8.The use of a pressure regulator is optional, but recom- mended when the cold supply pressure is over 80 psi. Reducing the inlet pressure to
9.The water utility supply meter may contain a check valve,
i)Install a 125 psi pressure relief valve in the cold water supply line. Make sure that the discharge of this valve is protected from freezing and directed to an open drain.
ii)Install an expansion tank on the cold water supply line.
10.A vacuum relief valve may be installed to provide vent- ing of a closed system. Check local code requirements.
nection at the service panel to the ground screw at the junction box.
4.The thermostat is rated for a maximum inductive current of 7 FLA at 120 VAC. Do not exceed this rating for the circuit.
5.Do not install or connect electrical heating elements to this tank.
Filling
NOTE: When filling, avoid water leakage. Do not allow the insulation of the tank to get wet as water can cause electri- cal malfunction or reduce the effectiveness of the insulation.
1.To insure complete filling of the tank, allow air to exit by opening a hot water faucet that is served by the tank and is some distance away from the heater.
2.Ensure the storage tank drain valve is closed.
3.Open the cold water supply valve and fill the tank and piping system with water. When an uninterrupted stream of water, without apparent air bubbles, flows from the open hot water faucet, the system is full.
4.Close the open hot water faucet. Check the system for leaks, repair as necessary and retest.
5.Connect a hose to the drain valve and route to a suit- able drain. Open the drain valve and let water run to flush out any foreign matter that may have entered the system. Once flushed, close the drain valve and dis- connect hose.
Electrical Wiring |
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| Temperature Regulation | ||||||||
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| 120 VOLT SUPPLY |
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| DANGER |
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| CIRCULATOR |
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| JUNCTION BOX |
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| WIRE CONNECTORS |
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| BOOSTER TANK |
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| MUST BE |
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| BLACK |
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| GROUNDED TO |
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| THE ELECTRICAL |
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| SUPPLY SERVICE. |
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| In order to reduce the risk of scald injury, the thermostat is | |||
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| THERMOSTAT | ||||||||
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| factory set to 49°C (120°F). The thermostat operates auto- |
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| matically and can be adjusted to provide higher or lower |
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| water temperature as needed. A mixing valve in connection |
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| with a higher temperature setting should be used to reduce | ||||||
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| USE ONLY TYPE TEW 105°C WIRE. |
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| risk of scald injury. |
| Figure 4: Wiring Diagram |
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Electrical wiring must be in accordance with local codes; or |
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| CAUTION | |||||||||||||||||
in the absence of local codes with the National Electrical |
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| Increasing the thermostat setting above the | |||||||||||||||||
code ANSI/NFPA 70 or The Canadian Electrical Code, as |
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applicable. |
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| sive energy. Hotter water increases the risk of scald injury. | ||||
1. Supply 110/120 volt, 60Hz power, to the junction box |
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| IMPORTANT | |||||||
2. Connect the circulator pump in series with the thermo- |
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| RISK OF SCALDING. Hot water will cause third degree | |||||||||||||||||
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| burns in 6 seconds at 60°C (140°F), in 30 seconds at 54° | |||||||
3. A ground wire must be supplied from the ground con- |
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| - 4 |
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