QUICKDRAW→ Boiler Water Heater

3.When the demand is satisfied, the limit operating circuit opens and the valve actuator is de-energized. The actuator motor stops running and the actuator shaft spring returns to the retracted position causing the boiler water to divert through the bypass ports and return to the boiler water supply loop.

START-UP PROCEDURE

1.When placing the unit into operation, open relief valve to purge air from top of tank and begin to fill the tank with cold water. Check for plumbing leaks. Be sure the tank is completely filled before closing the relief valve.

CAUTION: Do not energize the heater until the tank is full of water. Serious damage may result.

2.Push control switch, located on the control box, to “ON” to activate the three-way valve and thermostats. Check the valve for operation; the valve actuator motor should “run” to open the valve when operating switch is pushed “on”. Check operating thermostat settings.

Temperature Setting: The operating thermostat is set at the factory at approximately 120°F and the upper operating thermostat (if supplied) is set at approximately 125°F. Adjustment may be made by turning the thermostat’s dial to the desired temperature. The temperature limiting device is factory set at 200°F.

CAUTION: Gradually introduce fluids to the unit. Failure to do so can cause damage to the heat exchanger.

3.Push the operating switch to “OFF” before opening manual main boiler water supply valve. Do not admit boiler water to the unit suddenly when empty or cold to prevent thermal shock. Gradually open boiler water supply valve until all passages of the heat exchanger are filled. Slowly bring the unit up to temperature.

4.Do not operate unit under conditions in excess of those specified on nameplate.

WARNING: Failure to operate the heat exchanger within the design pressure and temperature on the nameplate may result in damage to the heat exchanger and potential injury to adjacent personnel.

5.Open nearby hot water tap to maintain a flow of water through the tank when starting up units. Regulate flow of water through the tank to allow the control valve to cycle off and on, and check operation of all safety and operating controls.

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