valutazioni - 3, GPA: 5
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2 2 GENERAL SAFETY To meet commercial hot water use needs, the high limit safety control on this water heater is adjustable up to 210°F. However, water temperatures over 125°F can cause instant severe burns or death from scalds. When supplying general purpose hot water, the recommended initial setting for the temperature control is 125°F. Safety and energy conservation are factors to be considered when setting the water temperature on the thermostat. The most energy-efficient operation will result when the temperature setting is the lowest that satisfies the needs of the application. Water temperature over 125°F can cause instant severe burns or death from scalds. Children, disabled and elderly are at highest risk of being scalded. • Feel water before bathing or showering. • Temperature limiting valves are available. NOTE: When this water heater is supplying general purpose hot water for use by individuals, a thermostatically controlled mixing valve for reducing point of use water temperature is recommended to reduce the risk of scald injury. Contact a licensed plumber or the local plumbing authority for further information. Maximum water temperatures occur just after the heater’s burner has shut off. To determine the water temperature being delivered, turn on a hot water faucet and place a thermometer in the hot water stream and read the thermometer. Water temperature over 125°F can cause instant severe burns or death from scalds. Children, disabled, and elderly are at highest risk of being scalded. See instruction manual before set- ting temperature at water heater. Feel water before bathing or show- ering. Temperature limiting valves are available, see manual. Time/Temperature Relationships in Scalds The following chart details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for your applications. Water Time to Produce Temp. Serious Burn 120°F More than 5 minutes 125°F 1-1/2 to 2 minutes 130°F About 30 seconds 135°F About 10 seconds 140°F Less than 5 seconds 145°F Less than 3 seconds 150°F About 1-1/2 seconds 155°F About 1 second Table courtesy of The Shriners Burn Institute Table A: Time to Produce Serious Burn 3 COLD WATER START Before arriving at the job site to begin the installation, it's important to first inspect the system and determine what materials you will need. Some parts are included with the controller while others you will need to provide. 1 Control Box 1 Temperature Sensor 1 Valve assembly with actuator (Shipped separately) Wiring and mounting hardware (Provided by installer) INSTALLATION Check the Power Source CAUTION: Do not use for swimming pool applications WARNING: Using a multi-meter, check the following voltages at the circuit breaker panel prior to connecting any equipment. Make sure proper polarity is followed and house ground is proven. CIRCUITBREAKERWHITEGROUNDBLACKGREEN ABC Fig. 1: Wiring Connections Check the power source: AC = 108 VAC Minimum, 132 VAC MAX AB = 108 VAC Minimum, 132 VAC MAX BC = <1 VAC Maximum Mounting the Control Box The control box should be mounted on the side of the heater to which the system piping and valve assembly are to be attached. The controller should be mounted Fig. 2: Multi-meter so as to provide maximum support by using the mounting holes provided on the base of the controller to the side center brace on the heater. You will need to drill mounting holes and holes through the heater side panel for the routing of wiring and the sensor. A template is supplied for field-installed kits to locate the control box properly. Attaching the Temperature Sensor Avoid routing wiring on or near other electrical wires, conduit, motors, spark igniters or other sources of high, intermittent voltage or current. The sensor should be placed in the dry well on the inlet header. Ensure it is installed using thermopaste (field supplied) and it is held firmly at the bottom of the well. Connecting the Valve Assembly Connect valve assembly “T CONNECTION “ into the piping with the actuator input wiring facing the heater side panel, as shown below. Route wiring to the control thru the bottom panel knockouts to TB2. Refer to the wiring diagram provided on the inside of control cover assembly. NOTE: Four knockouts are located on the bottom of the control for ease of installation. 4 NOTE: If a “DIP” switch is provided on the control PCB, verify that the switch settings are correct: 1 = OFF, 2 = ON, 3 = OFF. Models X 302B-902B 7.0. 992B-2342B 13.20. LEFT SIDE Fig. 3: Component Locations — Hi Delta Connecting Power to the Controller Supply power from the 120 VAC power input from the heater to the controller power inputs Terminal Block (TB1). This is accomplished by connecting wiring from the control box to the heater TB1 board 120 VAC power input connections. Refer to wiring diagrams. Reset Switch Fig. 4: Location of TB1 in Control Box OPERATION Verify the following upon a CALL FOR...