Évaluations - 4, GPA: 4.3
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______________________________________________ Power Circuit Voltage __________________________ Model No. ___________________________________________________ Control Circuit Voltage__________________________ National Board No. ____________________________________________ Amps ___________Phase __________Cy __________ IMPORTANT – This data file contains the National Board Registration Certificate approving your boiler. It must be kept near the boiler at all times. Model Electric Capacity BHP Rating Voltage Phase Amperes Drawn Contactor 20 kW 2.0 208 1 96 50A, 4 Pole 16/20 kW 1.6/2.0 208/230 3 45/51 60A, 3 Pole CAS-20CM 20 kW 2.0 240 1 84 50A, 4 Pole 20 kW 2.0 346 3 34 40A, 3 Pole 20 kW 2.0 380 1 53 60A, 2 Pole 20 kW 2.0 480 3 24 30A, 3 Pole Note: Control circuit 120V © 2010 Chromalox, Inc. INSTALLATION WARNING: To avoid electrical shock hazard, boilers must be suitably grounded to earth. Note: Chromalox boilers are pre-tested before shipment; no internal piping or wiring is necessary. WARNING: Substitution of components or modification of wiring without prior consent of Chromalox voids warranty. 1. Bolt unit securely to level floor or platform. Note: A minimum distance of 18 inches from wall, other equipment, etc. must be allowed for removal of the elements. 2. Complete all piping to boiler. Connect water line to tagged fitting on the motor and pump assembly if used, or to tagged fitting on water control feeder. 3. When any type of feed other than a pump feed is used, the water supply line pressure must be 10 pounds greater than the boiler operating pressure to assure proper water level in boiler. Lack of water can cause heater failure. Keep feed water line valves open at all times. 4. Connect steam line (with outlet valve) to boiler steam outlet. 5. Open all gauge valves and steam outlet valve; keep drain valve closed. Note: The safety valve should be provided with a drain line sized no less than the outlet size of the valve and routed per local codes. 6. Floor drain to be provided directly below unit. Type CAS Electric Steam Boiler WIRING WARNING: Hazard of Electrical Shock. Disconnect all power before working on boiler. Boilers must be grounded in accordance with the National Electrical Code (NEC) standards to avoid shock hazard. WARNING: Use 90°C copper conductors only. 1. Select proper wire gauge and type for supply conductors in accordance with the National Electrical Code and local wiring codes following wiring diagram supplied (See recommendations for disconnect switches and fusing). Note: Purchaser should use a safety disconnect employing circuit breakers or fuses between the main power source and the boiler. This overcurrent protection should be installed in addition to any other supplementary fuses or circuit breakers provided as an integral part of the boiler. 2. If a separate control circuit is used, the control circuit should be connected to the control terminal block and the circuit protected by overcurrent devices in accordance with the National Electrical Code. 3. Chromalox boilers are solid state devices. Since boilers are connected to water lines, these devices are susceptible to voltage surges and lightning damage. Industrial type lightning protectors should be installed per manufacturer’s recommendations at your service entrance. 4. Be sure that all electrical connections are sufficiently tightened. Loose connections will cause overheating and damage to the electrical wiring. 5. Special instructions for customers supplying their own condensate or pump system. A. Check the voltage of the motor before making the wiring connection. The motor should always match the voltage of the control circuit. Standard control circuit voltage is 120 volts ± 10 volts. B. Internal water feed relay is rated at a maximum of 1/3 H.P., 120 volts. Motors rated greater than 1/3 H.P., or other than 120V, single phase, require the use of a suitable motor starter. 6. After all service connections are made, open feed water supply valve and energize the boiler. The feed water solenoid will open, fill the boiler to the proper water level and automatically shut off. The feed solenoid will continuously cycle on and off as the boiler requires water. If, for any reason, the water drops below the minimum safe operating level, the boiler’s electrical circuits, except the feed solenoid will be de-energized automatically. Upon refilling to the proper level, the boiler will automatically restart. -2 SCHEMATIC WIRING DIAGRAM HTROWire Color Code — B = BlackW = WhiteR = RedO = OrangeY = YellowGR = GreenBL = Blue OPERATION SOLID STATE FLOATLESS LIQUID LEVEL CONTROL SYSTEM This boiler is equipped with a solid state, floatless liquid level control which operates by sensing the electrical resistance of water. Note: Control will not work with de-ionized or demineralized water. Two probes are provided. The HI probe activates and controls the feed water relay. The LOW probe is a safety back-up probe that turns off the power to the elemen...