Chromalox CAS-20CM user manual

Summary of the content on the page No. 1

Installation,Operation
4 cas
and
(Supersedes PQ435) PQ435-1
RENEWAL PARTS IDENTIFICATION 161-562795-001
JUNE, 1994
Type CAS-20CM Electric Steam Boiler
(Standard Trim is 100 PSI — 0-90 PSI Operating Pressure Range)
Boiler Serial No. ______________________________________________ Power Circuit Voltage __________________________
Model No. ___________________________________________________ Control Circuit Voltage__________________________
National Board No. ________________________________________

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INSTALLATION WARNING: To avoid electrical shock hazard, boilers 3. When any type of feed other than a pump feed is used, the must be suitably grounded to earth. water supply line pressure must be 10 pounds greater than the boiler operating pressure to assure proper water level in boiler. Note: Chromalox boilers are pre-tested before shipment; no inter- Lack of water can cause heater failure. Keep feed water line nal piping or wiring is necessary. WARNING:Substitution of valves open at all times.

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SCHEMATIC WIRING DIAGRAM Wire Color Code — B = Black W = White R = Red O = Orange Y = Yellow GR = Green BL = Blue HTR O OPERATION SOLID STATE FLOATLESS LIQUID LEVEL once a day. In soft water areas, once each week. If water is known CONTROL SYSTEM to be corrosive, consult water treating specialists to recommend This boiler is equipped with a solid state, floatless liquid level water treatment needed to insure corrosion free boiler operation. If control which operates by sensing the electric

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MAINTENANCE WARNING: Hazard of Electric Shock. Disconnect all Normal Operation Sequence. power before working on boiler. 1. Water drops below HI probe. After 10 second delay, water feed energizes refilling boiler. 1. A monthly inspection should be made to ensure that all electri- 2. Water reaches HI probe and turns off water feed. cal connections are tight. 1 1 3. Sight glass should be /3 to /2 full. Heater contactor will cycle at 2. When steam or water leaks are observed, fittings should be ope

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RENEWAL PARTS IDENTIFICATION HEATING ELEMENTS PRESSURE CONTROLS Description Part Number Description Part Number 20kW 240V 1PH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155-300121-006 Operating Pressure Control Auto Reset . . . . . . . . . . . . . . . . . 292-300031-001 20kW 208V 1-3PH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155-554735-023 High Limit Pressure Control – Auto Reset . . . . . . . . . . . . . . . 292-300031-001 16/20kW 208/230V 3PH

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Limited Warranty: Please refer to the Chromalox limited warranty applicable to this product at http://www.chromalox.com/customer-service/policies/termsofsale.aspx. 2150 N. RULON WHITE BLVD., OGDEN, UT 84404 Phone: 1-800-368-2493 www.chromalox.com