Page 2 - DIMENSIONS
MODEL CHPES-6A through CHPES-180A DIMENSIONS Pump SolenoidConnectionConduit Box Control PanelStandard WhenThree (3) orMore Contactorsare Used 7/16" Bolt Hole Typical Steam Outlet Sight Glass Element ElementAccess Door OperatingPressureControls ControlCircuit Fuse Control CircuitOn/Off Switchwith...
Page 3 - Model; To avoid electrical shock hazard, boilers
Typical Plumbing Installation of a Steam Boiler with Condensate Return System Type CHPES — Dimensions (In.) DIMENSIONS INSTALLATION Model A B* C D E F G H I J K L CHPES-6A 37 22-1/2 30 15-1/4 20 30-1/2 9-1/2 16 1/2 1 1/2 1/2 CHPES-9A 37 22-1/2 30 15-1/4 20 30-1/2 9-1/2 16 1/2 1 1/2 1/2 CHPES-12A 37 ...
Page 4 - Diagram 1; WIRING; Hazard of Shock. Disconnect all power; SPECIAL INSTRUCTIONS FOR CUSTOMERS SUPPLY-; Export
Diagram 1 3 Phase Voltage 3 Phase Voltage 3 Phase Voltage Boiler 208 240 480 Boiler 208 240 480 Boiler 208 240 480 WIRING TYPICAL WIRING DIAGRAMS WARNING: Hazard of Shock. Disconnect all power before working on boiler. Boilers must be effectivelygrounded in accordance with the National ElectricalCod...
Page 5 - Diagram 2; TYPICAL WIRING DIAGRAMS; Diagram 3
Diagram 2 TYPICAL WIRING DIAGRAMS 2PS BR Heater Contactors Feed Water Boiler On 3 GND B FU12 B 1PB Off 2 GND 1 GND 1 HTR C1 FU1 FU2 FU3 FU11 FU10 H1 H2 X1 X3 L3 1L1 1L3 1L2 L2 L1 X2 X4 Optional Transformer 1 1 C1 2 2 C2 R 1LT Y On IFS O 1PS O O W Feed Water Electrical Connection 2 1 2TB 2 GND 1 HTR ...
Page 6 - Diagram 4; Diagram 5
Diagram 4 TYPICAL WIRING DIAGRAMS 2PS BR Heater Contactor Feed Water Boiler On 3 GND BFU15 B 1PB Off 2 GND 1 GND 1 HTR C1 FU1 FU2 FU3 FU14 FU13 H1 H2 X1 X3 L3 1L1 1L3 1L2 L2 L1 X2 X4 Optional Transformer 1 1 C1 2 2 C2 R 1LT Y On IFS O 1PS O O W Feed Water Electrical Connection 2 1 2TB 2 GND 1 GND 2 ...
Page 7 - Diagram 6; Diagram 7
Diagram 6 TYPICAL WIRING DIAGRAMS 2PS BR Heater Contactors Feed Water Boiler On 3 GND B FU18 B 1PB Off 2 GND 1 GND 1 HTR C1 FU1 FU2 FU3 FU17 FU16 H1 X1 X3 L3 1L1 1L3 1L2 L2 L1 X2 X4 Optional Transformer 1 1 C1 2 2 C2 R 1LT Y On IFS O 1PS O O W Feed Water Electrical Connection 2 1 2TB 1 GND 2 GND 1 H...
Page 8 - Diagram 8; Diagram 9
Diagram 8 TYPICAL WIRING DIAGRAMS FU 1 2 3 FU 4 5 6 FU 7 8 9 C1 C3 C2 C4 FU 10 11 12 C5 FU 13 14 15 C6 FU 16 17 18 5 HTR 4 HTR 3 HTR 6 HTR 2 HTR 1 HTR 1 2 2TB 1TB 3 GND 2 GND 1 GND FU24 1PB 3 GND C2 C6 C5 C4 C3 2PS 3PS 1PS On Off FU24 IFS O O O Y BR B B 1PB 1 1 2 2 W R Boiler On Feed Water Heater Co...
Page 11 - This is to prevent possible element; Turn boiler switch to “ON” position,; pump or solenoid; Checking low water cutout switch operation,; open drain; Turn off boiler. Reinstall contactor; Be sure all electrical connections are tight; Figure 1; — Automatic Reset Low-Water Cutoff Junction Box
After proper wiring and piping of boiler system is complete, testing ofcontrols can start. Before testing controls, it is recommended that all contactor fusing be removed. This is to prevent possible element failure under test conditions. A. OPERATING AND TESTING THE McDONNELL & MILLER LOW WATER...
Page 12 - CUT OUT; ting minus the differential setting, equals; CUT IN; pressure of the; HIGH LIMIT PRESSURE CONTROL OPERATION; Figure 2 — Pressure Control; OPERATION; For best boiler performance, a 1/4” less steam valve; MANUAL BLOWDOWN INSTRUCTIONS; Blowdown is an essential part of boiler operation. It is the best
B. ADJUSTING OPERATING PRESSURE CONTROLS1. Chromalox boilers are supplied with operating and high limit pres-sure controls. One is used for controlling the operating pressure ofthe boiler while the other is used as a high limit control. To deter-mine the difference in the controls, the high limit ha...
Page 13 - INITIAL TESTING —; Automatic Blowdown Control Cabinet; Display View of Automatic Blowdown Control Cabinet; Wiring Diagram for Automatic Blowdown
OPERATION AUTOMATIC BLOWDOWN INSTRUCTIONS(IF FURNISHED) The Automatic Blowdown is a device which automatically starts up your boiler in the morning; shuts it down at night and blows down(partially drains) the main boiler drain and the low water cut-off col-umn for a predetermined time interval each ...
Page 14 - OPTIONAL EQUIPMENT FOR STEAM BOILERS; Control will not work with de-ionized or; Typical Wiring for; Electronic Resistance Sensing
OPTIONAL EQUIPMENT FOR STEAM BOILERS AUXILIARY LOW WATER CUTOFFOperation Operation of this control is accomplished by sensing a minute AC current flowing between submerged contact probe in the boiler shell. When this minute AC current is conducted through an external cir- cuit resistance up to 40,00...
Page 15 - IF A CONTROLLER SEEMS TO OPERATE IMPROPERLY; Solid State Sequencer
OPTIONAL EQUIPMENT FOR STEAM BOILERS IF A CONTROLLER SEEMS TO OPERATE IMPROPERLY If the controller is suspected of operating improperly, it may be further checked as follows: 1. Leave the controller installed where it is, but disconnect all powerto the boiler. 2. Loosen the cover screw below the mai...
Page 16 - HIGH PRESSURE FEED; High pressure makeup water pumps are used when water pressure; Installation; Hazard of Electric Shock. Water feed system; WATER FEED SYSTEMS; Automatic High Pressure Water Feed Pump/Motor Assembly; Pump Motor Dimensions
HIGH PRESSURE FEED High pressure makeup water pumps are used when water pressure does not exceed boiler pressure by more than 10 psi and when con-densate water is not returned to the boiler. Note: Consult factory or sales office for motor/pump sizing for appropriate water feed system. Installation W...
Page 17 - CONDENSATE RETURN SYSTEMS; MAINTENANCE; INSTRUCTIONS FOR ELEMENT REPLACEMENT; Before installing your new elements, be sure
30 Gal. Condensate Return System WATER FEED SYSTEMS CONDENSATE RETURN SYSTEMS Chromalox condensate return systems are used wherever condensed steam can be collected for reuse in the boiler. Significant energy can besaved by returning condensate to the boiler. The condensed water is freefrom corrodin...
Page 18 - READ COMPLETELY BEFORE STARTING WORK; Disconnect boiler from electric power supply at; main safety; Then, turn boiler switch to “off” position.
18 MAINTENANCE RENEWAL PARTS IDENTIFICATION Drain Blowdown Valve Drain Blowdown Valve Water Level Sight Glass On/Off Switch andPilot Light Steam Outlet Operating Pressure ControlRange 10-300 Psi Safety Valve Manual Reset HighLimit Control Pressure Gauge, 0-600 Psi McDonnell & Miller #194Low Wate...
Page 19 - RENEWAL PARTS IDENTIFICATION
Part Description Part Number 1/4” Ball Valve (Pressure Gauge) . . . . . . . . . . . . . . . . . . . . . . . . 344-121194-007 Blowdown Valve 1” CHPES-24A through 180A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344-121194-042 Pressure Gauge 3-1/2” 0-600 psi CHPES-100A th...