NOTE
G. Remove wire from Terminal '6' and connect to Terminal 'BNO'.
F. Remove wire from Terminal '5' and connect to Terminal 'BCOM'.
E. Remove wire from Terminal '4' and connect to Terminal 'BNO'.
D. Remove wire from Terminal '2' and connect to Terminal 'PNO'.
C. Remove wire from Terminal '1' and connect to Terminal 'PCOM'.
NOTE: Power wires connected to Terminals 'H' and 'N' on 150E should be from the boiler's control transformer connections which are usually designated 'L1' and 'L2'. The 150E SHOULD NOT be powered as part of any operating or safety circuit.
B. Connect 'Neutral' (L2) wire from power supply to Terminal 'N'.
A. Connect 'Hot' (L1) wire from power supply to Terminal 'H'.
Pump Terminals
Burner Terminals
Probe LED's
0-60 Second Adjustable Burner Off Delay
CUT-OFF AND ALARM SWITCH
LOW WATER CUT-OFF AND ALARM SWITCH
Š2002 ITT Industries Inc. Printed in U.S.A. 10-02 210543
3500 N. Spaulding Avenue Chicago, Illinois 60618 tel: 773 267-1600 fax: 773 267-0991 www.mcdonnellmiller.com
110 Volt Input Test from Boiler Switch Manual Reset Circuit Power (If applicable) Low Water LED Green LED Red
H
N
PNO
PNC
PCOM
BNO
BNC
BCOM
Top Middle Bottom Blue Yellow Red
Probe Connections
Electronic Relays (Series 150E and 157E)
PUMP SWITCH
ALARM LOW WATER PUMP CIRCUIT CUT-OFF CIRCUIT TERMINALS TERMINALS TERMINALS
Mercury Switches (Series 150 and 157)
30
Read and follow installation instructions included with 150E/157E control.
PUMP SWITCH
PUMP ALARM LOW WATER CUT-OFF CIRCUIT CIRCUIT TERMINALS TERMINALS TERMINALS
Snap Switches (Series 150S and 157S)
Secs.
Wiring connections for a Series 150E/157E when used as a replacement for a Series 150/157 (mercury) or 150S/157S (snap) switch unit.
Installation & Maintenance Instructions MM-416
60 0