Product Overview

39
Boiler Controls
Boiler Controls
McDonnell & Miller
ABCDEFGH J
NPT NPT
16
1
⁄2 (165) 2
9
⁄16 (65) 1 5
5
⁄32 (131) 9
3
⁄8 (238) 3
1
⁄8 (79) 10
1
⁄2 (267) 5
1
⁄8 (130)
CUT OFF
LEVEL
B
C
G
H
F
E
A
D
J
Series 63
Series 63
Low Water Cut-Offs
• For residential, commercial, and industrial applications
• Heavy duty
• Includes No. 2 switch
• Optional manual reset available
• Maximum boiler pressure 50 psi (3.5 kg/cm
2
)
• Use with TC-4 on hot water systems
Ordering Information
Dimensions, in. (mm)
Model Part Weight
Number Number Description lbs. (kg)
63 142400 Low water cut-off 13.5 (6.1)
63-B 142700 63 w/ float block 15.0 (6.8)
63-BM 143300 63 w/float block & manual reset 15.0 (6.8)
63-M 143100 63 w/manual reset 14.0 (6.4)
Electrical Ratings
®
®
Motor Switch Rating (Amperes)
120 VDC .5 Amp
Voltage Full Load Locked Rotor Pilot Duty
120 VAC 10.2 61.2
125 VA at
240 VAC 5.1 30.6
120 or 240 VAC
60 Hz
Low Water Cut-Offs – Mechanical
For Steam and Hot Water Boilers
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