Overview of Primary Product

50
Boiler Controls
McDonnell & Miller
• For commercial and industrial low or high pressure
steam boilers
• Maintains consistent water level regardless of pressure
• For boilers of any steaming capacity
• No. 5 Switch included
• Magnetic repulsion eliminates need for bellows
• Optional features
–Manual reset
• 7B switch (135ohm proportional control signal) to
maintain constant boiler water level
• 1" NPT connections
• Maximum pressure 150 psi (10.5 kg/cm
2
)
S
ERIES
93
O rdering Info r m a t i o n
Model Part Weight
Number Number Description lbs. (kg)
9 3 1 6 2 3 0 0 Combination low water cut-off/ 35.0 (15.9)
pump controller w/No. 5 switch
9 3 - M 1 6 2 5 0 0 93 w/manual reset 35.0 (15.9)
9 3 - 7 B 1 6 3 0 0 0 93 w/No. 7B switch 35.5 (16.0)
9 3 - 7 B - M 1 6 3 1 0 0 93-7B W/manual reset 35.5 (16.0)
Dimensions, in. (mm)
A B C D E F G H
NPT NPT
3
⁄
4
1 10
1
⁄
16
(256) 18
5
⁄
8
(473) 5
19
⁄
32
(142) 4
15
⁄
32
(113.5) 8
7
⁄
8
(225) 12
7
⁄
8
(327)
Series 93
Low Water Cut-Off/Pump Controllers
Electrical Ratings
345 VA at 120 or 240 VAC
L o w Water Cut-Offs – Mech a n i c a l
Combination Low Water Cut-Off/Pump Contro l l e rs for Steam Boilers
06. HotWtrLwco 50-61• 3/6/07 12:44 PM Page 50