Operation - Xylem McDonnell & Miller 47 Series Instruction Manual

Failure to follow this warning could cause property damage, personal inj ury or death.
CAUTION:
A more frequent replacement interval may be necessary based on the condition of
the unit at time of inspection. McDonnell
of installation or two (2) years from the date of manufacture.

OPERATION

All Models
• Maximum Water Pressure: 150 psi (10.5 kg/cm
• Maximum Water Temp: 120˚F (49˚C)
• Water Connection Size:
47/47-2
• Maximum Boiler Pressure: 25 psi (1.76 kg/cm
247/247-2
• Maximum Boiler Pressure: 30 psi (2.1 kg/cm
Electrical Ratings
Motor Switch Rating (Amperes)
Voltage Full Load
120 VAC 10.2
240 VAC 5.1
Series 47/47-2 Operating Levels
Series 47 Water Feeders and Series 47-2
Combination Water Feeder/Low Water Cut-Off
maintain minimum water level in the boiler during
normal operation.
Series 47-2 Combination Water Feeder/Low
Water Cut-Off shuts off the burner if the boiler
water level drops 1 3/16" (30mm) below the water
feeder's closing level.
Series 47-2 Combination Water Feeder/Low
Water Cut-Off allows the burner to operate on
demand as the water level is restored to its
proper level.
2
/ " NPT
1
2
Locked Rotor Pilot Duty
61.2
125 VA at 120
or 240 VAC, 60 Hz
30.6
Miller s warranty is one (1) year from date
& '
2 )
2 )
2 )
Feeder keeps water
level 3
above center of lower
gauge glass tapping
If extreme priming or
foaming causes water
line to fall 1
below feeder closing
level, cut-off switch
stops the burner
When water level is
restored
above emergency.
Cut-off switch starts
burner and the water
feeder resumes
control
Water Feeder
Closing Level
7 / " (87mm)
16
3 7 / " (87mm)
16
Low
Water Cut-Off
3
/ " (30mm)
16
2 1 /
Burner Starts
1
/ " (13mm)
2
2 3 / " (70mm)
4
" (57mm)
4