Product Overview

66
Boiler Controls
McDonnell & Miller
Boiler Controls
• For receiver tanks in commercial or industrial applications
• Mounts directly on the receiver, eliminating need for
equalizing connections
• Quick-change replaceable cartridge valve and strainer
• Proportional feed action
• Mounting Flange – six
7
⁄16" (11.1mm) bolt holes on a 5
3
⁄4"
(146mm) bolt circle
• Optional features
– No. 2 switch
– Alternate valve orientation
• Maximum supply pressure 150 psi (10.5 kg/cm
2
)
• Maximum inlet water temperature 120˚F (49˚C)
• Maximum receiver pressure 25 psi (1.8 kg/cm
2
)
Series 847
Make-Up Water Feeder
Water Feeders – Make-Up
A B C D E F
NPT
7
5
⁄16 (186) 4
15
⁄16 (125) 4
5
⁄8 (117) 3
9
⁄16 (90)
1
⁄2 3
7
⁄16 (87)
Dimensions, in. (mm)
Capacities
DIFFERENTIAL PRESSURE IN POUNDS PER SQ. IN.
(Water pressure less boiler pressure)
4,000
lbs./hr.
BOILER
Btu/Hr.
(K-Calories/Hr.)
4,000,000
(15,800)
3,000,000
(11,900)
2,000,000
(7,900)
1,000,000
(4,000)
116
(1137)
87
(853)
58
(569)
29
(284)
16,000
12,000
8,000
4,000
000
BOILER
hp
(Kilowatts)
STEAM
Sq. Ft.
3,000
2,000
1,000
0
psi
(1814)
(kg/hr.)
(1361)
(907)
(454)
(0)
0 10 20 30 40 50 60 70 80 90 100
(kg/cm
2
)
(0) (.7) (1.4) (2.1) (2.8) (3.5) (4.2) (4.9) (5.6) (6.3) (7.0)
C
a
p
a
c
i
t
y
a
t
S
w
i
t
c
h
C
u
t
-
O
f
f
M
a
x
i
m
u
m
C
a
p
a
c
i
t
y
8
gpm
6
4
2
0
Series 847
C
A
B
D
E
F
WATER LINE
Ordering Information
Model Part Weight
Number Number Description lbs. (kg)
847 134300 Make-up water feeder 11 (5.0)
847-C 134350 847 w/alternate valve orientation 12 (5.4)
847-C-2 134400 847-C w/No. 2 switch 12 (5.4)