Weil-McLain 94 Series Manual page 30

Weil-McLain 94 Series 3 Water and steam boilers —
Install steam boiler controls
Figure 37
Float-type water level control locations
Primary Casting line Back-up
water level height above water level
control bottom of control
gauge glass
Note 1 "A" Notes 1, 2
¼" None
61, 63
½" 61, 63
2" None
2" 93, 193, 94
2" 61, 63
93,
193,
94
(894 to
1594 only)
(Note 3)
2"
51-S-2
(all sizes)
51-2
51-S-2
1"to 1¼" None
(Note 3)
Notes:
1. Other manufacturers' controls providing similar
functions may be used if properly located and
selected.
2. Use low water cut-off function only. Pump
controller function must only be handled by the
primary control.
3. When pump control is used with feedwater tank,
install pump control on boiler and make-up
water feeder on tank. Use separate low water
cutoff on boiler when back-up is needed. Do not
install combination low water cutoff and feeder
as back-up control on boiler. Feeder will operate
before pump control operates.
30
Casting line
height above
bottom of
gauge glass
"B"
—
¼"
—
¼"
¼"
51-2
¼"
– or –
—
for Gas, Light Oil, & Gas/Light Oil-Fired Burners
(continued)
Figure 38
Water level control locations (see Figure 37)
Normal water line is
at the center of the
gauge glass.
Part No. 550-110-275/1018