Overview of Primary Product
Part Number 550-141-186/0914
22
LGB
3ERIES'AS&IRED"OILER"OILER-ANUAL
:
1
2
3
Other manufacturers’ controls providing similar function may be used, if properly located and selected to handle
BOILEREVAPORATIVECAPACITY7EIL-C,AINDOESNOTRECOMMENDUSING-C$ONNELL-ILLER-ODELOR
Cannot be used as backup water level controls.
When pump control is used with feed water tank, install pump control on boiler and makeup water feeder on tank.
Use separate low water cutoff on boiler when backup is needed. Do not install combination low water cutoff and
feeder as backup control on boiler. Feeder will operate before pump control operates.
6
Install boiler controls
Controls
Relief valve stem
vertical only
8/
Recommended locations
for steam boiler low water
cutoffs, water feeders and
pump controllers
(See Figure 23, page 23)
Install relief valve with spindle in vertical position. Relief valve discharge
piping must be piped near floor close to floor drain to eliminate potential
of severe burns. Do not pipe to any area where freezing could occur.
Failure to properly install, pipe and wire boiler controls may result in severe
damage to the boiler, building and personnel.
)NSTALLPRESSUREOPERATINGANDLIMITCONTROLSWATERLEVELCONTROLSGAUGEGLASSANDPRESSURE
gauge as in
Figures 22 and 23. Install relief valve(s), blowdown valve and other items as
given in
Figures 11a or 11bPAGESAND
2. Install water level control(s) as shown in Figures 22 and 23 and Table 4, below. If water
level control to be used is not shown in the table, install according to manufacturer’s in-
structions.
2
)NSTALLCONTROLSINTHETAPPINGSGIVENINFigures 11a or 11bPAGESAND
2. Low water cutoff for a water boiler:
A -USTBEINSTALLEDONANYWATERBOILERIFTHEBOILERISLOCATEDABOVERADIATIONLEVEL
B -AYBEREQUIred on water boilers by certain state, local or territorial codes or insurance
companies.
3. If a low water cutoff is used on a water boiler, use a control designed especially for water
installation. See control tapping locations in
Figures 11a and 11bPAGESANDFOR
location, or install in piping above boiler.
4. Dual limit control settings:
A ,OWSETACCORDINGTODESIGNREQUIREMENTS
B (IGH
o
higher than lowLIMIT
o
F maximum.
5. Install optional controls per control manufacturer’s instructions.
(
Location 1 A Location 2 B
Primary water level control
(Note 1)
(above bottom of
First backup water level
control (Note 1)
(above bottom of
61 and 63 1” –– ––
150S-MD, 93 (Notes 2 & 3) –– ––
51-2 and 51-S-2 (Note 2) –– ––
61 and 63 1 ½” 61 and 63 ½”
150S-MD, 93 (Notes 2 & 3) 61 and 63 ½”
51-2 and 51-S-2 (Note 2) 61 and 63 ½”