Weil-McLain EG - Manual (Page 11)

Part Number 550-110-639/0703 11
EG, PEG, EGH G
AS
-
FIRED
B
OILERS
—
SERIES
4 — B
OILER
M
ANUAL
Piping connections
(continued)
2
Figure 15 Recommended piping connections
EGH steam boilers
Figure 14 Recommended piping connections
EG steam boilers
Steam boilers
1. Refer to table and Figures 14 or 15. Pipe exactly as
shown. Satisfactory operation of a steam heating
system depends on adequate condensate return to
boiler to maintain a steady water level. Avoid adding
raw make-up water. Where condensate return is not
adequate, install low water cut-off and pump control,
condensate receiver, and condensate boiler feed pump.
Refer to Figure 16 for sizing.
2. Install steam relief valve vertically in “E” tapping.
Relief valve discharge piping must be piped
near floor close to floor drain to eliminate
potential or severe burns. Do not pipe to
any area where freezing could occur. Do
not plug, valve or place any obstruction in
discharge line.
3. EGH only - install 3/4" system blow-off (drain) valve
in lowest part of return piping close to boiler.
Figure 16 Condensate receiver capacity
NOTE : Steam supply must be on same end as controls. Return may be from
either end.