Operating instructions

STEAM SUPPLY MAIN -SLOPE DOWN FROM
HIGH POINT ABOVE BOILER AN0 DRIP ENDS
OF MCllNS INTO WET RETURN
LOW POINT OF SUPPLY MAIN TO BE NOT
LESS THAN
29' ABOVE WATER LlNE
PIPE DISCHARGE TO DRAIN
KEEP STEAM BOILERS FILLED
CLOSE OR SHOULOER NIPPLE
TO NORMAL WATER LlNE
1W.L
2" - GRAVITY RETURN
PREFERRED HARTFORO RETURN
4" - PUMP RETURN
CONNECTION
' GRAVITY RETURN
STEAM
- WET RETURN
PITCH DOWN TO BOILER
Fig. 7
Minimum Piping Recommendations
4 and 5 Section Steam Boilers
4" SUPPLY MAIN TO BE TAKEN
OFF TOP OF
WADER VERTICALLY OR AT
45' ANGLE.
4" HEADER -24. MIN. ABOVE WATERLINE
PREFERRED HARTFORD RETURN
KEEP STEAM BOILERS FILLED
CLOSE OR SHOULDER NIPPLE
TO NORMAL WATER LlNE
2" - GRAVITY RETURN
PREFERRED HARTFORD RETURN
4. - PUMP RETURN +
CONNECTION - GRAVITY RETURN
STEAM -WET RETURN
PITCH DOWN TO BOILER
PROVIDE
DRAIN COCKS FOR
FLUSHING BOILER AND SYSTEM
Fig. 8
Minimum Piping Recommendations
6 and 7 Section Steam Boilers
6