16
P/N 240009735, Rev. G [09/30/2016]
1.
Install safety relief valve using pipe fittings provided
with boiler�
2.
Install safety relief valve with spindle in vertical
position�
3.
Do not install shutoff valve between boiler and safety
relief valve�
4.
DO NOT pipe in area where freezing can occur� DO NOT
install shutoff valves, plugs or caps�
5.
Install discharge piping from safety relief valve� See
Figure #15�
• Use ¾” or larger pipe�
• Use pipe suitable for temperatures of 375°F (191°C)
or greater�
• Individual boiler discharge piping shall be
independent of other discharge piping�
• Size and arrange discharge piping to avoid reducing
safety relief valve relieving capacity below minimum
relief valve capacity stated on rating plate�
• Run pipe as short and straight as possible to location
protecting user from scalding and properly drain
piping�
• Install union, if used, close to safety relief valve
outlet�
• Install elbow(s), if used, close to safety relief valve
outlet and downstream of union (if used)�
8 - SYSTEM PIPING
Check local
codes for
maximum
distance
from floor
or allowable
safe point of
discharge.
SAFETY RELIEF VALVE
DISCHARGE
PIPING
Figure #15 - Discharge Piping From Safety
Relief Valve
WARNING
Burn and scald hazard� Safety relief valve could
discharge steam or hot water during operation�
Install discharge piping per these instructions�
!
