76
106375-01 - 4/16
B
C
A
At least eight pipe diameters upstream of first tee.
A.
No further apart than 12" (~30 cm) or four pipe diameters, whic
hever is smaller.
B.
At least 18" (~46 cm) of straight pipe for
Conventional
Air Scoop.
C.
From System
To
System
Flow Check
Flow
Check
Full Port Isolation Valve
Full Port Isolation
Valve
Optional Full Port Isolation
Valves
Optional Full Port Isolation
Valves
Heating
Circulators
Indirect
Circulator
Indirect Supply
Indirect Return
Expansion
Tank
Fill Valve
Backflow Preventer
Cold Water Line
Air Separator
& Air Vent
Close Nipple
(Locate Header Sensor
As Close As Possible To Downstream Tee)
Y-Strainer
(Recommended)
Secondary Unions Not Required; Optional Location Shown
Drain Valve
Relief Valve
Header Temperature
Sensor
(When Used)
Indirect Domestic Water Heater (IWH)
Boiler Circulator
Full Port Isolation Valves
To System
System
Zone
Valves
Heating System Circulator
Optional Zone Valve Controlled System
Hydraulic Separator May Be Substituted
For Tees
1
Figure 9.7c: Piping Method #1 - Near Boiler Piping - Heating Plus System Piped Indirect W
ater Heater
HX Inlet Bottom Connection; HX Outlet Bottom Connection
IX. System Piping
(continued)
CAUTION
:
It
is
the
installers
responsibility
to
select
boiler
piping
configurations
that
provide
the proper flow rates and performance for the
boiler and indirect water heater
.
