Dunkirk H2OBT Stainless Steel Buffer Tanks User Manual
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The buffer tanks are all stainless steel construction, insulated with a thermoplastic jacket.
WARNING
!
DO NOT use in potable water systems.
WARNING
!
Use this vessel only in hydronic heating systems. The installer must comply with all plumbing codes.
Do not operate above the temperature or pressure specified on the rating plate. Failure to comply may result in personal
injury, property damage, or death.
An example of piping a buffer tank follows showing a water source heat pump application. In all applications note that
the tank top fitting should be piped the distribution supply line to the air purger and vent. This way the tank will be self
venting and no additional air vent is needed to install or maintain.
The objective in any application is to pipe the buffer tank such that the heating or cooling source is hydraulically
uncoupled from distribution system.
Model
Volume
(gal.)
A
Height
B
C
D
Diameter
Connections
(NPT)
Max. Working
Pressure (psi)
Approx.
Ship wt.
(lbs.)
H2OBT22XXX
22
24.5
15.0
8.0
22.5
1¼"
60
35
H2OBT40XXX
40
42.0
29.0
9.0
22.5
Specify
60
87
H2OBT60XXX
60
42.0
29.5
9.5
26.5
1¼", 1½"
60
115
H2OBT80XXX
80
52.0
39.5
9.5
26.5
or 2" NPT
60
125
H2OBT115XXX
115
72.0
59.5
9.5
26.5
or 2" NPT
60
160