lp-219 Rev. 001 Rel. 000 Date 8.31.21
3
NOTE:
An automatic air vent is included with the buffer tank, and
must be installed in the port provided on the top of the tank.
Operating the buffer tank without the air vent will result in a leakage
of water and possible property damage. Such damages ARE NOT
covered by product warranty.
High heat sources (sources generating heat 100
o
F / 37
o
C or greater,
such as stove pipes, space heaters, etc.) may damage plastic
components of the buffer tank as well as plastic vent pipe materials.
Such damages ARE NOT covered by warranty. It is recommended to
keep a minimum clearance of 8” from high heat sources. Observe heat
source manufacturer instructions, as well as local, state, provincial,
and national codes, laws, regulations and ordinances when installing
this buffer tank and related components near high heat sources.
COLD WEATHER HANDLING
- If the buffer tank has been stored in
a very cold location (BELOW 0
o
F) before installation, handle with
care until the components come to room temperature. Failure to
do so could result in damage to the buffer tank.
Carefully consider installation when determining buffer tank
location. Please read the entire manual before attempting
installation. Failure to properly take factors such as venting, piping,
condensate removal, and wiring into account before installation
could result in wasted time, money, and possible property damage
and personal injury.
A. Technical Specifications
C
D
A
B
45°
45°
LP-219-A
08/30/21
MODEL GAL. CAP.
A
B
C
D
INLET/OUTLET
SSU-20B
20
5"
21-1/4" 27" 19-1/4"
1-1/2"
TOP VIEW
Figure 1 - Buffer Tank Dimensions
B. Sizing the Buffer Tank
In order to properly size the buffer tank to the system, determine:
•
The minimum boiler firing rate
•
Smallest zone in BTU’s
•
Run time in minutes
•
Temperature drop
After these factors have been determined, plug the numbers into
the following equation:
(Minimum Boiler Firing Rate – Smallest Zone in BTU’s) X Run Time in Minutes
Temperature Drop X 8.33 X 60
For example:
(28,000 – 9,600) = 18,400 X 10 Minutes = 184,000
(180 degrees – 160 degrees) X 500 = 10,000
Buffer Tank Size = 18.4 Gallons
C. Locating the Buffer Tank
This buffer tank is certified for indoor use only. DO NOT INSTALL
OUTDOORS. Outdoor installations ARE NOT covered by warranty.
All buffer tanks eventually leak. Locate the buffer tank where any
leakage from the relief valve, related piping, tank, or connections
will not result in damage to surrounding areas or lower floors of the
building. Any buffer tank should be installed in such a manner that
if it should leak the resulting flow of water will not cause damage
to the area in which it is installed. If the buffer tank is installed in a
location where a leak could cause damage, it is required to provide
containment measures. Such measures include but are not limited
to: a properly sized drain pan installed beneath the buffer tank and
piped to an open drain line, or installing the buffer tank on a concrete
floor pitched to a free flowing drain. Failure to provide containment
measures is the sole responsibility of the owner and/or installer.
Leakage damages ARE NOT covered by warranty.
In addition, water leak detection devices and automatic water
shutoff valves are readily available at plumbing supply houses. IT IS
HIGHLY RECOMMENDED BY THE MANUFACTURER TO INSTALL WATER
LEAK DETECTION DEVICES AND AUTOMATIC SHUTOFF VALVES IN
ANY INSTALLATION WHERE A LEAKAGE OF WATER COULD RESULT IN
PROPERTY DAMAGES.
The service life of the buffer tank’s exposed metallic surfaces
are directly influenced by proximity to damp and salty marine
environments. In such areas higher concentration levels of
chlorides from sea spray coupled with relative humidity can lead to
degradation of tank components. Take local installation conditions
into consideration before installing to prevent premature system
failure.
Ensure that the installation location adheres to the information
included in this manual. Failure to do so could result in property
damage, serious personal injury, or death. Failure of the tank or
components due to incorrect operating conditions IS NOT covered
by product warranty.
1. Installation Area (Mechanical Room) Operating Conditions
• Ensure ambient temperatures are higher than 32
o
F / 0
o
C and
lower than 104
o
F / 40
o
C
• Avoid continuously high levels of humidity
NOTE:
When installing in a zero clearance location, it may not be
possible to read or view some product labeling. It is recommended to
make note of the buffer tank model and serial number.
NOTE:
A combustible door or removable panel is acceptable front
clearance.
NOTE:
If you do not provide the minimum recommended service
clearances shown in Figure 2 it might not be possible to service the
buffer tank without removing it from the space.
MINIMUM CLEARANCES FROM COMBUSTIBLE MATERIALS
•
Hot water pipes - at least 1” from combustible materials
This buffer tank must be installed upright in the vertical position as
described in this manual. DO NOT attempt to install this tank in any
other orientation. Doing so will result in improper tank operation
and property damage, and could result in serious personal injury or
death.
Always take future maintenance into consideration when locating
the buffer tank. If the buffer tank is located in an installation
location with limited clearances, it may be necessary to remove the
tank from the space to perform maintenance. Failure to consider
maintenance when determining installation location could result
in property damage.
