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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.

Summary of Contents for SuperStor Ultra SSU-20B

Page 1: ...ce could void product warranty and cause property damage severe personal injury or death California Proposition 65 Warning This product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important product in...

Page 2: ...d heating installer service technician Have this buffer tank serviced inspected annually by a qualified service technician FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE SEVERE PERSONAL INJURY OR DEATH NOTE Obey all local codes Obtain all applicable permits before installing the buffer tank NOTE Install all system components and piping in such a manner t...

Page 3: ...uffer 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 responsibil...

Page 4: ... Use two wrenches when tightening water piping at tank Use one wrench to prevent the tank inlet or outlet line from turning Failure to prevent piping connections from turning could cause damage to the tank It is mandatory that all plumbing be done in accordance with federal local and state plumbing codes and practices Failure to properly install the buffer tank WILL VOID the warranty It is also ne...

Page 5: ...ystem piping concept only Installer is responsible for all equipment and detailing required by local codes Figure 5 Buffer Tank in Space Heating Application with Pumps and Indirect Water Heater Part 4 Maintenance The buffer tank must be inspected and serviced annually preferably at the start of the heating season by a qualified service technician Failure to maintain the buffer tank or system compo...

Page 6: ...tank purchased from an unauthorized dealer 2 Any buffer tank not installed by a qualified heating installer service technician or installations that do not conform to ANSI CSA and or UL standards as well as any applicable national or local building codes 3 Service trips to teach the Owner how to install use maintain or to bring the buffer tank installation into compliance with local building codes...

Page 7: ...arges for labor or other expenses incurred in the removal repair or replacement of the buffer tank or any component part s claimed to be defective or any expense incurred to remedy any defect in the product Such charges include but are not necessarily limited to 1 All freight shipping handling and delivery costs of forwarding a new buffer tank or replacement part s to the owner 2 All costs necessa...

Page 8: ...me Date of Installation Installation Address Product Name Serial Number s Comments Installer s Code Name Installers Phone Number Signed by Installer Signed by Customer Installation Notes IMPORTANT Customer Please only sign after the installer has fully reviewed the installation safety proper operation and maintenance of the system If the system has any problems please call the installer If you are...

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