HTP SSU-20CB, SSU-30CB, SSU-45CB, SSU-60CB, SSU-80CB Installation Manual
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Installation
Start-Up
Maintenance
Parts
Superstor Ultra
Stainless Steel Storage Tanks
Warranty
For Residential and Commercial Use
SSU CB Models
This manual must only be used by a qualied installer / service technician. Read all instructions in this manual before installing.
Perform steps in the given order. Failure to do so could result in substantial 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 manufacturer reserves the right to make product changes or updates without notice and will not be held liable for
typographical errors in literature.
The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by weight as required
by the Safe Drinking Water Act, Section 1417.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
272 Duchaine Blvd New Bedford, MA 02745 www.htproducts.com
lp-32 Rev. 003 Rel. 010 Date 2.22.19
2
The following dened terms are used throughout this manual to
bring attention to the presence of hazards of various risk levels or to
important product information.
DANGER indicates an imminently hazardous situation which, if not
avoided, will result in serious personal injury or death.
WARNING indicates a potentially hazardous situation which, if not
avoided, could result in personal injury or death.
D. Temperature and Pressure Relief Valve 6
E. Potable Expansion Tank 6
F. Scalding 6
G. Applications 7
Part 4 - Control and Wiring 7
A. Control 7
B. Wiring 7
C. Wiring Diagram 7
Part 5 - Start-Up and Operation 7
Part 6 - Maintenance and Troubleshooting 8
Ten (10) Year Limited Warranty 10
Customer Installation Record Form 12
CAUTION indicates a potentially hazardous situation which, if not
avoided, may result in moderate or minor personal injury.
CAUTION used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, may result in
property damage.
NOTICE is used to address practices not related to personal injury.
Foreword
This manual is intended to be used in conjunction with other literature
provided with the storage tank. This includes all related control
information. It is important that this manual, all other documents
included with this system, and additional publications be reviewed in
their entirety before beginning any work.
Installation should be made in accordance with the regulations of
the Authority Having Jurisdiction, local code authorities, and utility
companies which pertain to this type of water heating equipment.
Authority Having Jurisdiction (AHJ) – The AHJ may be a federal, state,
local government, or individual such as a re chief, re marshal, chief
of a re prevention bureau, labor department or health department,
building ocial or electrical inspector, or others having statutory
authority. In some circumstances, the property owner or his/her agent
assumes the role, and at government installations, the commanding
ocer or departmental ocial may be the AHJ.
NOTE: HTP reserves the right to modify product technical specications
and components without prior notice.
For the Installer
This storage tank must be installed by qualied and licensed personnel.
The installer should be guided by the instructions furnished with the
storage tank, and by local codes and utility company requirements.
Installations Must Comply With:
Local, state, provincial, and national codes, laws, regulations, and
ordinances.
Table of Contents
Part 1 - General Safety Information 2
A. When Servicing the Water Heating System 3
B. System Water 3
C. Freeze Protection 3
D. Water Temperature Adjustment 3
Part 2 - Prepare the Storage Tank 3
A. Locating the Storage Tank 3
B. Water Chemistry Requirements 4
Part 3 - Piping 4
A. Plumbing 4
B. Tankless Coil Connections 4
C. Hot Water Outlet 5
From the Uniform Plumbing Code 2000 - Section 510 -
Protection From Damage
1. All storage tanks installed in areas where they may be subjected
to mechanical damage shall be suitably guarded against such
damage by being installed behind adequate barriers or by being
elevated or located out of the normal path of a vehicle using any
such garage.
2. In seismic zones 3 and 4, storage tanks shall be anchored or
strapped to resist horizontal displacement due to earthquake
motion. Strapping shall be at points within the upper one-third
(1/3) and lower one-third (1/3) of its vertical dimensions. At the
lower point, a minimum distance of four (4) inches (102 mm) shall
be maintained above the controls with the strapping.
3. A storage tank supported from the ground shall rest on level
concrete or other approved base extending not less than three (3)
inches (76 mm) above the adjoining ground level.
4. When a storage tank is located in an attic, attic-ceiling assembly,
oor-ceiling assembly, or oor-suboor assembly where damage
may result from a leaking storage tank, a watertight pan of
corrosion resistant materials shall be installed beneath the storage
tank with a minimum three-quarter (3/4) inch (20 mm) diameter
drain to an approved location.
Part 1 - General Safety Information
This storage tank is approved for indoor installations only and is
not intended for use in swimming pool applications. Clearance
to combustible materials: 0” top, bottom, sides, and back. Tank
must have room for service: 24” front and 6” sides are minimum
recommended service clearances. (A combustible door or removable
panel is acceptable front clearance.) This storage tank has been
approved for closet installation and installation on combustible
ooring. Install the storage tank in a location where temperature
and pressure relief valve discharge or a leak will not result in damage
to the surrounding area.
Installer - Read all instructions in this manual before installing.
Perform steps in the given order.
User - This manual is for use only by a qualied heating installer
/ service technician. Have this storage tank serviced / inspected
annually by a qualied service technician.
NOTE: Obey all local codes. Obtain all applicable permits before
installing the storage tank.
NOTE: Install all system components and piping in such a manner
that does not reduce the performance of any re rated assembly.
lp-32 Rev. 003 Rel. 010 Date 2.22.19
NOTE: If the storage tank is exposed to the following, do not
operate. Immediately call a qualied service technician.
1. Fire
2. Damage
3. Water
Failure to adhere to these guidelines can result in substantial
property damage, severe personal injury, or death.
3
A. Locating the Storage Tank
This storage tank is certied for indoor use only. DO NOT INSTALL
OUTDOORS. Outdoor installations ARE NOT covered by warranty.
Choose a location for the storage tank as centralized to the piping
system as possible. Also, locate the storage tank and domestic water
piping where it will not be exposed to freezing temperatures. All
piping should be insulated. Additionally, place the storage tank so that
the drain, controls, and inlets/outlets are easily accessible.
High heat sources (sources generating heat 100oF / 37oC or
greater, such as stove pipes, space heaters, etc.) may damage
plastic components of the storage 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 storage tank and related
components near high heat sources.
Do not use this storage tank for anything other than its intended
purpose (as described in this manual). Doing so could result in
property damage and WILL VOID product warranty.
UNCRATING THE STORAGE TANK - Any claims for damage or
shortage in shipment must be led immediately against the
transportation company by the consignee.
A. When Servicing the Water Heating System
To avoid electric shock, disconnect electrical supply before
performing maintenance.
To avoid severe burns, allow storage tank and associated equipment
to cool before servicing.
B. System Water
Do not use petroleum-based cleaning or sealing compounds in
a water heating system. Gaskets and seals in the system may be
damaged. This can result in substantial property damage.
Do not use “homemade cures” or “patent medicines”. Damage to the
storage tank, substantial property damage, and/or serious personal
injury may result.
C. Freeze Protection
NOTE: Consider piping and installation when determining tank
location. Place the storage tank as close to the boiler as possible in a
location not prone to freezing.
Failure of the storage tank due to freeze related damage IS NOT
covered by product warranty.
D. Water Temperature Adjustment
If the storage tank is going to have a set temperature above 120oF,
you must use an ASSE 1017 rated mixing valve to avoid severe burns
or death from scalding temperatures.
Households with small children, disabled, or elderly persons may
require a 120oF or lower temperature setting to prevent severe
personal injury or death due to scalding.
Part 2 - Prepare the Storage Tank
Remove all sides of the shipping crate to allow the tank to be moved
into its installation location.
This storage tank must be installed upright in the vertical position as
described in this manual. DO NOT attempt to install this storage tank
in any other orientation. Doing so will result in improper storage
tank operation and property damage, and could result in serious
personal injury or death.
Ensure the location can support the entire lled weight of the
storage tank. Failure to properly support the storage tank could
result in property damage, severe personal injury, or death.
COLD WEATHER HANDLING - If the storage tank has been stored
in a very cold location (BELOW 0oF) before installation, handle with
care until the components come to room temperature. Failure to do
so could result in damage to the storage tank.
All water heaters eventually leak. Locate the water heater where any
leakage from the relief valve, related piping, tank, or connections
will not result in damage to surrounding areas or lower oors of the
building. Any water heater should be installed in such a manner that
if it should leak the resulting ow of water will not cause damage
to the area in which it is installed. National Plumbing codes require
a drain pan for any water heater installation. This drain pan should
be sized with a maximum depth of 2”, and a minimum diameter
2” greater than the diameter of the water heater. The drain pan
should empty into an open drain line. This drain line should be
3/4” ID minimum, piped to an open drain. Leakage damages ARE
NOT covered by warranty. Failure to install a drain pan is the sole
responsibility of the owner and/or installer. Reference UPC 2000
(Uniform Plumbing Code) Section 510 - Protection from Damage or
IPC 200 (International Plumbing code) Section 504 - Safety Devices.
Leakage damages ARE NOT covered by warranty.
In addition, water leak detection devices and automatic water shuto
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
WATER HEATER INSTALLATION WHERE A LEAKAGE OF WATER COULD
RESULT IN PROPERTY DAMAGES.
NOTE: To save on heating costs and improve energy eciency keep
the distance between the boiler and storage tank to a minimum
to reduce heat loss from excess piping and keep friction loss at a
minimum. Ensure all piping between the boiler and storage tank is
properly insulated to minimize heat loss.
The storage tank may be located some distance from the boiler
provided the circulator meets ow requirements. The greater the
distance from the boiler to the storage tank the longer the response
will be to a call for hot water.
This storage tank must be installed vertical on a level surface.
NOTE: In the State of California, the storage tank must be braced,
anchored, or strapped to avoid moving during an earthquake. Contact
local utilities for code requirements in your area. Visit http://www.dsa.
dgs.ca.gov or call 1-916-445-8100 and request instructions.
However, applicable local codes shall govern installation. For residential
storage tanks of a capacity of greater than 52 gallons, consult the local
building jurisdiction for acceptable bracing procedures.
NOTE: If you do not provide the minimum clearances shown in
Figure 1, it might not be possible to service the storage tank without
lp-32 Rev. 003 Rel. 010 Date 2.22.19
4
removing it from the space.
NOTE: A combustible door or removable panel is acceptable front
clearance.
This storage tank must not be located near ammable liquids such
as gasoline, butane, liqueed propane, adhesives, solvents, paint
thinners, etc., as the controls of this storage tank could ignite these
vapors and cause an explosion resulting in property damage, severe
personal injury, or death.
• If the pH is not between 6.5 and 8.5, consult a local water
treatment company for solutions.
Hardness less than 12 grains (200 mg/L)
• Hardness levels above the required amounts can lead to
lime scale build-up throughout the system. Water below 5
grains/gallon (85 mg/L) may be over softened.
• Consult local water treatment companies for unusually
hard water areas (above the required amounts) or for other
treatment solutions if water is being over softened (below 5
grains/gallon [85 mg/L]).
Chloride concentration less than 100 ppm (mg/L)
• Do not ll storage tank or operate with water containing
chlorides in excess of 100 ppm (mg/L).
• Using chlorinated fresh water should be acceptable as levels
are typically less than 5 ppm (mg/L).
• Do not connect the storage tank to directly heat swimming
pool or spa water.
Total Dissolved Solids (TDS) less than 500 ppm (mg/L)
• Total dissolved solids are minerals, salts, metals, and charged
particles that are dissolved in water.
• The greater the amounts of TDS present, the higher the
corrosion potential due to increased conductivity in the
water.
• If using softened water to ll the storage tank, it is still possible
to have high TDS. This water can be corrosive. Consult local
water treatment companies for other treatment solutions to
reduce this aect.
*NOTE: To promote storage tank service life, it is strongly
recommended to follow the maintenance procedures in this manual.
Figure 1 - Recommended Service Clearances
B. Water Chemistry Requirements
Chemical imbalance of the water supply may aect eciency and
cause severe damage to the storage tank and associated equipment.
Water quality must be professionally analyzed to determine whether
it is necessary to treat the water. Various solutions are available to
adjust water quality. Adverse water quality will aect the reliability
of the system. In addition, operating temperatures above 135oF
will accelerate the build-up of lime scale and possibly shorten tank
service life. Failure of a storage tank due to lime scale build-up, low
pH, or other chemical imbalance IS NOT covered by the warranty.
The water must be potable, free of corrosive chemicals, sand, dirt,
and other contaminates. It is up to the installer to ensure the water
does not contain corrosive chemicals or elements that can damage
the heat exchanger. Potable water is dened as drinkable water
supplied from utility or well water in compliance with EPA secondary
maximum contaminant levels (40 CFR Part 143.3). If the water contains
contaminants higher than outlined by the EPA, water treatment is
recommended and additional, more frequent maintenance may be
required.
If you suspect that your water is contaminated in any way, discontinue
use of the storage tank and contact an authorized technician or
licensed professional.
Water pH between 6.5 and 8.5
• pH levels below 6.5 can cause an increase in the rate of
corrosion. pH of 8.5 or higher can potentially cause lime scale
build-up
• Maintain water pH between 6.5 and 8.5. Check with litmus
paper or have it chemically analyzed by a local water treatment
company.
Part 3 - Piping
A. Plumbing
It is mandatory that all plumbing be done in accordance with
federal, local, and state plumbing codes and practices. Failure to
properly install the storage tank WILL VOID the warranty. It is also
necessary to use both thread tape and pipe dope on all mechanical
plumbing connections.
When lling the storage tank, open a hot water tap to release air
in the tank and piping. Failure to do so could lead to improper
operation and damage to components.
The use of heat, such as blow torches, near the tank may cause
distortion to the high density polyethylene wrapper. Such damage
is NOT covered by warranty. Exercise caution whenever using heat
sources near tank.
Never use dielectric ttings or galvanized steel ttings on any
domestic water connections. Use only copper or brass ttings.
Failure to do so will result in premature storage tank failure. Such
failure IS NOT covered by warranty.
B. Tankless Coil Connections
Use a 3/4” nominal minimum pipe size. On the tank, the tankless inlet
is to be connected to a bronze or stainless steel circulator with the
arrow pointing away from the tank and toward the tankless coil. This
pipe will also have a tee for the cold supply to the tankless coil. (An
optional check valve may be installed between the cold supply line
and circulator to prevent short circulating the tankless coil. This may
cause poor supply pressure, or noisy operation depending upon the
type of installation.)
On the tank, tankless outlet, use both thread tape and pipe dope
and connect a 3/4” (minimum) tube adapter and connect this to the
hot tankless coil outlet on the boiler.
NOTE: See “Typical Installation”, Figure 3.
lp-32 Rev. 003 Rel. 010 Date 2.22.19
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