Noritz SS-HB-1 Installation Manual

ScaleShield / SS-HB-1 & SS-HB-2
Installation / Operating Instructions

4 ”

Inlet/Outet
Female
3/4”NPT

Unit Description

Noritz’s ScaleShield Water Conditioning System is a unique product providing superior limescale
prevention and corrosion control. The Scale Shield conditions water at a constant rate resulting
in consistent scale prevention and corrosion control for predictable periods of time. ScaleShield
works by:

12 ”

Transparent
Cartridge
Housing

• Keeps scale-causing minerals in solution inhibiting limescale formation.

•

•

•

HydroBlend
Cartridge

In many cases, the ScaleShield Water Conditioning Systems offer many of the same advantages
as conventional water softening systems, except at a lower cost with little professional
maintenance. When it comes to protecting your Noritz tankless water heater, no other product
offers the level of protection from limescale and corrosion than ScaleShield.

Selection Guide

Unit

NR66 & NR71 Series

NR83 & NR98 Series

NR111, NRC111,
NCC199, & NC250 Series

NC380 Series

Whole House / Commercial

Changes the shape of precipitated limescale preventing accumulation.
Coats wetted surfaces with a micro-thin layer that acts a shield.
Helps soften and remove existing limescale over time.

Model

SS-HB-1

SS-HB-2

Description

Installation on cold-water line feeding tankless water heater only.

Installation on cold-water line feeding tankless water heater only.

2 units required on cold-water line feeding tankless heater only.

Contact Noritz

Refer to the above selection guide to ensure the correct application od ScaleShiel unit(s).

Specifications:

Models

Max. Pressure

Max. Temperature

Connection Size

Accessories

Cartridge

SS-HB-1 SS-HB-2

125psi

100°F

3/4” Female NPT

3 Way Bypass Valve

HBC-1

125psi

100°F

3/4” Female NPT

3 Way Bypass Valve

HBC-2

Important Note: Do not install

the ScaleShield unit where it is
exposed to direct sunlight. If
installed outdoors, ensure the
system is covered or insulated
from exposure to direct sunlight
and/or to protect it from freezing.

Prior to Installing System:

1. The ScaleShield water conditioning system must be installed on a cold-water line prior to the tankless water heater.
The unit will treat either the hot side only, or the whole house. Refer to the selection chart on the opposite page to
ensure the correct cartridge is being used.

2. Determine the flow direction of the incoming water line. The unit is shipped with mounting bracket attached with the
inlet port on the left side. If needed, remove and reverse the mounting bracket for right side inlet port configuration.

3. It is recommended that a 3-way by-pass be used on all installations in order to isolate the system for maintenance.
The use of unions is also recommended. Refer to bypass diagrams below.

4. Observe water pressure. If pressure exceeds 125 psi, use a pressure regulator prior to the system.

5. Securely mount the system using supplied bracket whenever possible.

6. The system must be installed with the cartridge and sump directly below the feed head.

7. Install the system where the housing is in an accessible location for cartridge change. Allow a 2” space under the
cartridge housing in order to unscrew it from the head.

Connection and Start- Up:

1. Turn off water supply.

2. Use either Teflon tape and/or pipe dope on 3/4” male threaded fittings prior to connecting them to the female
threaded ports on the system head. Do not over tighten the fittings into the ports.

3. Do not sweat fittings close to the system head unless precautions are taken against excessive heat.

(Continued on other side)

(Continued from other side)

Connection and Start- Up:

5. If the housing and cartridge were removed during installation, take the filter cartridge and push it up onto the 3/4”
stem in the bottom of the head so that it hangs by itself vertically under the head. With care not to bump the
cartridge, replace the filter housing on the head by screwing it on. Make sure o-ring is seated correctly in housing,
and hand tighten until snug*, ensuring the bottom of the cartridge is centered..

6. Once installation is complete, turn on water supply and allow water to enter into the unit. Purge air from the unit
by opening water lines, then close lines and check for leaks.

7. Make sure the bypass valve is in closed position.

* Hand tighten housing only. Use Filter Wrench for housing removal only.

Bypass Configurations

Bypass Valve

Union

Operation:

Under normal operation, the inlet and outlet valves should be in the open position and the bypass valve closed.
The product will dissolve over time and the level of the cartridge will drop. Replace the cartridge when the product level
nears the bottom of the cartridge. Cartridge life will vary depending on water usage and cartridge type. Cartridges should
last 6-12 months on most residential applications.

Cartridge Replacement:

IN

OUT

1. Close inlet valve only. Open water line downstream of system to relieve
pressure from the line. Once pressure is released, close the outlet valve,
then using the filter wrench, unscrew the housing and remove.

2. Remove the spent cartridge ensuring that the top o-band does not

TOP
O-BAND

remain on the stem in the middle of the head.

3. Take the replacement filter cartridge and push it up onto the 3/4” stem in
the bottom of the head so that it hangs by itself vertically under the head.
With care not to bump the cartridge, replace the filter housing on the head

FEED
HOLES

by screwing it on. Make sure o-ring is seated correctly in housing, and hand
tighten until snug, ensuring that the bottom of the cartridge is centered.

4. Open outlet valve, then slowly open inlet valve. Purge are from system by
opening line downstream of unit, then check the unit for leaks. Ensure
bypass is closed. If system leaks, replace o-ring and recheck.

Trouble Shooting:

There are two maintenance requirements for correct system operation. 1) Replace the cartridge when needed.

2) Ensure that the feed holes on the cartridge are not plugged. In some applications where water hardness and

alkalinity are high, feed holes may begin to “weep” a white material from the feed holes. This material may eventually build
up and clog the feed holes rendering the system ineffective. There may also be evidence of a harmless white powder-like
substance at the bottom of the housing. In such applications, the feed holes on the cartridge will need to be periodically
cleaned. Follow cartridge replacement procedures and clean the feed holes taking care not to tip the cartridge to

one side.

ScaleShield unit includes:

(1) Cartridge Housing (inlet/Outlet Head and Transparent Housing w/ O-ring)
(1) ScaleShield Water Conditioning Cartridge (HBC-1 or HBC-2)
(1) Mounting Bracket w/ 4 Screws
(1) Filter Housing Wrench
(1) Installation/Operating Instructions

For Further Information:

Noritz America™ Corporation

11160 Grace Avenue

Fountain Valley, CA 92708

866-766-7489

www.noritzamerica.com