Rheem RHW42 Platinum Preferred WiFi Water Softener Installation Guide

Installation Guide for Rheem models including: RHW42, Platinum Preferred WiFi Water Softener

In sta lla tio n a n d O p e ra tio n M a n u a l

found on the rating decal inside the salt lid. Page 2. 2. TABLE OF CONTENTS. Page. Specifications & Performance Claims .

Preferred Platinum 42,000 Grain Water Softener with WiFi Technology Instructions / Assembly

Rheem RHW42 090259922345 0090259922345 1005707345

Preferred Platinum 42,000 Grain Water Softener with WiFi Technology Use and Care Manual

File Info : application/pdf, 32 Pages, 2.93MB

f88abd5d-4a26-4c13-8a1f-7b0c4551db33

Model RHW42
How to install, operate and maintain your Demand Controlled Water Softener
PRODUCT AND WARRANTY REGISTRATION
Register your product online to validate and extend your warranty. See warranty page for details. www.rheemwatertreatment.com
If you have any questions or concerns when installing, operating or maintaining your water
softener, call our toll free number:
1-800-754-7027
or visit www.rheemwatertreatment.com When you call, please be prepared to provide the model and serial number of your product,
found on the rating decal inside the salt lid.
System tested and certified by NSF International against NSF/ANSI Standard 44
for hardness reduction, efficiency and the reduction of barium and radium 226/228, and certified to NSF/ANSI Standard 372.
Manufactured and warranted by Water Channel Partners 1890 Woodlane Drive Woodbury, MN 55125

7386481 (Rev. A 11/10/20)

Installation and Operation Manual

TABLE OF CONTENTS
Page Specifications & Performance Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Inspect Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Water Conditioning Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7 Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12 Programming the Water Softener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-15 Connecting the System to Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-17 Controller Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-19 Bypass Blending Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-22 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-25 Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Optional Motorized Water Shutoff Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-31 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Dimensions
20-1/2""

IINN 3-3/4""
OUT

TOP VIEWW

1155-1/4""

IINN - OOUUTT

48"" 4411--33//44""

SSIDE VVIIEEWW 2

FFRRONT VVIIEEWW

FIG. 1

Specifications & Performance Claims
This model is efficiency rated. The efficiency rating is valid only at the minimum salt dose. This system has a demand initiated regeneration (D.I.R.) feature that complies with specific performance specifications intended to minimize the amount of regenerant brine and water used in their operation.
This water softener has a rated softener efficiency of not less than 3,350 grains of total hardness exchange per pound of salt (based on sodium chloride) and shall not deliver more salt than its listed rating or be operated at a sustained maximum service flow rate greater than its listed rating. This system has been proven to deliver soft water for at least ten continuous minutes at the rated service flow rate. The rated salt efficiency is measured by laboratory tests described in NSF/ANSI Standard 44. These tests represent the maximum possible efficiency that the system can achieve. Operational efficiency is the actual efficiency after the system has been installed. It is typically less than the rated efficiency, due to individual application factors including water hardness, water usage, and other contaminants that reduce a softener's capacity.

Model Code
Rated Softening Capacity (Grains @ Salt Dose)
Rated Efficiency (Grains/Pound of Salt @ Minimum Salt Dose) Water Used During Regeneration @ Minimum Salt Dose Total Water Used Per Regeneration @ Maximum Salt Dose Rated Service Flow Rate Amount of High Capacity Ion Exchange Resin Pressure Drop at Rated Service Flow Intermittent Flow Rate @ 30 psi* Water Supply Max. Hardness Water Supply Max. Clear Water Iron Water Pressure Limits (min. / max.) Water and Ambient Temperature Limits (min. / max.) Minimum Water Supply Flow Rate Maximum Drain Flow Rate

Model RHW42 rH42
12,400 @ 2.5 lbs. 29,900 @ 8.0 lbs. 42,400 @ 16.3 lbs. 5,010 @ 2.5 lbs. 2.5 gallons / 1,000 grains
45.9 gallons 9.9 gpm
1.20 cu. ft. 12.0 psig 22.4 gpm 140 gpg 11 ppm** 20 - 125 PSI 40 - 120 °F
3 gpm 2.0 gpm

*Intermittent flow rate does not represent the maximum service flow rate used for determining
the softener's rated capacity and efficiency. Continuous operation at flow rates greater than the service flow rate may affect capacity and efficiency performance.
**Capacity to reduce clear water iron is substantiated by laboratory test data. State of Wisconsin
requires additional treatment if water supply contains clear water iron exceeding 5 ppm.
This system conforms to NSF/ANSI Standard 44 for the specific performance claims as verified and substantiated by test data.
Variable Salt Dose: The salt dose is selected by the electronic controls at regeneration time based on the amount needed.

Questions? Call Toll Free 1-800-754-7027 or visit www.rheemwatertreatment.com
When you call, please be prepared to provide the model and serial number, found on the rating decal inside the salt lid.
3

Before You Start
= The water softener requires a minimum water flow of 3 gallons per minute at the inlet. Maximum allowable inlet water pressure is 125 psi. If daytime pressure is over 80 psi, nighttime pressure may exceed the maximum. Use a pressure reducing valve if necessary (Adding a pressure reducing valve may reduce the flow). If your home is equipped with a back flow preventer, an expansion tank must be installed in accordance with local codes and laws.
= The water softener works on 24V DC electrical power, supplied by a direct plug-in power supply (included). Be sure to use the included power supply and plug it into a nominal 120V, 60 Hz household outlet that is in a dry location only, grounded and properly protected by an overcurrent device such as a circuit breaker or fuse.
= Do not use this system to treat water that is microbiologically unsafe or of unknown quality without adequate disinfection upstream or downstream of the system. European Directive 2002/96/EC requires all electrical and electronic equipment to be disposed of according to Waste Electrical and Electronic Equipment (WEEE) requirements. This directive or similar laws are in place nationally and can vary from region to region. Please refer to your state and local laws for proper disposal of this equipment.
In the state of Massachusetts: The Commonwealth of Massachusetts plumbing code 248-CMR shall be adhered to. A licensed plumber shall be used for this installation.
In the state of California: You must turn the Salt Efficiency Feature setting to ON. This may initiate more frequent recharges. However, it will operate at 4,000 grains per pound of salt or higher. To turn on the Salt Efficiency Feature, follow the instructions in the "Salt Efficiency" section of this manual.
Do not return the water softener to store.
If you have any questions, or there are missing parts or damage, please call Toll Free 1-800-754-7027 or visit www.rheemwatertreatment.com When you call, please be prepared to provide the model and serial number, found on the rating decal inside the salt lid.

FCC NOTICE
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the

equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
= Reorient or relocate the receiving antenna. = Increase the separation between the equipment
and receiver. = Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected. = Consult the dealer or an experienced radio/TV
technician for help.
IMPORTANT: Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Inspect Shipment

The parts required to assemble and install the water softener are included with the unit. Thoroughly check the water softener for possible shipping damage and parts loss. Also inspect and note any damage to the shipping carton.

Remove and discard (or recycle) all packing materials. To avoid loss of small parts, we suggest you keep the small parts in the parts bag until you are ready to use them.

Packing List

Bypass Valve

Drain Hose

O-rings

Installation Adaptors

Clips (2 are shipped installed on the softener's valve)

Hose Clamps

Adaptor Elbow

Grommet

FIG. 2

Water Conditioning Information

IRON
Iron in water can cause stains on clothing and plumbing fixtures. It can negatively affect the taste of food, drinking water, and other beverages. Iron in water is measured in parts per million (ppm). The total* ppm of iron, and type or types*, is determined by chemical analysis. Four different types of iron in water are:
= Ferrous (clear water) iron = Ferric (red water) iron = Bacterial and organically bound iron = Colloidal and inorganically bound iron (ferrous or
ferric)
Ferrous (clear water) iron is soluble and dissolves in water. This water softener will reduce moderate amounts of this type of iron (see specifications).** Ferrous (clear water) iron is usually detected by taking a sample of water in a clear bottle or glass. Immediately after taking, the sample is clear. As the water sample stands, it gradually clouds and turns slightly yellow or brown as air oxidizes the iron. This usually occurs in 15 to 30 minutes.
When using the softener to reduce Ferrous (clear water) iron, add 5 grains to the hardness setting for every 1 ppm of Ferrous (clear water) iron. See "Set Water Hardness Number" section.
Ferric (red water), and bacterial and organically bound irons are insoluble. This water softener will not remove ferric or bacterial iron. This iron is visible

immediately when drawn from a faucet because it has oxidized before reaching the home. It appears as small cloudy yellow, orange, or reddish suspended particles. After the water stands for a period of time, the particles settle to the bottom of the container. Generally these irons are removed from water by filtration. Chlorination is also recommended for bacterial iron.
Colloidal and inorganically bound iron is of ferric or ferrous form that will not filter or exchange out of water. This water softener will not remove colloidal iron. In some instances, treatment may improve colloidal iron water. Colloidal iron water usually has a yellow appearance when drawn. After standing for several hours, the color persists and the iron does not settle, but remains suspended in the water.
SEDIMENT
Sediment is fine, foreign material particles suspended in water. This water softener will not remove sediment. This material is most often clay or silt. Extreme amounts of sediment may give the water a cloudy appearance. A sediment filter installed upstream of the water softener normally corrects this situation.
* Water may contain one or more of the four types of iron and any combination of these. Total iron is the sum of the contents.
** Capacity to reduce clear water iron is substantiated by laboratory test data.

Installation Requirements

LOCATION REQUIREMENTS
Consider all of the following when selecting an installation location for the water softener.
= Do not locate the water softener where freezing temperatures occur. Do not attempt to treat water over 120ºF. Freezing temperatures or hot water damage voids the warranty.
= To condition all water in the home, install the water softener close to the water supply inlet, and upstream of all other plumbing connections, except outside water pipes. Outside faucets should remain on hard water to avoid wasting conditioned water and salt.
= A nearby drain is needed to carry away regeneration discharge (drain) water. Use a floor drain, laundry tub, sump, standpipe, or other options (check your local codes). See "Air Gap Requirements" and "Valve Drain Requirements" sections.
= The water softener works on 24V DC electrical power, supplied by a direct plug-in power supply (included). Provide nearby a 120V, 60Hz electrical outlet in accordance with NEC and local codes.
= Always install the water softener between the water inlet and water heater. Any other installed water conditioning equipment should be installed between the water inlet and water softener (See Figure 4 below).
= Avoid installing in direct sunlight. Excessive sun heat may cause distortion or other damage to nonmetallic parts.
= Install on a flat, stable surface that evenly supports the weight of the water softener.

PLUMBING CODES
All plumbing must be completed in accordance with national, state and local plumbing codes.
In the state of Massachusetts: The Commonwealth of Massachusetts plumbing code 248-CMR shall be adhered to. A licensed plumber shall be used for this installation.

AIR GAP REQUIREMENTS
A drain is needed for the water discharged from the valve during the softener's regeneration cycle (See Figure 3). A floor drain, close to the water softener, is preferred. Alaundry tub, standpipe, etc. are other drain options. Secure valve drain hose in place. Leave an air gap of 1-1/2" between the end of the hose and the drain. This gap is needed to prevent backflow of sewer water into the water softener. Do not put the end of the drain hose into the drain.

1-1/2" air gap

Drain Hose

1-1/2" air gap

FLOOR DRAIN

STANDPIPE

LAUNDRY TUB
FIG. 3

THE PROPER ORDER TO INSTALL WATER TREATMENT EQUIPMENT

Cold Water to House

Untreated Water to Outside Faucets

City Water Supply

Hot Water to House

Optional Sediment
Filter

Pressure Tank

Water Heater

Water Softener

Well Water Supply
Well Pump

FIG. 4

Installation Requirements

VALVE DRAIN REQUIREMENTS
Using the flexible drain hose (included), measure and cut to the length needed. Flexible drain hose is not allowed in all localities (check your plumbing codes). If local codes do not allow use of a flexible drain hose, a rigid valve drain run must be used. Purchase a compression fitting (1/4 NPT x 1/2 in. minimum tube) and 1/2" tubing from your local hardware store. Plumb a rigid drain as needed (See Figure 6).
NOTE: Avoid drain hose runs longer than 30 feet. Avoid elevating the hose more than 8 feet above the floor. Make the valve drain line as short and direct as possible.

1/4" NPT Thread Barbs for 3/8"
I.D. Tubing
Hose Clamp
Drain Hose
FIG. 5

Clip

1/4 NPT Threads

Compression Fitting. 1/4 NPT x 1/2" O.D.

Barbs

Tube (not included)

INLET / OUTLET PLUMBING OPTIONS
Always install either a single bypass valve (provided), as shown in Figure 7, or, if desired, parts for a 3 valve bypass system (not included) can be purchased and assembled, as shown in Figure 8. Bypass valves allow you to turn off water to the softener for maintenance if needed, but still have water in house pipes.
Use:
= Copper pipe = Threaded pipe = PEX (Crosslinked Polyethylene) pipe = CPVC plastic pipe = Other pipe approved for use with potable water
IMPORTANT: Do not solder with plumbing attached to installation adaptors and single bypass valve. Soldering heat will damage the adaptors and valve.

Cut barbs from drain fitting (pull clip to remove
fitting from valve)

1/2" Outside Dia. Copper Tube (not included)
FIG. 6

SINGLE BYPASS VALVE
Pull out for "Service" (Soft water)
Push in for "Bypass"

3 VALVE BYPASS

FIG. 7

Outlet Valve

Bypass Valve

Inlet Valve

From Water Softener

To Water Softener

FIG. 8

Installation Instructions

TYPICAL INSTALLATION

To Outside Faucets

Hard Water

Water Softener Valve
To Controller

Plug-in Power Supply
Valve Drain Elbow
Overflow Drain Elbow
Salt Storage Tank Overflow
Hose*

Main Water Pipe

Soft Water

Clips

Outlet Inlet

Valve Drain Hose*

Lubricated O-ring

Secure Valve Drain Hose in place over Floor Drain

Pipe 1" NPT Sweat Adaptor (not included) 1" NPT Threaded Adaptor O-ring
Single Bypass Valve

*Do not connect the water softener valve drain tubing to the salt storage tank overflow hose.

Floor Drain

1-1/2" air gap

NOTE: See "Air Gap Requirements" section.
FIG. 9A

TURN OFF WATER SUPPLY
1. Close the main water supply valve, located near the well pump or water meter.
2. Shut off the electric or fuel supply to the water heater. 3. Open all faucets to drain all water from house pipes. NOTE: Be sure not to drain water from the water
heater, as damage to the water heater elements could result.
ASSEMBLY
1. Rheem® models are factory assembled. During installation, unsnap and remove the top cover, together with the salt lid, to expose the softener valve assembly. Set them aside to prevent damage. Check the brinewell to be sure it is secured and vertical (See Figure 11).

2. Install the brine tank overflow grommet and elbow into the 13/16" diameter hole in the back of the salt storage tank wall.
MOVE THE UNIT INTO PLACE
1. Move the water softener into the desired location. Set it on a solid, level surface.
IMPORTANT: Do not place shims directly under the salt storage tank to level the softener. The weight of the tank, when full of water and salt, may cause the tank to fracture at the shim.
continued on next page

Installation Instructions

TYPICAL INSTALLATION (with optional motorized water shutoff valve)

To Outside Faucets

Hard Water

Water Softener Valve
To Controller

Plug-in Power Supply
Valve Drain Elbow
Overflow Drain Elbow
Salt Storage Tank Overflow
Hose*

*Do not connect the water softener valve drain tubing to the salt storage tank overflow hose.

Main Water Pipe

Soft Water

1" NPT Pipe Nipple (not included)

Plug into Controller
Optional Motorized Water Shutoff Valve
(not included with water softener)

Clips Outlet Inlet

Pipe
1" NPT Sweat Adaptor (not included)
1" NPT Threaded Adaptor
O-ring

Valve Drain Hose*

Lubricated O-ring

Secure Valve Drain Hose in place over Floor Drain

Single Bypass Valve

Floor Drain

1-1/2" air gap

NOTE: See "Air Gap Requirements" section.
FIG. 9B

OPTIONAL: INSTALL THE MOTORIZED WATER SHUTOFF VALVE

If you purchased the optional water shutoff valve, install it in the plumbing upstream of the softener inlet. Figure 9B shows installation with the shutoff valve immediately upstream of the bypass valve inlet, using one of the softener's installation adaptors and a 1" NPT pipe nipple (not included).
The shutoff valve may also be installed in the plumbing farther upstream of the softener, making sure that the 10 foot long cable will reach the softener's electronic control board (See Figure 9C). The shutoff valve's inlet and outlet are female 1" NPT. Support the weight of the shutoff valve.
After completing plumbing, make sure that the water softener is not powered up, and plug the cable from the shutoff valve into the corresponding connector on the electronic control board (See Fig. 9C or Schematic on Page 26).
CAUTION: Do not place fingers into the motorized shutoff valve when it is plugged into the electronic controller.

Electronic Control Board on back of
Faceplate

Optional Motorized Water Shutoff Valve

Plug cable into electronic control board (power must be off)

FIG. 9C

NOTE: The shutoff valve may be operated manually by pulling out and turning the knob on the shutoff valve body (See Fig. 66 on Page 26), although there is no need to do this when installing.

Installation Instructions

continued from previous page
2. Visually check and remove any debris from the water softener valve inlet and outlet ports.
3. Make sure the turbine assembly spins freely in the "out" port of the valve (See Figure 10).
4. If not already done, put a light coating of silicone grease on the single bypass valve o-rings.
5. Push the single bypass valve into the softener valve as far as it will go. Snap the two large holding clips into place, from the top down as shown in Figures 12 & 13.
IMPORTANT: Be sure the clips snap firmly into place so the single bypass valve will not pull out.
COMPLETE INLET AND OUTLET PLUMBING
Measure, cut, and loosely assemble pipe and fittings from the main water pipe to the inlet and outlet ports of the water softener valve. Be sure to keep fittings fully together, and pipes squared and straight.
Be sure hard water supply pipe goes to the water softener valve inlet side.
NOTE: Inlet and outlet are marked on the water softener valve. Trace the water flow direction to be sure hard water is to inlet.
IMPORTANT: Be sure to fit, align and support all plumbing to prevent putting stress on the water softener valve inlet and outlet. Undue stress from misaligned or unsupported plumbing may cause damage to the valve.
Complete the inlet and outlet plumbing for the type of pipes you will be using.

Salt Lid
Brinewell Cover
Brinewell
Stand Tube Float Stem Brine Valve

Top Cover

Nozzle & Venturi Assembly

Clip Channel

Brine Tank Overflow Grommet
Brine Tank Overflow
Elbow
Brine Tubing
13/16" Hole
Salt Storage Tank
FIG. 11

Single Bypass Valve
FIG. 12

Turbine Support

Correct Assembly
Clip

Valve Outlet

Turbine

FIG. 10

Outside diameter of water softener valve inlet & outlet

Outside diameter of clip channel on single bypass valve

FIG. 13

NOTE: Be sure all 3 tabs of the clip go through the matching holes on the water softener valve inlet or outlet, and fully into the channel on the single bypass valve. Make sure that the tabs are fully seated.

Installation Instructions

COLD WATER PIPE GROUNDING
CAUTION: The house cold water pipe (metal only) is often used as a ground for the house electrical system, The 3-valve bypass type of installation, shown in Figure 8, will maintain ground continuity. If you use a plastic bypass valve at the unit, continuity is broken. To restore the ground, do the following:
1. Install a #4 copper wire across the removed section of main water pipe, securely clamping it at both ends (See Figure 14) - parts not included.
NOTE: Check local plumbing and electrical codes for proper installation of the ground wire. The installation must conform to them. In Massachusetts, plumbing codes of Massachusetts shall be conformed to. Consult with your licensed plumber.
Ground Wire

Clamp (2)

FIG. 14

INSTALL VALVE DRAIN HOSE
NOTE: See valve drain options on pages 6 & 7.
1. Measure, cut to needed length and connect the 3/8" drain line (provided) to the water softener valve drain fitting. Use a hose clamp to hold the hose in place.
IMPORTANT: If codes require a rigid drain line see "Valve Drain requirements" section.
2. Run the drain hose (or a rigid line) to the floor drain. Secure drain hose. This will prevent "whipping'' during regenerations. Be sure to provide a 1-1/2" minimum air gap to prevent possible sewer water backup. See "Air Gap Requirements" section.
NOTE: In addition to a floor drain, you can use a laundry tub or standpipe as a drain point for this hose.. Avoid long drain hose runs, or elevating the hose more than 8 feet above the floor.

INSTALL SALT STORAGE TANK OVERFLOW HOSE
1. Measure, cut to needed length and connect the 3/8" drain line (provided) to the salt storage tank overflow elbow and secure in place with a hose clamp.
2. Route the hose to the floor drain, or other suitable drain point no higher than the drain fitting on the salt storage tank (This is a gravity drain). If the tank overfills with water, the excess water flows to the drain point. Cut the drain line to the desired length and route it neatly out of the way.
IMPORTANT: For proper operation of the water softener, do not connect the water softener valve drain tubing to the salt storage tank overflow hose.
TEST FOR LEAKS
To prevent air pressure in the water softener and plumbing system, complete the following steps in order:
1. Fully open two or more softened cold water faucets close to the water softener, located downstream from the water softener.
2. Place the bypass valve (single or 3 valve) into the "bypass" position. See Figures 7 & 8 on Page 7.
3. Slowly open the main water supply valve. Run water until there is a steady flow from the opened faucets, with no air bubbles.
4. Place bypass valve(s) in "service" or soft water position as follows:
= Single bypass valve: Slowly move the valve stem toward "service," pausing several times to allow the water softener to fill with water.
= 3 valve bypass: Fully close the bypass valve and open the outlet valve. Slowly open the inlet valve, pausing several times to allow the water softener to fill with water.
5. After about three minutes, open a hot water faucet until there is a steady flow and there are no air bubbles, then close this faucet.
6. Close all cold water faucets and check for leaks at the plumbing connections that you made.
7. Check for leaks around clips at softener's inlet and outlet. If a leak occurs at a clip, depressurize the plumbing (turn off the water supply and open faucets) before removing clip. When removing clips at the softener's inlet or outlet, push the single bypass valve body toward the softener (See Figure 15). Improper removal may damage clips. Do not reinstall damaged clips.

Installation Instructions

If removing clips...
...depressurize the plumbing, then push Bypass Valve body toward softener
FIG. 15
ADD WATER AND SALT TO THE SALT STORAGE TANK
1. Using a container, add about three gallons of clean water into the salt storage tank.
2. Add salt to the storage tank. Use nugget, pellet or coarse solar salts with less than 1% impurities.
PLUG IN THE POWER SUPPLY
During installation, the water softener wiring may be moved or jostled from place. Check to be sure all leadwire connectors are secure on the back of the electronic board and be sure all wiring is away from the valve gear and motor area, which rotates during regenerations. 1. Plug the water softener's power supply into an elec-
trical outlet that is not controlled by a switch and is approved by local codes. NOTE: The water heater is filled with hard water and,
as hot water is used, it will refill with conditioned water. In a few days, the hot water will be fully conditioned. To have fully conditioned hot water immediately, wait until the initial recharge is over. Then, drain the water heater (following instructions for water heater) until water runs cold.

SANITIZE THE WATER SOFTENER / SANITIZE AFTER SERVICE
Care is taken at the factory to keep your unit clean and sanitary. Materials used to make the unit will not infect or contaminate your water supply, and will not cause bacteria to form or grow. However, during shipping, storage, installation and operation, bacteria could get into the unit. For this reason, sanitizing as follows is suggested* when installing.
1. Slide open the salt lid, remove the brinewell cover and pour about 3 oz. (6 tablespoons) of household bleach into the softener brinewell. Replace the brinewell cover.
2 Make sure the bypass valve(s) is in the "service" (open) position.
3 Start a recharge: Press the RECHARGE button and hold for 3 seconds, until "Recharge Now" begins to flash in the display. This recharge draws the sanitizing bleach into and through the water softener. Any air remaining in the unit is purged to the drain.
4. After the recharge has completed, fully open a cold water faucet, downstream from the softener, and allow 50 gallons of water to pass through the system. This should take at least 20 minutes. Close the faucet.
*Recommended by the Water Quality Association. On some water supplies, the unit may need periodic disinfecting.
RESTART THE WATER HEATER
1. Turn on the electricity or fuel supply to the water heater and relight the pilot, if applicable.
NOTE: The water heater is filled with hard water and, as hot water is used, it refills with conditioned water. In a few days, the hot water will be fully conditioned. To have fully conditioned hot water immediately, wait until the initial recharge (previous step) is over. Then, drain the water heater (following instructions for water heater) until water runs cold.

PROGRAM THE CONTROLLER
1. Install the softener's top cover and salt lid. 2. Complete the Programming Steps on Pages 13 & 14.

Programming the Water Softener

Salt Lid

Status Light (see Page 16)

Display
RECHARGE button

UP button
DOWN button
SELECT button

FIG. 16

FIG. 19

CLEAN REMINDER
The screen in Figure 17 appears, with "CLEAn" flashing in the display, when four months have elapsed on the system's timer since start up or the last reset.

FIG. 17
This is a reminder to use Rheem® RHWSC Water Softener Cleaner (P/N RHWSC21) three times a year. To reset the timer, press any button on the control panel and "CLEAn" will disappear.
PROGRAM THE SOFTENER
When the power supply is plugged into the electrical outlet, the model code (rH42) and a software version number (example: r4.2), are briefly shown in the faceplate display. Then the words "SET TIME" appear and "12:00 PM" begins to flash.

FIG. 20
1. Press the r UP or s DOWN buttons to set the
present time. Up moves the display ahead; down sets the time back.
NOTE: Press buttons and quickly release to slowly advance the display. Hold the buttons down for fast advance.
NOTE: On Wi-Fi connected systems, the current time will be updated and maintained automatically via Wi-Fi.
2. When the correct time is displayed, press the SELECT button, and the display will change to show the "Hardness" screen.
STEP 2. SET WATER HARDNESS NUMBER
If you completed the previous step, the word "HARDNESS" should show in the display. Otherwise, press the SELECT button several times until it does.
1. Press the r UP or s DOWN buttons to set the
hardness of your water supply, in grains per gallon. The default is 25.

FIG. 18
STEP 1. SET PRESENT TIME OF DAY
If the words "SET TIME" do not show in the display, press the SELECT button a few times until they do.

FIG. 21
continued on next page

Programming the Water Softener

NOTE: If your water supply contains iron, compen-

sate for it by adding to the water hardness

number. For example, assume your water is

20 gpg hard and contains 2 ppm iron. Add 5

to the hardness number for each 1 ppm of iron.

In this example, you would use 30 for your

hardness number.

20 gpg hardness

2 ppm iron x 5 = 10 +10

(times)

30 HARDNESS NUMBER

2. When finished setting your water's hardness number, press the SELECT button, and the display will change to show the "Recharge Time" screen.

STEP 3. SET RECHARGE (REGENERATION)
START TIME
If you completed the previous step, the words "RECHARGE TIME" should show in the display. Otherwise, press the SELECT button several times until they do.

which KCl dissolves. See also Page 21 for more information on salt types.
2. When the correct salt type is displayed, press the SELECT button, and the display will change to show the "Set Salt Level" screen.
STEP 5. SET SALT LEVEL
If you completed the previous step, the words "SET SALT LEVEL" should show in the display. Otherwise, press the SELECT button until they do.

Salt Level

Brine-

well

5 Num-
4 bers

FIG. 22
1. The softener's default recharge start time is 2:00 AM. This is normally a time of day when water is not being used in the household. Hard water bypasses the softener if the household draws water during the recharge cycle. If a different
recharge start time is desired, press the r UP or s DOWN buttons to change the time, in 1-hour
increments. Be sure AM or PM is correct.
2. When the desired recharge start time is displayed, press the SELECT button, and the display will change to show the "Set Salt Type" screen.
STEP 4. SET SALT TYPE
If you completed the previous step, either "NaCl" (for Sodium Chloride) or "KCl" (for Potassium Chloride) should show in the display. Otherwise, press the SELECT button several times until one of them does.

FIG. 24
1. Lift the salt lid and level the salt in the storage tank.
2. The salt level scale, on the brinewell inside the tank, has numbers from 0 to 8 (see Fig. 24). Observe the highest number the leveled salt is at, or closest to.
3. Press the r UP or s DOWN buttons until the
number on the screen corresponds to the salt level. At level 2 or below, "LOW SALT LEVEL" will flash in the display. If you wish to turn this feature off,
press the s DOWN button past 0, and the word
"OFF" flashes in the display.
4. When finished setting the salt level, press the SELECT button. The display returns to the normal time of day screen (Fig. 25).

FIG. 25

FIG. 23
1. Press the r UP or s DOWN buttons to set the
type of salt you will be using in your water softener. The default is NaCl (standard Sodium Chloride water softener salt). If you will be using KCl (Potassium Chloride) instead, be sure to set salt type to KCl. This setting adjusts the regeneration cycle times to compensate for the different rate at

SALT LEVEL MONITOR SYSTEM
You must set salt level each time salt is added to the water softener. The salt monitor system estimates salt levels, and accuracy will vary with different salts. At level 2 or below, "LOW SALT LEVEL" will flash in the display (Fig. 26) to remind you to add salt.
FIG. 26

Programming the Water Softener

EXTRA RECHARGE
Sometimes, a manually initiated recharge (regeneration) may be desired, or needed. Two examples are:
= You have used more water than usual (guests visiting) and you may run out of soft water before the next automatic regeneration.
= You did not add salt to the softener before it ran out. Add salt to the softener before regenerating.
You can start a regeneration immediately, or you can set the controller to regenerate at the next preset recharge time (2:00 AM, or as set).

PROGRAM MEMORY
If electrical power to the softener goes off, the time display is blank but the electronic controller keeps the correct time for several hours. When electrical power comes on again, you will have to reset the present time only if the display is flashing. The HARDNESS and RECHARGE TIME never require resetting unless a change is desired. Even if the clock is incorrect after a long power outage, the softener works as it should to keep your water soft, however, regenerations may occur at the wrong time of day until you reset the clock to the correct time of day.

RECHARGE NOW
Press the RECHARGE button and hold for 3 seconds, until the words "RECHARGE NOW begin to flash in the display
FIG. 27
The softener enters the fill cycle of regeneration immediately. This regeneration will take about 2 hours to complete. Then, you will have soft water again. NOTE: If the "Clean Feature" is set ON, the normal
regeneration cycle is preceded by a cleaning backwash and rinse.
RECHARGE TONIGHT
If you do not want to start an immediate recharge, but would like an extra recharge at the next preset recharge start time, do the following to schedule a recharge: Press and release (do not hold) the RECHARGE button. "RECHARGE TONIGHT" will begin flashing in the display, and the softener will begin regeneration at the next preset recharge time (2:00 AM, or as set).

CLEANSING FEATURE
The cleansing feature keeps larger particles of sediment from entering the home's plumbing system. As water passes through the softener, the larger sediment particles are collected in the integrated basket and then rinsed to the drain before each regeneration. The cleansing feature provides added protection for water using appliances by reducing the chance of larger particles entering the various products valves and screens. The "Clean Feature" may be turned ON to provide an extra backwash that will help keep the cleansing screen clean. The default is OFF.
IMPORTANT: The cleansing feature is not intended to replace pretreatment filtration. For problem water applications, additional sediment filtration is recommended.

Cleansing Screen

Resin Tank

Top Distributor

FIG. 28
If you decide to cancel the regeneration before it starts, press and release the RECHARGE button once more. "RECHARGE TONIGHT" will stop flashing in the display.
15

FIG. 29

Connecting the System to Wi-Fi

STEP 1. DOWNLOAD THE iQuaTM APP
Go to the App Store or Google Play and download the iQuaTM app. This must be installed on your phone to set up an account and connect your water softener to the "cloud".
STEP 2. SET UP YOUR ACCOUNT
1. Activate the iQuaTM app. 2. On the welcome screen, click Create an Account.

STEP 3. PUT WATER SOFTENER CONTROL INTO CONNECT MODE
1. If you haven't already done so, program the water softener with time, hardness, salt level, etc., as shown on pages 13 & 14.
2. Make sure that the softener's display shows the current time, without the word "SET". Press the SELECT button several times if "SET" shows.
3. On the water softener's front panel (see Fig. 33),
press both the r UP and s DOWN buttons, and
hold them for 3 seconds.

Press both UP and DOWN buttons, and hold for 3 seconds, to put into Connect Mode

FIG. 33

FIG. 30

FIG. 31

3. Fill in the required fields with your information (name, phone number, address, etc.). Enter the email address you want to receive notifications. Create a password to access your account.

4. Agree to the terms and press Complete.

5. A message to check your e-mail appears. An activation e-mail has been sent to the address you provided when creating the account. If you don't see it your inbox, check your spam or junk folders, and flag it as safe so that future notifications from myiqua.com will not be blocked. Wait to click the link in this e-mail until you have put the water softener control into Connect Mode, as follows.

Check your email to activate your account
FIG. 32

4. Release the buttons when "Conn" appears in the display (See Fig. 33) and the connection status light above the control panel begins flashing amber.
5. The system is now in Connect Mode, ready to be connected to the "cloud", and will remain for 15 minutes. If Connect Mode has "timed out" and the light is off, you can enter Connect Mode again by
pressing both the r UP and s DOWN buttons
and holding them for 3 seconds.

Connection Status light indication

Status

Flashing Amber (for up to 15 minutes)

System is in Connect Mode, waiting to be connected to the "cloud" via the home's wireless router.

Green

System successfully connected to the "cloud" and registered.

Red

System is currently receiving an over-the-air update.

No light

System not currently connected to the "cloud".

6. With the system in the Connect Mode, follow the instructions on the next page to use the app to connect your water softener to the "cloud" via the home's wireless router.

Connecting the System to Wi-Fi

STEP 4. CONNECT AND REGISTER YOUR WATER SOFTENER

1. If you completed the steps on the previous page, you will have received an account activation e-mail from myiqua.com. Open this e-mail and click on the Activate Account link.

2. Sign in to your account using the e-mail address and password you provided when setting it up.

3. The app screen will change to show Searching for your device...

connect mode

4. Verify that the softener is still in Connect Mode (flashing amber light). When the display on the water softener changes from "Conn" to "C-1", it is communicating with your phone.

FIG. 34

6. The app screen will change to show a list of wireless networks in range. Select your home's wi-fi router and enter your wi-fi network password.

Home_Wireless_Network Other_Network_1 Other_Network_2

Home_Wireless_Network

FIG. 39

FIG. 40

7. The water softener's display will change to "C-2" when the system connects with the home's wireless network. It will change again to "C-3" when it connects with the iQuaTM server in the "cloud".

FIG. 35

FIG. 36

5. The app screen will change to show a list of devices in range. There should be a name that begins with WCD, followed by a serial number. This is your Rheem® water softener. Select it and the screen changes to Pairing Your Device.

FIG. 41

FIG. 42

8. The app will prompt you to provide a nickname for your softener. This will be displayed on the "Devices" list when you sign in to the app. After entering the nickname, press Complete Setup.

WCD

My Softener

FIG. 37

FIG. 38
17

My Softener

FIG. 43

FIG. 44

Controller Features

OPTIONAL SETTINGS:
= SALT EFFICIENCY = CLEAN FEATURE = CLEAN FEATURE MINUTES = MAXIMUM DAYS BETWEEN REGEN-
ERATIONS = 12 / 24 HOUR CLOCK = BACKWASH & FAST RINSE TIMES
1. To set any of these options, press and hold the SELECT button for 3 seconds until "000 - -" shows in the display.

California Efficiency Requirement
Your Rheem® Water Softener has a "High Efficiency" feature that can be set ON or OFF. This softener is shipped with the efficiency feature set OFF, which will utilize the maximum rated capacity while most often achieving maximum salt efficiencies. When installing this unit in the State of California, you MUST turn the efficiency feature ON. The softener may initiate more frequent recharges, but it will operate at 4000 grains per pound of salt or higher.
2. Press SELECT again to display the "Set Clean" screen.

FIG. 45
Then press (do not hold) SELECT again to display one of the "Salt Efficiency" screens shown below.
Efficiency Icon
FIG. 46
SALT EFFICIENCY: When this feature is ON, the water softener will operate at salt efficiencies of 4000 grains of hardness per pound of salt or higher. The softener may recharge more often using smaller salt dosage and less water. This softener is shipped with the efficiency feature set OFF. Use
the r UP or s DOWN buttons to change
between OFF and ON. An efficiency icon will be displayed when this feature is ON.
Displayed when efficiency is set to "ON"
FIG. 47

FIG. 48
CLEAN: This feature is beneficial on water supplies containing iron and/or high amounts of sediments (sand, silt, dirt, etc.). When set to ON, a backwash and fast rinse cycle will occur first, preceding the normal regeneration sequence. This provides extra cleaning of the resin bed before it is regenerated with the salt brine. To conserve water, if your water supply does not contain iron or sediments, be sure this feature is set to OFF. The
default is OFF. Use the r UP or s DOWN but-
tons to change between OFF and ON.
3. Press SELECT again to display the "Set Clean Time" screen.
FIG. 49
CLEAN FEATURE MINUTES: If you have set the Clean Feature ON, the length of the extra backwash cycle automatically is set to 3 minutes. However, you can adjust this time from 1 to 15 minutes in length. To change this cycle time, use
the r UP button to increase the time, or the s DOWN button to shorten the time. If no change
is desired, continue to next step.

Controller Features

4. Press SELECT again to display the "Recharge Days" screen.

6. Press SELECT again to display the backwash time "Add" screen.

FIG. 50
MAXIMUM DAYS BETWEEN REGENERATIONS: The electronic controller automatically determines regeneration frequency. This provides the greatest operating efficiency and, under most conditions this feature will be left in its default mode. However, you can set this feature to force a regeneration every set number of days. You may want to do this if, for example, your water supply contains iron and you want the softener to regenerate at least once every few days to keep the resin bed clean. Use
the r UP or s DOWN buttons to change the
number of days (up to 15). If no change is desired, continue to next step. 5. Press SELECT again to display the "12 or 24 hr" screen.
FIG. 51
12 OR 24 HOUR CLOCK: All time displays are shown in 12 hour (AM/PM) time format at the default setting. If 24 hour time format is desired,
set to 24 hr by pressing the r UP button.

FIG. 52
BACKWASH & FAST RINSE TIMES: If you experience salty tasting water after regeneration, you may need to increase the backwash and fast rinse times. The cycle times during regeneration are determined by the softener's electronic controller. However, you may increase the backwash and fast rinse times, in 1 minute increments. If you wish to increase the backwash time, use the
r UP or s DOWN buttons to add up to 15 min-
utes. Then press SELECT to display the fast rinse time "Add" screen.
FIG. 53
If you wish to increase the fast rinse time, use the
r UP or s DOWN buttons to add up to 15 minutes.
7. Press SELECT to return to the normal run (time of day) screen.
FIG. 54

Bypass Blending Valve

The bypass blending valve works as a typical pushpull bypass valve, but has the added ability to finely adjust hardness of the treated water leaving the water softener. If slightly harder water is desired than is normally output by the water softener, this bypass blending valve can divert a small stream of hard water before it enters the water softener and blend it with the exiting softened water. The amount of water diverted is controlled by turning a blend adjusting knob on the end cap of the valve stem (See Figure 55).
IMPORTANT: Turn the blend adjusting knob by hand only. Do not overtighten.
1. When the bypass valve is in service position (normal softener operation), with handle pulled all the way out (See Figure 55), increase hardness of treated water by turning the blend adjusting knob counterclockwise up to 6 turns from the fully closed position. Before turning the knob, unlock it, if necessary, by turning the hex nut counterclockwise. While adjusting the knob, hold the bypass valve handle to prevent the stem from rotating.
2. Do not continue to turn the knob counterclockwise beyond 6 turns from the fully closed position, as this would eventually pull the screw's internal orings out of their seat and water would leak from the bypass valve.
3. Decrease hardness of treated water by turning the blend adjusting knob clockwise while holding the bypass handle. Do not overtighten. When the knob is fully closed, hard water is not being blended with treated water.
4. Once the desired hardness is achieved, the adjustment knob may be locked in place by tightening the hex nut clockwise against the end cap using an adjustable wrench. Hold the bypass valve handle to prevent the stem from rotating, or else use another wrench to grip the stem on the flats between the end cap and the bypass valve body. Loosen the hex nut (turn it counterclockwise) before readjusting the hardness or closing the diversion path for servicing (see next step)
5. If the water softener is to be serviced or disconnected from the bypass valve, the blend adjusting knob must be closed to block the diversion path and prevent water leaking from the softener valve inlet of the bypass valve.

SERVICE POSITION (Normal Softener Operation)

Pull Handle

Soft Water Out Hard Water In
Diverted Hard Water (controlled by blend
adjusting knob)

Softener Valve Outlet

Softener Valve Inlet

Blend Adjusting Knob Turn, by hand only, counterclockwise to increase hardness of
treated water (clockwise to decrease hardness)
FIG. 55

Push Handle

BYPASS POSITION
Hard Water Out Hard Water In

Hex Nut Turn clockwise to lock blend adjusting knob (counterclockwise to unlock)

Blend Adjusting Knob If servicing water softener,
turn, by hand only, clockwise until closed
FIG. 56

Routine Maintenance

ADDING SALT
Lift the salt lid and check the salt storage level frequently. If the water softener uses all the salts before you refill it, you will experience hard water. Until you have established a refilling routine, check the salt every two or three weeks. Always add if less than 1/4 full. Be sure the brinewell cover is on.
NOTE: In humid areas, it is best to keep the salt storage level lower, and to refill more often to avoid salt "bridging".
Recommended Salt: Nugget, pellet or coarse solar salts with less than 1% impurities.
Salt Not Recommended: Rock salt, high in impurities, block, granulated, table, ice melting, ice cream making salts, etc.

BREAKING A SALT BRIDGE
Sometimes, a hard crust or salt "bridge" forms in the brine tank. It is usually caused by high humidity or the wrong kind of salt. When the salt "bridges," an empty space forms between the water and the salt. Then, salt will not dissolve in the water to make brine. Without brine, the resin bed is not recharged and hard water will result.
If the storage tank is full of salt, it is difficult to tell if you have a salt bridge. A bridge may be underneath loose salt. Take a broom handle, or like tool, and hold it next to the water softener. Measure the distance from the floor to the rim of the water softener. Then, carefully push the broom handle straight down into the salt. If a hard object is felt before the pencil mark is even with the top, it is most likely a salt bridge. Carefully push into the bridge in several places to break it. Do not use any sharp or pointed objects as you may puncture the brine tank. Do not try to break the salt bridge by pounding on the outside of the salt tank. You may damage the tank.

Push Tool into Salt Bridge to
Break

1" - 2"
Pencil Mark
Broom Handle

Salt Salt Bridge Empty Space Water Level
FIG. 57

Routine Maintenance

CLEANING THE NOZZLE & VENTURI
A clean nozzle & venturi (See Figure 58) is a necessity for the water softener to work properly. This small component creates the suction to move brine from the brine tank, into the resin tank. If it should become plugged with sand, silt, dirt, etc., the water softener will not work, and hard water will result.

Cap O-ring Seal Screen Support
Screen Nozzle & Venturi Disc
Gasket *Flow Plug (HVDC)
Housing

*Flow Plug Cone Screen

*Install with lettered side up, concave side down.

Ferrule Nut

IMPORTANT: Be sure small hole in the gasket is centered directly over the small hole in the nozzle & venturi housing. Be sure the numbers are facing up.
FIG. 58

To get access to the nozzle & venturi, remove the water softener's top cover. Put the bypass valve(s) into the bypass position. Be sure the water softener is in soft water (service) cycle (no water pressure at nozzle & venturi). Then, holding the nozzle & venturi housing with one hand, unscrew the cap. Do not lose the o-ring seal. Lift out the screen support and screen. Then, remove the nozzle & venturi disc, gasket and flow plug(s). Wash the parts in warm, soapy water and rinse in fresh water. Be sure to clean both the top and bottom of the nozzle & venturi disc. If needed, use a small brush to remove iron or dirt. Do not scratch, misshape, etc., surfaces of the nozzle & venturi.
Carefully replace all parts in the correct order. Lubricate the o-ring seal with silicone grease and locate in place. Install and tighten the cap by hand, while supporting the housing. Overtightening may break the cap or housing. Put the bypass valve(s) into service (soft water) position.
Recharge the softener to reduce water level in the tank. This will also assure that the softener is completely recharged and ready to provide softened water again. Check the water level in the tank by looking down the brinewell. If the water level does not drop after a recharge, the problem has not been resolved. Call 1-800-754-7027.

PROTECT THE WATER SOFTENER FROM FREEZING
If the softener is installed where it could freeze (summer cabin, lake home, etc.), you must drain all water from it to stop possible freeze damage. To drain the softener:
1. Close the shut-off valve on the house main water pipe, near the water meter or pressure tank.
2. Open a faucet in the soft water pipes to vent pressure in the softener.
3. Move the stem in the single bypass valve to bypass. Close the inlet and outlet valve in a 3 valve bypass system, and open the bypass valve. If you want water in the house pipes again, reopen the shut-off valve on the main water pipe.
4. Unplug the power supply at the wall outlet. Remove the softener's top cover, together with the salt lid. Take off both drain hoses if they will interfere with moving the softener into position over the drain.
5. Carefully remove the large holding clips at the softener inlet and outlet. Separate the softener from the plastic installation adaptors, or from the bypass valve.
6. Lay a piece of 2 inch thick board near the floor drain (See Figure 59).
7. Move the softener close to the drain. Slowly and gently, tip it over until the rim rests on the wood block with the inlet and outlet over the drain. Do not allow the softener's weight to rest on the inlet and outlet fittings or they may break.
8. Tip the bottom of the softener up a few inches and hold until all water has drained. Leave the softener laying like this until you are ready to use it. Plug the inlet and outlet with clean rags to keep dirt, bugs, etc. out.

Floor Drain

Wood Block

FIG. 59

Troubleshooting Guide

PROBLEM
No soft water No soft water & display is blank
No soft water & salt level not dropping No soft water & salt storage tank full of water, water running to drain while unit is in the soft water cycle
Water hard sometimes
Iron in water
Resin in household plumbing Salt storage tank leaking Motor stalled or clicking Error code E1, E3 or E4 appears
Error code E5 Status light off, but display is not blank

CAUSE
1. No salt in the storage tank. 1. Power supply unplugged at wall outlet, or
power cable disconnected from back of electronic board or power supply malfunction. 2. Fuse blown, circuit breaker popped, or circuit switched off (See "Program Memory" on Page 15). 3. Electronic control board malfunction. 1. Salt storage tank "bridged". 2. Bypass valve(s) in "bypass" position. 1. Dirty, plugged or damaged nozzle & venturi assembly 2. Inner valve fault causing leak. 3. Valve drain hose is plugged.
4. Valve drain line and Salt Storage Tank overflow drain connected together by a tee.
5. Low or high system water pressure (low pressure may disrupt brine draw during recharge, high pressure may cause inner valve parts failure).
6. Brine float dirty or broken. 7. Leak between valve and resin tank. 1. Incorrect time set. 2. Incorrect water hardness set. 3. Incorrect model code programmed.
4. Hot water being used when softener is regenerating.
5. Possible increase in water hardness.
6. Leaking faucet or toilet valve. Excessive water usage.
1. Clear water iron in water supply.
2. Iron in soft water.
3. Bacterial or organic bound iron. 1. Crack in distributor or riser tube.

CORRECTION
Refill with salt and then use RECHARGE NOW feature. Check for loss of power and correct. Reset electronic controls and then use RECHARGE NOW feature.
Replace fuse, reset circuit breaker, or switch circuit on, and then use RECHARGE NOW feature.
Replace electronic control board (See Page 29). Refer to "Breaking a Salt Bridge" section to break. Move bypass valve(s) to "service" position. Take apart, clean and inspect nozzle & venturi (See "Cleaning the Nozzle & Venturi" section.
Replace seals and rotor. Hose must not have any kinks, sharp bends or any water flow blockage (See "Valve Drain Requirements" section.
Disconnect tee and run separate drain lines.
If pressure is low, increase well pump output to a minimum 20 psi. If daytime pressure is over 100 psi, add a pressure reducing valve in the supply pipe to the softener. Contact a licensed plumber.
Clean or replace Brine Valve Float Assembly. Replace o-rings between resin tank and valve. Check and change time setting. Refer to "Set Water Hardness" section to set correctly. Refer to "Program the Water Softener" section to set correctly.
Avoid using hot water while the softener is regenerating, as the water heater will fill with hard water.
Test untreated water for hardness and iron, and program the water softener accordingly (See "Set Water Hardness") section to set. A small leak can waste hundreds of gallons of water in a few days. Fix all leaks and always fully close faucets.
Test untreated water for hardness and iron, and program the water softener accordingly (See "Set Water Hardness") section to set. Clean resin bed with Resin Bed Cleaner. Follow instructions on package.
Cannot be treated by water softener. Replace resin tank assembly.

1. Crack in brine tank.

Replace salt storage tank assembly.

1. Motor malfunction or internal valve fault causing high torque on motor.
1. Fault in wiring harness or connections to position switch.
2. Fault in switch. 3. Fault in valve causing high torque. 4. Motor inoperative. 1. Electronic control malfunction. 1. System not connected by Wi-Fi to the "cloud".
2. Status light dislodged from its holder. 23

a. Replace rotor/seal. b. Replace motor & switch.
Replace wiring harness or connections to position switch.
Replace switch. Replace rotor/seal. Replace motor. Replace electronic control board. a. If internet service goes down, connection will automat-
ically resume when internet service comes back up. b. If the home's wireless router was replaced, reconnect
and register the system, as shown on Pages 16 &17.
Remove top cover and reinsert status light into its holder.

Troubleshooting

AUTOMATIC ELECTRONIC DIAGNOSTICS
This water softener self-monitors electronic components and circuits for correct operation. If a malfunction occurs, an error code appears in the display.

3. The letter "P" and a dash (or dashes) indicate POSITION switch operation (See Figure 61). If the letter appears, the switch is closed. If the dash shows, the switch is open.

FIG. 60
Error Codes 01, 02, 03, 04 & 05:
These are the water softener error codes unrelated to the optional water shutoff valve. While one is in the display, the SELECT button remains operational so the service person can perform the Manual Advance Diagnostics, below, to further isolate the problem.
Procedure for removing error codes 01 through 05 from display:
1. Unplug power supply from electrical outlet. 2. Correct problem. 3. Plug power supply back in. 4. Wait 8 minutes. The error code will return if
the problem was not corrected.
Error Codes 07, 08 & 09:
These error codes indicate a problem with the optional water shutoff valve. Make sure that the water shutoff valve is still plugged into the water softener's control board. To clear one of these codes from the display, press the RECHARGE button and hold for 3 seconds. If the error code is displayed again after a minute or two, the water shutoff valve probably needs to be replaced.
MANUAL ADVANCE DIAGNOSTICS
Use the following procedures to advance the water softener through the regeneration cycles to check operation.
Remove the top cover to expose the valve and observe cam and switch operation during valve rotation.
1. Press and hold SELECT for 3 seconds until "000" shows in the display, then release.
2. The 3 digits indicate water meter operation:
000 (steady) = Soft water not in use, and no flow through the meter.
Open a nearby soft water faucet.
000 to 140 (continual) = Repeats for each gallon of water passing through the meter.

Water Switch Meter

FIG. 61

4. Use the RECHARGE button to manually advance the valve into each cycle and check correct switch operation.
NOTE: Be sure water is in contact with the salt, and not separated by a salt bridge (See "Breaking A Salt Bridge" section).
5. While in this diagnostic screen, the following information is available and may be beneficial for various reasons. This information is retained by the computer from the first time electrical power is applied to the electronic controller.
a. Press the r UP button to display the number of
days this electronic control has had electrical power applied.
b. Press the s DOWN button to display the num-
ber of regenerations initiated by this electronic control since the code number was entered.
6. Press and hold the SELECT button until the model code (rH42) shows in the display. This code identifies the softener model. If an incorrect model code is displayed, the softener will operate on incorrect configuration data.

FIG. 62
7. To change the code number, press the r UP or s DOWN button until the correct code shows.
8. To return to the present time display, press the SELECT button.

Troubleshooting
RESETTING TO FACTORY DEFAULTS
To reset the electronic controller to its factory default for all settings (time, hardness, etc.): 1. Press the SELECT button and hold it until the dis-
play changes twice to show "CODE" and the flashing model code.
2. Press the r UP button (a few times, if necessary)
to display a flashing "SoS".

Position Markers (valve in service)
Motor

FIG. 63
3. Press the SELECT button, and the electronic controller will restart.
4. Set the present time, hardness, etc., as described on pages 13 & 14.
MANUAL ADVANCE REGENERATION CHECK
This check verifies proper operation of the valve motor, brine tank fill, brine draw, regeneration flow rates, and other controller functions. Always make the initial checks first, and perform the manually initiated electronic diagnostics.
NOTE: The display must show a steady time (not flashing). If an error code shows, first press the SELECT button to enter the diagnostic display.
1. Press the RECHARGE button and hold for 3 seconds. RECHARGE begins to flash as the softener's valve advances from the service to fill position.
2. Remove the brinewell cover and, using a flashlight, observe fill water entering the tank.
3. If water does not enter the tank, look for an obstructed nozzle, venturi, fill flow plug, brine tubing, or brine valve riser pipe.
4. After observing fill, press the RECHARGE button to move the softener into brining. A slow flow of water to the drain will begin. Verify brine draw from

Cam
FIG. 64
the brine tank by shining a flashlight into the brinewell and observing a noticeable drop in the liquid level.
5. If the softener does not draw brine: = nozzle and/or venturi dirty = nozzle and venturi not seated properly on gasket = restricted drain (check drain fitting and hose) = ineffective nozzle and venturi seal = other inner valve problem (rotor seal, rotor & disc, wave washer, etc.)
NOTE: If water system pressure is low, an elevated drain hose may cause back pressure, stopping brine draw.
6. Again press RECHARGE to move the softener into backwash. Look for a fast flow of water from the drain hose.
7. An obstructed flow indicates a plugged top distributor, backwash flow plug or drain hose.
8. Press RECHARGE to move the softener into fast rinse. Again look for a fast drain flow. Allow the softener to rinse for a few minutes to flush out any brine that may remain in the resin tank from the brining cycle test.
9. To return the softener to service, press RECHARGE once more.

Wiring Schematic

Status Light

120V AC 60 Hz

Power Supply

24V DC

Valve Motor

Turbine Sensor

Back of Electronic Controller (PWA)

Pwr. In

Motor

Position/ Turbine

Optional Motorized Water
Shutoff Valve

24V DC Auxiliary Output

OUT GND
+5

grn org C

NO Position NC Switch

FIG. 65

Optional Motorized Water Shutoff Valve

The Motorized Water Shutoff Valve (sold separately) may be used with this Rheem® Wi-Fi connected water softener and the iQuaTM app to remotely turn off the home's water supply. For example, you may want to turn off the water when going away on vacation. Install the motorized shutoff valve in the plumbing, upstream of the softener (see page 9), and plug the cable into the softener's electronic control board with the power off (see page 9 and Figure 65).
On the iQuaTM app, near the bottom of the softener's main dashboard, there is a line labeled "Water Control" with a button that, when pressed, alternates between "Water On" and "Water Off". If you receive an alert indicating continuous water flow, you can use this control to remotely shut off the water.
The system default for triggering a continuous water flow alert is 20 minutes of flow at 0.4 gallons per minute or higher. The time and water flow trigger values may also be adjusted in the "Alerts" section.
To manually operate the motorized water shutoff valve, pull out the round knob on the valve and turn it until the red line in the sight glass matches the desired (open or closed) position. See Figure 66. If you manually operate the valve, the app's "Water Control" feature will be disabled until you reset it by clicking "Yes" next to the "Regain Control?" prompt.

Motorized Water Shutoff Valve

Sight glass

OPEN OPEN
CLOSED

Knob pull out to turn
FIG. 66

Notes
27

Softener Exploded View

18 17
16
15 Valve Assembly See Pages 30 & 31
for parts

2 6

22 29

26 27 28
28

Softener Parts List

Key No.

Part No.

7112963

4 7077870

5 7327584

6 7265025

7331177

9 7247996

10 0502272

11 7384659

12 7386538

13 7384641

14 7384633

15 7386782

Description
Distributor O-Ring Kit (includes Key Nos. 1-3) O-Ring, 2-7/8" x 3-1/4" O-Ring, 13/16" x 1-1/16" O-Ring, 2-3/4" x 3" Top Distributor Repl. Bottom Distributor Filter Screen Tank Neck Clamp Kit (includes 2 ea. of Key Nos. 7 & 8) Clamp Section (2 req.) Retainer Clip (2 req.) Repl. Resin Tank, 10" x 40" Resin, 1 cu. ft. Repl. Brine Tank (order badge below) Badge, Rheem Rim Support, Faceplate Repl. Electronic Control Board (PWA), including status light

Key No.

Part No.

16 7384625

17 7385566

18 7386839

¢ 7386732

19 7386821

20 7351054

21 7386855

7386978

25 7214375

7331258

29 7310202

30 7327568

31 7139999

Description
Faceplate (order decal below) Faceplate Decal Salt Lid (order decal below) Instruction Decal Top Cover Power Supply, 24V DC Cover, Brinewell Brinewell Mounting Hardware Kit (includes Key Nos. 22-24) Wing Nut, 1/4-20 Spacer, 3/4" long Screw, 1/4-20 x 1-1/2" Brinewell Overflow Hose Adaptor Kit (includes Key Nos. 26-28) Adaptor Elbow Grommet Hose Clamp Repl. Brine Valve Assembly Float, Stem & Guide Assembly Drain Hose

¢ Not illustrated.

To order repair parts call toll free 1-800-754-7027.
Manufactured and warranted by Water Channel Partners 1890 Woodlane Drive Woodbury, MN 55125

Valve Exploded View

104 147 146 145 132

102
100 103
105 101
106 107
109 108

142

144

141

143

140

Wear Strip

139

Seal

Cross-section

138

View

137

136

135
127 134

131 133 130

128 116

129

148

110 121
111

112 122
117

118

113

123

114
115 119 120

124
125 123 126

Valve Parts List

Key No.

Part No.

7384691

100

101

102 7224087

103 7231393

104 0900857

105 7171250

7331169

106

107

108

109

110

7185487

111

112

113

114

115

116

117 7174313

118 7185500

7342712

119

120

121 7337589

122 7342704

123 7337597

Description
Motor, Cam & Gear Kit, 1" (includes Key Nos. 100-102) Motor Cam & Gear Screw, #8-32 x 1" (2 req.) Motor Plate Screw, #6-20 x 3/8" (3 req.) Bearing Drain Hose Adaptor Kit (includes Key Nos. 106-110) Clip, Drain Hose Clamp Drain Hose Adaptor O-Ring, 15/16" x 1-3/16" Flow Plug, 2.0 gpm Seal Kit (includes Key Nos. 111-116) O-Ring, 5/8" x 13/16" O-Ring, 1-1/8" x 1-1/2" O-Ring, 4-1/2" x 4-7/8" Rotor Seal Seal Seal, Nozzle & Venturi Bearing, Wave Washer Rotor & Disc Drain Plug Kit, 1" (includes Key Nos. 115, 119 & 120) Plug, Drain Seal Spring Clip, 1", pack of 4 Installation Adaptor, 1", pack of 2, including 2 ea. Clips & O-Rings (See Key Nos. 121 & 123) O-Ring, 1-1/16" x 1-5/16", pack of 4

Key No.

Part No.

124 7386986

7290931

125

126

127 7309811

128 7081201

129 7171145

130 7342649

131 1202600

132 7257454

133

134

135

136

137

138

139

140

141

142

¢ 7298913

143 7175199 144 7171161 145 7342681 146 7305150 147 7140738
148 7388598

Description
Bypass Blending Valve Assembly, 1" Turbine & Support Assembly, including 2 O-Rings (See Key No. 123) & 1 ea. of Key Nos. 125 & 126 Turbine Support & Shaft Turbine Wire Harness, Sensor Retainer, Nozzle & Venturi Valve Body O-Ring, 1/4" x 3/8", pack of 2 Nut - Ferrule Nozzle & Venturi Assembly (incl. Key Nos. 128, 130 & 133-142) Housing, Nozzle & Venturi Cone Screen Flow Plug, .3 gpm Gasket Nozzle & Venturi Disc, Blue Flow Plug, .15 gpm Screen Screen Support O-Ring, 1-1/8" x 1-3/8" Cap Repl. Nozzle, Venturi & Gasket Kit (includes Key Nos. 130, 134, 136, 137, & 141) Wave Washer Valve Cover Screw, #10-14 x 2-5/8", pack of 8 Switch Screw, #4-24 x 3/4" (2 req.) Motorized Water Shutoff Valve Ù with 1" NPT to 1" NPT Pipe Nipple

¢ Not illustrated. Ù Not included with softener.

To order repair parts call toll free 1-800-754-7027. Manufactured and warranted by Water Channel Partners 1890 Woodlane Drive Woodbury, MN 55125
Questions? Call Toll Free 1-800-754-7027 or visit www.rheemwatertreatment.com
When you call, please be prepared to provide the model and serial number, found on the rating decal inside the salt lid.

EXTEND YOUR WARRANTY:
Use Rheem® RHWSC Water Softener Cleaner and register at rheemwatertreatment.com
The factory warranty for your water softener is shown below. The one year full warranty period on parts and labor can be extended to five (5) years from the date of purchase if you use Rheem® RHWSC Water Softener Cleaner on your system, and register your purchase of Rheem® RHWSC Water Softener Cleaner at rheemwatertreatment.com. Use one bottle of Rheem® RHWSC Water Softener Cleaner, as directed, every four months from the date of purchase of the water softener. Purchase of no more than three (3) bottles of Rheem® RHWSC Water Softener Cleaner in a 12 month period may be applied toward compliance with this warranty. Use of any water softener additive other than Rheem® RHWSC will not provide extended warranty coverage.
WATER SOFTENER WARRANTY - MODEL RHW42
Warrantor: Water Channel Partners, 1890 Woodlane Drive, Woodbury, MN 55125 Warrantor guarantees, to the original owner, that:
One Year Full Warranty: For a period of one (1) year from the date of purchase, all parts will be free from defects in materials and
workmanship and will perform their normal functions. For a period of one (1) year from the date of purchase, labor to repair or replace any part deemed to be defective in
materials or workmanship, will be provided at no additional cost. Limited Warranties:
For a period of ten (10) years from the date of purchase, the salt storage tank and fiberglass mineral tank will not rust, corrode, leak, burst, or in any other manner, fail to perform its proper functions.
For a period of three (3) years from the date of purchase, the electronic control board will be free of defects in materials and workmanship and will perform its normal functions.
If, during such respective period, a part proves to be defective, Warrantor will ship a replacement part, directly to your home, without charge. After the first year, labor necessary to maintain this product is not covered by the product warranty. If you have questions regarding a warranted product, need assistance with installation or troubleshooting, wish to order a part or report a warranty issue, we are just a phone call away. SIMPLY DIAL 1-800-754-7027 for assistance.
General Provisions The above warranties are effective provided the water softener is operated at water pressures not exceeding 125 psi, and at water temperatures not exceeding 120°F; provided further that the water softener is not subject to abuse, misuse, alteration, neglect, freezing, accident or negligence; and provided further that the water softener is not damaged as the result of any unusual force of nature such as, but not limited to, flood, hurricane, tornado or earthquake. Warrantor is excused if failure to perform its warranty obligations is the result of strikes, government regulation, materials shortages, or other circumstances beyond its control. *THERE ARE NO WARRANTIES ON THE WATER SOFTENER BEYOND THOSE SPECIFICALLY DESCRIBED ABOVE. ALL IMPLIED WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED TO THE EXTENT THEY MIGHT EXTEND BEYOND THE ABOVE PERIODS. THE SOLE OBLIGATION OF WARRANTOR UNDER THESE WARRANTIES IS TO REPLACE OR REPAIR THE COMPONENT OR PART WHICH PROVES TO BE DEFECTIVE WITHIN THE SPECIFIED TIME PERIOD, AND WARRANTOR IS NOT LIABLE FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES. NO WARRANTOR DEALER, AGENT, REPRESENTATIVE, OR OTHER PERSON IS AUTHORIZED TO EXTEND OR EXPAND THE WARRANTIES EXPRESSLY DESCRIBED ABOVE. Some states do not allow limitations on how long an implied warranty lasts or exclusions or limitations of incidental or consequential damage, so the limitations and exclusions in this warranty may not apply to you. This warranty gives you specific legal rights, and you may have other rights which vary from state to state. This warranty applies to consumerowned installations only.
Rheem®, Rheem Preferred, Rheem Preferred Plus, and Rheem Preferred Platinum logos and product names are trademarks of Rheem Manufacturing Company, and are used under license. All rights reserved.
32

References

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