Watts 3150 User Manual

Model 3150 Downflow

Service Manual

IMPORTANT: Fill in pertinent information on page 2 for future reference.

MODEL 3150 Downflow

Job Specification Sheet

• JOB NO. __________________________________________________________

• *MODEL NO. ______________________________________________________

• WATER TEST______________________________________________________

• CAPACITY PER UNIT _______________________________________________

• MINERAL TANK SIZE DIA.________HEIGHT_________

• BRINE TANK SIZE &
SALT SETTING PER REGENERATION: _________________________________

* CONTROL VALVE SPECIFICATIONS

1) Type of Timer (see pages 16, 17, & 18)
A) 7 day or 12 day
B) * 1,250 to 21,250 gallon meter or

* 6,250 to 106,250 gallon meter or
* Other ___________________________________________________

C) Meter Wiring Package

1) System #4 - 1 tank; 1 meter; immediate or delayed regeneration

2) System #5 - 2 tanks; 2 meters; interlock

3) System #6 - 2 tanks; 1 meter; series regeneration

4) System #7 - 2 tanks; 1 meter; alternator

2) Timer Program Settings
A) Backwash _________________________________ min.
B) Brine & Slow Rinse _________________________ min.
C) Rapid Rinse _______________________________min.
D) Brine Tank Refill ____________________________min.

3) Drain Line Flow Controller________________________gpm

4) Brine Line Flow Controller________________________gpm

5) Injector Size # _________________________________

6) Service Valve Operation Units (SVO)
Size of Service Valve ___________________________

Page 2

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MODEL 3150 Downflow

General Commercial Pre-Installation Check List

WATER PRESSURE: A minimum of 25 pounds of water pressure is required for regeneration valve to operate
effectively.

ELECTRICAL FACILITIES: A continuous 115 volt, 60 Hertz current supply is required. (Other voltages available.)
Make certain the current supply is always hot and cannot be turned off with another switch.

EXISTING PLUMBING: Condition of existing plumbing should be free from lime and iron buildup. Piping that is built up
heavily with lime and/or iron should be replaced. If piping is clogged with iron, a separate iron filter unit should be
installed ahead of the water softener.

LOCATION OF SOFTENER AND DRAIN: The softener should be located close to a drain.
BY-PASS VALVES: Always provide for the installation of a by-pass valve.
CAUTION: Water pressure is not to exceed 120 p.s.i., water temperature is not to exceed 100˚F, and the unit cannot be

subjected to freezing conditions.

INSTALLATION INSTRUCTIONS

1. Place the softener tank where you want to install the unit making sure the unit is level and on a firm base.
(Maximum 7 feet apart for twin units.)

2. All plumbing should be done in accordance with local plumbing codes. The pipe size for the drain line should be the
same size as the drain line flow control connection. Water meters are to be installed on soft water outlets. Twin
units with (1) one meter shall be installed on common soft water outlet of units.

3. Make sure that the floor is clean beneath the salt storage tank and that it is level.

4. Place approximately 1″ of water above the grid plate (if used) in your salt tank Salt may be placed in the unit at this
time.

5. Place in by-pass position. Turn on the main water supply. Open a cold soft water tap nearby and let run a few
minutes or until the system is free from foreign material (usually solder) that may have resulted from the
installation.

6. Place the by-pass in service position.

7. Manually index the softener control into “service” position and let water flow into the mineral tank. When water flow
stops, close inlet valve,place control in “backwash” position to relieve head of air, then gradually open inlet valve to
purge remaining air in tank. Return control to “service” position.

8. Electrical: All electrical connections must be connected according to codes. Use electrical conduit if applicable.
Plug into power supply.

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Page 3

MODEL 3150 Downflow

Water Conditioner Flow Diagrams

1 SERVICE POSITION

INLET

INLET

TOP OF
TANK

Hard water enters at valve inlet — flows thru valve to the top of tank — down thru mineral to the
bottom distributor. Conditioned water flows to the valve, around the piston and out the outlet.

OUTLET

DRAIN

TO
BRINE
TANK

BOTTOM OF TANK

2 BACKWASH POSITION

OUTLET

INLET

DRAIN

INLET

TOP OF
TANK

BOTTOM OF TANK

Hard water enters at valve inlet — flows thru valve to the bottom of
tank — up thru mineral to top of tank, around the piston and out
the drain. Hard water is also available at valve outlet.

TO
BRINE
TANK

3 BRINE AND SLOW RINSE POSITION

OUTLET

INLET

DRAIN

INLET

TOP OF
TANK

BOTTOM OF TANK

Hard water enters at valve inlet — flows thru injector nozzle and
throat to draw brine from the brine tank — brine flows thru valve to
the top of tank — down thru mineral to bottom distributor — back
to the valve, around the piston and out the drain. Flow thru injec­tors continues for slow rinse for remainder of cycle. Hard water is
also available at valve outlet.

TO
BRINE
TANK

Page 4

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MODEL 3150 Downflow

Water Conditioner Flow Diagrams (Cont’d.)

4 RAPID RINSE POSITION

INLET

INLET

TOP OF
TANK

Hard water enters at valveinlet — flows thru valve to the top of tank — down thru mineral to bottom distributor —
back to the valve, around the piston and out the drain. Hard water is also available at valve outlet.

OUTLET

DRAIN

TO
BRINE
TANK

BOTTOM OF TANK

5 BRINE TANK REFILL POSITION

OUTLET

INLET

DRAIN

INLET

TOP OF
TANK

BOTTOM OF TANK

Hard water enters at valve inlet — flows thru nozzle and thru throat to brine valve to refill the brine tank.
Conditioned water is also available at valve outlet during this cycle.

TO
BRINE
TANK

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Page 5

MODEL 3150 Downflow

Control Valve
(see opposite page for parts list)

6

7

5

12

9

7

8

9

4

5

6

2

4

3

2

1

10

2

3

11

Page 6

3

13

14

15

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MODEL 3150 Downflow

Control Valve
Parts List

Item No. Quantity Part No. Description

1. . . . . . . . . . . 1 . . . . . . . . . . . 15114 . . . . . . . . . . . . . . . Valve Body

2. . . . . . . . . . . 8 . . . . . . . . . . . 11720 . . . . . . . . . . . . . . . Seal

3. . . . . . . . . . . 5 . . . . . . . . . . . 10369 . . . . . . . . . . . . . . . Spacer - Port

5 . . . . . . . . . . . 16141 . . . . . . . . . . . . . . . Spacer - Port Hot Water

4. . . . . . . . . . . 2 . . . . . . . . . . . 10368 . . . . . . . . . . . . . . . Spacer

2 . . . . . . . . . . . 10368-01. . . . . . . . . . . . . Spacer - Hot Water

5. . . . . . . . . . . 1 . . . . . . . . . . . 16130 . . . . . . . . . . . . . . . Piston

1 . . . . . . . . . . . 19611-01. . . . . . . . . . . . . Piston Assy. NHWB-P

6. . . . . . . . . . . 1 . . . . . . . . . . . 14818 . . . . . . . . . . . . . . . Clip - Piston Rod

7. . . . . . . . . . . 1 . . . . . . . . . . . 15125 . . . . . . . . . . . . . . . Piston Rod

1 . . . . . . . . . . . 19708 . . . . . . . . . . . . . . . Piston Rod, NHWB-P

8. . . . . . . . . . . 1 . . . . . . . . . . . 14922 . . . . . . . . . . . . . . . O-Ring - 035

9. . . . . . . . . . . 1 . . . . . . . . . . . 16398-01 . . . . . . . . . . . . . End Plug Assembly

10 . . . . . . . . . . 1 . . . . . . . . . . . 15112 . . . . . . . . . . . . . . . Seal

11 . . . . . . . . . . 1 . . . . . . . . . . . 17407 . . . . . . . . . . . . . . . Adapter - Side Mount

12 . . . . . . . . . . 2 . . . . . . . . . . . 40118 . . . . . . . . . . . . . . . Screw - Hex Hd.

Options

13 . . . . . . . . . . 1 . . . . . . . . . . . 15117-01 . . . . . . . . . . . . . Adapter - Top Mount 4″ - 8 Th’d.

14 . . . . . . . . . . 1 . . . . . . . . . . . 15247 . . . . . . . . . . . . . . . O-Ring - 229 (Dist.)

15 . . . . . . . . . . 1 . . . . . . . . . . . 13575 . . . . . . . . . . . . . . . O-Ring - 240 (Tank)

1 . . . . . . . . . . . 15210 . . . . . . . . . . . . . . . O-Ring (Park Tank)

16 . . . . . . . . . . 1 . . . . . . . . . . . 19608-20 . . . . . . . . . . . . . Disperser, Upper (Not shown)

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Page 7

MODEL 3150 Downflow

Control Drive Assembly
(see opposite page for parts list)

1

2

3

4

5

7

6

8

10

11

9

43

42

16

41

40

39

38

37

36

35

34

33

32

13

14

15

16

17

18

19

20

21

22

23

24

25

26

31

30

29

28A

27

28B

Page 8

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MODEL 3150 Downflow

Control Drive Assembly
Parts List

Item No. Quantity Part No. Description

1 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 19304-00 . . . . . . . . . . . . . . . . . Back Plate -01, -02

2 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 15120-01 . . . . . . . . . . . . . . . . . Bracket - Motor Mounting

3 . . . . . . . . . . . . .2 . . . . . . . . . . . . . . 16346 . . . . . . . . . . . . . . . . . . . Nut - 5/16-18

4 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16044 . . . . . . . . . . . . . . . . . . . Drive Motor - 11S V. 60 Hz.

5 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 17797 . . . . . . . . . . . . . . . . . . . Bracket - Switch Mounting

6 . . . . . . . . . . . . .4 . . . . . . . . . . . . . . 10302 . . . . . . . . . . . . . . . . . . . Insulator - Switch

7 . . . . . . . . . . . . .3 . . . . . . . . . . . . . . 10218 . . . . . . . . . . . . . . . . . . . Switch

8 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 17845-03 . . . . . . . . . . . . . . . . . Pin, Hinge

9 . . . . . . . . . . . . .4 . . . . . . . . . . . . . . 11235 . . . . . . . . . . . . . . . . . . . Nut, 1/4-20

10 . . . . . . . . . . . . .2 . . . . . . . . . . . . . . 13365 . . . . . . . . . . . . . . . . . . . Lockwasher

11 . . . . . . . . . . . . .2 . . . . . . . . . . . . . . 12624 . . . . . . . . . . . . . . . . . . . Screw - Pan Hd.

13 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16053 . . . . . . . . . . . . . . . . . . . Bracket - Brine Side

14 . . . . . . . . . . . . .2 . . . . . . . . . . . . . . 40133 . . . . . . . . . . . . . . . . . . . Screw - Round Hd.

15 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 15226-❊ . . . . . . . . . . . . . . . . . Terminal Block

16 . . . . . . . . . . . . .2 . . . . . . . . . . . . . . 16052 . . . . . . . . . . . . . . . . . . . Bushing

17 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16059 . . . . . . . . . . . . . . . . . . . Washer

18 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16051 . . . . . . . . . . . . . . . . . . . Retaining Ring - Bowed “E”

•19 . . . . . . . . . . . . .2 . . . . . . . . . . . . . . 10300 . . . . . . . . . . . . . . . . . . . Screw - Hex Hd. Thread Cutting

•20 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 19317 . . . . . . . . . . . . . . . . . . . Light Bracket

21 . . . . . . . . . . . . .4 . . . . . . . . . . . . . . 10231 . . . . . . . . . . . . . . . . . . . Screw - Hex Hd.

22 . . . . . . . . . . . . .2 . . . . . . . . . . . . . . 17567 . . . . . . . . . . . . . . . . . . . Screw - Hex Hd.

23 . . . . . . . . . . . . .2 . . . . . . . . . . . . . . 12288 . . . . . . . . . . . . . . . . . . . Washer, Lock, #8 Internal

24 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16494-05 . . . . . . . . . . . . . . . . . Cam Assembly - Service After RR

1. . . . . . . . . . . . . . 16494-03. . . . . . . . . . . . . . . . . Cam Assembly - Service After Brine Refill

25 . . . . . . . . . . . . .4 . . . . . . . . . . . . . . 11224 . . . . . . . . . . . . . . . . . . . Screw - Hex Hd.

•26 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 19319 . . . . . . . . . . . . . . . . . . . Lamp Window

27 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 18744 . . . . . . . . . . . . . . . . . . . Screw

28A . . . . . . . . . . . .1 . . . . . . . . . . . . . . 19277-020 . . . . . . . . . . . . . . . . Cover, Black

•28B . . . . . . . . . . . .1. . . . . . . . . . . . . . 19277-021. . . . . . . . . . . . . . . . Cover, Lamp Window

29 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 18615-02 . . . . . . . . . . . . . . . . . Seal, Window

30 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 18745 . . . . . . . . . . . . . . . . . . . Window

31 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 18716-03 . . . . . . . . . . . . . . . . . Seal, Cover

32 . . . . . . . . . . . . .4 . . . . . . . . . . . . . . 19203 . . . . . . . . . . . . . . . . . . . Screw

33 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16046 . . . . . . . . . . . . . . . . . . . Drive Gear

34 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16050 . . . . . . . . . . . . . . . . . . . Retaining Ring

35 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 11774 . . . . . . . . . . . . . . . . . . . Retaining Ring “E”

36 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16047 . . . . . . . . . . . . . . . . . . . Drive Link

37 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 11709 . . . . . . . . . . . . . . . . . . . Pin - Drive Link

38 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16048 . . . . . . . . . . . . . . . . . . . Bearing - Drive Link

39 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 11898 . . . . . . . . . . . . . . . . . . . Clip

40 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16045 . . . . . . . . . . . . . . . . . . . Drive Pinion

41 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 11381 . . . . . . . . . . . . . . . . . . . Roll Pin

42 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 11080 . . . . . . . . . . . . . . . . . . . Screw - Flat Hd.

43 . . . . . . . . . . . . .3 . . . . . . . . . . . . . . 10872 . . . . . . . . . . . . . . . . . . . Screw - Hex Hd.

44 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Timer - (not shown) [3200, 3210, 3200E, 3200ET]

45 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 40084-07 . . . . . . . . . . . . . . . . . Power Cord, 120V, 7FT (not shown)

1. . . . . . . . . . . . . . 40084-12. . . . . . . . . . . . . . . . . Power Cord, 120V, 12FT (not shown)

1. . . . . . . . . . . . . . 40085-07. . . . . . . . . . . . . . . . . Power Cord, 240V, 7FF (not shown)

46 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 17967 . . . . . . . . . . . . . . . . . . . Strain Relief (not shown)

47 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16430 . . . . . . . . . . . . . . . . . . . Harness (not shown)

48 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 19691 . . . . . . . . . . . . . . . . . . . Hole Plug - 3/4 Dia. (not shown)

49 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 19591 . . . . . . . . . . . . . . . . . . . Hole Plug - 7/8 Dia. (not shown)

50 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16427-04 . . . . . . . . . . . . . . . . . Motor Lead Wire (not shown)

51 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16384 . . . . . . . . . . . . . . . . . . . Wire Harness (not shown)

52 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 14924 . . . . . . . . . . . . . . . . . . . Strain Relief (not shown)

53 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 15513 . . . . . . . . . . . . . . . . . . . Meter Cable (not shown)

54 . . . . . . . . . . . . .2 . . . . . . . . . . . . . . 15250 . . . . . . . . . . . . . . . . . . . Label - Terminal Strip (not shown)

55 . . . . . . . . . . . . .1 . . . . . . . . . . . . . . 16827 . . . . . . . . . . . . . . . . . . . Cable Guide Assembly (not shown)

❊ Specify number of terminals

• Optional Parts for Lamp Package

16500 . . . . . . . . . . . . . . . . . . . Drive Motor - 220 V. 50 Hz.

16501 . . . . . . . . . . . . . . . . . . . Drive Motor - 24 V. 60 Hz.

Printed in U.S.A.

Page 9

MODEL 3150 Downflow

1800 Series Brine System Assembly
(see opposite page for parts list)

16

15

6

5
4

2

1

6

8

13

12

11

14

3

15

10

6

9

6

17

7

4

6

Page 10

Printed in U.S.A.