Honeywell MV876B1018 F76S User Manual

F76S Water Filters and

MV876B Automatic-Backwash Controls

PRODUCT DATA

FEATURES

F76

• Built-in backwash impeller provides effic ient cle anin g
with supply pressures as low as 22 psi.

• Increased flow capacity on 1/2 in. to 1-1/4 in. models
provides lower pressure drop.

• Robust backwash mechanism .

MV876B1018

(Bayonet fitting

for F76S)

• No shut-off or disassembly is required for cleaning.

• During backwash, the F76S continues to supply
filtered water without interruption throug h a secondary
screen.

• Memory ring indicates when the next manual
backwash is due.

MV876B1000

F76S

(for F76A,G)

APPLICATION

The F76S is a high flow capacity water filter used at point-of­entry (POE) to remove sedime nt and debris from residential or
commercial water systems. Used as a prefilter, the F76S
protects elements of the water system, including specialized
treatment devices such as taste/odor or reverse osmosis
(R/O) or other common fixtures and appliances. The flow,
filtering capacity, and ease of cleaning make the F76S the
ideal filter for the most demanding applications.

The MV876 Automatic-Backwash Control is available as an
accessory. This control is fitted to the drain valve and is
programmed by the user to automatically perform the back­wash function according to the desired interval.

MV876

• MV876B1018 bayonet fitting simplifies upgrade to
automatic b ackwash.

• 16 field-selectable backw ash intervals (from every fo ur
minutes to once every three months) on the MV876B
eliminate need for ex ternal timer.

• Connections for external control on the MV876B
provide for use in automated systems and differential
pressure control.

• MV876B can be turned manually to initiate backwash.

• Battery (AA) backup to insure c ompletio n of ba ckwash
cycle in spite of power loss.

Contents

Application ........................................................................ 1

Features ........................................................................... 1

Specifications ................................................................... 2

Ordering Information ........................................................ 2

Planning the Installation ................................................... 4

Installation ........................................................................ 5

Wiring ............................................................................... 8

Operation .......................................................................... 8

F76S Replacement Parts List ........................................... 10

F76A,G Replacement Parts List ....................................... 12

® U.S. Registered Trademark
Copyright © 1999 Honeywell Inc. • All Rights Reserved

62- 3015- 4

F76S WATER FILTERS AND MV876B AUTOMATIC-BACKWASH CONTROLS

SPECIFICATIONS

F76S:

Models:

Water filters with 100 micron screens and hose connections.

F76S1007: 1/2 in. sweat and NPT threaded tailpieces.
F76S1015: 3/4 in. sweat and NPT threaded tailpieces.
F76S1023: 1 in. sweat and NPT threaded tailpieces.
F76S1031: 1-1/4 in. sweat and NPT threaded tailpieces.
F76S1049: 1-1/2 in. NPT threaded tailpieces.
F76S1056: 2 in. NPT threaded tailpieces.

Dimensions:
Materials of Construction:

Body: Brass.
Screen: Stainless Steel.
Internal Construction: Ace tal Copo ly me r.
Seals: NBR.
Ball Valve: Brass with PTFE Seals.
Sump: Engineered Plastic.

NOTE: Bronze sump available.

Inlet Pressure:

Minimum: 22 psi (with unre stricted backwash discharge).
Maximum:

Plastic Sump: 232 psi.
Bronze Sump: 400 psi.

NOTE: Pressures above 200 psi require an inlet pressure

Differential:
Operating Pressure Drop:

(with clean screen).

Temperature (maximum):

Plastic Sump: 104°F (40°C).
Bronze Sump: 158°F (70°C).

Pipe Sizes (in in.):
Connections:

threaded or sweat.

See Fig. 1.

gauge with a range wider than the standard.

Maximum Recommended: 42 psi.

Maximum Recommended: 3 psi

1/2, 3/4, 1, 1-1/4, 1-1/2, and 2.

Union on inlet and outlet: External NPT

Capacity:
Screen Sizes:

Shipped with Device: 100 microns.
Available Kits: 20, 50, and 200 microns.

NOTE: 20 microns = 900 mesh (approximate).

See Table 1.

50 microns = 350 mesh (approximate).
100 microns = 175 mesh (approximate).
200 microns = 70 mesh (approximate).

MV876 Automatic-Backwash Controls :

Models:

MV876B1000: V alv e with 24 Vac mo tor and timer re places ball

valve drain port for auto matic backwa sh at preprogr ammed
intervals. 24V transformer not included. For use with
F76A,G Filters

MV876B1018: Bayonet mounted shaft of 24 Vac motor and

timer replaces ball valve manual control for automatic
backwash at preprogrammed intervals. 24V transformer
not included. For use with F76S Filters

Specifications:

Power: 4 VA.
Current: 170 mA.
Voltage: 24 Vac.
Cycle time: 20 seconds (approximate).
Timer: Variable. See Table 2.

Accessories (for F76S only except where noted):

0900747 Sump O Ring Kit (10 O rings) for 1/2 to 1-1/4 in. F76 S.
0900748 Sump O Ring Kit (10 O rings) for 1-1/ 2 to 2 in. F76S .
0901444 Gasket Package (10 gaskets) for any 1/2 in. and

3/4 in. F76.
0901445 Gasket Package (10 gaskets) for any 1 in. F76.
0901446 Gasket Package (10 gaskets) for any 1-1/4 in. F76.
0901447 Gasket Package (10 gaskets) for any 1-1/2 in. F76.
0901448 Gasket Package (10 gaskets) for any 2 in. F76.
AF11S-1A Screen i nsert (100 microns ) for 1/2 to 1-1/4 in. F76 S.
AF11S-112A Screen insert (100 microns) for 1-1/2 to 2 in. F76S.
AF11S-1B Screen insert (20 microns) for 1/2 to 1-1/4 in. F76S.
AF11S-1 12B Screen insert (20 microns) for 1-1/2 to 2 in. F76S.
AF11S-1C Screen insert (50 microns) for 1/2 to 1-1/4 in. F76S.

only

.

only

.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:

1.

Your local Home and Building Control Sales Office (check white pages of your phone directory).

2.

Home and Building Control Customer Logistics
Honeywell Inc., 1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386 [phone]
In Canada—Honeywell Limited/Honeywell Limitée, 155 Gordon Baker Road, North York, Ontario M2H 3N7.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

62-3015—4 2

F76S WATER FILTERS AND MV876B AUTOMATIC-BACKWASH CONTROLS

Accessories (continued):

AF11S-112C Screen insert (50 microns) for 1-1/2 to 2 in. F76S.
AF11S-1D Screen insert (200 microns) for 1/2 to 1-1/4 in. F76S.
AF11S-112D Screen insert (200 microns) for 1-1/2 to 2 in. F76S.
KF11S-1A Clear Plastic Filter Sump Kit for 1/2 to 1-1/4 in. F76S.
KF11S-112A Clear Plastic Filter Sump Kit for 1-1/2 to 2 in. F76S.
FT09RS-1A Bronze Filter Sump Kit for 1/2 to 1-1/4 in. F76S.
FT09RS-112A Bronze Filter Sump Kit for 1-1/2 to 2 in. F76S.
KH11S-1A Ball Valve Assembly for 1/2 to 2 in. F76S.
M76K-200 Pressure Gauge, 200 psi maximum.
M76K-400 Pressure Gauge, 400 psi maximum.
U76S5007 Sweat Tailpiece for any 1/2 in. F76.
U76S5015 Sweat Tailpiece for any 3/4 in. F76.
U76S5023 Sweat Tailpiece for any 1 in. F76.

100

150

50

200

0

Honeywell
Braukmann

H

h

SIZE

1/2 INCH 6-11/16 (170) 4-5/16 (110) 3-13/16 (97) 17-11/16 (449) 13-13/16 (350) 6.4 (2.9)

3/4 INCH 7 (178) 4-5/16 (110) 3-13/16 (97) 17-11/16 (449) 13-13/16 (350) 6.4 (2.9)

1 INCH 8-1/4 (209) 5-1/8 (130) 3-13/16 (97) 17-7/8 (453) 13-13/16 (350) 6.8 (3.1)

1-1/4 INCH 8-3/4 (222) 5-1/8 (130) 3-13/16 (97) 17-7/8 (453) 13-13/16 (350) 7.3 (3.3)

1-1/2 INCH 9-11/16 (246) 5-15/16 (150) 4-3/4 (119) 20-15/16 (532) 16-7/16 (417) 8.8 (4.0)

2 IINCH 10-1/2 (267) 5-15/16 (150) 4-3/4 (119) 20-15/16 (532) 16-7/16 (417) 10.6 (4.8)

1

L

U76S5031 Sweat Tailpiece for any 1-1/4 in. F76.
U76S5039 Sweat Tailpiece for any 1-1/2 in. F76.
U76S5047 Sweat Tailpiece for any 2 in. F76.
U76T1004 Threaded Tailpiece for any 1/2 in. F76.
U76T1014 Threaded Tailpiece for any 3/4 in. F76.
U76T1022 Threaded Tailpiece for any 1 in. F76.
U76T1030 Threaded Tailpiece for any 1-1/4 in. F76.
U76T1038 Threaded Tailpiece for any 1-1/2 in. F76.
U76T1046 Threaded Tailpiece for any 2 in. F76.
ZR10K-1 Sump Wrench for any 1 in. or 1-1/4 in. F76.
ZR10K-112 Sump Wrench for any 1-1/2 in. or 2 in. F76.
ZR10K-12 Sump Wrench for 1/2 in. and 3/4 in. F76A,G.
ZR10K-34 Sump Wrench for 1/2 in. and 3/4 in. F76S.

1 1 1 1

l

DH h

WEIGHT

2

D

l

L

1 DIMENSIONS IN INCHES AND (MILLIMETERS).
2 WEIGHT IN POUNDS AND (KILOGRAMS).

Fig. 1. F76S Dimensions.

Table 1. Capacity in Gallons Per Minute (gpm).

Pressure Drop

(psi) Across Filter

1/2 3/4 1 1-1/4 1-1/2 2

Pipe Size (in.)

1 8 11 18 20 26 30
2 12162528 36 42
3 14193135 44 51
4 16223640 51 59
5 18254045 57 66
15 32 43 70 78 99 114
Flow Volume for 15 sec backwash at 60 psi inlet

— 3.2 3.2 4.0 4.0 4.7 4.7

NOTE: C

is equal to capacity at 1 psi pressure drop.

v

M18084

Table 2. MV876B Timer Selections.

Program Value Backwash Interval

1 4 minutes
2 8 minutes
3 16 minutes
4 32 minutes
5 1 hour
6 2 hours
7 4 hours
8 8 hours
9 17 hours
10 34 hours
11 3 days
12 6 days
13 11 days
14 23 days
15 45 days
16 3 months

3 62-3015—4

F76S WATER FILTERS AND MV876B AUTOMATIC-BACKWASH CONTROLS

100

150

50

0

200

Honeywell
Braukma

nn

M16490

M16478

100

150

50

0

200

Honeywell
Braukmann

PLANNING THE INSTALLATION

The F76S should be siz ed based on the requ ired flow rate and
the resulting pressure drop ac ros s the fi lte r. As a guideline for
most applications, the F76S should be size d to avoid pressu re
drops exceeding 3 psi.

EXAMPLE:What size F76S is required to provide a flow

rate of 30 gpm? Reading across Table 1 at
3 psi pressure drop, a 1 in. filter can provide 31
gpm without exceeding 3 psi pressure drop.

100

150

50

200

0

Honeywell
Braukmann

An increased pressure drop across the filter results when
higher velocities are maintained to increase the capacity
through any given size filter. Severe pressure drops will be
encountered as capacity approaches that of the pipe size. To
ensure the backwash cycle operates properly and cleaning
action is not reduced, follow all recommendations in Fig. 2.
Refer to Fig. 2a for an ideal installation.

NOTE: All filter installations are different. The size, type, and

amount of dirt and debris and the flow rate must
always be considered when choosing a screen and
deciding to install multiple F76 Water Filters in parallel.

100

150

50

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0

Honeywell
Braukmann

M16488

Fig. 2a. Ideal F76S installation. A funnel

mounted directly under the backwash

port is the best installation layout.

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Honeywell
Braukmann

Fig. 2d. Ensure the bac kwash outl et is

M16491

not raised above the F76S. If the
backwash outlet must be raised ab ove
the F76S, increase inlet press ure 5 psi

for every 10 feet that it is raised.

M16489

Fig. 2b. Ensure the inlet pipe is not

downsized. Do not use 1/4 or 3/8 inch

tubing on 1/2 or 3/4 inch models.

100

150

50

200

0

Honeywell
Braukmann

M16492

Fig. 2e. Ensure the F76S is not used

with an undersized pump. An

undersized pump may not provide

proper pressure or flow.

Fig. 2c. Ensure the backwash outlet

pipe is not downsized, long, or

crimped. Instead, install a short

oversized pipe on the backwash outlet.

Do not use a low capacity solenoid

valve to automate the backwash cycle.

Fig. 2f. Ensure the F76S is not

installed in a bypass across a pump.

Fig. 2. Installation recommendations.

62-3015—44

F76S WATER FILTERS AND MV876B AUTOMATIC-BACKWASH CONTROLS

Commercial and Industrial Installations
(1-1/2 and 2 in. models)

Commercial and industrial installations have high flow
requirements. For proper operation, limit flow across the F76S
screen. For example, a two-inch pipe may hav e a 120 gpm flo w
at 12 fps linear velocity across a clean screen. High linear
velocity impacts dirt deeply in to the screen, maki ng it difficult to
backwash and causing the screen to plug up quickly. In these
situations, install multiple F76 filters in parallel. See Fig. 3.

3.

Install pressure gauge in the F76S center port (see Fig. 4).

IMPORTANT

When using an M V876, stop he re and insta ll the M V876.

4.

Ensure the F76S air vent is open.

5.

Slowly open the water supply valve.

6.

Once the F76S sump fills with water, close the air vent
and fully open the water supply valve.

1

100

150

50

200

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Honeywell
Braukmann

1

M17360

1

INLET
PIPE

1

ISOLATION VALVE.

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Braukmann

1

Fig. 3. Parallel installation of three F76S Water Filters.

Advantages of parallel installation:

• Increased cleaning ca pa cit y. Backwash interval is reduced.

• Elimination of system downtime. Can backwash one F76S

while the others maintain required flow.

Another consideration in commercial and industrial
installations is the backwash int erval. Becaus e of the high flo w
requirements, screens need cleaning on a regular basis. An
MV876 Automatic-Backwash Control can be installed to back­wash the F76S automatically.

50

0

Honeywell

Braukmann

100

200

150

100

150

50

200

0

Honeywell
Braukmann

M16480

INSTALLATION

CAUTION

Equipment Damage Hazard.
Excessive pressure or temperature can damage
the device.

Ensure water temperature and pressure are below
maximum ratings specified.

CAUTION

Equipment Damage Hazard.
Excessive heating can damage internal parts.

Before sweating, separate the tailpiece s and nuts from
the filter body.

F76S

When installing an F76S, use the following procedure:

1.

Shut off water supply by closing the w ater su ppl y val ve.

2.

Install the F76S in the w at er li ne wi th the arrow pointing
in the direction of water flow.

Fig. 4. Installing the F76S.

MV876

When adding an MV8 76 to an e xisting F76, the p rocedure can
vary depending on the F76 model.

Installation on an F76S

1.

Open the backwash outlet ball valve.

2.

Remove the backwash outlet handle.

3.

Install the MV876. See Fig. 5 and 6.
NOTE: When you rotate the MV876, it closes the

backwash outlet ball valve.

4.

Ensure the F76S air vent is open.

5.

Slowly open the water supply valve.

6.

Once the F76S sump fills with water, close the air vent
and fully open the water supply valve.

7.

Program the desired backwash interval by pushi ng the
program button until the desired interval number
appears in the display.

5 62-3015—4