Viega Eco Plus 8180US, Eco Plus 8108.1US Installation Manual

Viega Flushing Systems

Installation Manual

The global leader

in plumbing, heating

and pipe joining systems

Viega products are designed to be installed by licensed and trained plumbing and mechanical professionals
who are familiar with Viega products and their installation. Installation by non-professionals may void

Viega LLC’s warranty.

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Contents

1 Instructions for Use

1.1 Intended use ..................................................................4

1.2 Construction height .............................................................4

1.3 WC ceramic bowls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Overview

2.1 Model 8180US .................................................................5

2.1.1 Dimensions ...............................................................6

2.1.2 Flush volume .............................................................6

2.2 Model 8108.1US ...............................................................7

2.2.1 Dimensions ...............................................................8

2.2.2 Flush volume .............................................................8

3 Mounting

3.1 Framing and mounting WC carrier .................................................9

3.1.1 Required tools ............................................................9

3.2 Mounting WC carrier Model 8180US ...............................................9

3.2.1 Suitable walls .............................................................9

3.2.2 Steel stud mounting ........................................................9

3.2.3 Wood stud mounting ......................................................11

3.3 Mounting WC carrier Model 8108.1US ............................................12

3.3.1 Suitable walls ............................................................12

3.3.2 Steel stud mounting .......................................................12

3.3.3 Wood stud mounting ......................................................14

4 Bowl Installation .................................................................15

5 WaterSense Compatible Toilet Bowl Models

5.1 WaterSense EPA high efciency

Compatible wall-hung toilet bowl models ...........................................16

5.2 Other compatible wall-hung toilet bowl models ......................................17

6 Warranty ........................................................................19

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3

1 Instructions for Use

1.1 Intended use

• The Viega Eco Plus WC carrier is suitable for
mounting in wood or steel stud walls

• The WC carrier may only be mounted on even
wall surfaces

1.2 Construction height

• All references to construction height should be
measured from the nished oor. If measuring
from unnished oor, the thickness of the oor
covering should be added.

Model Part No Product description

8180US 52700 Viega Eco Plus WC carrier

2x6

For Visign flush plates, manual or touchless actuation
Flush actuation from the front, dual flush technology, adjustable ceramic height, barrier­free

Components

Powder-coated steel frame, concealed cistern, 3½" PP drain elbow, fernco coupling,
mounting hardware for 2x6 wood or metal studs, bowl mounting kit, trim guards

Cistern components

Pre-mounted angle stop with ½" NPT supply connection, fill valve, flush valve

Technical Data

sm. flush vol. factory setting approx. 0.8 gallon
sm. flush vol. setting approx. 0.8 - 1 gallon
full flush vol. factory setting approx. 1.6 gallon

810 8 .1U S 52710 Viega Eco Plus WC carrier

2x4

For Visign flush plates, manual or touchless actuation
Flush actuation from the front, dual flush technology, adjustable ceramic height, barrier­free

Components

Powder-coated steel frame, concealed cistern, 3½” PP drain elbow, fernco coupling,
mounting hardware for 2x4 wood or metal studs, bowl mounting kit, trim guards

Cistern components

Pre-mounted angle stop with ½" NPT supply connection, fill valve, flush valve

Technical Data

sm. flush vol. factory setting approx. 0.8 gallon
sm. flush vol. setting approx. 0.8 - 1 gallon
full flush vol. factory setting approx. 1.6 gallon

1.3 WC ceramic bowls

• The Viega WC carrier can only be used in
combination with compatible wall-hung bowls
(for threaded rods spacing of 7⅛" or 9" (180 or
230 mm)

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2.1 Model 8180US

2 Overview

8

7

1

6

5

4

1. Viega Flushing System WC carrier

2. Threaded rods for mounting ceramic bowls
Gauges for bore hole 7⅛" or 9"

(180 or 230mm)

3. Adjustable feet

4. Drain elbow

2

3

5. Water outlet to bowl

6. Concealed tank

7. Trim guard

8. Water supply ½" NP T

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5

2.1.1 Dimensions

19¼"

44½"

15⅜"

2½"

5¼"

2"

21"

26"

39⅞"

2.1.2 Flush volume

13"

7⅛"

9"

1⅞"

3⅝" - 5

2⅞"

5

16

/

Small flush volume Factory setting approx. 0.8 gpf (3 lpf)

Large flush volume Factory setting approx. 1.6 gpf (6 lpf)

6

Setting range approx. 0.8 - 1 gpf (3-4 lpf)

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2.2 Model 8108.1US

8

7

6

5

1

2

4

1. Viega Flushing System WC carrier

2. Threaded rods for mounting ceramic bowls
Gauges for bore hole 7⅛" or 9"

(180 or 230mm)

3. Adjustable feet

4. Drain elbow

3

5. Water outlet to bowl

6. Concealed tank

7. Trim guard

8. Water supply ½" NP T

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7

24½"

44½"

2.2.1 Dimensions

38⅜"

20⅝"

3⅜"

2"

29"

36"

1½"

13"

7⅛"

0 - 7⅞"

9"

1⅞"

2.2.2 Flush volume

Small flush volume Factory setting approx. 0.8 gpf (3 lpf)

Setting range approx. 0.8 - 1 gpf (3-4 lpf)

Large flush volume Factory setting approx. 1.6 gpf (6 lpf)

8

2⅞"

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3.1 Framing and mounting WC carrier

X1

90°

X2

½"

3.1.1 Required tools

The following tools are required for the mounting:

• Drill with ⅜", ¼" drill bit

• Ratchet with sockets ½", ⅝", ¾"

3.2 Mounting WC carrier Model 8180US

3.2.1 Suitable walls

The WC carrier can be mounted on the following walls:

• Standard or structural 2 x 6 steel studs, minimum 25 gauge

• Standard 2 x 6 wooden studs (actual 1½" x 5½"), 19" apart.

3.2.2 Steel stud mounting

X1

0

X2

1

3

6x

Ø ⅜"

2

6x

4

⅝"

3 Mounting

1. If necessary, adjust (pre­mounted) foot depth from 3"
(75 mm) to 2" (50 mm). Pull
the foot out and turn 90° if
necessary.

2. Determine construction height
based on desired bowl height,
and mark wall 39" above
surface of the finished floor.
Tighten bolts on feet with ⅝"

wrench.
x1 = 39"(1000 mm)
x2 = 0" (0 - 200 mm)
Note: Bowl height is
dependent on the bowl.
Review the bowl’s bolt height
requirements to ensure bowl
is positioned at the required
height.

3. Mark holes for floor supports.

4. Mark holes for side support at

studs. Align carrier to vertically
level with front of stud wall.

5. Drill ⅜" holes. Measurements
above finished floor height.
x1 = 8½" (216 mm)
x2 = 15½" (393 mm)
x3 = 42½" (1080 mm)

6. Secure WC carrier to floor
with supplied lag screws (½"
wrench).

X3

X2

X1

Ø ⅜"

5

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6

9

7. Attach WC carrier to the

6x

½"

¾"

studs using the supplied lag
screws or bolts for steel and
½" wrench. Align carrier to
vertically level with front of
stud wall.

8. Clip in drain elbow. Insert

click

and rotate threaded rods
inner holes for 7⅛" mounting
(180 mm), outer holes for 9"
mounting (230 mm). Attach
drain elbow to drain pipe with

7

8

supplied coupler.

9. Install mud guards on
activation, WC supply, WC
drain and threaded rods.

10. Connect to water supply.

11. 1" of mortar board (2 - ½"

boards are acceptable) or
green board suitable for tile.

9

11

10

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3.2.3 Wood stud mounting

6x

½"

1

6x

Ø ¼"

X3

X2

X1

Ø ¼"

1. Mark holes for floor supports.
Mark holes for side support at
studs. Align carrier to vertically
level with front of stud wall.
Drill ⅜" holes. Measurements
above finished floor height.

Don’t drill through the
complete wood stud.

x1 = 8½" (216 mm)
x2 = 15½" (393 mm)
x3 = 42½" (1080 mm)

2

2. Attach WC carrier to the
studs using the supplied lag
screws or bolts for steel and
½" wrench. Align carrier to
vertically level with front of stud
wall.

3. 1" of mortar board (2 - ½"
boards are acceptable) or
green board suitable for tile.

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11

3.3 Mounting WC carrier Model 8108.1US

X1

90°

X2

6x

½"

3.3.1 Suitable walls

The WC carrier can be mounted on the following
walls:

• Standard or structural 2 x 4 steel studs,
minimum 25 gauge

• Standard 2 x 4 wooden studs (actual 1½" x
3½"), 19" apart.

3.3.2 Steel stud mounting

X1

0

X2

1

2

⅝"

1.

If necessary, adjust (pre­mounted)
(75 mm) to 2" (50 mm). Pull
the foot out and turn 90° if
necessary.

2. Determine construction
height, based on desired
bowl height, and mark wall
39" above surface of the
finished floor. Tighten bolts
on feet with ⅝" wrench.

x1 = 39"(1000 mm)
x2 = 0" (0 - 200 mm)

3. Mark holes for floor supports.

4. Mark holes for side support

at studs. Align carrier to
vertically level with front of
stud wall.

5. Drill ⅜" holes. Measurements
above finished floor height.
x1 = 8½" (216 mm)
x2 = 15½" (393 mm)
x3 = 42½" (1080 mm)

foot depth from 3"

3

X3

X2

X1

5

12

4

6x

Ø ⅜"

Ø ⅜"

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6x

½"

¾"

6. Secure WC carrier to floor
with supplied lag screws (½"
wrench).

7. Attach WC carrier to the
studs using the supplied lag
screws or bolts for steel and
½" wrench. Align carrier to
vertically level with front of

click

7

8

stud wall.

8. Clip in drain elbow. Insert
and rotate threaded rods
inner holes for 7⅛" mounting
(180 mm), outer holes for 9"
mounting (230 mm). Attach
drain elbow to drain pipe with
supplied coupler.

9. Install mud guards on
activation, WC supply, WC
drain and threaded rods.

10. Connect to water supply.

11. 1" of mortar board (2 - ½"

boards are acceptable) or
green board suitable for tile.

9

11

10

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13

3.3.3 Wood stud mounting

6x

½"

X3

Ø ¼"

X2

X1

1

6x

Ø ¼"

1. Mark holes for floor supports.
Mark holes for side support
at studs. Align carrier to
vertically level with front of
stud wall.
Drill ⅜" holes. Measurements
above finished floor height.

Don’t drill through the
complete wood stud.

x1 = 8½" (216 mm)
x2 = 15½" (393 mm)

2

x3 = 42½" (1080 mm)

2. Attach WC carrier to the
studs using the supplied lag
screws or bolts for steel and
½" wrench. Align carrier to
vertically level with front of
stud wall.

3. 1" of mortar board (2 - ½"
boards are acceptable) or
green board suitable for tile.

3

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1 2

3

5

4 Bowl Installation

1. Insert pipes fully into water
outlet and drain connection.
Mark a line at the connection
or finished wall, whichever is
furthest out from the carrier.

2. Now fully insert the pipes,
with their gaskets, into the
bowl. Use a strait edge to
mark the pipe on the same
plane as the back edge of the
china bowl.

3. Measure the distance
between the two lines. This
is the distance that needs to
be cut from the end of the
pipe. Mark this distance from
the end of the pipe and cut to
correct length.

4. Debur the cut end inside and
out. File around the outside
edge of the pipe to create an
angle to help easily insert the
pipe.

5. Apply plumbers grease to
the gaskets on the pipe and

4

to the gaskets on the carrier.
Insert the pipes into the bowl
and slide bowl into place with
pipes and threaded rods.

6. Secure bowl tightly to wall.
Note: some connections may
be different depending on the
bowl manufacturer. Refer to
the manufacturer's installation
instructions for alternate bowl
mounting techniques. Caulk
around bowl if desired or if
recommended by the bowl
manufacturer.

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5 WaterSense Compatible Toilet Bowl Models

5.1 WaterSense EPA high efficiency
Compatible wall-hung toilet bowl models

Manufacturer Model Number Model Name

Duravit 22170900921

2226090092

22260900921

2533090092

2537090092

2542090092

2544090092

2550090092

22200900921

Kohler K-6299 Veil

Toto CT418FG Aquia

CT486FG Maris

Note: Tank model numbers may have suffix.
xx.x, where xx.x denotes shipping information.
*Consult toilet manufacturers for up-to-date model numbers and availability.
**Floor standing bowl

Duravit wall mounted toilet

Duravit wall mounted toilet

Duravit wall mounted toilet

Duravit wall mounted toilet

Duravit wall mounted toilet

Duravit wall mounted toilet

Duravit wall mounted toilet

Duravit wall mounted toilet

Duravit wall mounted toilet

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5.2 Other compatible wall-hung toilet bowl models

Manufacturer Model

Model Name

Number

Blu Bathworks LW6008 Coco

LW6020A Metrix

LW6030A Coco

Duravit 18209 1930 Series

nd

222009 2

Floor

017509 Bathroom_Foster

015609 Caro

221109 D-Code

222809 D-Code

253509 D-Code

254409 Darling New

254509 Darling New

255709 Darling New

018509 Duraplus

254709 Duraplus

253609 DuraStyle

253709 DuraStyle

253809 Durastyle

253909 DuraStyle

254009 DuraStyle

254109 DuraStyle

254209 DuraStyle

255109 DuraStyle

255209 DuraStyle

255909 DuraStyle

256209 DuraStyle

222109 Happy D.2

222209 Happy D.2

255009 Happy D.2

252809 ME by Stark

252909 ME by Stark

253009 ME by Stark

256109 P3 Comforts

221909 Puravida

Manufacturer Model

Model Name

Number

Duravit (cont.) 021009 Starck 1

253309 Starck 2

253409 Starck 2

220309 Starck 3 extra long

222509 Starck 3

222529 Starck 3

222609 Starck 3

222709 Starck 3 compact

222659 Starck 3

252709 Starck 3

221709 Vero

Duravit wall

mounted toilet

Seagram

DXV

D2557090092

D29001000.415

Icera C-6610 Clarity

C-2340 Metro

C-2370 Piano

Kallista P70361-00 Pléo

Lacava 5051WC Giulia

4278 Piazza

6058 Suave

Laufen 820978 Alessi One

820908 Alessi One

820808 Palomba

820338 Kartell

820439 Living

820688 LB3

820708 Palace

820963 Laufen Pro S

820950 Laufen Pro

820969 Laufen Pro

820661 HiJet

Mirabelle MIRED220WH Edenton

MIRWH220WH

MIRBD220WH

Winter Haven

Bradenton

Neo-Metro 8951 Euro-Urban

Contour

8957 Metaal

8952 miniLoo

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17

Manufacturer Model

Number

Porcher 47010-11 Solutions

ROCA 346768 Armani

346518 Dama Senso

346468 Giralda

346628 Hall

346568 Happening

Villeroy & Boch 5684-U1-01 Architectura

4688-UR-01 Architectura-

5627-U1-R1 La Belle

5628-U1-XX Memento

6661-U0-R1 Strada

5600-U0-XX Subway

5614-UR-XX Subway-Rimless

4609-UR-XX Subway-

6600-U1-XX Subway-D-shape

Model Name

Elongated

Elongated-Rimless

Note: Tank model numbers may have suffix.
xx.x, where xx.x denotes shipping information.
*Consult toilet manufacturers for up-to-date model
numbers and availability.
**Floor standing bowl

18

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6 Warranty

Viega provides the following limited warranties
on its ushing system products to the original
purchaser, installed in a residential application.
Flushing system products must be installed in
accordance with local plumbing and building
codes. Viega does not extend this warranty to (nor
imply) local code compliance.

A limited lifetime warranty is provided to the original
purchaser on the carrier and tank shell to be
free from manufacturing defects in materials and
workmanship under normal use.

A ten-year limited warranty is provided to the
original purchaser on the ushing mechanism (ll
and discharge valves) to be free from manufacturing
defects in materials and workmanship under normal
use.

A one year limited warranty is provided to the
original purchaser on the actuator plate.

At Viega’s discretion, any part that proves to be
defective in material and/or workmanship under
normal installation, use, and service will be repaired
or replaced.

To obtain warranty repair or replacement, the faulty
part or product is to be sent along with proof of
purchase (original Sales Receipt) from the original
consumer purchaser to:

Viega LLC
Attention: Quality Assurance
2211 Viega Ave., McPherson KS 67460
1-800-976-9819

This limited warranty is extended to the original
consumer owner, but does not cover installation
or other labor changes and shall not apply to any
products or parts of products which have been:

A) Repaired by unqualied persons or not

using original Viega spare parts or altered in
any manner unless previously authorized in
writing by Viega; or

B) Damaged as a result of misuse, negligence,

accident, or faulty installation or
maintenance; or

C) Installed or used in a manner contrary to

Viega’s printed instructions; or

D) Damaged by the effects of dirt, lime scale,

or aggressive cleaners.

E) Use of in-tank toilet cleaners will void the

warranty.

THIS IS THE EXCLUSIVE WARRANTY BY
VIEGA, WHICH DOES NOT MAKE ANY OTHER
WARRANTY OF ANY KIND. VIEGA SPECIFICALLY
EXCLUDES THE IMPLIED WARRANTY OF
MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.

This warranty excludes all industrial, commercial,
and business usage whose purchasers are
extended a one (1) year limited warranty from
the date of purchase, with all other terms of this
warranty. (See following for commercial products.)

Commercial Products: Viega warrants its products
installed in a commercial application to be free
from manufacturing defects for a period of one (1)
year from the date of acquisition by original owner.
Replaced products or parts are warranted only for
the period remaining under the initial warranty.

THIS WARRANTY IS LIMITED SOLELY TO
THE ABOVE AND THIS WARRANTY AND ANY
WARRANTIES IMPLIED BY STATE LAW WILL
APPLY ONLY FOR THE APPLICABLE PERIOD
SPECIFIED HEREIN. ALSO, VIEGA WILL NOT BE
LIABLE FOR ANY LOSS, DAMAGE, EXPENSE, OR
INCIDENTAL OR CONSEQUENTIAL DAMAGES OF
ANY KIND, WHETHER BASED ON WARRANTY,
CONTRACT, OR NEGLIGENCE AND ARISING
IN CONNECTION WITH SALE, USE, OR REPAIR
OF THE PRODUCT. SOME STATES DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF
CONSEQUENTIAL DAMAGE OR LIMITATIONS
ON HOW LONG AN IMPLIED WARRANTY LASTS,
SO THE ABOVE LIMITATIONS OR EXCLUSIONS
MAY NOT APPLY. THIS WARRANTY GIVES YOU
SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO
HAVE OTHER RIGHTS WHICH VARY FROM STATE
TO STATE. UNLESS OTHERWISE CONTRARY
TO STATE LAW GOVERNING THE PURCHASE,
VIEGA’S LIABILITY WILL NOT EXCEED THE
CONTRACT PRICE FOR THE PRODUCT CLAIMED
TO BE DEFECTIVE OR UNSUITABLE.

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19

Viega LLC

12303 Airport Way, Ste. 395
Broomeld, CO 80021
Phone: [phone]
Fax: [phone]
www.viega.us

This document subject to updates. For the most current Viega technical literature please visit www.viega.us.

©2018, Viega®, ProPress®, MegaPress®, SeaPress®, Smart Connect®, ManaBloc®,
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IM-FT 591480 0318