Viega Eco Plus 8180US User manual

Viega Flushing Systems
Installation Manual
The global leader
in plumbing, heating
and pipe joining systems

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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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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.
1 Instructions for Use
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)
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, barrier-
free
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 8.1US 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, barrier-
free
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

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2 Overview
2.1 Model 8180US
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
5. Water outlet to bowl
6. Concealed tank
7. Trim guard
8. Water supply ½" NPT
8
2
6
7
3
1
4
5

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2.1.1 Dimensions
19¼"
15⅜"
7⅛"1⅞"2⅞"
3⅝" - 55
/
16
9"
44½"
2½"
2"
21" 26"
39⅞"
13"
5¼"
2.1.2 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)

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2.2 Model 8108.1US
8
2
6
7
3
1
4
5
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
5. Water outlet to bowl
6. Concealed tank
7. Trim guard
8. Water supply ½" NPT

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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)
24½"
3⅜"
20⅝"
44½"
38⅜"
29"
36"
2"
1½"
13"
0 - 7⅞"
7⅛"
9" 1⅞"
2⅞"
2.2.1 Dimensions

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3 Mounting
3.1 Framing and mounting WC carrier
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
90°
X2
1
X1
X3
X2
Ø ⅜"
6x
Ø ⅜"
½"
⅝"
X2
0
X1
2
3
5
6x
4
6
1. If necessary, adjust (pre-
mounted) 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).

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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
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.
6x
½"
7
10
9
click
¾"
8
11