PEX Installation

ManualsBrandsViega ManualsHeatingPEX Tubing - 1" Diameter - 100' Length - w/ Sleeve - Black

Table Of Contents

1 Introduction
- 1.1 Viega PEX solutions
- 1.2 Viega PEX system concepts
2 Codes, Standards and Certifications
- 2.1 Codes
- 2.2 Standards
- 2.3 Certifications
- 2.4 Specifying Viega PEX Systems
3 Viega PEX Installation Methods
- 3.1 Home run systems
- 3.2 Combination systems
- 3.3 Branch and tee
4 Viega Manifolds
- 4.1 Viega manifold markings
5 Viega PEX Press Fittings
- 5.1 Viega PEX Press bronze
- 5.2 Viega PEX Press polymer
  - 5.2.1 Viega Smart Connect feature
- 5.3 Viega PEX Press fitting markings
- 5.4 PEX Press tools
  - 5.4.1 PEX Press hand tools
  - 5.4.2 PEX Press power tools
- 5.5 Making a Viega PEX Press connection with hand tool
6 Viega PEX Crimp Fittings
- 6.1 Viega PEX Crimp Eco Brass fittings
- 6.2 Viega PEX Crimp PolyAlloy fittings
- 6.3 Viega PEX Crimp fitting markings
- 6.4 The Viega PEX Crimp hand tools
- 6.5 Making a Viega PEX Crimp connection
7 ViegaPEX Ultra Tubing
- 7.1 ViegaPEX Ultra properties and performance
- 7.2 Tubing markings
8 Viega FostaPEX Tubing
- 8.1 FostaPEX properties and performance
- 8.2 Tubing markings
9 Viega PEX System Design and Sizing
- 9.1 ManaBloc
  - 9.1.1 Supply and distribution line sizing
  - 9.1.2 Plumbing code compliance (home run / parallel systems)
- 9.2 Combination systems
- 9.3 Branch-and-tee systems
10 System Sizing and Calculations
- 10.1 General
- 10.2 Viega PEX fittings
  - 10.2.1 Viega PEX Press friction loss — equivalent feet of SDR9 PEX tubing
  - 10.2.2 Viega PEX Crimp friction loss — equivalent feet of SDR9 PEX tubing
- 10.3 ViegaPEX Ultra tubing
11 Water Service Installation
- 11.1 Below grade and service line
- 11.2 Foundation penetration
- 11.3 Direct burial of Viega PEX fittings
- 11.4 Concrete
- 11.5 Installing under the slab
- 11.6 Protecting ViegaPEX Ultra tubing
12 Installing the ManaBloc
- 12.1 Overview and carton contents
- 12.2 Location
- 12.3 Draining the ManaBloc unit
- 12.4 Draining the ManaBloc system
- 12.5 Multiple ManaBloc installations
13 Mounting the ManaBloc
- 13.1 Mounting the ManaBloc between studs
- 13.2 Mounting the ManaBloc between studs without use of mounting straps
- 13.3 Mounting the ManaBloc - surface mount
- 13.4 Mounting the MiniBloc
- 13.5 Mounting Viega PEX Press and PEX Crimp Polymer manifolds
14 Installing Manifold Distribution Lines
- 14.1 Installing manifold distribution lines
- 14.2 Valve operation
- 14.3 Connecting distribution lines to the ManaBloc
  - 14.3.1 Port connections
- 14.4 Connecting distribution lines to fixtures
- 14.5 Water supply connections
15 Installing the ViegaPEX Ultra Tubing System
- 15.1 Handling ViegaPEX Ultra tubing
- 15.2 Uncoiling ViegaPEX Ultra tubing
- 15.3 Bending ViegaPEX Ultra tubing
- 15.4 Removing Viega PEX connections
- 15.5 Repairs
- 15.6 Freezing
- 15.7 Water heaters
- 15.8 Heaters, flues, vents and recessed lights
16 Fastening the Viega PEX System
- 16.1 Wood frame construction
- 16.2 Steel construction
- 16.3 Supporting ViegaPEX Ultra tubing
- 16.4 Noise and water hammer in PEX systems
- 16.5 Shower valves
- 16.6 Electrical grounding
- 16.7 Expanding foams
- 16.8 Fire Stop compounds
- 16.9 Tubing expansion
  - 16.9.1 Calculating expansion loops and offsets
- 16.10 Domestic hot water circulating systems
17 Installing Viega PEX Fittings
- 17.1 Stub out options
- 17.2 Copper connections
  - 17.2.1 Soldering Zero Lead alloy PEX fittings
- 17.3 Threaded connections
- 17.4 Valves
18 Pressure Testing Viega PEX Systems
- 18.1 General
- 18.2 Air testing
- 18.3 Leak detection
19 System Disinfection
- 19.1 General
- 19.2 California flushing requirements
20 Warranty

IM-PF 724596 0416

13.3

Mounting the ManaBloc - surface mount

1. A suitable base for the ManaBloc can be

constructed from a section of ½" or thicker

plywood that is a minimum 22½" wide and slightly

longer than the overall length of the ManaBloc.

2. Securely attach a length of 2x4, or other suitable

framing material with a thickness of 1½" and about

3½" wide on the left and right sides of the mounting

base running the full length of the ManaBloc. (See

illustration below.) The 2x4s will be used to secure the

distribution lines at the correct height as they exit the

ManaBloc. (Support clamps not to exceed 6" spacing

from end of ports.)

4"- 6"

90°

3. Attach the mounting base to the structure in a

suitable location. (See “12.2 Location” on Page

27.) The base should be mounted so the top of

the ManaBloc is between four feet and six feet from

the oor but may be at any height provided that the

height maintains accessibility to all the ports on the

ManaBloc.

4. The mounting base must be rmly attached to a

structure solid enough to support, at a minimum,

the weight of the ManaBloc lled with water. The

base should be square and level.

22½"

Longer

than

ManaBloc

2x42x4

22½"

Longer

than

ManaBloc

2x42x4

MANABLOC

5. Center the ManaBloc on the base both vertically and

horizontally, as shown here. Attach the ManaBloc to

the mounting base with four ½" or longer drywall or

wood screws through the holes in the plastic brackets

on the ManaBloc. DO NOT OVERTIGHTEN.

6. As the distribution lines are connected to the

ManaBloc (see “14.3 Connecting distribution lines

to the ManaBloc” on Page 38), ensure that the

tubing exits the unit at a 90° angle to the center

line of the ManaBloc so as not to induce bending

stress on the ManaBloc.

7. When attaching the distribution line tubing to the

2x4 supports, be sure to use appropriately sized

Viega tubing clamps. (For example, use part

number 52000 for ⅜" tubing and part number

52020 for ½" tubing.)

Use one clamp per tube to ensure that the tubing

is held securely. Position clamps NO FARTHER

than 6" from the end of the port. DO NOT pull

tubing tight.