PEX Installation Manual

ManualsBrandsViega ManualsHeatingPEX Press Adapter - 1/2" Press x SVC - Bronze

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

b. When the ManaBloc is mounted beside the

water heater and is connected with tubing

incorporating a horizontal ow, there shall be at

least 18" of developed tube length. Mounting

the ManaBloc within eight feet of developed

tube length of the water heater will minimize

delivery time of hot water to individual xtures.

The ManaBloc may be mounted closer than

12" to the hot water source (tank) if it does not

exceed the minimum allowable vertical and

horizontal spacing outlined in this section.

c. Install the unit in an area that is centrally located

to the most dense concentration of served

xtures. Some applications will require that the

ManaBloc be mounted farther than eight feet

from the hot water source. See design factors

for installing a parallel system, “3.1 Home

run systems” on Page 8, for suggestions

on reducing hot water delivery times in these

instances.

6. DO NOT install the ManaBloc within a continuously

recirculating hot water plumbing loop. The

ManaBloc, however, may be supplied from a

recirculating hot water loop. Refer to “Section 16.10

Domestic hot water circulating systems” on Page

54 for recommended piping options.

ManaBloc Locations

18” TO 8’ TOTAL

DEVELOPED TUBE LENGTH

36” MIN

ManaBloc Supply Piping Options

7. Position the ManaBloc so that it can be securely

fastened through the holes provided in the mounting

brackets. The mounting surface should be as at as

possible so as not to induce any twisting or bending

forces on the unit. The mounting straps (part

number 45716) simplify mounting between studs on

16" centers.