PEX Installation Manual
Table Of Contents
- 1 Introduction
- 2 Codes, Standards and Certifications
- 3 Viega PEX Installation Methods
- 4 Viega Manifolds
- 5 Viega PEX Press Fittings
- 6 Viega PEX Crimp Fittings
- 7 ViegaPEX Ultra Tubing
- 8 Viega FostaPEX Tubing
- 9 Viega PEX System Design and Sizing
- 10 System Sizing and Calculations
- 11 Water Service Installation
- 12 Installing the ManaBloc
- 13 Mounting the ManaBloc
- 14 Installing Manifold Distribution Lines
- 15 Installing the ViegaPEX Ultra Tubing System
- 16 Fastening the Viega PEX System
- 17 Installing Viega PEX Fittings
- 18 Pressure Testing Viega PEX Systems
- 19 System Disinfection
- 20 Warranty
IM-PF 724596 0416
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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.