Installation Guide

6.4 Water Supply Connections
The main water supply shall be turned
off before making water supply
connections.
The MANABLOC water supply
connection uses a special 1" swivel
MANABLOC transition fitting which
seals with a rubber washer.
This connection is used on the cold
water supply and the hot water
supply/return lines. This connection to
the MANABLOC does not require any
form of thread sealant and none shall
be used.
DO NOT USE ANY FORM OF
THREAD SEALANT TO MAKE THIS
CONNECTION.
NOTE: Water Service connections to
adapt to any type of plumbing supply
materials are available. Consult the
Viega Product Catalog for a complete
listing of available connections.
1. Connect water service adapters to
water supply piping before
attaching the swivel fitting to the
MANABLOC (instructions included
with adapters.) Excessive force
from threaded fittings, or solvents
from solvent welding (PVC or
CPVC) will cause damage to the
MANABLOC.
Drill all holes in wood members for
water supply/return tubing BEFORE
mounting the MANABLOC.
2. When using male or female pipe
thread transition fittings, use only
Teflon® TAPE to seal pipe threads.
DO NOT use pipe dopes, thread
sealers, Teflon® pastes, etc.
3. If copper sweat fittings are used
anywhere in the MANABLOC water
Viega IM-PFMB 1007
23
s
upply line or water heater
supply/return lines, these fittings
must be soldered, cooled, and
flushed of any flux residue before
these lines are connected to the
MANABLOC.
Soldering creates a tremendous
amount of heat which could melt
the MANABLOC, and solder flux
contains strong acids and may also
contain petroleum products.
These compounds can attack the
plastic materials from which the
MANABLOC is made and cause
crazing, cracking and failure of the
MANABLOC, resulting in leaks and
water damage.
4. Ensure that the hot/cold supply
lines are connected to the correct
supply inlet/outlet on the
MANABLOC. Red valves designate
hot ports, blue valves designate
cold ports.
5. Supply lines shall enter and/or exit
the MANABLOC in a straight line. If
bending of the supply lines is
required, the tubing must be
anchored to a framing member to
isolate the bend stress from the
MANABLOC or use a
directional fitting.
6. After the supply tubing has been
connected to the transition fitting,
place the rubber washer onto the
swivel adapter, remove the plastic
protective cap from the
MANABLOC fitting and thread the
swivel nut onto the threaded male
adapter by hand. DO NOT CROSS
THREAD.
7. Tightening the swivel connections
on the inlet/outlet ports:
a. PEX Press, tighten the 1" swivel
nut hand tight only.
b. PEX Crimp, tighten the 1" swivel
nut hand-tight, then a quarter of
a turn with channel locks. DO
NOT OVERTIGHTEN. Excessive
force could damage the
MANABLOC. Repeat for all
remaining supply line
connections.
DO NOT ELECTRICALLY
GROUND TO THIS
SYSTEM.
Fitting Body
Rubber
Washer
Swivel
Nut
PEX Crimp
Fitting Body
Sealing
Element
Swivel
Nut
PEX Press
P