Install Instructions

Installing the ManaBloc
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IM-PF 724596 1021 PureFlow Water System (EN)
8.3 Draining the ManaBloc Unit
If the ManaBloc system has been 󶈵lled with water and there exists the
possibility that the ambient temperature will drop close to or below 32° F
(0° C), the ManaBloc unit MUST be drained to prevent irreparable damage.
The process of draining involves loosening and removal of one or more
supply line connections and two distribution lines from the ManaBloc.
The procedure described above will leave a small amount
of water in the ManaBloc unit and, depending on the
installation, may leave some or most of the water in the
distribution lines. This remaining water should not cause
damage to the manifold unit or to the PEX distribution lines
in the event of a freeze. However, for complete assurance
that freeze damage will not occur, perform the following
additional steps.
Depending on the installation, some supply connections
may be capped. If that is the case, remove the cap(s) as
instructed below.
1. Turn o󶈴 all water supply(s) feeding the ManaBloc. Open both sides of
all 󶈵xtures served by the manifold and leave the 󶈵xtures open during
draining. For each port of the ManaBloc where there is a distribution
line connected, make sure the port valve is in the open position.
2. Loosen and remove the bottom supply connection(s) (or cap(s)) and
the lowest pair of hot and cold distribution lines.
3. As the connections are removed, most of the water contained in the
ManaBloc main bores and some of the water in the distribution lines
should purge from the system.
4. Allow to drain until no water purges.
5. Reattach the supply line(s) or cap(s) and the distribution lines.
Tighten the supply connections according to the instructions in
"10.3 Connecting Distribution Lines to the ManaBloc" on page 53.
When reconnecting the distribution lines, DO NOT overtighten the
connections. These only need to be hand-tight.