Install Instructions

Installing the ManaBloc
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IM-PF 724596 1021 PureFlow Water System (EN)
BEFORE INSTALLING THE MANABLOC, MAKE SURE THE LOCATION
REQUIREMENTS HAVE BEEN MET.
Take extra caution when handling the ManaBloc in temperatures that
are below freezing. Tubing penetrations may require sleeving or the
installation of an insulator.
1. UNDER NO CIRCUMSTANCES shall the ManaBloc be located in a
permanently covered area (behind sheetrock, plywood, paneling)
or where freezing temperatures may occur. Do not install in direct
sunlight. THE MANABLOC MUST BE ACCESSIBLE and there shall be
su󶈷cient clear area in front of the ManaBloc to provide access.
2. When local code allows, mount the ManaBloc unit in a 󶈵re-rated wall,
provided an access door meeting the same rating requirements as the
wall is installed over the access opening.
3. When installing the ManaBloc in a location other than between studs,
provisions must be made to support the tubing runs as they exit the
ManaBloc (see "Bending PureFlow PEX Tubing" on page 59).
4. Any installed cover panel shall allow access to the ManaBloc and its
mounting screws, the port valves, distribution line connections and
supply line connections.
5. To maximize potential water and energy savings, the ManaBloc should
be mounted as close as is practical to the hot water source, taking the
following into consideration:
a. When the ManaBloc is mounted above the water heater, there
shall be a minimum of 36" of connecting tubing between the water
heater and the ManaBloc to reduce the chance of heat stacking.
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 "6.4.2.1 Design Factors for Home Run System"
on page 31 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 "Domestic Hot Water Circulating
Systems" on page 71 for recommended 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.
18" to 8' total
developed tube length
36" min.