THERMO 2000 VENTUM, Installation And Operation Manual, Page: 9 / 34

VENTUM HYDRONIC AIR-HANDLER Installation and Operation Manual (Revised: June 2021)
9
POSITIONING
Figures 4 and 5 represent installation options for
the VenTum hydronic air-handler. It can be
installed directly on the floor, on a plenum, or
hung from the ceiling. It is the installer's
responsibility to properly secure the VenTum
hydronic air-handler to the ceiling if this type of
installation is required.
The supports for the ceiling must be provided on
the site and selected according to the
dimensions and mass of the unit.
Figure 4 : Possible hydronic air-handler configurations
HYDRONIC AIR-HANDLER
MECHANICAL INSTALLATION
Heating coil
The plumbing connections on the coil of the
VenTum unit are ¾” diameter plumbing copper
tubing. If the copper tubing is to be connected to
a steel pipe, it is recommended to use a dielectric
connection to prevent galvanic corrosion.
A drain valve is required at the coil outlet so that
it can be drained in the event of work being done
on the unit. It is essential to have a way to purge
the air from the system and to be able to drain
water from it when necessary.
A check valve is included in the pump connection
leading to the radiator.
The maximum water flow through the coil should
not exceed 10 GPM. In a standard installation,
the flow rate obtained by the pump included in the
unit should be approximately 5 GPM. Table 4
presents an approximate maximum distance from
the boiler that the VenTum unit should be
installed depending on the piping diameter
Table 4 : Maximum installation distance
Pipe size Approx. distance to
maintain 5 GPM
¾ " 7 ft (2 m)
1 " 38 ft (11 m)
1 ¼ " 100 ft (30 m)
The heating coil is made of materials compatible
with drinking water. The welds are made with
lead-free filler material and the copper pipes are
manufactured in accordance with ASTM B-88.
The coil is equipped with high-density aluminum
fins to obtain maximum heat exchange for a
compact size.
It is necessary to flush the heating coil before
starting the unit in order to eject deposits that may
Figure 5 : Possible hydronic air-handler orientations