Connection Of Heat Exchangers; Water And Glycol Heat Exchangers; Connection Of Water Heat Exchangers; Direct Evaporators - Remak AERO MASTER XP Series Installation And Operating Instructions Manual

Connection of Heat Exchangers

Water and Glycol Heat Exchangers

The connections of heating and cooling media feeds must be
performed so that no forces arising from the dilatation and weight
of feeding pipes and fittings will be transferred to the air-handling
unit. The corresponding connection points are marked with labels on
the unit side panel (heating water inlet, heating water outlet, coolant
inlet, coolant outlet).
As standard, water heater exchangers are equipped with air self-
venting 1/2" TACO valves, which are situated on top sides of both
headers.
Table 2 – dimensions of water heat exchangers
Dimensional Connection of
series VO 1–4 rows

Connection of Water Heat Exchangers

The counter-current connection of the heat exchangers is necessary
to achieve maximum output. When connecting the feeding fittings to
the heat exchangers, use two wrenches to tighten the screws to avoid
wresting of the exchanger's headers.
Figure 17 – Heat exchanger connection
Outlet
Air flow direction
(cooler
right-hand
version)
Inlet
Table 3 – dimensions of direct evaporators
Series Inlet 1 (1/2)
Number of rows
10
Connection of
VO 5–8 rows
Inlet
Air flow direction
(cooler right-hand
version)
Outlet
Inlet 2 (1/2) Outlet 1 (1/2) Outlet 2 (1/2)
Connecting fittings of sections with covered feeds must be insulated
and suitable grommets or sealing must be used to seal the passages
through the unit's casing.
Heating or cooling media can be led to the heat exchanger through
the lower panel (universal) or through removable side panels
(depending on the air-handling assembly, respectively if it is enabled
by the adjacent sections and service access), see figure #18. The
lay-out of the openings can be selected according to the mixing set
version and overall dimensions.
Figure 18 – Exchangers with covered feeds
Service panel
Removed side panel
Exchanger connecting tube plate
After connecting the water heat exchangers (heaters and coolers,
including mixing sets) to the distributing piping, it is necessary to
pressurize (flush with water) and vent the entire circuit, including the
heat exchanger, and then to perform leak-tightness checks of all pipe
joints and of the exchanger itself (including checking the interior of
the water exchanger section).
The manufacturer does not provide any guarantee covering any
damage resulting from liquid leakage from leaky joints or damaged
exchangers.

Direct Evaporators

Direct evaporators must be connected by a specialized contractor
authorized to install refrigerating equipments. The direct evaporators
are filled with nitrogen in the production factory.
Note:
Due to the aggressive environment inside the unit, the capillary probes
(CAP) for swimming-pool units are always installed on the external side
of the unit.

Steam humidification

For a detailed description of the installation, commissioning and
prescribed inspections of the steam humidification section, refer to
the separate manual which is a part of the accompanying documenta-
tion of the AeroMaster XP air-handling unit. When installing the steam
humidification section, observe the following recommendations:
 Air ducts led through cold areas must be insulated to avoid
condensation.
 The steam humidification assembly must be situated in
a non-freezing area.
 The steam generator can be noisy (switching of solenoid valves).
Therefore, it is advisable to install it away from quiet areas
Exchanger
Connections of heating or
cooling media through
the openings drilled in the
lower panel