Page 22 - IOM / ROOF-TOP FLEXY™ Series
HOHO
HOHO
HO
T WT W
T WT W
T W
AA
AA
A
TER BATER BA
TER BATER BA
TER BA
TTERIESTTERIES
TTERIESTTERIES
TTERIES
HYDRAULIC CONNECTIONS
The heating coil is connected to the isolating valves.
Two keys must be used to tighten the connections,
one of the keys maintains the valve body. Failure to
use two keys may damage the pipes and invalidates
the warranty.
Proceed as follows:
- Open the stop valves and set the 3-way valve to
the intermediate position (manual position and
turn the thumbwheel to a mid position).
- Fill the hydraulic
system and bleed
the battery using
the air vent
(Figure 21).
- Check the con-
nections for
possible leaks.
- Reset the 3-way
valve to
automatic.
PROTECTION AGAINST FREEZING
1) Use glycol water
GLYCOL IS THE ONLY
EFFECTIVE PROTECTION AGAINST FREEZING
The antifreeze must protect the unit and avoid icing
under winter conditions.
Warning : monoethylene glycol-based antifreeze may
produce corrosive agents when mixed with air.
2) Drain the installation
You must ensure that the manual or automatic air
bleeders have been installed on all high points in the
system. In order to drain the system check that all the
Figure 20
Figure 21
Figure 22
drain cocks have been installed on all low points of the
system.
To drain, open all the valves and remember to place
the unit in air.
The bleeder valves are used to discharge air, not
to let it in.
A HEATING COIL FROZEN DUE TO LOW
AMBIENT CONDITIONS IS NOT COVERED BY
THE WARRANTY.
ELECTROLYTIC CORROSION
Attention is drawn to the corrosion problems resulting
from electrolytic reaction created from unbalanced earth
connections.
ANY COIL DAMAGED BY ELECTRONIC
REACTION IS NOT COVERED BY THE
WARRANTY.
CONDENSATE TRAPS
The traps are not assembled when delivered and are
stored in the electrical panel with their clamping collars.
To assemble them, insert them on the condensate tray
outlets and use a screwdriver to tighten the collars
(Figure 22).
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