31
i.4.4.3.2
Pipe
connection
to
cooling
coils
for
chilled
water
Coils
with
3
rows
or
more
must
always
be
connected
in
counter
flow
to
the
airflow.
NOTE:
The
glycol
must
be
without
additives
and
auto
glycol
must
not
be
used.
Automatic
bleeding
has
to
be
installed
at
the
highest
point
of
the
2
pipes
—
supply
or
return
pipe.
To
protect
against
frost
a
temperature
sensor
for
the
transmission
of
an
analog
signal
to
the
controller
is
placed
in
a
pipe
on
the
collection
pipe
for
return
water.
The
sensor
must
be
fitted
water
tight
with
a
cap
in
the
pipe
before
water
under
pressure
is
in
the
battery.
The
pipe
for
the
sensor
is
soldered
on
the
collection
pipe
and
it
is
important
to
hold
contra
on
the
pipe,
when
the
cap
is
tightened.
Battery
seen
from
above.
The
sensor
measures
the
water
temperature
of
the
water
inside
one
of
the
small
pipes
for
return
water
in
the
battery.
The
sensor
reduces
the
area
in
this
pipe
and
hereby
also
the
flow
of
warm
water
in
this
pipe.
The
temperature
in
this
pipe
is
reduced
more
than
the
temperature
in
all
other
pipes
by
the
airflow
through
the
battery.
Because
the
lowest
temperature
in
the
battery
probably
is
measured
here,
this
system
creates
early
and
safe
warning
of
frost.
It
is
important
that
the
cap
is
tightened
sufficient
to
keep
the
sensor
system
fully
water
tight.
Summary of Contents for Danvent DV-10
Page 16: ...15 DVE Plug fan DVD Silencer DVX Humidifier...
Page 57: ...56...
Page 84: ...8 8...
Page 88: ...9 4 9 1 3 Information about connection of cables to terminals on the control board...
Page 91: ...9 7...
Page 103: ...9 19...
Page 111: ...12 3...
Page 115: ...12 7 Frequency converter is always necessary for the control of each PM motor...
Page 119: ...13 1 Annex 13 Commissioning See separate cover with annexes 1 2 3 and 13...
