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I STALLER'S GUIDE
@
BRAZE
TYPE iNDOOR
END
SEALING
CAP
ACCUTRON
TM
COMPONENTS
/
BODY
_'_
FLOW
CONTROL
CHECK
VALVE
(F.C.C.V.)
ORIFICE
AS SHIPPED
-_
FIELD SUPPLIED
LIQUID LINE
C. ACCUTRON
TM
FLOW
CONTROL
VALVE
c_
IM
If the indoor u nit Syste In Refi'i_ erant F1ow control is an Accu tron-
orifice and check valve assembly,
an orifice size change
will be
necessary.
The outdoor
model determines
the required
orifice size.
Check
the listed orifice size on nameplate
of the selected
outdoor model.
If the indoor u nit is factory shipped
with a dilIbrent
orifice size,
the orifice must be changed
to obtain system
rated performance.
IMPORTANT:
The outdoor u nit is shipped
with the proper size
orifice and a stick-on
orifice size label in an envelope
attached
to the outdoor
unit.
Outdoor
unit nameplate
will have correct
orifice size specified
as BAYFCCV
- - - A fbr rated
performance.
D. INSTALLING
REFRIGERANT
LINES
Condensing
units
have provisions
for braze
connections.
Pressure
taps are provided
on the service valves of outdoor
unit
fbr compressor
suction
and liquid pressures.
The indoor end of the recommended
refrigerant
line sets may be
straight
or with
a 90 degree
bend,
depending
upon
situation
requirements.
This should
be thoroughly
checked
out before
ordering
refl'igerant
line sets.
The gas line must
always
be insulated.
The units are factory
charged
with the system
charge
required
when using
fif_een (15) feet of connecting
line. Unit nameplate
charge
is the same.
Final refrigerant
charge adjustment
is necessary.
Use the Charg-
ing (?harts
in the outdoor
unit Service
Facts.
1. Determine
the most practical
way to run the lines.
2. Consider
types of bends to be made and space limitations.
NOTE:
Large diameter
tubing
will be very di[f_cult
to rebend once
it has been shaped.
3. Determine
the best starting
point fbr routing
the refl_igerant
tubing-
-INSIDE
OR OUTSIDE
THE STRUCTURE.
4. Provide
a pull-thru
hole of suflicient
size to allow both liquid
and gas lines. The location of this hole (if practical)
should be just
above the wall plate which is resting
on the foundation.
5. Be sure the tubing
is of sufficient
length.
6. Uncoil the tubing
--- do not kink or dent.
7. Route
the tubing
maMng
all required
bends
and
properly
secure
the tubing
before making
connections.
8. To prevent
a noise within
the building
structure
due
to
vibration
transmission
fl_oln the refrigerant
lines, the following
precautions
should
be taken:
a.
When
the refl'igerant
lines
have to be fastened
to floor
joists or other fl'aming
in a structure,
use isolation
type hangers.
b. Isolation
hangers
should
also be used when
refrigerant
lines are run in stud spaces or enclosed
ceilings.
c.
Where the refrigerant
lines ru n through
a wall or sill, they
should
be insulated
and isolated.
d. Isolate
the lines fl'om all ductwork.
E. SERVICE
VALVE
OPERATION
BRASS
LIQUID
LINE
SERVICE
VALVE
The Brass
Liquid
Line Service
Valve is factory
shipped
in the
seated
position
to hold factory charge.
The pressure
tap service
port (when depressed)
opens only to the field brazing
side of the
valve when
the valve is in the seated
position.
The liquid line
valve is not a back seating
valve (see WARNING
below).
WARNING: Extreme caution should beex-
ercised
s o the internal
steel
stem
retaining
ring
is not
damaged
by backing
out the valve
stem when
opening
the
valve.
If the valve
stem
is forced
out past
the retaining
ring,
system
pressure
could
force
the valve
stem out of the
valve
body.
If the retaining
ring is missing,
do not attempt
to open
the valve.
See Figure
3.
BRASS
GAS
LINE
SERVICE
VALVE
The Brass
Gas
Line Service
Valve
is shipped
in the closed
position
to hold the factory refl'igerant
charge.
The pressure
tap
service port (when depressed)
opens only to the field brazing
side
when
the valve is in the closed position.
LIQUID LiNE SERVICE VALVE
UNIT
SIDE
OF
SERVICE
VALVE
HEX
HEADED
CAP-----_
LIQUID LINE
CONNECTION
RING
PAGE 2
Pub. No. 18-AC34D1-5
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