Lennox Diplomat 10HP12, Информация

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Page 10
VAPOR LINE SERVICE VALVE (VALVE OPEN)
FIGURE 19
SCHRADER VALVE
SERVICE PORT
SERVICE PORT
CAP
STEM CAP
SNAP RING INSERT HEX WRENCH
HERE (PART #49A71 AND
SERVICE WRENCH)
VAPOR LINE SERVICE VALVE (VALVE CLOSED)
SCHRADER VALVE OPEN
TO LINE SET WHEN
VALVE IS CLOSED
(FRONT SEATED)
SERVICE PORT
SERVICE PORT CAP
(VALVE
FRONT SEATED)
SNAP RING
STEM
CAP
INLET
(FROM INDOOR COIL)
OUTLET
(TO COMPRESSOR)
KNIFE EDGE SEAL
OUTLET
(TO COMPRESSOR)
KNIFE EDGE SEAL
INLET
(FROM INDOOR COIL)
INSERT
HEX WRENCH HERE
(PART #49A71 AND
SERVICE
WRENCH)
To Open Vapor Line Service Valve:
1 – Remove stem cap with an adjustable wrench.
2 – Using service wrench and 5/16” hex head
extension (part #49A71) back the stem out
counterclockwise until the valve stem just touches
the retaining ring.
Do not attempt to backseat this valve. Attempts to
backseat this valve will cause snap ring to explode
from valve body under pressure of refrigerant.
Personal injury and unit damage will result.
DANGER
3 – Replace stem cap tighten firmly. Tighten finger
tight, then tighten an additional 1/6 turn.
To Close Vapor Line Service Valve:
1 – Remove stem cap with an adjustable wrench.
Line
Set
Model No.
TABLE 6
10HP12
Length of
Vapor & Liq.
Lines (ft.)
Liquid
Line
(o.d. ft.)
Vapor
Line
(o.d. ft.)
*
Not Available
**1/4
1/2
L10–21–20
L10–21–25
L10–21–35
L10–21–50 20
25
35
50
***5/16
5/8
5/8
5/8
5/8
***5/16
***5/16
***5/16
10HP18
10HP24
L10–41–20
L10–41–30
L10–41–40
L10–41–50 20
30
40
50
3/8 3/4
3/4
3/4
3/4
3/8
3/8
3/8
10HP30
10HP36
L10–65–30
L10–65–40
L10–65–50 30
40
50
3/8 7/8
7/8
7/8
3/8
3/8
10HP42
10HP48
10HP60
*
Not Available 3/8 1–1/8
*Field Fabricate
LINE SET SPECIFICATIONS
Condensing
Unit
Model No.
*** 3/8” x 5/16” reducer furnished to adapt unit to 5/16” line set.
**3/8” x 1/4” reducer furnished to adapt unit to 1/4 field fabricated line set.
2 – Using service wrench and 5/16” hex head
extension (part #49A71) turn stem in clockwise to
seat the valve. Tighten firmly.
3 – Replace stem cap. Tighten finger tight, then
tighten an additional 1/6 turn.
B – Plumbing
See figures 20 and 21 for unit refrigerant components.
Field refrigerant piping consists of liquid and vapor
lines from the outdoor unit (sweat connections). Use
Lennox L10 series line sets as shown in table 6 or field
fabricated refrigerant lines.
IV – CHARGING
IMPORTANT
Units manufactured before September 1, 1992
have a sufficient charge for a 25ft. line set. Units
manufactured after September 1, 1992 have
sufficient charge for a 20ft. line set. Refer to unit
nameplate for factory supplied charge.
Unit charge is based on a matching indoor coil and
outdoor coil with a 20 foot (6096 mm) line set. For varying
lengths of line set, refer to table 7.
Liquid Line
Set Diameter
1/4 in. (6 mm)
5/16 in. (8mm)
3/8 in. (10 mm)
TABLE 7
Ounce per 5 foot (ml per mm)
adjust from 20 ft. (6096mm)*
1 ounce per 5 feet (30 ml per 1524 mm)
*If line set is greater than 20 ft. (6.10m) add this amount. If line set is less
than 20 ft. (6.10m) subtract this amount
2 ounce per 5 feet (60 ml per 1524 mm)
3 ounce per 5 feet (90 ml per 1524 mm)