Installing, starting up, and servicing air-conditioning equip
ment can be hazardous due to system pressures, electrical
components, and equipment location (roofs, elevated struc
tures, etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment (Fig. 1).
Untrained personnel can perform basic maintenance func
tions such as cleaning coils. All other operations should be
performed by trained service personnel.
,.. 1
1-28
28
29
29.
29
7
Fig. 1 — Model 09DK (084 Shown)
When working on the equipment, observe precautions in
the literature and on tags, stickers, and labels attached to
the equipment.
Follow all safety codes. Wear safety glasses and work
gloves. Keep quenching cloth and fire extinguisher nearby
when brazing. Use care in handling, rigging and setting bulky
equipment.
See Tables lA and IB for Physical Data.
ELECTRIC SHOCK HAZARD
Separate power sources (main and control cir
cuit power) are used for these units. Be sure
both main and control circuit powers are dis
connected before servicing.
INSTALLATION
Step 1 — Complete Pre-Installation Checks —
Examine for damage incurred during shipment. File claim
immediately with transit company if damage is found. Ver
ify that the nameplate electrical requirements match the avail
able power supply. Check the shipment for completeness.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 12 PC 111 Catalog No 530-953 Printed in U.S A Form 09DK-4SI Pg 1 4-93 Replaces: New
Tab 4a
Table IA — Physical Data 60 fìz
English
09DK
NOMINAL TONS
OPERATING WEIGHT-lb
Cu-AI*
Cu-Cut
SHIPPING WEIGHT-lb“
Cu-AI‘
Cu-Cut
054
50
1695
1983
2010
2298256929383403
REFRIGERANTS
NOMINAL HEAT REJECTION
(TONS)tt
CONDENSER FANS
No. of Blades
No. of Fans
Fan Diameter-In.30
AIrflow-cfm
Fan Speed-rpm
Fan Motor-hp1
CONDENSER COILS
Quantity4
FIns/in.17
No. of Rows
Total Face Area (sq ft)
65.878.695.4103.5
4444
4466
35,000
11401140
2
80.5
TD — Temperature Difference = Saturated Condensing Temperature - Entering-Air Temperature
‘Copper tubes and aiuminum fins.
TCopper tubes and copper fins.
“Packaging option includes skid and coil protection.
ttNominal heat rejection based on refrigerant R-22, 15° F subcooling, and a 30° F temperature difference (TD).
064
60
18452200
22782617
21362521
R-134A, R-22, R-12, R-500, R-502
303030
35,00052,00051,000
111
444
171717
32
80.5116.71167
074
70
11401140
084
80
2421
3099
2725
3
SI
09DK
NOMINAL kW
OPERATING WEIGHT-kg
Cu-AI*
Cu-Cut
SHIPPING WEIGHT-kg“
Cu-AI*
Cu-Cut
REFRIGERANTS
NOMINAL HEAT REJECTION
(kW)tt
CONDENSER FANS
No. of Blades
No. of Fans
Fan DIameter-mm
AIrflow-L/s
Fan Speed-r/s
Fan Motor-kW
CONDENSER COILS
Quantity
FIns/m
No. of Rows
Total Face Area (sq m)
TD — Temperature Difference = Saturated Condensing Temperature - Entering-Air Temperature
‘Copper tubes and aluminum fins.
tCopper tubes and copper fins.
“Packaging option includes skid and coil protection
ttNominal heat rejection based on refrigerant R-22, 8.3° C subcooiing, and a 16.7° C temperature difference (TD).
TD — Temperature Difference = Saturated Condensing Temperature - Entering-Air Temperature
'Copper tubes and aluminum fins
tCopper tubes and copper fins.
"Packaging option includes skid and coil protection.
ttNominal heat rejection based on refrigerant R-22, 15° F subcooling, and a 30° F temperature difference (TD).
054064074
506070
169518452200
19832278
22982569
65.878.6
6666
4466
35,00035,00052,00051,000
4444
17171717
2
80.580.5116.71167
21362521
R-134A, R-22, R-12, R-500, R-502
3
26173099
2938
95 4103.5
1
2
084
80
2421
2725
3403
1
3
SI
09DK054064074084
NOMINAL kW
OPERATING WEIGHT-kg
Cu-AI*
Cu-Cut
SHIPPING WEIGHT-kg"
Cu-AI*
Cu-Cut
REFRIGERANTS
NOMINAL HEAT REJECTION
(kW)tt
CONDENSER FANS
No. of Blades
No. of Fans
Fan DIameter-mm762762762762
AIrflow-L/s16 52016 52024 54024 070
Fan Speed-r/s15.815.815.815.8
Fan Motor-kW.746
CONDENSER COILS
Quantity
Fins/m669669669669
No. of Rows
Total Face Area (sq m)
TD — Temperature Difference = Saturated Condensing Temperature - Entering-Air Temperature
•Copper tubes and aluminum fins
tCopper tubes and copper fins
"Packaging option includes skid and coil protection.
ttNominal heat rejection based on refrigerant R-22, 8 3° C subcooling.
175 7
769837998
9001033
912969
1042
231.3276.2335.3363.8
6
4
4
2
7.5
and a 16.7° C temperature difference (TD)
210 9246 0
11651333
R-134A, R-22, R-12,R-500, R-502
666
466
746746
44
323
7.5
281 2
11871406
1144
10 8410 84
1098
1236
1544
.746
4
Step 2 — Rig and Place Unit
RIGGING — These units are designed for overhead rig
ging and this method should be used. Lifting holes are pro
vided in the frame base rails which are marked for rigging
(see rigging label on the unit). It is recommended that field
supplied pipes of sufficient length that extend beyond the
frame are passed through the holes. Attach cables, chains,
or straps to both ends of the pipes. Use spreader bars or a
frame to keep the cables, chains, or straps clear of the unit
sides. All cables should run to a central suspension point
so that the angle from the horizontal is not less than
45 degrees. See Fig. 2 and Table 1 for weight distribution
information. Standard coil protection packaging will pro
vide some protection to the unit. Raise and set the unit down
carefully.
Domestic Units With No Overhead Rigging— Standard con
denser packaging consists of coil protection only. Skids are
not provided as part of the standard packaging. If overhead
rigging is not available at the jobsite, place the unit on a
skid or pad by using jacks at the rigging points before drag
ging or rolling. When rolling, use a minimum of 3 rollers.
When dragging, pull the pad or skid. Do not apply pressure
to the unit. Raise from above to lift off the pad or skid
when in final position. See rigging section above for more
information.
Export and Domestic Units With Skids— All export units
are mounted on skids with vertical coil protection. Leave
the unit on the skid until it is in the final position. While on
the skid, the unit can be rolled, dragged or forked; do not
apply force to the unit. Use a minimum of 3 rollers when
rolling, and raise from above to remove the skid when unit
is in the final position. See rigging procedure above for more
information.
A CAUTION
Do not forklift these units unless attached to a skid de
signed for forklifting; damage to unit may occur. If uti
lizing a packaging option which includes a skid, the
forklift truck must have at least a 60-in. (1524 mm)
fork.
PLACING THE UNIT — Locate the condenser where an
adequate supply of inlet outdoor air is available. Do not lo
cate where the possibility of air recirculation exists, such as
under a roof overhang. Also, locate the condenser in an
area free from airborne dirt or other foreign material which
could clog the condenser coils. Refer to Fig. 3 and 4 for
airflow clearances. For multiple units, allow 8 ft (2440 mm)
separation between units for airflow and service. Placement
area must be level and strong enough to support operating
weight of the unit (Fig. 2 and Table 1). It is recommended
to bolt unit securely to pad when unit is positioned and lev
eled. Fasteners for mounting unit are field supplied. If vi
bration isolators are required for a particular installation,
refer to the unit weight distribution data table and diagram
below to help select the proper isolators.
Y - DIMENSION
UNIT 09DK
054
064
074
084
COIL TYPE*
*Cu-AI — Copper Tubes, Aluminum Fins
Cu-Cu — Copper Tubes, Copper Fins.
UNIT 09DK
054
064
074
084
COIL TYPE*
Cu-AI1695 (769)
Cu-Cu
Cu-AI
Cu-Cu
Cu-AI
Cu-Cu
Cu-AI
Cu-Cu
TOTAL WEIGHT
1983 (900)
1845 (837)
2278 (1033)
2200 (998)
2617 (1187)
2421 (1098)
3099 (1406)843 (382)751 (341)
*Cu-AI — Copper Tubes, Aiuminum Fins.
Cu-Cu — Copper Tubes, Copper Fins.
Cu-AI
Cu-Cu
Cu-AI
Cu-Cu
Cu-AI
Cu-Cu
Cu-AI
Cu-Cu
lb (kg)
X- DIMENSION
CENTER OF GRAVITY In. (mm)
X Dimension
48.1 (1222)
48.3 (1227)
48 2 (1224)
44,5 (1232)
56 7 (1440)
57.4 (1458)
57.1 (1450)
581 (1476)
A
452 (205)425 (193)
524 (238)497 (225)
489 (222)
598 (271)
618 (280)
722 (328)
673 (305)
Y Dimension
42 7 (1084)
42 9 (1090)
42 8 (1087)
43.1 (1095)
42 5 (1080)
42.8 (1087)
42 6 (1082)
43 0 (1092)
OPERATING CORNER WEIGHTS lb (kg)
BCD
462 (210)
571 (259)542 (246)568 (258)
526 (239)
630 (286)
581 (264)
396 (180)422 (191)
468 (212)
434 (197)
486 (220)
589 (267)
541 (245)626 (284)
709 (322)
494 (224)
459 (208)
571 (259)
675 (306)
796 (361)
Fig. 2 — Weight Distribution
NOTES:
1. The approximate operating weight of the unit is:
09DK-054—
09DK-054-C
09DK-064—
09DK-064-C
2. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way.
Ends — 5 ft [1524 mm]
Sides — 6 ft [1829 mm]
3. All units are shipped with a capacity split tubing kit. This kit may be used by
the field to obtain 100%, 50%/50% and 67%/33% capacity splits. To obtain
a 33%/33%/33% capacity split, coils must be manifolded by the field. Coils'
are factory circuited for a 33%/33%/17%/17% capacity split.
________
-------------
-------------
-------------
► 1695 lb [769 kg]
»■ 1983 lb [900 kg]
»• 1845 lb [837 kg]
»-2278 lb [1033 kg]
CONTROL BOX
END
UNIT
09DK-054—
09DK-054-C
09DK-064—
09DK-064-C
DIMENSION YDIMENSION X
3'-6 11/16”
[1084 mm]
3'-6 7/8"
[1090 mm]
3'-6 3/4"
[1087 mm]
3’-7 1/8"
[1095 mm]
4'-1/8"
[1222 mm]
4'-5/16"
[1227 mm]
4'-3/16"
[1224 mm]
4'-1/2"
[1232 mm]
OPERATING CORNER WEIGHTS
AB
452 lb
[205 kg]
524 lb
[238 kg]
489 lb
[222 kg]
598 lb
[271 kg]
425 lb
[193 kg]
497 lb
[225 kg]
462 lb
[210 kg]
571 lb
[259 kg]
C
396 lb
[180 kg]
468 lb
[212 kg]
434 lb
[197 kg]
542 lb
[246 kg]
D
422 lb
[191 kg]
494 lb
[224 kg]
459 lb
[208 kg]
568 lb
[258 kg]
CAPACITY SPLIT
100%
50%/50%
67%/33%
33%/33%/33%
33%/33%/17%/17%
HOT GAS
LIQUID
HOT GAS
LIQUID
HOT GAS
LIQUID
HOT GAS 1
LIQUID
HOT GAS 1 7
LIQUID
TYPE
T-A 1/2'-
C224 7rain3
BASE OVERALL
CONNECTIONS
N0.5
1/3.5,7
2,4.6,8
5,7
1/3
2.4
6.8 7/8 I.D.
1.3,5 7
2.4.5 8
7
2a 4.5
3 5
4
2 8
SIZE
11/8’ I.D.
7/8 I.D.
11/8' I.D.
11/8' I.D.
7/81.0.
3,511/8' I.D.
7/8 I.D.
11/8' I.D.
6 7/8 I.D.
Fig. 3 — Dimensions; 054 and 064 Units
NOTES.
1. The approximate operating weight of the unit is:
09DK-074—
09DK-074-C
09DK-084
09DK-084--C
2. Unit must have clearances for airflow as follows:
Top — Do nof restrict in any way.
Ends — 5 ft [1524 mm]
Sides — 6 ft [1829 mm]
3. All units are shipped with a capacity split tubing kit. This kit may be used by
the field to obtain 100%, 50%/50% and 67%/33% capacity splits. To obtain
a 33%/33%/33% capacity split, coils must be manifolded by fhe field. Coils
are factory circuited for a 33%/33%/17%/17% capacity split.
_________
----------------
-----------------
--------------
2200 ib [998 kg]
»2617 ib [1187 kg]
»• 2421 ib [1098 kg]
»-3099 Ib [1406 kg]
09DK-074—
09DK-074-C
09DK-084—
09DK-084-C
Ov
DIMENSION Y
3’-6 1/2"
[1080 mm]
3'-6 13/16"
[1087 mm]
3'-6 5/8"
[1082 mm]
3'-7"
[1092 mm]
П6) MTG HOLES
17/32' DIA.—V
C13.5bb3
r-4 7/8'-
С42В.5в>т:
HT6. HOLES
DIMENSION X
Г-5 1/2'-
C444m}
HTG. HOLES
4'-8 11/16"
[1440 mm]
4'-9 3/8"
[1458 mm]
4'-9 1/8"
[1450 mm]
4'-10 1/8"
[1476 mm]
С22531ПЛ1
Г-4 3/4'-
L425cnir>3
MTG. HOLES
-?'-4 11/16'-
OPERATING CORNER WEIGHTS
AВ
618 Ib
[280 kg]
722 Ib
[328 kg]
673 Ib
[305 kg]
843 Ib
[382 kg]
HINGED ACCESS
PANEL
(CONTROL BOX)
526 Ib
[239 kg]
630 Ib
[286 kg]
581 Ib
[264 kg]
751 Ib
[341 kg]
-Г-5 1/2'
C444nti3
MTG. HOLES
C
486 Ib
[220 kg]
589 Ib
[267 kg]
541 Ib
[245 kg]
709 Ib
[322 kg]
»-1 1/2'
[Se.Snnl
MTG. HOLES
• 7/8'
[428.Siw]
MTG. HOLES
D
571 Ib
[259 kg]
675 Ib
[306 kg]
6261b
[284 kg]
796 Ib
[361 kg]
baseoverall
(4) RIG HOLES
2 5/8' DIA.
СбТтт]
CAPACITY SPLIT
100%
50%/50%
67%/33%
33%/33%/33%
33%/33%/17%/17%
TYPE
HOT GAS1,3.5.7
LIQUID2.4.6,87/8 I.D.
HOT GAS
LIQUID
HOT GAS
LIQUID2.4,587/8 I.D.
HOT GAS17
LIQUID
HOT GAS17
LIQUID2
CONNECTIONS
N0.5SIZE
5,7
1.3
2,46,87/8 I.D.
7
1.3.S
3.5
2
8 4,67/8 I.D.
3 5
4
8
• 7'-4 1/2'
[224?готЗ
BASE Overall
1 3/8' I.D.
1 3/8' I.D.
1 3/8' I.D.
1 3/8' I.D.
1 3/8' I.D.
57/8 I.D.
Fig. 4 — Dimensions; 074 and 084 Units
Step 3 — Complete Refrigerant Piping
GENERAL — All field leak and pressure testing should be
in accordance with local code requirements. If a local code
does not exist, use ASHRAE (American Society of Heat
ing, Refrigeration and Air Conditioning Engineers) Stan
dard 15, Safety Code for Mechanical Refrigeration.
For leak testing procedures, refer to the Carrier’s
“Refrigerant Service Techniques” Book, Form SM-IA.
For any parts that need to be removed, use a mini tubing
cutter. Perform phos-copper brazing on all field-made con
nections while protecting adjacent joints from heat.
Install or replace filter-drier(s). BEFORE CHARGING THE
SYSTEM, INSTALL OR REPLACE THE FILTERDRIER(S) CONNECTED TO THE LIQUID LINE WITHIN
THE INDOOR UNIT(S) TO PREVENT CONTAMINA
TION WITHIN THE SYSTEM.
COIL REFRIGERANT PIPING INSTALLATION - Hot
gas and liquid connections are located on the same end and
are capped from the factory with a heat shrink-type cap,
which provides a clean joint for field piping. The coil cir
cuiting is designed to provide several selections of coil splits
to satisfy various applications (See Table 2), with piping
connections made in the field. In all cases where circuits
are field connected, the piping connections should be made
within the unit cabinet. The hot gas lines should enter and
the liquid lines should leave the condenser at the header
end of the unit.
As a standard item, a tubing package for headering, in
cluding two fan cycle pressure switches (FCPSs) and hard
ware is provided for the 100, 50/50, and 67/33% typical
condenser coil circuiting options. The tubing also provides
the ports for easy FCPS installations. The ports come with
a 1/4 in. male flare fitting and check valve for each FCPS
replacement. Tubing and FCPSs are field installed regard
less of circuiting. Tubing packages are not offered for the
33/33/33% and 33/33/17/17% coil circuiting options; tub
ing for these coil circuit options must be field fabricated
and installed. See Fig. 5 and 6 for tubing package contents.
NOTE: 67/33, 33/33/33 and 33/33/17/17 represent average
coil split combinations. Refer to sections below for actual
values for your particular coil split combination.
IMPORTANT: With the 67/33, 33/33/33, and 33/33/
17/17% capacity split options, 3 or 4 FCPSs are used.
For these applications, an accessory fan control kit is
required. See accessory installation instructions for more
information.
Figure 7 shows a typical piping application for a condenser
with a multiple-split system. Figure 8 shows the typical field
piping arrangements for the 09DK units. See Fig. 9 for coil
connection details. Figures 10 and 11 show typical factory
supplied coil circuiting and typical field installed 67/33%
coil split circuiting respectively.
TUBING PACKAGE INSTALLATION - Before install
ing, inspect the package contents. If any parts are missing
or damaged, file a claim with the shipping company and
notify your Carrier representative. A field supplied 3/8-in.
conduit (Greenfield conduit recommended) is required
according to UL/CSA (Underwriters’ Laboratories/
Canadian Standards Association) code for the FCPS field
wiring. Field supplied 3/8-in. conduit connectors are re
quired for connection to the junction box.
100% Coil Circuiting Applications: 054. 064 Units
1. Piping — Refer to Fig. 9 and 12 for field piping details
for 100% coil circuiting. Note that tubes 15 and 22 require
cut on the longer leg of the tube. Two 7/8-in. OD tubes,
approximately 3 in. (76.2 mm) long, must be cut from the
remaining tubes (tubes 21, 23, or 25) and brazed between
the tees (item 8) and coil header stubs. The remaining tubes
are not used in this application and may be discarded.
2. Install Fan Cycle Pressure Switches and Clamps — Braze 2
valve core bodies (item 5) to designated hole locations on
tubes 19 and 22. Insert valve cores (item 6), into valve core
bodies by threading into place and tightening to 1.5 to
3 in.-lb (169.5 to 339 mN-m). Install FCPSl and FCPS2
(item 7) at designated locations on tubes 19 and 22. Cut the
3/8-in. field-supplied FCPS conduit at a desired length to
fit between each FCPS location and the junction box on the
unit. Figure 11 shows a typical installation of the conduit.
Feed FCPS wires through each conduit and secure at the
switch by utilizing each conduit connector. See Fig. 13.
Secure the conduit at the junction box with 3/8-in. fieldsupplied conduit connectors. Wire FCPSl and FCPS2
according to Fig. 14. Clamp hot gas line, tube 27, at the
location specified in Fig. 12 using the 1 5/8-in. clamp
(item 4) and the 2 screws supplied. Clamp the liquid line,
tube 24, using the 1 1/8-in. clamp (item 2) and the 2 screws
provided.
50/50% Coil Circuiting Applications: 054 and 064 units
1. Piping — Refer to Fig. 9 and 15 for field piping details
for 50/50% coil circuiting. Note that tubes 21 and 22
require cuts on the longer leg of the tubes. Two 7/8-in.
OD tubes, approximately 3 in. (72.6 mm) long, must be
cut from the remaining tubes (21, 25, 26, or 29) and brazed
between the tees (item 8) and coil header stubs. The re
maining tubes are not used in this application and may be
discarded.
2. Install Fan Cycle Pressure Switches and Clamps — Braze 2
valve core bodies (item 5) to designated hole locations on
tubes 19 and 22. Insert valve cores (item 6) into valve core
bodies by threading into place and tightening to 1.5 to
3 in.-lb (169.5 to 339 mN-m). Install FCPSl and FCPS2
(item 7) at designated locations on tubes 19 and 22. Cut the
field-supplied 3/8-in. FCPS conduit at a desired length to
fit between each FCPS location and the junction box on the
unit. Figure 11 shows a typical installation of the conduit.
Feed FCPS wires through each conduit and secure at the
switch using each conduit connector. See Fig. 13. Secure
the conduit at the junction box with 3/8-in. field-supplied
conduit connectors. Wire FCPSl and FCPS2 according to
Fig. 14. Clamp hot gas lines, tube 15 at the location spec
ified in Fig. 15 using the two 1 3/8-in. clamps (item 3)
and 4 screws provided. Clamp the liquid lines, tubes 21
and 23, using the two 7/8-in. clamps (item 1) and the
Discharge Tube’1 1/8 in. CD X 32 11/32 in. Lx 5 1/16 in. W
Discharge Tube
Discharge Tube1 3/8 in CD
Liquid Tube7/8 in. CD X 16 13/16 in. L X 3 7/16 in. W
Discharge Tube
Liquid Tube7/8 in. CD X 17 11/16 in. L
Straight Tube
Straight Tube7/8 in. CD X 7 3/4 in. L
Straight Tube7/8 in. OD X 18 1/4 in. L
Straight Tube1 5/8 in. OD X 34 in. L
Screw1/4 - 14 X 5/8 in long
Straight Tube7/8 in OD X 3 7/8 in long
Discharge Tube
DESCRIPTION
7/8 in.
1 1/8 in.
1 5/8 in.
1/4 in. male flare fitting
-
7/8 in. X 7/8 in. X 7/8 in.
1 1/8 in X 1 1/8 in. X 1 1/8 in.
7/8 in. X 7/8 in. X 1 1/8 in.
1 3/8 in. X 1 1/8 in. X 1 1/8 in.
1 5/8 in X 1 3/8 in X 1 3/8 in.
1 3/8 in. CD X 44 23/32 in L x 10 1/16 in. W
1 1/8 in. CD X 24 5/32 in L x 5 1/16 in W
1 1/8 in. CD X 24 1/2 in. L
7/8 in CD X 18 13/16 in L X 3 7/16 in. W
7/8 in. CD x8 11/16 in. Lx 5 1/16 in. W
1 1/8 in. OD X 7 3/4 in. L
1Liquid Tube
1
1Straight Tube1 1/8 in OD X 7 3/4 in L
1Straight Tube7/8 in. OD X 8 1/4 in. L
Liquid Tube7/8 in. OD X 14 13/16 in. L X 3 7/16 in W
271Straight Tube
28
298
1Straight Tube2 1/8 in OD X 40 in. L
Screw
DESCRIPTION
7/8 in
1 1/8 in.
1 3/8 in
1 5/8 in
2 1/8 in
1/4 in. male flare fitting
Fan cycle pressure switch
7/8 in. X 7/8 in X 7/8 in.
1 3/8 in. X 1 3/8 in.
7/8 in. X 7/8 in. X 1 1/8 in.
1 3/8 in. X 1 3/8 in X 1 3/8 in.
1 5/8 in. X 1 3/8 in. X 1 3/8 in
2 1/8 in X 1 5/8 in X 1 5/8 in
1 3/8 in CD X 50 25/32 in. L x 14 1/8 in. W
1 5/8 in CD X 50 29/32 in. L x 12 1/16 in. W
1 3/8 in CD X 34 1/2 in L X 4 3/4 in. W
1 3/8 in CD X 19 7/8 in. L X 4 3/4 in. W
1 5/8 in CD
7/8 in. OD X 23 13/16 in L X 3 7/16 in. W
1 3/8 in OD X 28 3/8 in. L
7/8 in OD X 23 1/4 in. L (074 Units only)
7/8 in. OD X 18 1/4 in L
7/8 in. OD X 17 7/8 in. L
1/4 in.-14 X 5/8 in long
Fig. 6 — 09DK074,084 Tubing Package Contents
66/34% Coil Circuiting Applications: 054 and 064 Units
NOTE: To operate the 054 and 064 condenser units with
66/34% coil circuiting, an accessory fan control kit is
required. Refer to fan control kit installation instruc
tions for more information.
1. Piping — Refer to Fig. 9 and 16 for field piping details
for 66/34% coil circuiting. Note that tube 16 will require
cuts on the longer leg of the tube. Tube 16 will be used in
the two specified locations. A 7/8-in. OD tube, approxi
mately 3 in. (72.6 mm) long, must be cut from the remain
ing tubes (23 or 26) and brazed between the tee (item 8)
and coil header stub. The remaining tubes are not used in
this application and may be discarded.
2. Install Fan-Cycle Pressure Switches and Clamps — Braze 3
valve core bodies (item 5) to designated hole locations on
tubes 19, 21, and 22. Insert valve cores (item 6) into valve
core bodies by threading into place and tightening to 1.5 to
3 in.-lb (169.5 to 339 mN-m). Note that the accessory fan
control kit is required for this coil circuiting. An extra FCPS
and valve assembly is provided with the kit. Install FCPSl,
FCPS2, and FCPS4 (item 7) at designated locations on tubes
19, 21, and 22. Cut the field-supplied 3/8-in. FCPS conduit
at a desired length to fit between each FCPS location and
the junction box on the unit. See Fig. 11 for typical conduit
installation. Feed FCPS wires through each conduit and se
cure at the switch by utilizing each conduit connector. See
Fig. 13. Secure the conduit at the junction box with 3/8-in.,
field-supplied conduit connectors. Wire FCPSl, FCPS2, and
FCPS4 according to Fig. 14 Note that FCPS2 and FCPS4
are wired in parallel. Fan 4 is shared by the 34% and 66%
refrigeration circuit. If either circuit needs the fan to be on,
it will be on. At the location specified in Fig. 16, clamp hot
gas lines, tubes 15 and 30, using a 1 3/8-in. clamp (item 3)
and a 1 1/8-in. clamp (item 2) with the 4 screws supplied.
Clamp the liquid lines, tubes 21 and 25, with 7/8-in. clamps
(item 1) and 4 screws provided.
100% Coil Circuiting Applications: 074 Units
1. Piping — Refer to Fig. 9 and 17 for field piping details
for 100% coil circuiting. Note that tube 16 requires a cut on
the longer leg of the tube. Two 7/8-in. OD tubes approxi
mately 3 in. (72.6 mm) long, must be cut from the remain
ing tubes (22 or 23) and brazed between the tees (item 9)
and coil header stubs. The remaining tubes are not used and
may be discarded.
2. Install Fan Cycle Pressure Switches and Clamps — Braze 2
valve core bodies (item 6) to designated hole locations on
tubes 20 and 24. Insert valve cores (item 7) into valve core
bodies by threading into place and tightening to 1.5 to
3 in.-lb (169 to 339 mN-m). Install FCPSl and FCPS2
(item 8) at designated locations on tubes 20 and 24. Cut the
3/8-in. field-supplied FCPS conduit at a desired length to
fit between each FCPS location and the junction box on the
unit. See Fig. 11 for typical conduit installation. Feed FCPS
wires through each conduit and secure at the switch by uti
lizing each conduit connector. See Fig. 13. Secure the con
duit at the junction box with 3/8-in. field-supplied conduit
connectors. Wire FCPSl and FCPS2 according to Fig. 18.
Clamp hot gas line, tube 28, using 2 1/8-in. clamp (item 5)
at the location specified in Fig. 17 with the 2 screws sup
plied. Clamp the liquid line, tube 25, using 1 1/8-in. clamp
(item 2) and the 2 screws provided.
50/50% Coil Circuiting Applications: 074 Units
1. Piping — Refer to Fig. 9 and 19 for field piping details
for 50/50% coil circuiting. Note that tube 23 will require a
cut, located exactly at the location of the hole in the tube.
Tube 23 will be used in the two locations specified. Two
7/8-in. OD tubes, approximately 3 in. (72.6 mm) long, must
be cut from the remaining tubes (22, 26, or 27) and brazed
between the tees (item 9) and coil header stubs. The re
maining tubes are not used in this application and may be
discarded.
2. Install Fan Cycle Pressure Switches and Clamps — Braze 2
valve core bodies (item 6) to designated hole locations on
tubes 20 and 24. Insert valve cores (item 7) into valve core
bodies by threading into place and tightening to 1.5 to
3 in.-lb (169.5 to 339 mN-m). Install FCPSl and FCPS2
(item 8) at designated location on tubes 20 and 24. Cut the
3/8-in. field-supplied FCPS conduit at a desired length to
fit between each FCPS location and the junction box on the
unit. See Fig. 11 for typical conduit installation. Feed FCPS
wires through each conduit and secure at the switch by us
ing each conduit connector. See Fig. 13. Secure the con
duit at the junction box with 3/8-in. field-supplied conduit
connectors. Wire FCPSl and FCPS2 according to Fig. 18.
Clamp hot gas line, tube 16, at the location specified in
Fig. 19 using two 1 5/8-in. clamps (item 4) and 4 screws
supplied. Clamp the liquid lines, tubes 23, using the two
7/8-in. clamps (item 1) and the 4 screws provided.
68/32% Coil Circuiting Applications: 074 Units
NOTE: To operate the 074 condenser units with 68/32%
coil circuiting, an accessory fan control kit is required.
See accessory installation instructions for more infor
mation.
1. Piping — Refer to Fig. 9 and 20 for field piping details
for 68/32% coil circuiting. Note that tubes 17 and 20 re
quire euts on the longer leg of the tubes. Tube 17 will be
used in the two locations specified. Also, a 7/8-in. OD tube,
approximately 3 in. (72.6 mm) long, must be cut from the
remaining tubes (23 or 27) and brazed between the tee
(item 9) and eoil header stub. The remaining tubes are not
used in this application and may be discarded.
2. Install Fan Cycle Pressure Switches and Clamps — Braze 3
core bodies (item 6) to designated hole locations on tubes
20, 22, and 24. Insert valve cores (item 7) into valve core
bodies by threading into place and tightening to 1.5 to
3 in.-lb (169.5 to 339 mN-m). Note that the accessory fan
control kit is required for this coil circuiting. An extra FCPS
and valve assembly is provided with the kit. Install FCPSl,
FCPS2, and FCPS4 (item 8) at designated locations on tubes
20, 22, and 24. Cut the 3/8-in. field-supplied FCPS conduit
at a desired length to fit between each FCPS location and
the junction box on the unit. See Fig. 11 for typical conduit
installation. Feed FCPS wires through each conduit and se
cure at the switch by utilizing each conduit connector. See
Fig. 13. Secure the conduit at the junction box with 3/8-in.
field-supplied conduit connectors. Wire FCPSl, FCPS2 and
FCPS4 according to Fig. 18. Note that FCPS2 and FCPS4
are wired in parallel. Fan 4 is being shared by the 32% and
68% refrigeration circuit. If either circuit needs the fan to
be on, it will be on. At the location specified in Fig. 20,
clamp hot gas lines, tube 15 with a 1 3/8 in. clamp (item 3)
and tube 16 with a 1 5/8 in. clamp (item 4) with the
4 screws supplied. Clamp the liquid lines, tube 22 with a
7/8 in. clamp (item 1) and tube 25 with a 1 1/8 in. clamp
(item 2) with the 4 screws supplied.
10
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