8
Table 2 —
Physical Data
LEGEND
*Refrigerant charge is for 50XCR only. Additional charge required for
line sets and remote condenser unit.
Step 1 —
Complete Pre-Installation Checks
Examine unit for damage incurred during shipment. File claim im
-
mediately with transit company if damage is found. Check the
shipment for completeness. Verify that the nameplate electrical re
-
quirements match the available power supply.
DO NOT place the unit in a horizontal position that would allow
oil to drain into the top of the compressor. Do not allow refrigerant
lines to come into contact with wiring or sharp objects or edges.
Do not lift or move unit by putting pressure on refrigerant lines.
Step 2 —
Rig and Place Unit
Units are mounted on skids. Leave the unit on the skid until it is
in the final position. While on the skid, the unit can be rolled,
dragged or forklifted;
do not apply force to the unit.
Use a mini
-
mum of 3 rollers when rolling, and raise from above to remove
the skid when unit is in the final position. See Fig. 6 for rigging
details.
PLACING THE UNIT
The selected unit location should not be adjacent to an acoustically
sensitive space. The best locations for these units are mechanical
rooms, near elevator shafts, near restrooms, near stairwells or oth
-
er similar locations. Position the unit where large supply of out
-
door air is available for the unit inlet. Be sure to leave enough
space for the return air inlet access to the evaporator coil for clean
-
ing and maintenance. Units located floor-to-floor should have a
minimum of 10 ft between units to prevent recirculation of condi
-
tioned air. DO NOT locate units where they will recirculate condi
-
tioned air. This will cause increased head pressure which can
cause units to trip on high pressure. See Fig. 1-5 and 7 for recom
-
mended unit clearances and locations.
Either provide inlet filters to protect the coils, or locate the unit in
an area free from airborne dirt or other foreign material which
could clog the coils.
The units are designed to pass through most 36-in. door openings.
The filter rack may also be removed for additional clearance.
UNIT 50XCR
06
08
12
14
16
24
TONS
5
7.5
10
12
15
20
UNIT OPERATING WEIGHT (lb)
600
799
1001
1079
1231
1629
COMPRESSOR
Scroll
Compressor Model
ZPS60
ZPS67
ZP54/ZP49
ZP61/ZP57
ZP91/ZP67
ZP122/ZP91
Qty
1
1
2
2
2
2
Steps of Control
2
2
2
2
2
2
Operating Charge R-410A (lb)*
6.8
7.9
9.2
11.9
11.5
31.5
EVAPORATOR FAN
Adjustable, Belt Drive, Centrifugal Type
Nominal Cfm
1750
2600
3500
4375
5000
7000
Cfm Range
1500 to 2500
2250 to 3750
3000 to 5000
3600 to 6000
4500 to 5500
6500 to 8000
Available Static (in. wg)
0 - 1.6
0 - 1.6
0 - 1.6
0 - 1.6
0 - 1.6
0 - 1.6
Evaporator Fan Size
110-10R
110-10R
120-9R
120-9R
120-9R
120-11R
Number of Evaporator Fans
1
2
2
2
3
3
Standard Speed Range (rpm)
576-782
712-949
656-875
712-949
564-836
664-936
Max. Allowable rpm
1600
1700
2000
2000
2000
2000
Belt Type
A41
BX41
BX51
BX51
BX51
BX66
Fan Pulley (Type)
AK89
BK65
BK70
BK65
BK67
BK95
Motor Pulley (Type)
1VL44
1VP34
1VP34
1VP34
1VP34
1VP50
Std Hp
1.0
1.0
1.0
1.5
1.5
3
Hp Range
1 - 2
1 - 2
1 - 3
1.5 - 5
1.5 - 5
3 - 7.5
Fan Shaft Size (in.)
3
/
4
1
1
1
1
3
/
16
1
3
/
16
Motor Shaft Size (in.)
7
/
8
7
/
8
7
/
8
7
/
8
7
/
8
1
1
/
8
Center Distance (in.) - Vertical
15.3
15.3
18.1
18.1
18.1
21.3
Center Distance (in.) - Horizontal
N/A
N/A
15.5
13
15.7
18.1
EVAPORATOR COIL
3
/
8
-in. OD, Enhanced Copper Tube, Aluminum Fins
Quantity Rows ... Fin/in.
3…15
4…15
3…15
4…15
4… 15
4… 15
Fin Block Size (H x L) (in.)
28x35
28x46
32x60
32x60
32x80
36x80
Face Area (sq ft)
6.8
8.9
13.3
13.3
17.7
20
RETURN AIR FILTERS
Std 1 in., Throwaway
(2) 25 x 25
(2) 25 x 25
(8) 16 x 16
(8) 16 x 16
(8) 16 x 16
(4) 18 x 24
(2) 16 x 20
(4) 18 x 18
HIGH-PRESSURE SWITCH
Opens at 595 ± 10 psig; Closes at 443 ± 15 psig
Opens at 650± 10 psig; Closes at
500 ± 15 psig
LOW-PRESSURE SWITCH
Opens at 53 ± 5 psig; Closes at 80 ± 7 psig
CONDENSATE DRAIN LINE (in.)
1 at
3
/
4
MPT (Male Pipe Thread)
MPT
—
Male Pipe Thread
