User`s manual

Table 1--Physical Data--UnR 48GS
UNIT SBZE 48GS
NOMINAL CAPACBTY (ton)
OPERATING WEIGHT (_b.)
COMPRESSORS
Quantity
REFRmGERANT (R-22)
Quantity (_b.)
REFRIGERANT METERING DEVICE
Orifice ID (in.)
CONDENSER CORL
Rows...Finslin.
Face Area (sq ft)
CONDENSER FAN
NominN Cfm
Diameter (in.)
Motor Hp (Rpm)
EVAPORATOR COBL
Rows...Fins/in.
Face Area (sq ft)
EVAPORATOR BLOWER
Nomina_ Airflow (Cfm)
Size ({n.)
Notor BP (Rpm}
FURNACE SECTION*
Burner Orifice No. (Qty...Drill Size)
Natural Gas
Burner Orifice No. (Qty...Drilt Size)
Propane Gas
RETURN-ABR FILTERS (in.)?
Throwaway
* Based on altitude of 0 to 2000 ft
018040 024040
1½ 2
249 280
024060
2
280
030040
2½
280
038080
3
320
042060
3½
355
042090
3½
355
.034 I .034 .034 .032 .034 .034
1 17 [ 1._17 1_17 1._17 1_.17 1._17
6 I n 9.1 9.1 10.9 9.1 9.1
2400
22
1/8 (825)
2000 1
1/8 (825) 1
030080 036060
2½ 3
280 320
Reciprocating
1
AcutroF M Device
.034 .032
1...17 1...17
9.1 10.9
2400 3000
22 22
1/8 (825) ¼ (1100)
2...15 3...15
3.1 3.1
1000 1200
10 x 10 11 x 10
lg (1075) 1/2 (I075)
2...38 2...38
2...46 2...46
20 X 20 20 X 24
3000
22
¼ (1100)
2400
22
1/8 (825)
3000
22
¼ (1100)
.O34
u
1...17
9.1
u
2400
22
1/8 (825)
u
2...15
3.1
u
8OO
10 x 10
1/4 (1075)
u
3000
22
¼(1100)
2...15 I 2...I5 2...15 3...15 4...15 4...15
" _ ' 3.1 3.1 3.1 3.1 3.1.J _ ,
600 I 800 1000 1200 1400 1400
10x10 I 10x10 10x10 11x10 11x10 11x10
1/4 (87511 1/4 (I075) 1/4 (1075) 1/2 (1075) 3/4 (1075) 3/4 (1075)
2...45 I 2...45 2...38 2...45 3...38 2...38 3...38
2...50 I 2...50 2...46 2...50 3...46 2...46 3...46
u
20x20 I 20x20 20X20 20x20 20X24 20x24 20x24
? Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300
fi/minute for throwaway type or 450 if/minute for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg
(ombustion and Ventilation, of the National Fuel Gas <ode ANSI
(American National Standards Institute) Z2231 or applicable
provisions of local building code In Canada, _bllow sections 7.2,
7.3, or 7.4 or CaniCGA. (Canadian Gas Association) B149
Installation Codes or applicable provisions of local building code.
Do not restrict condenser airflow. An air restriction at either
the outdoor-air inlet or the £m discharge can be detrimental to
compressor tiff.
The condenser £m pulls air through the condenser coil and
discharges it through the top cover Be sure that the fan discharge
does not recirculate to the condenser coil Do not locate the unit in
either a comer or under an overhead obstruction. The minin-mm
clearance under a pmlial overhang (such as a nomml house
overhang) is 48-im above the unit top. The nmximnm horizontal
extension of a partial overhang must not exceed 48-in_
Do not place the unit where water, ice, or snow flora an overhang
or roof will damage or flood the unit. Do not install the unit on
carpeting, tile, or other combustible materials. The unit nmy be
installed on wood flooring or on (;lass A, B, or ( roof covering
materials.
Step 5--RIG AND PLACE UNW
When installing the unit on a rooftop, be sure the roof will
support the additional _eight
Use spreader bars or crate top when rigging the uniL The units
must be rigged for lifting (See Fig 6). Refer to Table 1 and 2 for
operating weight. L'xe e:v::'eme ca_ltio_v to prea,e_vt damage whe_
mu_ ing the _mit. Unit m_¢stremain in an upH@tpo,sition dHring a//
riggi<g a_d mo_,i_tg operaff(ms.The unit must be level within 14"
for proper condensate drainage; therefore, the ground°level pad or
accessory roof curb must be level before setting the unit in place.
When a field°fi_bricated support is used, be sure that the support is
level and properly supports the unit. Lifting point should be
directly over the center of gravity for the unit.
Step g--CONNECT CONDENSATE DRAIN
NOTE: When installing condensate &ain connection be sure to
comply with local codes and restrictions.
Models 48GS and 48GX dispose of condensate water through a
3/4 in. NPT fitting which exits through the compressor access
panel (See Fig. 2 and 3 for location).
Condensate water can be drained directly onto the roof in rooftop
installations (where permitted) or onto a gravel apron in ground-
level installations. Install a field°supplied condensate trap at end of
condensate connection to ensure proper drainage Make sure that
the outlet of the trap is at least 1 in. lower than the drain pan
condensate connection to prevent the pan fl'om overflowing (See
Fig 8) Prime the trap with water When using a gravel apron,
make sure it slopes away fl'om the unit
If the installation requires draining the condensate water away
from the unit, install a 2=ira trap at the condensate connection to
ensure proper &ainage (See Fig. 8). Make sure that the outlet of
the trap is at least 1 in. lower than the drainpan condensate
connection. This prevents the pan tiom overflowing.
Prime the trap with water. Connect a &ain tube using a mininmna
of 3/4-in. PVC or 3/4-in. copper pipe (all field=supplied) at the
outlet end of the 2=ira trap. Do not undersize the robe. Pitch the