Configuring Units For Downflow (Verti- Cal) Discharge - Carrier SINGLE PACKAGED ELECTRIC COOLING UNITS 50GS Installation And Operating Instructions Manual

UNIT SIZE
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSOR
REFRIGERANT (R-22)
Quantity (lb.)
REFRIGERANT METERING DEVICE
Orifice ID (in.)
CONDENSER COIL
Rows...Fins/in.
Face Area (sq. ft.)
CONDENSER FAN
Nominal Cfm
Diameter
Motor Hp (Rpm)
EVAPORATOR COIL
Rows...Fins/in.
Face Area (sq. ft.)
EVAPORATOR BLOWER
Nominal Airflow (Cfm)
Size (in.)
Motor HP (RPM)
RETURN-AIR FILTERS (in.)*
Throwaway
* 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
ft./min. for throwaway type or 450 ft./min. for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg.
UNIT SIZE
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSOR
REFRIGERANT (R-22)
Quantity (lb.)
REFRIGERANT METERING DEVICE
Orifice ID (in.)
CONDENSER COIL
Rows...Fins/in.
Face Area (sq. ft.)
CONDENSER FAN
Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)
EVAPORATOR COIL
Rows...Fins/in.
Face Area (sq. ft.)
EVAPORATOR BLOWER
Nominal Airflow (Cfm)
Size (in.)
Motor Hp (RPM)
RETURN-AIR FILTERS (in.)*
Throwaway
*
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
ft./min. for throwaway type or 450 ft./min. for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg.
CONFIGURING UNITS FOR DOWNFLOW (VERTICAL) DIS-
CHARGE
Before performing service or maintenance operations on the
system, turn off main power to unit and install lockout tag or
electrical shock could result.
1. Open all electrical disconnects and install lockout tag before
starting any service work.
Table 1—Physical Data—Unit 50GS
018 024
1-1/2 2
254 260
Reciprocating
2.6 3.5
.034 .034
1...17 1...17 1...17
6.1 9.1
2000 2400
22 22
1/8 (825) 1/8 (825) 1/8 (825)
2...15 2...15 2...15
3.1 3.1
600 800
10x10 10x10 10x10
1/4 (825) 1/4 (1075) 1/4 (1075)
20x20 20x20 20x20
Table 2—Physical Data—Unit 50GX
024 030
2 2-1/2
270 291
3.7 4.4
.034 .030
1...17 1...17
10.8 12.7
2350 2350
22 22
1/8 (825) 1/8 (825)
3...15 3...15
3.1 3.1
800 1000
10x10 10x10
1/4 (1075) 1/4 (1075)
20x20 20x20
8
030 036 042
2-1/2 3 3-1/2
258 268 294
3.65 4.4 6.4
Accurater
.034 .032 .034
1...17 1...17
9.1 10.9 9.1
2400 3000 3000
22 18
1/4 (1100) 1/4 (1100)
3...15 4...15
3.7 3.06 3.06
1000 1200 1400
11x10 11x10
1/2 (1075) 3/4 (1075)
20x24 20x24
036 042
3 3-1/2
299 321
Scroll
5.2 7.6
Accurater
.032 .034
2...17 2...17
9.1 9.1
2350 3300
22 22
1/8 (825) 1/4 (1100)
3...15 3...15
3.7 4.7
1200 1400
11x10 11x10
1/2 (1075) 3/4 (1075)
20x24 20x30
2. Remove return duct cover located on duct panel by breaking
four (4) connecting tabs with screwdriver and a hammer. (Fig.
8 & 9)
3. To remove supply duct cover, break front and right side
connecting tabs with a screwdriver and a hammer. Push louver
down to break rear and left side tabs. (Fig. 8 & 9)
4. If unit ductwork is to be attached to vertical opening flanges
on the unit composite base (jackstand applications only), do so
at this time. Collect ALL screws that were removed. Do not
leave screws on rooftop as permanent damage to the roof may
occur.
048 060
4
324 389
Scroll Reciprocating
5.1
.032 .030
1...17 2...17
12.3 12.3
3600 3600
22 22
1/4 (1100) 1/4 (1100)
3...15 4...15
4.7
1600 2000
11x10 11x10
3/4 (1075) 1.0 (1100)
24x30 24x30
048
4
326
8.3
.034
2...17 2...17
12.3
3300 3300
22
1/4 (1100) 1/4 (1100)
4...15 4...15
4.7
1600 1750
11x10 11x10
3/4 (1075) 1.0 (1040)
24x30 24x30
5
7.4
22
4.7
060
5
399
8.1
.032
16.4
22
4.7