Carrier WeatherExpert 48N2 Installation Instructions Manual page 6
Packaged rooftop cooling units with gas heat and
comfortlink controls
Hide thumbs
Also See for WeatherExpert 48N2:
Table of Contents
Advertisement
Table 1 — Physical Data 48N Sizes N-T (75-150 Tons Nominal Capacity) (cont)
BASE UNIT
NOMINAL CAPACITY (tons)
®
HUMIDI-MIZER
COIL
Type
Material
Quantity
Surface
Total Face Area (sq ft)
STANDARD AND HIGH CAPACITY HOT WATER COILS
Type
Material
Quantity
Tube Type
Rows (each)
FPI
Total Face Area (sq ft)
STANDARD AND HIGH CAPACITY STEAM COIL
Type
Material
Quantity
Tube Type
Connection Size, Length (in.)
Total Face Area (sq ft)
HEATING SECTION LOW (48N ONLY)
Heating Section
Number of Heat Exchangers
Output (MBtuh)
Temperature Rise Range (F)
Efficiency (%)
Burner Orifice Quantity, Diameter (in.), Drill No.
Manifold Pressure (in. wg)
Line Pressure (in. wg) (min...max)
Firing Stages (Standard)
Firing Stages (Modulating)
Number of Gas Valves
HEATING SECTION MED (48N ONLY)
Heating Section
Number of Heat Exchangers
Input/Output (MBtuh)
Temperature Rise Range (F)
Efficiency (%)
Burner Orifice Quantity, Diameter (in.), Drill No.
Manifold Pressure (in. wg)
Line Pressure (in. wg) (min...max)
Firing Stages (Standard)
Firing Stages (Modulating)
Number of Gas Valves
HEATING SECTION HIGH (48N ONLY)
Heating Section
Number of Heat Exchangers
Input/Output (MBtuh)
Temperature Rise Range (F)
Efficiency (%)
Burner Orifice Quantity, Diameter (in.), Drill No.
Manifold Pressure (in. wg)
Line Pressure (in. wg) (min...max)
Firing Stages (Standard)
Firing Stages (Modulating)
Number of Gas Valves
SUPPLY FAN
Standard Supply Fan
Diameter (in.)
Wheel and Blade Type
Maximum Allowable Cfm
Maximum Allowable Speed (rpm)
Shaft Diameter at Pulley (in.)
High Static Supply Fan
Diameter (in.)
Wheel and Blade Type
Maximum Allowable Cfm
Maximum Allowable Speed (rpm)
Shaft Diameter at Pulley (in.)
LEGEND
Cu-Al
—
Copper-to-Aluminum
DWDI
—
Double Width Double Inlet
FPI
—
Fins per Inch
MBtuh
—
Btuh in Thousands
MCHX
—
Microchannel Heat Exchanger
RTPF
—
Round Tube Plate Fin
SWSI
—
Single Width Single Inlet
N
P
75
90
34.5
43
22.4
Aluminum Fin, Copper Tube, Steel Header, Sloped Casing
40.1
2
2
18
18
648
648
10-40
10-40
81
81
18, 0.1285, 30
18, 0.1285, 30
18, 0.1285, 30
3.1
3.1
5.8-11
5.8-11
2
2
14-100%
14-100%
2
2
3
27
972
20-50
81
NA
27, 0.1285, 30
27, 0.1285, 30
3.1
6.3-11
2
9-100%
3
3
4
27
36
972
1296
20-50
25-65
81
81
27, 0.1285, 30
36, 0.1285, 30
36, 0.1285, 30
3.1
3.1
6.3-11
6.3-11
2
2
9-100%
7-100%
3
4
28
DWDI Airfoil
42,000
1,800
2.25
40
DWDI Airfoil
52,500
1,250
3
* Base unit includes: economizer dampers and hoods, filter tracks less filters, evaporator coil
mounting less the evaporator, extended plenum, and standard efficiency condenser. For 75-
105 nominal ton units only, base unit weight also includes the short supply fan section.
6
Q
R
105
120
MCHX
Aluminum
1
E-Coated
43
43
RTPF
Aluminum Fin, Copper Tube
2
Smooth
2
12
RTPF
2
Smooth
2.50, 3.00
2
3
18
27
648
972
10-40
15-45
81
81
27, 0.1285, 30
27, 0.1285, 30
3.1
3.1
5.8-11
6.2-11
2
2
14-100%
9-100%
2
3
3
4
27
36
972
1296
20-50
20-50
81
81
36, 0.1285, 30
36, 0.1285, 30
3.1
3.1
6.3-11
6.2-11
2
2
9-100%
7-100%
3
4
4
5
36
45
1296
1620
25-65
25-55
81
81
45, 0.1285, 30
45, 0.1285, 30
3.1
3.1
6.3-11
6.2-11
2
2
7-100%
5-100%
4
5
DWDI Airfoil
DWDI Airfoil
S
T
130
150
43
43
26.4
49.0
3
3
27
27
972
972
15-45
15-45
81
81
27, 0.1285, 30
3.1
3.1
6.2-11
6.2-11
2
2
9-100%
9-100%
3
3
4
4
36
36
1296
1296
20-50
20-50
81
81
36, 0.1285, 30
3.1
3.1
6.2-11
6.2-11
2
2
7-100%
7-100%
4
4
5
5
45
45
1620
1620
25-55
25-55
81
81
45, 0.1285, 30
3.1
3.1
6.2-11
6.2-11
2
2
5-100%
5-100%
5
5
32
60,000
1,550
2.5
40
60,000
1,250
3
Advertisement
Table of Contents
