48VL-C, 48VL-E: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
9
Step 6 – Connect Condensate Drain
NOTE: When installing condensate drain connection be sure to comply
with local codes and restrictions.
This unit disposes of condensate water through a 3/4 in. NPT fitting
which exits through the base on the evaporator coil access side. See
Fig. 3 and Fig. 4 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 2-in. (51 mm) condensate trap at the
end of condensate connection to ensure proper drainage. Make sure that
the outlet of the trap is at least 1 in. (25 mm) lower than the drain-pan
condensate connection to prevent the pan from overflowing (See Fig. 7).
Prime the trap with water. When using a gravel apron, make sure it
slopes away from the unit.
Connect a drain tube using a minimum of 3/4-in. PVC or 3/4-in. copper
pipe (all field-supplied) at the outlet end of the 2-in. (51 mm) trap. Do
not undersize the tube. Pitch the drain tube downward at a slope of at
least 1-in. (25 mm) for every 10 ft (3.1 m) of horizontal run. Be sure to
check the drain tube for leaks.
A09052
Fig. 7 – Condensate Trap
Step 7 – Install Flue Hood
The flue assembly is secured and shipped in the return air duct. Remove
duct cover to locate the assembly (See Fig. 9).
NOTE: Dedicated low NOx models MUST be installed in California
Air Quality Management Districts where a Low NOx rule exists.
These models meet the California maximum oxides of nitrogen (NOx)
emissions requirements of 40 nanograms/joule or less as shipped from
the factory.
NOTE: Low NOx requirements apply only to natural gas installations.
Table 1—Physical Data (Continued)
UNIT SIZE 48090 48115 48130 60090 60115 60130
NOMINAL CAPACITY (ton) 4 4 4 5 5 5
SHIPPING WEIGHT lb
SHIPPING WEIGHT kg
480
218
480
218
480
218
497
225
497
225
497
225
COMPRESSOR / QUANTITY Scroll / 1
REFRIGERANT (R-410A)
Quantity lb
Quantity (kg.)
9.2
4.2
9.2
4.2
9.2
4.2
9.8
4.4
9.8
4.4
9.8
4.4
REFRIGERANT METERING DEVICE Orifice
ORIFICE ID in./mm .080 / 2.03 .084 / 2.14
OUTDOOR COIL
Rows...Fins/in.
Face Area (sq ft)
1...21
21.4
1...21
21.4
1...21
21.4
1...21
23.3
1...21
23.3
1...21
23.3
OUTDOOR FAN
Nominal CFM
Diameter in.
Diameter (mm)
Motor Hp (Rpm)
3600
26
660.4
1/5 (810)
3600
26
660.4
1/5 (810)
3600
26
660.4
1/5 (810)
4200
26
660.4
1/5 (810)
4200
26
660.4
1/5 (810)
4200
26
660.4
1/5 (810)
INDOOR COIL
Rows...Fins/in.
Face Area (sq ft)
3...17
4.7
3...17
4.7
3...17
4.7
3...17
5.6
3...17
5.6
3...17
5.6
INDOOR BLOWER
Nominal Cooling Airflow (CFM)
Size in.
Size (mm)
Motor HP (RPM)
1550
11x10
279.4x254
1.0 (1075)
1550
11x10
279.4x254
1.0 (1075)
1550
11x10
279.4x254
1.0 (1075)
1750
11x10
279.4x254
1.0 (1040)
1750
11x10
279.4x254
1.0 (1040)
1750
11x10
279.4x254
1.0 (1040)
FURNACE SECTION
*
Burner Orifice No. (Qty...Drill Size)
1 & 3 Phase Natural Gas (Factory Installed)
1 & 3 Phase Propane Gas
*. Based on altitude of 0 to 2000 ft (0-610 m).
3...38
3...53
3...33
3...51
3...31
3...49
3...38
3...53
3...33
3...51
3...31
3...49
HIGH-PRESSURE SWITCH
(psig) Cut-out Reset (Auto)
650 +/- 15
420 +/- 25
LOSS-OF CHARGE / LOW-PRESSURE
SWITCH (Liquid Line) (psig) cut-out Reset
(auto)
20 +/- 5
45 +/- 10
N/A
RETURN-AIR FILTERS Throwaway
†
‡
in.
mm
†. Required filter sizes shown are based on the larger of the AHRI (Air Conditioning Heating and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of
300 to 350 ft/minute for throwaway type. Air filter pressure drop for non-standard filters must not exceed 0.08 IN. W.C.
‡.
If using accessory filter rack refer to the filter rack installation instructions for correct filter sizes and quantity.
1 each 24x14x1
610x356x25
24x15x1
610x406x25
1 each 24x16x1
610x406x25
24x18x1
610x457x25
TRAP
OUTLET
1-in. (25 mm) min.
2-in. (51 mm) min.
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