9
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning overhead obstruc-
tion or for vertical clearances.
Fig. 4 —
Service Clearance Dimensional Drawing
INSTALLATION
Jobsite Survey
Complete the following checks before installation.
1. Consult local building codes and the NEC (National Elec
-
trical Code) ANSI/NFPA 70 for special installation
requirements.
2. Determine unit location (from project plans) or select unit
location.
3. Check for possible overhead obstructions which may
interfere with unit lifting or rigging.
Step 1 —
Plan for Unit Location
Select a location for the unit and its support system (curb or other)
that provides for at least the minimum clearances required for
safety. This includes the clearance to combustible surfaces, unit
performance and service access below, around and above unit as
specified in unit drawings. See Fig. 4.
NOTE: Consider also the effect of adjacent units.
Unit may be installed directly on wood flooring or on Class A, B,
or C roof-covering material when roof curb is used.
Do not install unit in an indoor location. Do not locate air inlets
near exhaust vents, relief valves, or other sources of contaminated
air.
Although unit is weatherproof, avoid locations that permit water
from higher level runoff and overhangs to fall onto the unit.
Select a unit mounting system that provides adequate height to al
-
low installation of condensate trap per requirements. Refer to “In
stall External Condensate Trap and Line” on page 18 for required
trap dimensions.
ROOF MOUNT
Check building codes for weight distribution requirements. Unit
operating weight is shown in Table 2.
C
B
A
D
LOCATION
DIMENSION
CONDITION
A
48-in. (1219 mm)
Unit disconnect is mounted on panel
18-in. (457 mm)
No disconnect, convenience outlet option
18-in. (457 mm)
Recommended service clearance
12-in. (305 mm)
Minimum clearance
B
42-in. (1067 mm)
Surface behind servicer is grounded (e.g., metal, masonry wall)
36-in. (914 mm)
Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)
Special
Check sources of flue products within 10 ft (3 m) of unit fresh air intake hood
C
36-in. (914 mm)
Side condensate drain is used
18-in. (457 mm)
Minimum clearance
D
48-in. (1219 mm)
No flue discharge accessory installed, surface is combustible material
42-in. (1067 mm)
Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
36-in. (914 mm)
Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)
Special
Check for adjacent units or building fresh air intakes within 10 ft (3 m) of this unit’s flue outlet
Содержание 48LC Series
Страница 5: ...5 Fig 2 Unit Dimensional Drawing Size 08 Unit ...
Страница 6: ...6 Fig 2 Unit Dimensional Drawing Size 08 Unit cont ...
Страница 7: ...7 Fig 3 Unit Dimensional Drawing Size 09 and 12 Units ...
Страница 8: ...8 Fig 3 Unit Dimensional Drawing Size 09 and 12 Units cont ...
Страница 11: ...11 Fig 6 Roof Curb Details Size 08 12 Units ...
Страница 21: ...21 Fig 34 48LC 08 12 Electro mechanical Control Wiring Diagram ...
Страница 22: ...22 Fig 35 48LC 08 12 RTU Open Control Wiring Diagram ...
Страница 23: ...23 Fig 36 48LC 08 12 SystemVu Control Wiring Diagram ...
Страница 24: ...24 Fig 37 48LC 08 12 Typical Power Wiring Diagram Electromechanical and RTU Open Controls 208 230 v Unit Shown ...
Страница 25: ...25 Fig 38 48LC 08 12 Typical Power Wiring Diagram SystemVu Control 208 230 v Unit Shown ...
Страница 61: ......