8
Fig. 4 — Service Clearance Dimensional Drawing — Sizes 07-12
INSTALLATION
Jobsite Survey
Complete the following checks before installation:
1. Consult local building codes and the NEC (National
Electrical 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 oth-
er) that provides for the minimum clearances required for safety.
This includes the clearance to combustible surfaces, unit perfor-
mance and service access below, around and above unit as speci-
fied 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 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 allow installation of condensate trap per require-
ments. Refer to Step 9 — Install External Condensate Trap
and Line – for required trap dimensions.
ROOF MOUNT
Check building codes for weight distribution require-
ments. Unit operating weight is shown in Table 2.
C
B
A
D
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning
overhead obstruction or for vertical clearances.
LOCATION
CONDITION
DIMENSION
A
Unit disconnect is mounted on panel
48 in. (1219 mm)
No disconnect, convenience outlet option
18 in. (457 mm)
Recommended service clearance
18 in. (457 mm)
Minimum clearance
12 in. (305 mm)
B
Surface behind servicer is grounded (e.g., metal, masonry wall)
42 in. (1067 mm)
Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)
36 in. (914 mm)
Check for sources of flue products within 10 ft of unit fresh air intake hood
Special
C
Side condensate drain is used
36 in. (914 mm)
Minimum clearance
18 in. (457 mm)
D
Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
42 in. (1067 mm)
Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)
36 in. (914 mm)
Summary of Contents for WeatherMaster 50HC*A07 Series
Page 4: ...4 Fig 2 Unit Dimensional Drawing Sizes 07 09 ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing Sizes 07 09 cont ...
Page 6: ...6 Fig 3 Unit Dimensional Drawing Sizes 11 and 12 ...
Page 7: ...7 Fig 3 Unit Dimensional Drawing Sizes 11 and 12 cont ...
Page 25: ...25 Fig 42 Electro Mechanical Control Wiring Diagram ...
Page 26: ...26 Fig 43 Electro Mechanical Control Wiring Diagram with Humidi MiZer System ...
Page 27: ...27 Fig 44 Typical ComfortLink Control Wiring Diagram 50HC 08 09 shown ...
Page 29: ...29 Fig 46 Typical PremierLink Control Wiring Diagram ...
Page 30: ...30 Fig 47 Typical PremierLink Control Wiring Diagram with Humidi MiZer System Option ...
Page 31: ...31 Fig 48 Typical RTU Open Controller Wiring Diagram ...
Page 32: ...32 Fig 49 Typical RTU Open Controller Wiring Diagram with Humidi MiZer System Option ...
