6
Fig. 3 — Service Clearances — 48HC**04-07 Units
INSTALLATION
Job-Site Survey —
Complete the following checks be-
fore installation.
1. Consult local building codes and the NEC (National
Electrical Code) ANSI/NFPA 70 for special installa-
tion requirements.
2. Determine unit location (from project plans) or select unit
location.
3. Check for possible overhead obstructions which may in-
terfere with unit lifting or rigging.
Step 1 — Plan for Unit Location —
Select a loca-
tion for the unit and its support system (curb or other) that pro-
vides for the minimum clearances required for safety. This in-
cludes the clearance to combustible surfaces, unit performance
and service access below, around and above unit as specified in
unit drawings. See Fig. 2.
NOTE: Consider also the effect of adjacent units. Be sure
that unit is installed such that snow will not block the com-
bustion intake or flue outlet.
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 in-
lets near exhaust vents or other sources of contaminated air. For
proper unit operation, adequate combustion and ventilation air
must be provided in accordance with Section 5.3 (Air for Com-
bustion and Ventilation) of the National Fuel Gas Code, ANSI
Z223.1 (American National Standards Institute) and NFPA
(National Fire Protection Association) 54 TIA-54-84-1. In
Canada, installation must be in accordance with the CAN1-
B149 installation codes for gas burning appliances.
Although unit is weatherproof, avoid locations that permit
water from higher level runoff and overhangs to fall onto the
unit.
Locate mechanical draft system flue assembly at least 4 ft
(1.2 m) from any opening through which combustion products
could enter the building, and at least 4 ft (1.2 m) from any adja-
cent building (or per local code). Locate the flue assembly at
least 10 ft (3.05 m) from an adjacent unit’s fresh air intake hood
if within 3 ft (0.91 m) of same elevation (or per local code).
C
B
A
D
NOTE: Unit is not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning overhead
obstruction or for vertical clearances.
LOCATION
DIMENSION
in. (mm)
CONDITION
A
48 (1219)
18 (457)
18 (457)
12 (305)
Unit disconnect is mounted on panel.
No disconnect, convenience outlet option.
Recommended service clearance.
Minimum clearance.
B
42 (1067)
36 (914)
Special
Surface behind servicer is grounded (e.g., metal, masonry wall).
Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass).
Check for sources of flue products within 10-ft (3 m) of unit fresh air intake hood.
C
36 (914)
18 (457)
Side condensate drain is used.
Minimum clearance.
D
48 (1219)
42 (1067)
36 (914)
Special
No flue discharge accessory installed, surface is combustible material.
Surface behind servicer is grounded (e.g., metal, masonry wall, another unit).
Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass).
Check for adjacent units or building fresh air intakes within 10-ft (3 m) of this unit’s flue outlet.
Содержание WeatherMaker 48TC 04
Страница 4: ...4 Fig 2 Unit Dimensional Drawing ...
Страница 5: ...5 Fig 2 Unit Dimensional Drawing cont ...
Страница 21: ...21 Fig 34 48TC B07 Unit with Humidi MiZer Adaptive Dehumidification System Humidistat Wiring ...
Страница 39: ...39 Fig 45 PremierLink Wiring Schematic ...
Страница 40: ...40 Fig 46 PremierLink Wiring Schematic with Humidi MiZer System ...
Страница 48: ...48 Fig 65 Typical RTU Open System Control Wiring Diagram ...
Страница 49: ...49 Fig 66 Typical RTU Open System Control Wiring Diagram with Humidi MiZer System ...
