Reznor R6GP Unit Installation Manual - Manual (Page 9)

9
Figure 4. Rigging & Hoisting
LIFTING
BEAM
CABLE OR CHAIN
SPREADER
BAR
SPREADER
BAR
BASE
RAIL BASE
RAIL
T
op of unit
to be
unobstr
ucted
Recommended Clearances
for Servicibility
Minimum Required
Clearances to Combustibles
36"
36"
36"
36"
48"
48"
60"
48"
Figure 5. Unit Clearance Requirements
Figure 7. Concrete Mounting Pad
3” min
Figure 6. Roof Curb
Roof
Curb
B, or C roof covering material as long as the following
requirements are met:
• If using side supply with return air ducts, the horizontal
discharge kit must be installed prior to unit installation.
• If using bottom discharge with return air ducts a roof curb
must be installed prior to unit installation. See Rigging
and Hoisting section on page 8 for setting of the unit.
Rooftop Mounting
Rooftop installations must be located according to local
building codes or ordinances and these requirements:
• The roof must be capable of handling the weight of the
unit. For unit weights, see Table 3 (page 27). Reinforce
the roof if necessary.
• The appropriate accessory roof curb (Figure 6) must be
installed prior to unit installation. The roof curb must be
square and level to ensure proper condensate drainage.
Please follow all instructions provided with the kit
.
WARNING:
Never drill or punch holes in unit base when
installing downflow units. Leakage may occur
if bottom pan is punctured.
• On bottom discharge applications, the supply and
return air ducts must be attached to the roof curb duct
supports, not the unit. Install all ductwork before setting
unit on curb or frame.
• Frame support must be constructed using noncombustible
materials. Full perimeter support is required under the
unit. Supports must be made of steel or weather resistant
wooden materials. The unit must be square and level
to ensure proper condensate drainage.
• The frame must be high enough to ensure prevention
of any moisture from entering the unit. Recommended
height to unit base is 8” (20cm) for both Downflow and
Horizontal installations.
• Secure roof curb or frame to roof using acceptable
mechanical methods per local codes.
Ground Level
Ground level installations must be located according to
local building codes or ordinances and these requirements:
• Clearances must be in accordance with those shown
in Figure 5.
• A concrete mounting pad (Figure 7) must be provided
and separate from the building foundation. The pad
must be level to ensure proper condensate disposal
and strong enough to support the unit’s weight. The slab
height must be a minimum of 3” (8cm) above grade and
with adequate drainage.
• Units require horizontal supply and return kit for
horizontal installations.
• Ductwork should be attached directly to flanges on
panels supplied in horizontal duct conversion kits.