Table of Contents
Advertisement
5. UNIT LOCATION
The lurnace shall
be
appropnately located to the supply and
retum air dIstribution system. (See "AIR DISTRIBUTION".
Page 9) Sides and back of the furnace may be eoclosed by
wall framing. (See "Minimum Clearances: Table 7. and
Figures 3 through 5.)
The furnace installation is only ,ntended for free air retum
Ihmugh the furnace door louvers. DO NOT connect a dueled
return a" sySlem directly
to
the fumace. Improper installalion
may create a hazard and damage equIpment, as well as void
all warranties.
Furnace may be Installed on combustible floOring when USing
5elles-458 Duct Connectors (see Table 10 and FIgures 10·
17).
6. MINIMUM CLEARANCES
Th,s heat",," apphance must
be
Installed WIth clearances not
less than the minImUms shown In Table 7. ThIS heatIng
appliance must
be
Installed With ample clearance lor easy
acceSS to the air lilter. blower assembly. burner assembly.
controls, and vent connections.
Minimum furnace clearances to combustible materialS
shall be In accordance with Ihe furnace rallng plate.
General clearances are as follows:
a. All IOstallat,ons; Back (0"), SIdes (0"). Top (6"), Duct
(0") and Roof Jack/Pipe (0")
b Alcove installations (see Ftgure 31: minImum 18"
clearance at tront of turnace shall be provided lor
future sel\llcing. A removable access panel should be
III
ALL MODELS
CLOSET
ALCOVE
Front
'"
""
Back
0"
0"
Sides
0"
0"
Roof Jack/Pipes
0"
0"
Top
'"
' "
Plenum Sides
0"
0"
Top and Sides of Duct
0"
0"
Bottom of DUCI WIthin
0"
0"
installed between top 01 the " ..mace door I'ame and
the cell,ng
c. Closet installatIons mUSI use a Iouve'ed door haVIng
a minImum free area of 235 sq, on. when Iocaled S"
from fumace l$a<> Figure 4), For speCIal clearance
between
1,"
and 6". reqUIrements are a louvered door
wllh a minimum of 250
sq
,n Iree a'ea. With the
openmgs In the closet Ooor <mectly in hne wnh the
louveredopeOlngs ,n the furnace doo' , A fuliy louvered
c10sel door may oe use<J (Sa<> Figure 51.
A
CAUTION:
HAZARD OF ASPHYXIATION: Negative
pressure Inside the closet, with closet door
closed and the furnace blower operating on
high speed, shall
be
no more negative than
minus 0,05 Inch water column.
7. RETURN AIR PROVISIONS
U.S.A. home manufactures shall comply W'lh ali of the
follOWIng condilions to have U.L acceptance of ceiling or m·
floor return all systems for clOSe! Installed forced air heanng
appliances;
---
/
..
".
,
•
,,~
..
•
a Regardless of the location. the return air opening mto
Ihe closet shall not be leSS lhan specliied in lhe
appliance's I,stlng
b Means shall be provldedlOpreVenl lnadvenent closure
by a Ilat oblect placed ove' the return a" opening
when It IS located In Ihe lloor of Ihe closet (versus lhe
ven>eal fronl or Side walil
c, The cross"sechonal area 01 the relurn dUCI system
leading into the closet, when located in the floo, Or
ceiling shall not be less than 250 square ,nches.
d The total hee area ot open,ngs ,n the Hoor or ceiling
reglslers serving tne relurn air duct system must be at
least 352 sq.in. AI leasl one reglste, should
be
Iocaled where it is not likely 10
be
covered by carpellng.
boxes and olhe, oblects,
Figure 2. Ove",11 Dimensions
NORDYNE - manufaClUrer of lntertherm Bnd Miller products
Hide quick links:
Advertisement
Table of Contents
