Bryant E 348 User Manual
S E P / 1 0 / 2 0 0 8 / W E D 1 1 : 3 2
UTC TECH PUB
F A X N o , 3 1 7 2 4 0 5 6 6 2
348
Installation Instructions
G AS-FIRED HORIZONTAL FURN ACE
Series E
39348D6 Rev 1
7/15/68 ^
The Bjjant Model 348 gas “fired forced air
horizontal furnace is certified by the Ameri
can Gas Association for attic installation .
Install in accordance with the requirements
of the local utility or authority having juris
diction.
The installer is referred to the American
Standard "Installation of Gas Appliances and
Gas'Piping, ASA Z21,30-1964, as a sound
and practical guide. ' . _ __
INSPECTION
—ühe .furnace ..is- ■ shippeiLwith -GOnt-rol-s -fully-
assembled. Note that natural gas units are
equipped with a combination regulator and
main manual shut-Off. As assembled, the
valve handle is on the underneath side. When
,1 handle is parallel with direction of gas floWj
the valve is open; when handle is at right
angles to direction of gas flow, the valve is
closed.
GAS CONTROL OPTIONS
D4 - Natural Gas
Bryant Gas Control Valve
Bryant Automatic Pilot
Combination Regulator, Main and
“ ■
.......
Pii ot ' Ga s S upplyV'àlvé s
D5 - Natural Gas - 10G% Shut-off
.....
-^'BryanrGas Control“Wiye^^''^—--------------------------
Thermocouple Automatic ^Piìot
-
-----
Pilot Gas Valve . \
Gas Regulator
Main Gas Shut-off Valve -
D2 - Propane Gas - 100% Shut-off
Bryant Gas Control Valve
Thermocouple Automatic Pilot /
Pilot Gas Valve
Main Gas Shut-off Valve
..- -
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UTC TECH PUB
DIMENSIONS
3 1 7 2 4 0 5 6 6 2
..
w '-ilii. 'ii.' i:i
i-
REAR
■■ All-siK;es have the same dimensions.
:! ’iiOTvEii' Flue is 5" for sizes SO & ilDO; ■ ^ ■
;. v - Flue is 6" for size 125 & 145. ^ ■
R A TIN OS AN D CAPACIT | E 5
-l-f-l
-1-
pW,-, ,
AGA RATINGS* BTU/HR
MODEL
NO;
”8Ti:a^ “^^647000^
. 100-348 I0i);000 ' j
42S-348- _..435_000^-^
145^348
*Pot elevations Up to 20Q0 ft; fori higher altitudes, reduce mtingh 4% ier:e&ch;;.lGQD^ft. above sea level.
tOn size l45 permanent type filter is supplied as standard equipment. :‘See note cotidaming ait flow under
Table II, this iristfucUon. . /'■
INPUT OUTPUT' ,
. :80;000 ■ 1/2 1/2
■—iOOjDOO,-:-
145,000 , 116; 000 1/2
GAS CONNECTION SIZE :
NAT. PROP.
"■ 172 . -
------
iy_2—. .
■—^/2'
- ¡1/2 ¡.
BUilT-lN ^
FILTER
^2tT^':25jt;T^"
20 X 25 X 1
-20 3t 1-^ .i‘ .
^20 X 25 -x^il T:
FLUE
SIZE
■^■'5
5 175
.:■■■ 6
SHIPPING
---
.......
APPROX.
WT.
rers”
185 .—
185
■ 34S
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F AX N o . 3 1 7 2 40 56 6 2
P . 0 03 / 00 8
SPECIAL LOCATING INFORMATION
Also see the following section on mounting
the unit.
For special cases, refer to paragraphs 3 .4.2
and 3.4.3, American Standard "Installation of
Gas Appliances and Gas Piping, " ASA Z21,30
-1964.
1. Do not install unit in closet or alcove,
2. A,G.A, certified clearances from com
bustible material:
Attic Furnace
From Draft Diverter 6" *
From Casing Surface Line Contact Allowed
From Base > Ú"
*When the furnace is mstalled in ^space large
in comparison to the furnace, reduced clear
ances are permissible when combustibles in
question are adequately protected.. ^
3" clearance permitted when 28 gauge sheet
damper is in the full heat or full cool position
5 . The unit should be located centrally with
respect to the air distribution system .Choose
a location that will be as near the chimney as
possible.
6 . For flexibility in selecting location of unit,
the draft hood may be rotated 180 degrees.
The manifold may also be rotated 180 de
grees . The controls may then be on either
side of the furnace. They may also be in the
vertical plane “ leading up or down from the
manifold.
7. The wiring box is mounted externally
alongside the draft hood. The wiring box is
designed for field mounting on either side of
the unit without breaking wiring connections .
MOUNTING THE UNIT
The unit may be placed directly on a combus-
.■tible;.;^ clearance requirements listed
should be observed.
O
to '.'the cpihbusLible "^materialxíánd ; coyjsrsíiail
cómbus tibie;, .Wi'thih-;J5
Lë''''îhatéri^D' '■■is''"'àpplied' ■tb'’"the
material::and:;;covers all surfaces within 6".
Other methods of protecting the combustible
,materiail'.a37e!:.':,ide ,in-.,T®ë''!^Ô,''Îlme
'èÿnl;Stanfe of Gas Appliances
and Gras P.i;ping, " AsA Z2i .30-1964*
3 . Service Access; Leave as much clearance
ad^posd'ible for service. The following is
considered mihimum:' ■
■■ '25 ■’':'at filter ■ end 'to replace.;filtdr
!' 6" at top for cleaning heat exchanger
4. Location with respect to codling equipment:
pf ,th,e cooling .unit to; avoid condensation in
d'^e; furnace, beating lelement.. -When ..installed
■^arallel.^yitb'.a poping,unit,^da.mpcrs or,other
meani^ used to control the flow of air mast be
adequate ^ tp. prevenf chilled air from entering
the. furnace . If the, dampers are manually
operated, they must be equipped with means
to prevent operation of either unit unless the
............... ■
...
.................
rsf'oteG'-'fhb^^^'^^^ 348'Hs A ;G.A. certified for
,painf,;d2r';iii:ie A^fth C'ombustible mater
ial' abdye : ei^pept "drait hood must
, ,be ;at .least anyvcombusti^^^ material.
.Mpreifha^ dr ; line contact is not ap
proved.- ;If >an installation Gonflicts with
A*.G.A< ^PP^^'oval, consult .local codes for
protective insulation requirements. See
Ameri,cap Ap“
plianc.ea ;and Gas Fiping, ASA^Z2^
The draft hood may be reversed, The mani
fold may be reversed . The control's may be
horizontal or vertical. See page 4.
If the unit is mounted so as to require shims
^(uneven, floor ox-craWl .space.).it must be .S;tip-_
porfed as shown in Figtire A. "When unit Is
suspended, the same kind of supjiort is re -
_quire.d.,_Riy^nt,.s.upplles..asj0pfipnaiivd.quipb\bnt_.
a suspension kit hs picturedthTi^rd B. The
_two __ chahhels, should' be plhce d 'Under the :iur_-
nace as ■ shown in The .¡Support for
the blower comparftheht "Is fastened the
channel and theh bent abound htid fastened to
the other end of the ciiaiiiiel shoWii in Fig
ure C . This in effect mabes a support erfending out under the blower, compartihenb. Note:
the hanging rods for ttie suspension bars musi
be supplied by the installer. See page 5.
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348
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