Direct Venting; Removal Of Existing Furnaces From Common Vent Systems - Bryant H Series Installation, Start-Up, And Operating Instructions Manual

VOLTS—
UNIT
HERTZ—
SIZE
PHASE
024040 115-60-1
036040 115-60-1
024060 115-60-1
036060 115-60-1
048060 115-60-1
036080 115-60-1
048080 115-60-1
060080 115-60-1
048100 115-60-1
060100 115-60-1
060120 115-60-1
060140 115-60-1
* Permissible limits of voltage range at which unit will operate satisfactorily.
† Unit ampacity = 125 percent of largest operating component's full load amps plus 100 percent of all other potential operating components' (EAC, humidifier, etc.) full load
amps.
‡ Length shown is a measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
** Time-delay type is recommended.
ELECTRIC
DISCONNECT
SWITCH
Fig. 28—Disconnect Switch and Furnace
NOTE: A field-supplied, 115-v controlled relay connected to
EAC terminals may be added if humidifier operation is desired
during blower operation.
IX. DIRECT VENTING
The 350MAV Furnaces require a dedicated (one 350MAV furnace
only) direct-vent system. In a direct-vent system, all air for
combustion is taken directly from outside atmosphere, and all flue
gases are discharged to outside atmosphere.
A. Removal of Existing Furnaces from Common
Vent Systems
When an existing Category I furnace is removed or replaced, the
orginal venting system may no longer be sized to properly vent the
TABLE 4—ELECTRICAL DATA
OPERATING
VOLTAGE RANGE
Max* Min*
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
127 104
COPPER
WIRE ONLY
ALUMINUM
WIRE
A93033
MAX
UNIT
UNIT
AMPACITY†
AMPS
6.1 8.4
7.3 10.0
6.1 8.4
7.1 9.8
9.5 12.8
7.6 10.4
10.0 13.4
14.1 18.4
10.2 13.5
14.8 19.3
14.6 19.1
14.3 18.8
ALTERNATE
FIELD
LOCATION
remaining attached appliances. An improperly sized Category I
venting system could cause the formation of condensate in the
furnace and vent, leakage of condensate and combustion products,
and spillage of combustion products into living space, etc.
—21—
MIN MAX WIRE
WIRE LENGTH
SIZE (FT)‡
14 44
14 37
14 44
14 38
14 29
14 36
14 28
12 31
14 27
12 30
12 30
12 30
Fig. 29—Relocating J-Box
MAX FUSE
OR CKT BKR
AMPS**
15
15
15
15
15
15
15
20
15
20
20
20
FACTORY
INSTALLED
LOCATION
A00212