Bryant 915SB, Инструкции по установке, запуску, эксплуатации, обслуживанию и техническому обслуживанию

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2. Align the J--Box bracket with the pilot holes inside the
furnace casing.
3. Install 2 screws through the outside of the casing to secure
the J--Box bracket to the furnace casing.
4. Route field power wiring into external electrical box.
5. Pull furnace line voltage power wires through strain--relief
bushing of the external electrical box.
6. Pull the ground wire of the field line voltage wiring through
the strain--relief bushing into the furnace casing.
7. Install the green ground screw to the J--Box bracket and
attach both ground wires to the green ground screw.
8. Connect any code required external disconnect(s) to field
power wiring.
9. Connect field power and neutral leads to furnace power
leads inside the external electrical box as shown in Fig. 34.
Power Cord Installation in Furnace J--Box
NOTE : Power cords must be able to handle the electrical
requirements listed in Table 11. Refer to power cord
manufacturer’s listings.
1. Install J--Box mounting bracket to inside of furnace casing.
See
Fig. 34
.
2. Route listed power cord through 7/8--in. (22 mm) diameter
hole in casing and J--Box bracket.
3. Secure power cord to J--Box bracket with a strain relief
bushing or a connector approved for the type of cord used.
4. Pull furnace power wires through 1/2--in. (12 mm) diameter
hole in J--Box. If necessary, loosen power wires from
strain—relief wire--tie on furnace wiring harness.
5. Connect field ground wire and factory ground wire to green
ground screw on J--Box mounting bracket as shown in Fig.
34.
6. Connect power cord power and neutral leads to furnace
power leads as shown in Fig. 36.
7. Attach furnace J--Box cover to mounting bracket with
screws supplied in loose parts bag. Do not pinch wires
between cover and bracket. See Fig. 34.
BX Cable Installation in Furnace J--Box
1. Install J--Box mounting bracket to inside of furnace casing.
See Fig. 34.
2. Route BX connector through 7/8--in. (22 mm) diameter
hole in casing and J--Box bracket.
3. Secure BX cable to J--Box bracket with connectors ap-
proved for the type of cable used.
4. Connect field ground wire and factory ground wire to green
ground screw on J--Box mounting bracket as shown in Fig.
34.
5. Connect field power and neutral leads to furnace power
leads. as shown in Fig. 36.
6. Attach furnace J--Box cover to mounting bracket with
screws supplied in loose parts bag. Do not pinch wires
between cover and bracket.
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in dangerous
operation, personal injury, death, or property damage.
Do not drill into blower shelf of furnace to route control
wiring. Route any control or accessory wiring to the blower
compartment through external knockouts on the casing.
!
WARNING
Representative drawing only, some models may vary.
115-V FIELD-
SUPPLIED
DISCONNECT
AUXILIARY
J-BOX
24-V
TERMINAL
BLOCK
THREE-WIRE
HEATING-ONLY
FIVE WIRE
NOTE 1
NOTE 2
FIELD-SUPPLIED
DISCONNECT
CONDENSING
UNIT
TWO
WIRE
FURNACE
C
O
N
T
R
O
L
R
G
COM
W C R G Y
GND
GND
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
BLOWER DOOR SWITCH
WHT
BLK
WHT
BLK
NOTES: Connect Y-terminal in furnace as shown for proper blower operation.
Some thermostats require a "C" terminal connection as shown.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
W
Y
GND
THERMOSTAT
TERMINALS
1.
2.
3.
A190079
Fig. 36 -- Typical Single--Stage Wiring Diagram