| Installation
4-18
|
330985H01
1100°C Box Furnace
Chapter 4
120 VAC Mains Electrical
Models operate on detachable 120 VAC grounded plug and cord set. The units are
completely pre-wired ready for operation.
208-240 VAC Mains Electrical (excluding BF51728 and BF518728)
Models include a detachable 240 V grounded plug and cord set. The units are completely
pre-wired and ready for operation.
A furnace wired for 240 VAC operation can also operate on 208 VAC. 208 VAC heatup
and recovery times may be longer than 240 VAC.
208-240 VAC Mains Electrical (BF51728 and
BF51828 Only)
The BF51728 and BF51828 are 208-240 VAC furnaces and do not include a 240 VAC
grounded plug and cord set.
Furnace installation requires L1, L2, and ground wire (not provided). The required wire
size is 10 AWG for 23.3 Amps @ 240 V.
To connect the furnace to the power source, complete the following steps:
1. Determine the length of wire needed to connect the furnace to the power source.
2. Label the power wires Line 1 and Line 2 and label the ground wire Ground.
3. Remove the two outlet box cover screws. Remove the outlet box cover.
4. Use appropriate conduit and clamps for the service wire. Use wire nuts to connect
the wires to the appropriate lead wires:
5. Check that all electrical connections are secure.
6. Place the back panel on the furnace and secure with the corner screws.
NOTE Electrical installation must be performed by a qualified electrician.
Consult local electrical codes for proper sizing of power and control wiring.
Wire
Label
Line 1
L1
Line 2
L2
Ground
GND
NOTE Unit supplied with 7/8" Hole covered with a bushing that is sized for 1/2"
Conduit / connections per electrical standards. Utilize strain reliefs as needed.
CAUTION :
Failure to check thermocouple wiring connections before initial start up
could result in damage to the furnace.
Summary of Contents for BF51728
Page 11: ...Safety Notes Chapter 1 1 10 330985H01 1100 C Box Furnace...
Page 15: ...Introduction 2 14 330985H01 1100 C Box Furnace Chapter 2...
Page 27: ...Start Up 5 26 330985H01 1100 C Box Furnace Chapter 5...
Page 63: ...Maintenance 9 62 330985H01 1100 C Box Furnace Chapter 9...
Page 69: ...Wiring Diagram 10 68 330985H01 1100 C Box Furnace Chapter 10...