Steffes 2102 - Electrical Connections, Wiring, and Configuration

LINE VOLTAGE ELECTRICAL CONNECTIONS
Steffes room heating units are available for connection to various input
voltages. Standard conguration for direct wired heaters is 240V; cord-
connected heaters are congured to plug into a 120V wall outlet. To
determine the conguration of the heater, refer to the Unit Identication
Label on the lower left side panel. (See Figure 4.) All heaters are UL and
cUL safety listed.
DIRECT WIRED ROOM HEATING UNITS
In standard conguration, the charging circuit of the heater is wired for connection to 240V/208V. If connecting to
208V, the heater will operate at 75% of its rated wattage. The blower and controls circuit in the heater is congured
for 240V. If the control circuit is to be connected to 120V or 208V, contact the factory.
Field Connection Wire and Circuit Breaker Sizing Guide
All 2100 series heaters are equipped with a two-circuit element feed option and a fan/control circuit (Figure 5 on page
2.05). Refer to the Unit Identication Label for proper sizing of each circuit. If single-feed connection is used, size
the circuit for total wattage. (Charge Crct #1 + Charge Crct #2 + Fan/Cntrl Crct = Total Wattage.)
2100 Series Installation 2.04
Sample Unit Identication Label
Figure 4
HAZARDOUS VOLTAGE:
Risk of electric shock. Can
cause injury or death. DO
NOT energize the heater
until installation is complete.
Equipment must be installed
byaqualiedtechnicianin
accordance with applicable
local, state, and national
codes and regulations.
WARNING
Use copper wire rated at 75
o
C minimum only.
This eld connection wire and breaker size guide reects only the code interpretation of Steffes. It
is the responsibility of the installer to comply with all applicable codes and regulations.
Maximum kW
Wire Size
240 VAC
277 VAC
208 VAC
Maximum Circuit
Breaker Size
#14 AWG
2.8
3.3
2.4
15
#12 AWG
3.8
4.4
3.3
20
#10 AWG
5.7
6.6
4.9
30
#8 AWG
7.6
8.8
6.6
40
#6 AWG
11.5
13.2
9.9
60