Steffes 6140 - Manual (Page 8)

Optional Accessories
2
LOAD MANAGEMENT CONTROL
The Comfort Plus Commercial system is an Electric Thermal Storage (ETS) heating system using electricity to
provide a low cost heating solution for commercial, industrial, and large residential applications. ETS equipment is
designed to store electricity, as heat, during hours when energy costs are lower and kW demand charges are not
incurred. The Comfort Plus Commercial's thermal mass consists of a high-density ceramic brick capable of vast
heat storage. The system is designed to operate under various load management control strategies, some of which
are listed below:
1. BACNet Control
Steffes commercial heating furnaces are available with a BACNet control option. This device is easily
integrated into most building automation systems to provide building managers
full control and visibility of the heating system’s operation. BACNet allows the
following functions to be monitored with simple, twisted pair communication:
· Real time system monitoring
· Full thermostat control
· Monitoring of heat storage levels in the brick and all system temperatures
· Remote configuration, testing and adjustment
· Service requirement alerts
2. On-Peak/Off-Peak Program
System responds to heat calls during the on-peak and off-peak periods; however, only energizes heating
elements during the off-peak periods. The Comfort Plus Commercial system is controlled by an external
control device such as a meter or time clock module.
3. 4-20 Milliamp Control (1-5 volt DC)
System receives a signal from an external load control device such as a building load management system.
This external signal dictates the maximum amount of energy which can be consumed during a preset time
interval.
4. Pulse Monitoring
a) System monitors pulse outputs from the power company's electric meter.
Program parameters such as desired maximum building kW and pulse
ratios for the metering system being used are entered into the Comfort Plus
Commercial system. The system then charges proportionally when demand
free power is available. This keeps the total building kW usage at or below
the desired level.
b) External load management control modules are available when using pulse
monitoring load control. Each module has eight (8) zones which can be
controlled. The system must be configured to recognize the number of load
management modules installed (maximum of two per system).
SINGLE FEED KIT (208/240V ONLY)
The Comfort Plus Commercial 6140 has built-in circuit breakers. They are factory configured to be field con-
nected to multiple line voltage circuits. If single feed to the element and blowers/control circuits is desired, the
single feed kit is available to allow the system to be powered with a one, larger line voltage circuit. Contact the
factory for ordering details.
277/480V and 347/600V systems are factory configured for single feed connections only. A
step-down transformer is required for the control circuit in these systems.
Optional
Accessories
Optional Accessories
n
2.01 Comfort Plus Commercial
LOAD MANAGEMENT
CONTROL MODULE
Order Item #1908140
BACNET
Order Item #1301015