Steffes 6140 - Manual (Page 5)

GENERAL OPERATION
The Steffes Comfort Plus Commercial heating system stores
demand free and/or off-peak electricity in the form of heat.
Off-peak electricity is available during times of the day or night
when electricity is plentiful and the associated costs are low.
Operation of the heating system is automatic. During off-peak
hours, the system converts electricity to heat which is then
stored in its ceramic brick core. The amount of heat stored in
the brick core varies in relation to outdoor temperature, current
building load, utility peak conditions, and/or the heating require-
ments.
A heat call from the thermostat or main system control ener-
gizes the blowers in the system. The variable speed core blow-
ers automatically adjust their speed to circulate air through the
brick core. The supply air blower then delivers the heated air
into the desired area through the duct system to maintain a
constant, comfortable temperature.
The versatility of this system allows it to fit many applications. The system is designed for use as either a sole
heating source (“stand alone” furnace) for make up air heating or as a supplement to another ducted heating
system such as a heat pump.
SYSTEM USE DURING CONSTRUCTION PHASE
Like most heating equipment manufacturers, Steffes strongly recommends that “Construction Heating Units” be
used instead of the permanent heating system during the construction phase. Use of the permanent heating system
during this phase may contaminate the duct system and/or internal areas of the heating system. This may cause
poor indoor air quality issues and/or improper system operation once the building is completed. A suitable alterna-
tive heating system must be used during the construction phase.
SYSTEM START-UP
On start-up of the system, odors relating to first time operation of the heating components may be experienced. If
not used for an extended period of time, dust may accumulate in the system. Allow the Comfort Plus Commercial
heating system to charge to its maximum brick core charge level to expel odors in a timely manner.
As with most heating systems, air borne particles and odors in the room may be drawn in and oxidized. Odors can
be amplified; thus, it is not recommended to operate the system if odors such as those from paints,
varnishes, or chemicals are present in the air. Air borne particles, which have been oxidized, are expelled
back into the room and may accumulate on air vents or other surfaces. Over time, these particles may appear as a
black residue, commonly referred to as soot. High concentrations of air borne particles from aerosols, dust, candles,
incense, pet hair, smoke, or cooking can contribute to poor indoor air quality and accelerate the sooting process.
During operation, the heating system may produce minor expansion noises. These noises are the result of the
internal components reacting to temperature changes.
TURNING SYSTEM "OFF" AND "ON"
The system is fully automatic and does not need to be manually disabled. Talk to your installer or energy manage-
ment person for additional information.
Comfort Plus Commercial Operation
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Operation
Operation
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