Steffes 7140 - Manual (Page 5)

Comfort Plus Commercial Hydronic Operation
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1.01
Operation
Operation
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GENERAL OPERATION
The Comfort Plus Commercial Hydronic system stores demand free or off-peak electricity in the form of heat.
Operation of the heating system is automatic. During hours when energy costs are lower the system converts
electricity to heat which is then stored in its ceramic brick core. The amount of heat stored in the brick core of the
system varies in relation to outdoor temperature, current building load, utility peak conditions, and/or the heating
requirements.
A heat call from the thermostat or main system control energizes the primary water loop pump. The variable speed
core blower automatically adjusts its speed to achieve the desired outlet water temperature. The heated water is
then pumped to the area (zone) from which the heat call originated.
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 of a new home. Use of the perma-
nent heating system during the construction 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 home is
completed. A suitable alternative heating system must be used during the construction phase.
SYSTEM START-UP
On start-up of the Comfort Plus Commercial Hydronic, odors relating to first time operation of the heating compo-
nents may be experienced. Allow the system to charge to its maximum brick core charge level, on start-up, to
expel these odors. If the system has not been used for an extended period of time, dust may accumulate in the
system. Upon restart, there may also be an odor as these dust particles are expelled.
During operation, the system may produce minor expansion noises. These noises are the result of the internal
components reacting to the 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.