Steffes 9180 - Manual (Page 5)

General oPeration
The ThermElect Hydronic heating system stores de-
mand 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,
utility peak conditions, and/or the heating require-
ments.
A heat call from the thermostat or main system control
energizes the primary water loop pump. The vari-
able 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 ap-
plications. 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, Stef-
fes 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 or equipment damage.
SySteM Start-uP
On start-up of the ThermElect Hydronic system, odors relating to first time operation of the heating components
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 com-
ponents 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.
T
herm
e
lecT
h
ydronic
o
peraTion
 1.01
operation
1
o
per
ation
SUPPLY
WATER
WATER
RETURN
VARIABLE SPEED
CORE BLOWER
MOTOR ASSEMBLY
225° AUTO
RESET LIMIT
250° MANUAL
RESET LIMIT
AIR TO WATER
HEAT EXCHANGER
HEAT
STORAGE
BRICK
HEATING
ELEMENT