Steffes 5140 Owner & Installers Manual - Manual (Page 38)

Appendix  A.13 Comfort Plus Hydronic
GloSSary
Air Separator ~ Device used to remove air from
the water so the air does not get into the closed loop
system and cause damage to other components or
prevent water circulation.
Air Vent ~ Device used to release air from the
system. The air vent is generally mounted on top of
the air separator.
Anticipated Peak ~ Used as an alternative method
of storing heat in the brick core. Indicated by an "A"
on the system display.
Automatic Charge Control ~ Method of brick
core charge regulation where a sensor monitors
outdoor temperature and automatically adjusts the
brick core charge target level accordingly. As the
outdoor temperature drops, the target level rises.
Brick Core Charge level ~ The amount of heat
stored in the brick core of the system.
Charge Period ~ Off-peak time in which the system
is allowed to store heat in its brick core. Indicated by a
"C" on the system display.
Control Panel ~ Contains the buttons to adjust and
the display to indicate system functions. Located on
the front of the system.
Control Period ~ On-peak time in which the system
is not allowed to store heat in its brick core. Indicated
by a "P" on the system display.
Edit Mode ~ Process of changing or viewing
the values in a microprocessor location. This is
accomplished with the use of the mode button, the up
arrow button, and the down arrow button.
Expansion Tank ~ When water is heated, expansion
takes place. The expansion tank stores the excess
water to maintain proper pressure in the system. In
most applications, the expansion tank should be
installed prior to the pump for optimum performance.
location (Function) ~ Where the specific operating
information of the system is stored. These locations
are part of the microprocessor and are accessed
through the control panel. Displayed as an "L" on the
faceplate when in the edit mode.
location Value ~ The specific information set and
stored in a location on the system's microprocessor
which defines system operation. A value for a specific
location is accessed through the control panel.
Manual Charge Control ~ Method of brick core
charge regulation where the owner must periodically
adjust the brick core temperature setting in relation to
the outdoor temperature.
Microprocessor ~ Device on the circuit board of the
system which stores and processes the information for
controlling the operation of the system.
Off-peak ~ The time during the day or night when
the power company can supply electricity more
economically and may offer a special incentive such
as a reduced electric rate or billing credits for the
electricity consumed during this time. Typically,
electrical usage is not controlled during an off-peak
time. (The system will provide heat to satisfy comfort
requirements during this time as well as charge or store
heat in its brick core.)
On-peak ~ The time during the day or night when
the power company experiences a high demand for
electricity. To limit demand, certain appliances are
controlled to avoid usage by them and/or a premium
for the electricity consumed during this time may be
charged to discourage electrical usage. (The system
is not allowed to charge or store heat in its brick core
during on-peak periods.) Indicated by a "P" on the
system display.
Outdoor Sensor ~ Device that senses outdoor air
temperature and communicates this information to the
system for automatic charge control.
Pressure relief Valve ~ Device that protects the
system against the dangers of thermal expansion. If
system pressure exceeds normal operating conditions,
the relief valve opens and releases excessive pressure
from the system.
room Temperature Set Point ~ The targeted
room temperature the system is to maintain. If the
thermostat(s) senses a temperature below this point, a
heat call is initiated.