Steffes 7140 - Manual (Page 6)

Operation
n
1.02 Comfort Plus Commercial Hydronic
Operation
CONTROL PANEL
FIGURE 1
M M
P P
M
M M
A A
CONTROL PANEL
Operation of the Comfort Plus Commercial Hydronic system is automatic. All
operational functions are stored in its microprocessor in function locations and are
factory preset. If necessary, the installer can adjust them through the control panel.
(See Figure 1.)
Four-Digit LED Display
The four digit LED displays specific operating information. During an editing
process, the function locations and the values set in these locations are displayed for
viewing and adjusting purposes.
AM and PM Indicator Lights
The AM and PM indicator lights are only utilized if the Steffes Time Clock Module is being installed. With this
module installed, the system displays time on AM/PM intervals and the corresponding light flashes. The system
can be configured to display military time, in which case both the AM and PM
lights illuminate.
Mode (Edit) Button
Activates the editing menu for changing the operating information of the
system.
Up and Down Arrow Buttons
Used to scroll up or down when viewing or changing
operating functions.
Interface Port
FOR SERVICE USE ONLY! Allows technician external access for updating software and troubleshooting.
OPERATING STATUS
The Comfort Plus Commercial Hydronic system is set to display various operating information as described below.
Press and release the up arrow to view this data.
Operating Mode - Indicates the current operating mode of the system.
C = Off-Peak (Charge) Time
P = On-Peak (Control) Time
A = Anticipated Peak Time
Outdoor Temperature -“O” followed by a number indicates current outdoor temperature.
Heat Call Status - Indicates the current heat call status being received from the room thermo-
stat. Refer to pages 3.11 and 3.12 for more information on heat call inputs.
Brick Core Charge Level - “CL” (charge level) followed by a number indicates the current
percentage of heat stored in the brick core. “CL:_” represents zero percent and “CL: F” repre-
sents a full core charge level.
Targeted Brick Core Charge Level - “tL” (target level) followed by a number indicates the
current percentage of brick core charge being targeted by the system. A display of “tL:_” indi-
cates a target level of zero percent and “tL: F” indicates a full core charge target level.
Load Control - Current demand (kW) divided by 10. A value of “d 75” is equal to a demand of
750kW.
A bar illuminates on the lower portion of
the display's second digit whenever one
or more heating elements are energized.
CAUTION
Editing operating
information may alter
the performance and
operation of the system.
с т
M