28
Heat-Timer Corp.
059040-00 C
confIguratIon
Button:
MENU/<Maintenance>/<Configuration>
• The configuration menu displays a consolidated view of the Startup settings.
-- CONFIGURATION1 --
v 1.03
Reset
o
F
Normal
Day/Night Schedule
All Off
BACK
NEXT
-- CONFIGURATION2 --
A=4-20ma
B=0-10V
C=0-5V
B=0-10V
BACK
EXIT
dIsplay
The Mini-MOD display layout provides a variety of information that gives an immediate picture
of the operation status. The display shows four boilers at a time. When extensions are present,
the two middle buttons (◄ ►) scrolls the screen to view additional boilers. Moreover, all the
information displayed can be viewed in brightly or dimly lit rooms.
• The buttons' functionality changes based on the screen and menu level. The buttons'
functionality is displayed on a dark background on the screen bottom line.
• (◄ ►) Horizontal arrows are to scroll through the available stages.
• (▲ ▼) Vertical arrows are to scroll through the menu functions when in menus or to change
values of settings when in its specific screen.a
• The Top line displays the available sensor values.
• The second line displays the Target set point. However, it will
display any messages pertaining to the operation or status.
• The third line will list the boiler stages. Any additional stages can
be scrolled to using the two middle buttons. The Lead boiler letter
will be bracketed. See "Lead Boiler Rotation" on page 23.
• The fourth line lists each boiler modulation status. See Display
Boiler Modulation Status for possible status.
SET POINT
OD=
35
F SYS=
98
F
Prepurge Delay:67
A B C D
50% 15% --- ---
STAGE
MENU
Outdoor Temp
System Temp
Message Display Line
Boilers and their
Modulation Status
Button functions
Button
dIsplay boIler ModulatIon status
The Mini-MOD boiler modulation status gives immediate access to each boiler status. The following list show all possible boiler
status:
• ---
Boiler is off due to no call for heat.
• 97%
Boiler is modulating at the indicated percentage.
• ON
• OFF
Boiler Stage Mode is set to OFF and boiler stage is unavailable or boiler does not exist. See "Mode" on page 29.
• m95%
Boiler Stage Mode is set to Manual and set to the specified percent. See "Mode" on page 29.
• C/E
Boiler on Extension panel is NOT communicating to the Mini-MOD. See "Connecting Extension Panels" on page 16.
dIsplay Messages
The Mini-MOD normal display layout reserved the second line for message indications. The following is a list of the most common
Message Display Line information:
• DHW Call (171˚F) There is a DHW (Domestic Hot Water) call. The Mini-MOD will Raise the system Set Point to the indicated
temperature. DHW increases calculated temperature to the DHW Set Point.
• Lag Delay: 123
The lead boiler is at 100% and the remaining purge time to start the lag boiler in seconds is 123. See "Lag
• Holding Until 150˚F The Lead boiler is in Last Stage Hold. This example shows that the lead stage will turn off when system
temperature reaches 150˚F. See "Last Stage Hold" on page 24.
• Prove Failure
After boilers have run for a while, Prove signal was opened. The boiler relays will de-energize. However,
the System relay will remain energized. See "Prove/Domestic Hot Water (DHW) Priority" on page 18.
• Purge Delay: 23
The current boiler is in purge and the remaining purge time is 23 seconds. See "Purge Delay" on page 23.
• Shutdown Active
• Shutdown by EMS The EMS is below 2mA or above 22mA. See "External 4-20mA Set Point using" on page 34.
• Summer
The control is set to Summer. No heat is active. See "Season" on page 20.
• Run-On: 46
The System relay is ON for the Run-On Delay. This example shows that it will remain in Run-On for an
additional 46 seconds before turning off. See "Run-On" on page 24.
• Tstat Call
The Tstat Terminals are Shorted. Boilers will be active.
• Waiting for Prove The System relay is ON and the prove terminals are open before the lead boiler relay can energize. See
