Mini-MOD & Mini-Extension Installation Manual 29
059040-00 C
boIler stage settIngs
Button:
STAGE/
The Stage menu offers the capability of adjusting each of the boiler's operation individually.
• In most installations, all active boiler adjustments are the same, but each can be configured
differently if desired.
• If the boilers are not set up properly, the Mini-MOD operation may appear to be erratic.
• When the
STAGE
button is depressed, the Boiler A Settings menu will be shown.
• Make all the appropriate settings for Boiler A (See below).
• After completing all the settings for Boiler A (See below), you have the option of copying
these settings to all other boilers. Everything but the Mode -- Auto/Standby/Manual/Off/On
-- will be copied.
• Then select the Next Stage option from the menu to bring up the Boiler B Settings menu
and make all the settings. Continue until all boilers have been set.
• If a Mini-MOD Extension is connected to the Mini-MOD, scrolling through stages using the
Next and Prev Stage menu options will scroll through the Mini-MOD Extension stages as
well.
alert
To be able to change the Mini-MOD settings, the Program/Run Switch must be set
to Program. The switch is located under the Enclosure Wiring Cover for security.
The Enclosure Wiring Cover can be securely closed using a lock.
-STAGE A SETTINGS-
Mode
Off
Ignition%
1%
Mod Start
75%
<Prev Stage>
<Next Stage>
Copy Settings
BACK
▲
▼
SELECT
alert
Remember to set the Mode
for each stage. For Stages
that do not have a boiler,
contractor must change their
Mode to OFF. Otherwise the
Mini-MOD will include them in
the modulation calculation and
rotation. That might have dire
effects on system response.
SYSTEM
A
B
C
D
Full Modulation Sequencing Control
1 2
RUN
PROGRAM
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
115VAC 60Hz , 12VA MAX
INPUT RATINGS:
USE COPPER CONDUCTORS ONLY
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
3 4 5 6 7 8 9 10 11 12
13
15
14
17
16
18
22
20
19
21
24
23
29
25
27
26
28
32
30 31
L N
-
+
+
T
T
O
O
RS-485
mA
GND
VLT
SYS
A
B
C
D
PWR
CUR / VLT
A
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
+
mA
TEMP
OUTDOOR
O
O
TEMP
SYSTEM
EXTENSION
MODULE
CUR / VLT
B
CUR / VLT
C
CUR / VLT
D
CAUTION
: RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
PROVE
/DHW
SHUTDOWN
/TSTAT
/SETBACK
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
99RA
Mini-MOD
Mode
Auto, Standby, Manual, Off, On
Default: Auto
Button:
STAGE/Mode
• The Mini-MOD only controls the modulation of boilers set to Auto or (after a delay) those
set to Standby. None of the other settings are recommended for output boilers connected to
active units.
• Any boiler without an active unit connected must be set to Off.
• The following list describes the MODE options:
- STAGE A MODE -
Auto
Standby
Manual
Off
On
BACK
▲
▼
SELECT
Auto
- The Mini-MOD will control the boiler’s operation to maintain the desired Set Point. Only boilers set to Auto can be Lead
boilers.
Standby
Standby boilers can only be activated when all boilers in Auto have been at 100% modulation for a selectable period of
time. Standby is generally used when you want a specific boiler to be available in extreme load conditions. Note that a
Standby boiler Cannot be a Lead boiler.
Manual
The Manual Mode should only be used when testing a boiler. Manual overrides the Prove input. The exact percent of
modulation for a boiler can be set with the Manual mode. Once selected, the unit will immediately turn on and modulate to
the selected percentage.
Off
Any output Boiler A through D not connected to a physical unit should be set to Off. The Off Mode can also be used to
disable units that are being serviced.
On
The On Mode should only be used when testing a boiler. The On Mode overrides the PROVE input. Once set to On the
boiler will immediately start firing and modulate to 100%.
