STEP + - STORE STEP + - STORE
+ Short
Shows supply set point
when responding to call
for heat (Note 1)
c 190
1
DHW reference set
point (Note 2)
68°F - 144°F (Default
Setting 135°F)
1 Supply water temperature
1.170
+ Long Turn heating on/off
c OFF
0 = Off 2 Return water temperature
2.135
- Short
Shows domestic hot water
reference set point (Note
2)
d 144
1 = On 3 Reserved for Future Use
3.-22
- Long
Turn domestic hot water
on/off
d OFF
2 = Off + continuous
pump
4
Outdoor sensor temp., if
used (Note 5)
4.-22
MODE
and
+
Long
Hold burner in high fire
(Note 3)
H 180
3 = On + continuous
pump
5 Flue gas temperature
5.165
MODE
and
-
Long
Hold burner in low fire
(Note 3)
L 180
0 = Off 6
Supply water set point
temperature
6.180
+ and - Long
Deactivate forced high or
low firing
O 180
1 = On
2 = Off + continuous
pump
3 = On + continuous
pump
9 Reserved for Future Use
9. 0 1
A Reserved for Future Use
A. -22
Notes
1) If outdoor sensor is connected, this temperature is the supply temperature setpoint when the outdoor temperature is 0°F.
2) "Domestic water reference set point" + 45°F = boiler supply set point when boiler is responding to a call for domestic hot water (default = 180°F).
3) Boiler will automatically resume modulation after 15 minutes.
4) Factory default settings are shown in bold.
5) If no outdoor sensor is connected, display reads "4.-22".
Not Used
Increases Setting
Decreases Setting
Saves new setting to MCBA. Display will Flash when STORE is released indicating that
change has been made
7
8
4
Supply set point
when responding to
call for heat
68°F - 190°F (Default
Setting 180°F)
Toggle Between Parameters
2 DHW Zone
3 Heat Zone
INFORMATION MODEPARAMETER MODE
Use of Keys
Possible Settings
(Note 4)
DescriptionParameter
Use of Keys
Rate of change in supply
water temperature °F/sec
Rate of change in return
water temperature °F/sec
7. 0 1
8. 0 1
Step #
Toggle Between Steps 1 - A
Not Used
Not Used
USE MODE KEY TO TOGGLE BETWEEN MODES
FIGURE 11.2: BASIC MENU TREE
Value
Display
Example
Result
Display
Example
Use of
Keys
Duration
(Mode returns to Standby from other modes if no key is pressed for 20 min.)
STANDBY MODE
