Product Overview

47
103859-12 - 8/19
MPO-IQ
Installation & Service Manual
burner will stop. When water level is replenished,
the burner will restart.
8. On burner start, if the cad cell does not see flame
during the trial for ignition, the oil primary control will
shut the burner down and enter into a hard lockout.
The Oil Primary must be reset manually before the
burner can be restarted.
B. USING BOILER CONTROL
The Boiler Control is located under the Jacket Front
Cover, to the left of the Option Panel (Refer to Figure
33).
The Boiler Control display, along with Up ñ, Down
ò, and “I” keys may be used to view boiler
operating status (Figure 34). Please note that these
keys look similar to the keys on the Option Panel
but are in a different orientation, and they perform
different functions.
Operating Mode Options
StA
Status (see Status Number in following Table)
bt
Boiler Temperature
SP
Operating Setpoint (Outdoor Reset)
HL
High Limit Setting
HdF
High Limit Differential
hr
Heat Request Status
dh
Zone Request Status
CAD*
CAD Cell Ohms
rUn*
Run Time Hours
CYC*
Boiler Cycles
Err
Boiler Error
Erp
External Device Error
* Visible when Burner-ECOM Harness is connected to
EnviraCOM primary equipped burner. Refer to Figure 28B for
installation details.
Status Number Displayed in STA Mode
1 Standby
4* Pre-purge
6* Trial for Ignition
7* Carry Over
8 Running
9* Post-purge
10* Retry/Recycle Delay
14* Hard Lockout
15* Waiting for Limit to Close
16* Flame Present Out of Sequence
17 Self Test
For example, when the “I” key is pressed on the
Boiler Control until “bt” is displayed, it will then flash
a three digit number (such as “180”) followed by
either “F” (or “C”). This indicates that the boiler water
temperature is 180°F. Other operating parameters
display the information in a similar fashion.
Unit Display
OR
Sample
Display
1 sec
1 sec
1 sec
Please note that in operating mode to hold the
display on the value the user can press and hold
either the Up ñ or Down ò keys and the value will
be continuously shown. This may be helpful in
watching a value “live”.
Figure 34: Boiler Control
Key Function & Orientation
C. VIEWING THE OPERATING MODE OPTIONS
In operating mode the user may view (but not
change) boiler operating status, settings and
troubleshooting information. To view Boiler Control
display information:
Press and release the “I” key on the Boiler Control
to change from one parameter to the next. Each
setting will alternately flash between the relevant
display code and its corresponding value.
9 Operating (continued)