54
GAS-FIRED BOILER Boiler Manual
Function Value
d6 — Actual Fan speed multiplied by 10
(Example: If fan speed displayed is
|410| RPM x 10 = 4100 actual fan speed)
d7 — Actual Ionization current read from
Flame Rectification probe
d8 — Actual Status of the Central Heating
Circulator Off = |0|, On = |1|.
d9 — Actual Status of the Indirect Fired
Circulator Off = |0|, On = |1|.
d10 — Actual Status bus communication
|CO| = connected, |NO| = not connected
d11 — Central Heating Set Point
d12 — Power On Hours in thousands (display
will not read until 100 hrs.)
Example: Display x 1000 = Power on
Hours
12.3 x 1000 = 12300 Hours)
d13 — Total Central Heat Hours in Thousands
(display will not read until 100 hrs)
Example: Display x 1000 = Power on
Hours
12.3 x 1000 = 12300 Hours
d14 — Total Domestic Hot Water Hours in
Thousands (display will not read until
100 hrs)
Example: Display x 1000 = Power on
Hours
12.3 x 1000 = 12300 Hours
d15 — Passed Ignition Attempts in Thousands
(display will not read until 100 ignition
attempts)
Example: Display x 1000 = Power on
Hours
12.3 x 1000 = 12300 ignition attempts
d16 — This function only becomes active
when the Boiler is set as the Master. It
allows the user to monitor the System
Pump connected to the Master Boiler
and the connected boilers (Followers)
in a multiple boiler installation. Each
boiler firing output percent is
displayed. To toggle between values
press the {S1/
-
} to go down and the
{S4/RESET} key to go up. The first
function you will see is
System Pump - 0 off or 1 on
Master Boiler - P0 alternating (0-100 Percentage
firing rate)
Follower Boiler #1 – P1 alternating (0-100
Percentage firing rate)
Follower Boiler #2 – P2 alternating (0-100
Percentage firing rate)
Follower Boiler #3 – P3 alternating (0-100
Percentage firing rate)
Follower Boiler #4 – P4 alternating (0-100
Percentage firing rate)
Follower Boiler #5 – P5 alternating (0-100
Percentage firing rate)
Follower Boiler #6 – P6 alternating (0-100
Percentage firing rate)
Follower Boiler #7 – P7 alternating (0-100
Percentage firing rate
NOTE: If you toggle beyond parameters of con-
nected boilers, the display will go into the next
function value.
D. TEST MODE
This function is intended to simplify the gas valve
adjustment if needed. Listed below are the rec-
ommended limits on each Mod Con Boiler and the
Combustion Settings. Automatic modulation does
not take place when the controller is in Test mode,
only temperature limitation based on the Mod Con
Boiler Central Heating set point. The user will be
allowed to increase or decrease the fan speed by
pressing in either the {S1/
-
} or {S2/+} keys.
To activate the Test mode simply press the {S2/+}
and {S3/Program} key together for 1 second. Once
activated, you will see in the display {Ser} and the
actual fan speed. The measurement of the com-
bustion levels should always be taken at the high-
est and lowest fan speed. After 20 minutes, the
Test mode stops automatically. To exit Test Mode
press {S1/
-
} and {S2/+} key together for 1 second.
PART 10. START-UP PROCEDURE (CONTINUED)
COMBUSTION SETTINGS ON ALL MODELS
Natural Gas Propane LP
low high low high
Carbon Monoxide
(CO %)
0–20 ppm 70 ppm–135 ppm 0–20 ppm 80 ppm–150 ppm
Carbon Dioxide
(CO
2
%)
8½% – 9½% 8½% – 9½% 9½% – 10½% 9½% – 10½%
Fig. 10-1
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