MODEL FIII-SERIES CONTROL INSTALLATION ... - Agencespl.com
MODEL FIII-SERIES CONTROL INSTALLATION ... - Agencespl.com
MODEL FIII-SERIES CONTROL INSTALLATION ... - Agencespl.com
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REV 1.1<br />
<strong>FIII</strong> <strong>SERIES</strong> <strong>CONTROL</strong><br />
LOCAL ADDRESS 255 (2 –16) The local address is the address of a member device.<br />
This is normally in the range of 2 through 16. But if<br />
the <strong>FIII</strong>-series control is a MASTER, then the<br />
default address is 255. The LOCAL ADDRESS # is<br />
synonymous with boiler #.<br />
CONSOLE ADDRESS 1 (1 – 247) The console address is for <strong>com</strong>municating with<br />
Laptop, PC, or other MODBUS capable device. It is<br />
the 2 nd <strong>com</strong>munication port reserved for a host<br />
control.<br />
MODULAR BOILER SET<br />
ADD BOILER DELAY 10mins (0 – 15min) This is the delay time in 30sec intervals, before starting a new<br />
boiler. Boiler #1 is started immediately after a call for heat.<br />
If a second boiler needs to start, the ADD BOILER<br />
DELAY will need to expire before starting.<br />
SHED BOILER DELAY 2mins (0-15min) This is the delay time in 30 second intervals, before stopping a boiler.<br />
MODULATE DELAY TIME 10 secs (0 – 60min)<br />
This is the time the boiler remains in min-fire before it relinquishes<br />
control to the modulation % signal.<br />
MOD MAX – LAST FIRE 80% (25 – 100%) This is the “INPUT CLAMP” message displayed in the STATUS<br />
screen when an ‘*’ is displayed. This value represents the % of<br />
output on all boilers if the last boiler is not firing. Once the last<br />
boiler fires, this clamp is removed and all boilers are allowed to<br />
modulate up to 100%. This value is derived by (Maximum fire rate<br />
of a boiler – Minimum fire rate of a boiler). In mixed boiler size<br />
configurations, more than (2) boilers in a system, or when “bumps”<br />
in the temperature occur as boilers are added and subtracted, this<br />
value may need adjustment. The adjustments will help produce<br />
smooth temperature control when each boiler is started and stopped.<br />
This method ensures that, once a new boiler starts to fire, and holds<br />
its fire rate at the minimum setting, it does not add its BTU output to<br />
a boiler already firing at 100%. The boilers can’ t be fired starting @<br />
0%, but start at a minimum (example: 20%) and introduce a<br />
minimum amount of BTUs into the system.<br />
STOP BAND OFFSET 5° F (0 - 50F) The value used to prevent short cycling when in the temperature<br />
control band. If a boiler was just added and has not finished its<br />
modulation delay period and is within 5° F of the top of the band,<br />
the boiler will stop early.<br />
BOILER START TIME 50 secs (0 –4min) The time it takes from when a call-for-heat is received to the time the<br />
boiler begins its modulation delay (running at min fire). It is required<br />
to predict starting the boiler early and when starting the last boiler<br />
when the input clamp is in effect.<br />
MODULATION PID<br />
(P) ROPORTIONAL 100 (0 – 100) Proportion constant<br />
(I)NTEGRAL 10 (0 – 100) Integral constant<br />
(D)ERIVATIVE 10 (0 – 100) Derivative constant<br />
BAND 100° F (40 – 200F) Temperature band that is used much like the proportional band<br />
FIRING MODE<br />
LAST ON FIRST OFF LOFO Used to provide firing rotation of the boilers for<br />
FIRST ON FIRST OFF FOFO equalizing run times.<br />
SENSORS<br />
SENSOR #<br />
NOTE: sensors can only be changed with no-call-for-heat<br />
The first (4) sensor #’s are reserved as: OUTSIDE AIR, water<br />
SUPPLY outlet, water RETURN inlet, and system HEADER<br />
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