RBI FUTERA XLF Series, Control Manual

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DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3
Page 96
MIN OFF TIME 0 0-10m
This is the time in minutes that the boiler must remain OFF before it
can be fired again. Very effective in dynamic systems to minimize
short cycling of a boiler and force the call to the next boiler (with
next shortest runtime if True Runtime is used)
FIRING PRIORITY: 2 1 or 2
There are (2) Priority settings used by the MIXED boiler rotation
algorithm. Priority 2 is the default and lowest priority. Priority 1
Is the highest priority. A Priority may be assigned to a set of boilers
which fires and rotates based on time and is independent of the other
Priority set.
PREDICT START: YES YES/NO
YES: Predicts the boiler restart point in the heating band while the
temperature of the boiler is drifting down through the band. The
purpose of this is to ensure the temperature remains in the heating
band. It also minimizes temperature swings when the boiler is
stopped and started at low inputs.
This algorithm looks at the size of the band and at what rate the
temperature is falling. It then calculates when to start the boiler
(knowing its starting time) to ensure the boiler starts within the band.
Once the boiler starts, the Add Boiler Delay time starts and continues
to expire in and below the band. This ensures that another boiler does
not start when it leaves the bottom of the band.
BASE LOADING
BASE LOAD BOILERS: 0 0-1
This setting works in conjunction with the ADVANCED SETUP:
SYSTEM: OPTION setting BASE LOAD. Currently only (1) base
load boiler is supported using relay K8
START >MOD
START>MOD,
START<OA T,
START>RET
Used in Conjunction with DELAY TIME.
START>MOD 100% 20
–100
The base load relay K8 will close when the Modulation is >%.
START<OA T 40
–140
The base load relay K8 will close when the OA temp is > T
START>RET 60
–150F
The base load relay K8 will close when the Return temp is > T.
STOP FIRST
FIRST, STOP<MOD,
START>OA T,
START>RET
STOP<MOD 20% 20%20
–100
The base load relay K8 will open when the Modulation is <%.
STOP>OA T 40
–100

F The base load relay K8 will open when the OA temp is > T.
STOP<RET
60
–150

F The base load relay K8 will open when the Return temp is < T.
DELAY TIME 0 0
–60 minutes
This setting allows a wait time before firing the base load boiler
once the start condition is met.
SENSORS
Sensors can only be changed when there is no call for heat. The boiler must be in STANDBY.
SENSOR #
The first (4) sensor #’s are reserved as: OUTSIDE AIR, water
SUPPLY outlet, water RETURN inlet, and system HEADER
temperature. If the HEADER sensor is used (TYPEZ), that boiler
performs the tasks of the MASTER boiler. If the HEADER sensor is
set to NONE, its function is the MEMBER. The next (3) sensors
perform DHW, Stack, and System Return measurements.
TYPE
There are (4) sensor types:
NONE = do not use this sensor
TYPEZ = 10k thermistor
PT = 1k Platinum (only for Stack temperature)
ON/OFF = 5 volts supplied out to detect a contact/switch closure.