RBI FUTERA XLF Series User Manual

FEATURES & SPECIFICATIONS HeatNet Control V3
Page 5
Introduction
The Futera III/Fusion-Series V3
HeatNet Control
The Futera III/Fusion-Series V3 boiler control is the third
generation of the HeatNet control platform. Control
hardware has been added to make use of many new heating
applications. These new features are outlined in the Features
& Specifications section.
Two versions of the Control are available. The full version
and the “Lite” version. The Full version is available as an
option. Consult the factory or sales. The Lite version:
1.) Supports (1) system pump
2.) HeatNet Online monitoring requires a Touchscreen
display on the Master boiler (Full and Lite).
3.) Only a 0-10 VDC output (no 4-20mA)
4.) Does not support (3) alternate staging relays
5.) Pluggable colored terminal strips.
The Futera III/Fusion-Series boiler control is designed to
provide the Futera III/Fusion-Series of boilers with an
integrated boiler management system on every boiler.
Designed for the Air-Fuel coupled Futera III/Fusion-Series
boilers, the Futera III/Fusion-Series HeatNet control
provides for optimized heating efficiency without the need
for a “wall mount control”. Since the Futera III/Fusion-
Series modular control method is based on digital
communications, analog control signals are not required.
Although the use of analog control signals is still supported
(4-20mA control loops and 0-10vdc control voltages), a
higher level of control precision, repeatability, and feedback
is gained with digital communications control.
With the Futera III/Fusion-Series, optimized heating
efficiency is accomplished by setting the Modulation
Maximum (Mod-Max) setting to exploit the inverse
efficiency curve. This value can be adjusted so that as each
boiler is added, it operates at its maximum turndown. This
allows the maximum number of boilers to operate at their
lowest inputs, until all boilers are firing. Once all boilers are
firing, full range modulation control is allowed. An outdoor
reset function is also provided to assist in the optimized
heating efficiency of the Futera III/Fusion-Series boilers.
The Futera III/Fusion-Series boiler with the Futera
III/Fusion-Series H-Net control, can be operated in multiple
ways:
1. As a standalone boiler.
2. A boiler, in a Boiler Network, using the HeatNet
®
(H-Net
®
) protocol.
3. A Member boiler to a boiler management system with
multiple input control methods.
The primary purpose of the control is to maintain the boiler
water temperature at the supply or the header sensor using a
target setpoint. While performing this task, the control also
monitors dedicated external limits in a limit string and
provides an orderly shutdown and fault indication in the
event of a tripped limit. The monitored limits include a
HIGH LIMIT AQUASTAT, LOW WATER CUTOFF,
GAS PRESSURE, FLOW, IGNITION CONTROL fault,
GAS VALVE alarm, VARIABLE FREQUENCY DRIVE
alarm, and other optional or user selectable limits.
The HIGH LIMIT circuit is independent of
the control and shuts down the ignition
control and the boiler if the control board or
other component of the boiler was to
malfunction. The control will continue to
function and report the fault, but its ability to
control the boiler will end.
Each Futera III/Fusion-Series boiler employing this control
can function as either a Master or a Member. This allows
one boiler (Master) to be in control of a target temperature.
The other boilers (Members) only respond to the commands
issued by the Master. If using an external control, all boilers
can be setup as Member s. The following will define the
roles of Master and Member.
Master
A boiler becomes a Master when a temperature sensor is
connected to the J10 “SYSTEM HEADER” terminals. The
sensor is auto-detected.
The Master senses and controls the common system
header/loop water temperature using a system setpoint. It
uses any boilers it finds (over the H-Net communications
cable) to accomplish this. It can also monitor the Outside
Air (OA) temperature to provide outdoor reset functionality.
Only one Master is allowed in a system.
When operating as a Master, the boiler provides a control
method using a PID algorithm to regulate water
temperature. This algorithm allows a single boiler (Master),
or multiple (Master + Member) boilers. There are two PID
algorithms that can be used. One PID is used for space
heating, and the other for Domestic Hot Water (DHW)
heating. This allows both space and DHW to be controlled
simultaneously.

RBI FUTERA XLF Series Specifications

General

Brand	RBI
Model	FUTERA XLF Series
Category	Controller
Language	English