RBI FUTERA XLF Series Control Manual
Also see for FUTERA III Series: User's information manualInstallation & operation manualInstallation and operating instructionsManual
                                                                                                                                | |
Contents
| 
OPTIONAL FEATURES HeatNet Control V3Page 63This MEMBER boiler will continue to run at theLOCAL setpoint until H-NET communications from theMASTER boiler is re-established.Ensure that this Member boiler’s Damper and Systempump control are configured correctly with theassumption that the Master is not powered. Also ensurethat any other System settings related to outside airtemperature sensing and system interlocks are set toprovide safe operation.3. Domestic Hot Water FailsafeIf the DHW mode is set for Combination, a DHWMEMBER boiler can be set up as a DHW Failsafeboiler.If a 10K sensor is used, connect to DHW TANK, J10 A,9 & 10 of the Member Failsafe boiler. If there is onlyone location for a 10K sensor, a dual sensor (14-0328, 4”& 14-0329, 6”) is available that would be connected tothe Master and Member Failsafe boilers DHW TANKsensor input. A jumper wire must be landed on the OROVR, J12A, 7 & 8 and JPS1 must be cut.SETUP: AUX FUNCTIONS: FAILSAFE MODES:H-NET COMM LOST: ON.SETUP: DOMESTIC HOT WATER: DHWBOILER?: COMBO. USE SENSOR: YES.If an aquastat is used, connect it to OR OVR, J12A, 7 &8 of the Member Failsafe boiler. If there is only onelocation for an aquastat, then a dual aquastat must beused. JPS1 must be cut.SETUP: AUX FUNCTIONS: FAILSAFE MODES:H-NET COMM LOST: ON.SETUP: DOMESTIC HOT WATER: DHWBOILER?: COMBO. USE SENSOR: NO.Other DHW menu settings should be setup like theMaster boiler.ADVANCED SETUP: DISTRIBUTED CONTROL:MASTER TYPE: AUTO.4. Low Temperature ProtectionLOW TEMP: OFF, SUPPLY, HEADER, DHW, orRETURNThis mode may be used by the MASTER or MEMBERboiler and can be used as a type of freeze protection. Inthis mode you may select which Sensor you wish tomonitor, or you may opt to turn this mode OFF. If youselect a sensor, you may then associate it with atemperature at which the boiler will turn ON. Once thetemperature at this sensor falls below the LOW TEMPtemperature the boiler will start and fire to its LOCALsetpoint. Once the Boiler reaches its setpoint it will turnOFF.Category 1 VentingThe version 3 control supports Category 1 Venting. If theboiler is a Category 1 Venting version then the Category 1Version of the firmware MUST be used, and the Category 1Configuration resistor MUST be installed and wired to the J7terminals. The configuration resistor is recognizedautomatically. If the Category 1 resistor is not recognized theboiler will not fire and the "CAT 1 BOILER CONFIG" faultmessage will be displayed with a timestamp.Please contact the factory for more information on Category1 venting.Limited Flow Boiler ControlOptionsThree methods to limit the boilers based on flow areprovided.1. Flow Limited Control (BMS)2. Boilers Limited Control (BMS)3. Flow MeterThe flow settings are used to limit HeatNet’s ability to addboilers when the system flow changes. In variable flowsystems, and when the system flow is reduced, any boiler(s)that is/are running may develop a high delta temperatureacross the boiler. When this occurs, the boiler(s) will enter ahigh delta T protection mode and drop to half of the ratecalled for. At this time, the Master may not be able to achievesetpoint due to the reduced output with the running boiler(s).The Master will then call on more boilers to achieve setpoint,but at the same time splitting the flow through the boiler(s) ithas running. The flow can be so reduced that the boiler(s) triptheir operating limits or even their high limits.A flow meter input is supplied on the analog input 4-20 mA(2). This input can be configured to capture flow in thesystem that will be used to limit the # of boilers to fire. If aflow meter and a System Return sensor are present, a BTUload measurement will be displayed in the running screenThe BTU value is relative to the accuracy of the sensors andis only available as an estimate of the BTU load. Acalibrated BTU meter would be required to get a moreaccurate measurement.The BTU load value may also be accessed through Modbusread registers 30242 (upper 16 bit word) & 30243 (lower 16bit word). These two words will need to be combined inorder to get the BTU load value. |
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine