Preferred FlexFit 110 User Manual

Specications v
FlexFit – Linkageless Control – Revision 1.0
PREFERRED
UTILITIES MFG CORPORATION
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Figure 1 – 1 FlexFit 110 Safety Relay ......................................................1-2
Figure 1 – 2 FlexFit BMS States ..............................................................1-5
Figure 1 – 3 FlexFit 110 Timing Diagram .................................................1-6
Figure 1 – 4 FlexFit 110 Flex Sequence Timing Diagram ........................1-7
Figure 1 – 5 FlexFit Parallel Positioning Example ................................. 1-10
Figure 2 – 1 FF-110 BMS Internal Block Diagram ................................. 2-15
Figure 2 – 2 FF-110 BMS Standard Wiring Diagram (Typical) (Default) 2-16
Figure 2 – 3 FF-110 BMS Flex Sequence Wiring Diagram (Typical) (Field
Selectable) ......................................................................... 2-17
Figure 2 – 4 LCD Cutout Dimensions .................................................... 2-18
Figure 2 – 5 FlexFit-CC Rear View ........................................................ 2-18
Figure 2 – 6 FF-CC Wiring Diagram (Typical) ....................................... 2-19
Figure 2 – 7 FF-110 VSD Wiring (Typical) ..............................................2-20
Figure 2 – 8 FF-110 VSD with Bypass Wiring (Typical) ......................... 2-21
Figure 2 – 9 Servo Control Board ..........................................................2-22
Figure 2 – 10 Servo Travel Limit Switches ...............................................2-23
Figure 2 – 11 Servo Forbidden Zone .......................................................2-24
Figure 2 – 12 QD1 to FlexFit Wiring .........................................................2-26
Figure 2 – 13 QD1 Junction Box Connections (Example) .......................2-26
Figure 2 – 14 QD1 Daisy-chain Connections (Example) ......................... 2-27
Figure 2 – 15 QD1 Mixed Junction Box & Daisy-chain Connections
(Example) ........................................................................... 2-27
Figure 2 – 16 FlexFit Flame Scanner (Model BMU-UVSC) .....................2-27
Figure 2 – 17 Typical Scanner Mounting .................................................2-29
Figure 2 – 18 Typical Flame Scanner Wiring ........................................... 2-29
Figure 2 – 19 ZP Oxygen Sensor with FlexFit CC ...................................2-30
Figure 2 – 20 ZP Detector ........................................................................ 2-30
Figure 2 – 21 Detector Measuring Principle ............................................2-31
Figure 2 – 22 Nernst Equation .................................................................2-31
Figure 2 – 23 Oxygen Sensor Gas Flow .................................................. 2-32
Figure 2 – 24 ZP Oxygen Probe Mounting Location ...............................2-33
Figure 2 – 25 Temperature Sensitive Labels ...........................................2-33
Figure 2 – 26 Rotating the Oxygen Probe ...............................................2-34
Figure 2 – 27 Calibration Gas Tubing ......................................................2-34
Figure 2 – 28 Wiring the ZP Oxygen Sensor to the FlexFit CC ............... 2-35
Figure 3 – 1 Menu Tree ......................................................................... 3-42
Figure 3 – 2 Menu Tree 2 ...................................................................... 3-43
Figure 3 – 3 Menu Tree 3 ...................................................................... 3-44
Figure 3 – 4 Menu Tree 4 ...................................................................... 3-45
Figure 3 – 5 Avoid Gap Setpoint ........................................................... 3-54
Figure 4 – 1 Typical Gas Train with No Vent Valve ............................... 4-64
Figure 4 – 2 Valve Train Volume Calculation ........................................ 4-65
Figure 4 – 3 Test Time Calculation ....................................................... 4-65
Figure 4 – 4 Gas Leak Test Timing Calculation Example ..................... 4-65
Figure 4 – 5 Call for Heat Logic .............................................................4-73
Figure 4 – 6 Floating Draft Control ........................................................4-77
Figure 4 – 7 Draft Feed Forward Curves .............................................. 4-80
Figure 5 – 1 Calibration Port Check Valve ............................................ 5-90
Figure 5 – 2 Detector Leak Test .............................................................5-91
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Table A FlexFit 110 Flame Safeguard Terminal Ratings .....................vii
Table B Combinations for Fuel & Ignition Terminals ...........................vii
Table C Explanation of Each Combination .........................................vii
Table 2 – 1 ZP Sensor Maintenance Periodicity ..................................2-36
Table 4 – 1 Total Pipe Area ................................................................. 4-64
Table 4 – 2 Gas Leak Test Timing Calculation Example Data ............ 4-65
Table 5 – 1 Lockout Messages ............................................................ 5-86
Table 5 – 2 Approximate Wet Vs. Dry Correction Factors .................. 5-88
Table 5 – 3 Cell mV Vs. % Oxygen ...................................................... 5-89
Table 5 – 4 Troubleshooting Chart .....................................................5-104
Table A – 1 Abbreviations ...................................................................A-107
Table A – 2 Denitions ....................................................................... A-108
Table A – 3 Parts List .......................................................................... A-110

Preferred FlexFit 110 Specifications

General

Brand	Preferred
Model	FlexFit 110
Category	Controller
Language	English