Tjernlund CPC-3 Constant Pressure Controller Startup Manual 8504125 - Manual (Page 2)

TABLE OF CONTENTS PAGE
Descriptions
Induced Draft / Exhaust ..............................................................................................................................................1
Combustion Air............................................................................................................................................................1
Auxiliary Devices ............................................................................................................................................................2
Operation Modes
Automatic ....................................................................................................................................................................2
Manual.........................................................................................................................................................................2
Suggested Physical Placement of Components & Maximum Lead Lengths ..................................................................3
Transducer Sensing Tube Installation .............................................................................................................................3
Induced Draft...............................................................................................................................................................3
“Open” Combustion Air................................................................................................................................................3
“Sealed” Combustion Air .............................................................................................................................................3
CPC-3 Keypad Layout & Display ...................................................................................................................................4
CPC-3 Circuit Board Callouts .....................................................................................................................................5, 6
Wiring
Low Voltage VFD Control Cable Wiring to CPC-3......................................................................................................6
Low Voltage TD-Series Transducer & PSA-1 Manual Mode Fan Prover Wiring to CPC-3 ........................................7
Remote Alarm / Auxiliary Device Wiring .....................................................................................................................7
VFD to Inducer / C.A. Blower Wiring ......................................................................................................................8, 9
CPC-3 Main Power Input & Heater Interlock Wiring.................................................................................................10
Pre-start up Field Wiring Verification.........................................................................................................................10
Start Up of CPC-3
Powering & Initializing CPC-3 ...................................................................................................................................10
Default CPC-3 Program Settings ..............................................................................................................................11
Unlocking & Locking the CPC-3 Keypad...................................................................................................................11
Setting CPC-3 Time and Date...................................................................................................................................11
Activating the Draft or Combustion Air ......................................................................................................................11
Testing the Operation of System components
Test Run Set Up........................................................................................................................................................12
VFD and Pressure Transducer Response ................................................................................................................12
Checking for Proper Rotation....................................................................................................................................12
Draft Adjustment
Draft Set Point Adjustment..................................................................................................................................12, 13
Balancing Draft..........................................................................................................................................................13
Combustion Air Adjustment
“Open” & “Sealed” Combustion Air Modes of Operation ....................................................................................13, 14
Combustion Air Set Point Adjustment .......................................................................................................................14
“Open” Mode System Start Up..................................................................................................................................14
“Sealed” Mode System Start Up ...............................................................................................................................14
Auxiliary Devices
Alarm Buzzer.............................................................................................................................................................15
Aux Sensor Set Up ...................................................................................................................................................15
Aux Device Set Up....................................................................................................................................................15
CPC-3 Options
Resetting VFD Drive(s) .............................................................................................................................................15
Setting Pressure Units of Measure ...........................................................................................................................15
Viewing & Resetting Fault History.............................................................................................................................16
Set Stages & Burner Interlock Verification ................................................................................................................16
Setting Pre and Post Purge ......................................................................................................................................16
Manual Mode Operation and PSA-1 Fan Prover Switch Adjustment......................................................................16, 17
Maintenance & How to Obtain Service Assistance .......................................................................................................17
INDUCED DRAFT EXHAUST & COMBUSTION AIR SYSTEMS
INDUCED DRAFT / EXHAUST
The automatic variable speed draft system consists of:
1. A Draft Inducer (either VSAD-Series or VSUB-Series)
2. A CPC-3 Constant Pressure Controller
3. A TD-Series Pressure Transducer
4. A VFD-Series Variable Frequency Drive
5. A PSA-1 Fan Prover for Manual Mode Operation (Included with VSAD & VSUB Series)
COMBUSTION AIR / MAKE-UP AIR
The automatic variable speed combustion air system consists of:
1. A VSUB-Series blower
2. A CPC-3 Constant Pressure Controller
3. A TD-Series Pressure Transducer
4. A VFD-Series Variable Frequency Drive
5. A PSA-1 Fan Prover for Manual Mode Operation (Included with VSAD & VSUB Series)
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