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CenCon

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Main Page

Table of Contents4
General Overview6
Hardware Information6
Computer Connection7
Keypad10
Display Screens11
Home Screen11
Heating11
Cooling11
Economizer12
Cencon Analog I/O12
Cencon Digital I/O12
Heating Analog I/O12
Heating Digital I/O12
Communication13
Settings13
Alarms13
Terminal Description14
Operation15
Mode Selection15
Occupied / Unoccupied15
Fan Control15
Variable Air Volume15
Air Proving Switch15
Warmup/Cooldown15
Damper Control16
Make up Air16
Damper End Switch16
Ambient Compensation16
Economizer16
Minimum Position17
California Building Energy Efficiency17
Title 2417
High Ambient Lockout17
Low Limit17
Heating17
Gas Fired Heating18
Cooling18
General Timing18
Temperature Control19
Room or Return Thermostat19
Remote Setpoint19
Bms Setpoint19
Alarm Description20
Alarm Reset20
Wiring Concerns21
Module Grounding21
Communication Wiring21
Communication Wire Grounding22
Expansion Modules (XM)23
J-XM23
Basic Operation24
Terminal Description25
J-XM / CD-XM Timing26
J-XM Combustion Setup27
Gas Actuator Calibration27
Combustion Offsets27
Alarm Description29
G-XM30
Basic Operation30
G-XM Timing31
Terminal Description31
G-XM Combustion Setup32
Gas and Air Actuator Calibration32
Combustion Offsets32
Alarm Description34
M-XM35
Basic Operation35
M-XM / P-XM Timing35
Terminal Description36
M-XM Burner Setup37
Maxitrol Valve37
Gas Actuator Calibration37
Alarm Description38
C-XM39
Basic Operation39
C-XM Timing39
Terminal Description40
Staged Compressors41
Ambient Condenser Fans41
Low Ambient Lockout41
H-XM42
Basic Operation42
Terminal Description42
High Ambient Lockout43
S-XM44
Basic Operation44
S-XM Timing44
Operation Notes45
Terminal Description45
Alarm Description46
Er-XM47
Basic Operation47
Terminal Description48
Alarm Description48
CD-XM49
Basic Operation49
P-XM50
Basic Operation50
Appendix A - Thermistor Output Table52
Appendix B - Maxitrol Valve Adjustments53
Appendix C - Startup Checks54
Appendix D - Service Issues54
Cencon Specific54
Read and Save Features54
Communication Alarm54
Erratic Behavior54
Hard Reset Button54
Miscellaneous55
Combustion Analysis55
Poor Pilot Sensing55
Regulator Response55
Water and Ice from Combustion55
Manifold Pressure55
Customer Installed Sensors55
Speed Sensor - Dj56
Top Loading56
Air Balancing56
Appendix E - DJ/DG Fuel Curve Development57
Combustion Record - DJ58
Combustion Record - DG59
Combustion Record - HE60

Table of Contents

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