Tjernlund CPC-3 Constant Pressure Controller Startup Manual User Manual

Copyright © 2004, Tjernlund Products, Inc. All rights reserved. P/N 8504125CPC-3 CONTROLLED START-UP MANUALFOR MODULATING DRAFT & COMBUSTION AIR

9VSUB INDUCER OR COMBUSTION AIR BLOWER INTERLOCK WITH VFDVSUB DRAFT INDUCER INTERLOCK WITH VFD230 VOLT VSUB DRAFT INDUCER WIRING460 VOLT VSUB DRAFT IN

PRE-START UP FIELD WIRING VERIFICATIONThe CPC-3 has two sets of terminal strips across the top of its circuit board. All mechanical draft related conn

11The Factory Default Settings for the CPC-3 are as follows:FACTORY DEFAULTSoftware Version: XX.XX.XXPressure Unit Variables: Inches of Water ColumnPr

TESTING THE OPERATION OF THE SYSTEM COMPONENTSTEST RUN SET UPTest run can be used to test several aspects of the Inducer / C.A. Blower. While in Test

13DRAFT SET POINT ADJUSTMENT:Once the Inducer is active and the “INDUCER SETUP” screen is visible, simply press the SET POINT key and the Set Point wi

“SEALED” COMBUSTION AIR MODE:The “Sealed” mode supplies combustion air to a Combustion Air Manifold. Heaters with a combustion air inlet collar may be

15AUXILIARY DEVICESThe CPC-3 Auxiliary Devices include an Audible Alarm Buzzer (on the board), an Auxiliary Sensor Circuit (Blue terminal S1 and S2)an

VIEWING AND RESETTING FAULT HISTORYThe CPC-3's fault history can be viewed for troubleshooting. The CPC-3 is shipped from the factory with no fau

17PSA-1 MANUAL MODE FAN PROVER SWITCH ADJUSTMENTThe manual mode allows the Inducer / C.A. Blower to be temporarily operated at a fixed speed. This fea

TABLE OF CONTENTS PAGEDescriptionsInduced Draft / Exhaust ...

The Patented CPC-3 Controller can simultaneously control both draft and combustion air so only one is needed when both DraftInducers and Combustion Ai

SUGGESTED COMPONENT PHYSICAL PLACEMENT Although it is not necessary to install the CPC-3 and related VFD(s) adjacent to each other it is highly recomm

CPC-3 KEYPAD LAYOUTCPC-3 DISPLAY4AUXILIARY DEVICE Green ACTIVATED LEDindicates AUX. CONTROL Relay contacts (C & O)are closed to actuate auxiliary

5MBMCM1M2S1S2SCS3D-D+BRGP1P2S2S1S2S1 P2 P1 G R B D+ D- S3 SC S2 S1 M2 M1 MC MBB R G B R G S1 S2OCS2S1 12 12 NCCNONLLN LN LN AB AB AB AB 21344312431243

6Positions P1 & P2 are for the PSA-1, manual mode proving switch. Position P1 outputs a 5 VDC signal to the PSA-1 Proving Switch. When the switch

7LOW VOLTAGE TD-SERIES TRANSDUCER & PSA-1 MANUAL MODE FAN PROVER WIRING TO CPC-3MAXIMUM WIRE LENGTH TABLEWARNING:Failure to wire the TransducerMak

8230 VOLT VSAD SERIES WIRING460 VOLT VSAD SERIES WIRINGplate rating before applying power. Improper supply voltageVerify that the input power voltage