Tjernlund CPC-2 Constant Pressure Controller (Discontinued) 8504091 Rev A 03/01 - Manual (Page 9)

LOCKING AND TIMED LOCKOUTS OF THE CPC-2 KEYPAD
The key pad lockout time is 60 seconds from the last key depressed. In Manual mode the key pad will be locked out after 60 sec-
onds and the Venter will stay in manual mode indefinitely unless power is interrupted. When power is interrupted and reestablished
the CPC-2 always starts up in Automatic mode. In Venter Only mode the CPC-2 will revert back to Automatic mode after 45 minutes.
At any time during the programming procedure the key pad can be locked out by depressing the SETUP key, scroll to *LOCK OUT
KEY PAD* and depress SAVE SETTING.
IMPORTANT: The key pad must be locked to view System Status and Fault Messages.
USING KEY PAD TO PROGRAM CPC-2
1) Unlock the key pad by depressing (SAVE SETTING) + (SETUP) + (SAVE SETTING) in sequence.
2) Push Key of Desired Mode of Operation.
3) Push ( INCREASE) Or ( DECREASE) to adjust setting. Hold key down to rapidly scroll to set point.
4) Push (SAVE SETTING) key to save new value.
5) Lock out key pad by depressing the (SETUP) key, scroll to *LOCK OUT KEY PAD* and depress (SAVE SETTING).
IMPORTANT: Settings will not be saved unless Save Setting is depressed after each setting change. CPC-2 can be reset to
previously saved programmed settings by by momentarily turning power “off” then “on” again.
SETUP KEY OPTIONS
These options are made via the Setup key.
Viewed on CPC-2 Display
Locks out the CPC-2 key pad so unintended changes are not made.
Used to reset CPC-2 Faults that are not self clearing.
Displays CPC-2 Board and software version.
VENT DRAFT PRESSURE, PRE-PURGE AND POST PURGE KEY OPTIONS
These settings are made via the Vent Draft Pressure, Pre-Purge or Post Purge keys. Used to set vent manifold pressure and
Venter / Inducer post purge and pre-purge settings.
Viewed on CPC-2 Display
or Sets desired vent manifold pressure read by transducer.
SET VENTER PRESS
SET = -X.XX Pa SET VENTER PRESS
SET = -X.XX InWC
SYSTEM VERSION
X.XX.XX
RESET SYSTEM
FAULT
* LOCK OUT *
* KEY PAD *
6
Select either inWC or Pascals.
Enables Secondary Prover 2, for Combustion Air System. Default is OFF.
Tells if Prover 1 or Prover 2 contacts are open or closed.
Transducer for Sensor 2 used for Combustion Air System. Default is NONE.
COMB. AIR SENSOR
Operating range of TD-1 Transducer for Sensor 1. TD-1 transducer range is from 0.00 to -0.75 inWC.
(0.00 to 187 Pa) VENTER SENSOR
TD-1
PROVER STATE
#1 OPEN or CLSD
#2 OPEN or CLSD
COMB. AIR PROVER
Enables Secondary Prover 1, i.e. PSA-1. Secondary Prover default setting is “OFF” to allow for initial set up
procedures and PSA-1 Fan Prover Switch Adjustment. Venter Prover
must be “ON” after all set ups and
adjustments are completed.
VENTER PROVER
ON
OFF
PRESSURE UNITS
In. WC
PASCALS