Table 20 Ð Test of Output Options Using Option Module

 

 

 

 

KEYBOARD

DISPLAY

COMMENTS/ACTION

ENTRY

RESPONSE

 

 

 

RFVC X

 

 

 

RFVCTEST

Verify that the return fan IGVs stroke to their fully open position.

 

HUM1 %

The return fan IGVs should close.

 

HUM1TEST

Verify that the return fan IGVs, if so equipped, return to their fully closed position. If equipped with single- stage

 

 

analog humidi®cation control, verify that the modulating valve goes to its fully open position. If equipped with

 

 

two stages of humidi®cation, use an ohmmeter to verify that the reading across the 1st stage normally-open

 

 

relay contacts is less than 10 ohms.

 

HUM2 %

Verify that the reading across the 1st stage normally-open relay contacts is greater than 1000 ohms.

 

HUM2TEST

If equipped with two stages of humidi®cation, use an ohmmeter to verify that the reading across the 2nd stage

 

normally open relay contacts is less than 10 ohms.

 

 

 

AOTC %

If equipped with two stages of humidi®cation, verify that the reading across the 2nd stage humidi®cation nor-

 

mally open relay contacts is greater than 100 ohms.

 

 

 

AOTCTEST

Verify that the analog device connected to this output strokes to its 100% position.

 

DOTC X

Verify that the analog device connected to this output strokes to its 0% position.

 

DOTCTEST

Using an ohmmeter, verify that the reading across the DOTC (Discrete Output Temperature Control) normally

 

open relay contacts is less than 10 ohms.

 

 

 

DTCC X

Using an ohmmeter, verify that the reading across the DOTC normally open relay contacts is greater than 1000

 

ohms.

 

 

 

DTCCTEST

Using an ohmmeter, verify that the reading across the DTCC (Discrete Timeclock Control) normally open relay

 

 

contacts is less than 10 ohms. Proceed with the testing of electric heat stages (Table 21). If the unit is not

 

 

equipped with electric heat, exit the Quick Test mode as described below:

 

EXIT TST

 

 

 

TST CMPL

Test is now completed. The unit is back under normal automatic control.

 

 

 

 

 

 

Table 21 Ð Electric Heater Test

 

 

 

KEYBOARD

DISPLAY

COMMENTS/ACTION

ENTRY

RESPONSE

 

 

 

NOTE: Only the con®gured number of stages are tested and appear on the display.

 

ELE HEAT

Entering ®eld test of electric heater. (Set the HOA switch to AUTO.)

 

EHS1 X

 

 

STG1 TST

The fan starts. If equipped, the IGVs open to 30%. After an 11-second delay, the 1st stage of heat is

 

turned ON.

 

 

 

EHS2 X

The 1st stage of heat is turned OFF.

 

STG2 TST

After a 2-second delay, the 2nd stage of heat is turned ON.

 

EHS3 X

The 2nd-stage of heat is turned OFF.

 

STG3 TST

After a 2-second delay, the 3rd stage of heat is turned ON.

 

EHS4 X

The 3rd stage of heat is turned OFF.

 

STG4 TST

After a 2-second delay, the 4th stage of heat is turned ON.

 

EHS5 X

The 4th stage of heat is turned OFF.

 

STG5 TST

After a 2-second delay, the 5th stage of heat is turned ON.

 

EHS6 X

The 5th stage of heat is turned OFF.

 

STG6 TST

After a 2-second delay, the 6th stage of heat is turned ON.

 

EHS7 X

The 6th stage of heat is turned OFF.

 

STG7 TST

After a 2-second delay, the 7th stage of heat is turned ON.

 

EHS8 X

The 7th stage of heat is turned OFF.

 

STG8 TST

After a 2-second delay, the 8th stage of heat is turned ON.

 

EXIT TST

The fan and preceding stage of heat shut OFF.

 

TST CMPL

Test is complete. The unit is back under automatic control.

 

 

 

107

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Carrier 39L specifications Test of Output Options Using Option Module, Electric Heater Test

39L specifications

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