Icc Control Operation With Conventional Thermostat Wiring - Rheem R-410A Installation Instructions Manual

Prl-jec series two-stage heat pump outdoor units

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Engineering manual (8 pages)

Table Of Contents

Table of Contents

12.9 ICC Control Operation with Conventional Thermostat Wiring

I I n n s s t t a a l l l l a a t t i i o o n n V V e e r r i i f f i i c c a a t t i i o o n n

• 24V AC power on R&C must be present at the ICC for it to operate

• Line voltage must be present at the ICC for the compressor and the outdoor fan

to operate

• The ICC displays a "0" for standby mode. Standby mode indicates line voltage

and 24VAC are present at the ICC and there is not a call for unit operation from

the thermostat.

Zero (0) displayed

The unit is in standby

Zero (0) displayed

Call for Compressor Operation (Y1 LED)

The unit is in standby

Call for Compressor Operation (Y1 LED)

If a call for compressor operation is received by the ICC (first stage/second stage coolin

•

If a call for compressor operation is received by the ICC (first stage/second stage cooling or

Call for Compressor Operation (Y1 LED)

first stage/second stage heating), the red Y1 LED will illuminate.

•

first stage/second stage heating), the red Y1 LED will illuminate.

If a call for compressor operation is received by the ICC (first stage/second stage cooling or

C C a a l l l l f f o o r r C C o o m m p p r r e e s s s s o o r r O O p p e e r r a a t t i i o o n n ( ( Y Y 1 1 L L E E D D ) )

The ICC has an on/off fan delay of one (1) second for each stage of heating or cooling.

•

The ICC has an on/off fan delay of one (1) second for each stage of heating or cooling.

The ICC ignores the lower pressure control for the first 90 seconds of compressor opera

first stage/second stage heating), the red Y1 LED will illuminate.

• If a call for compressor operation is received by the ICC (first stage/second stage

•

cooling or first stage/second stage heating), the red Y1 LED will illuminate.

The ICC ignores the lower pressure control for the first 90 seconds of compressor operation.

The ICC has an on/off fan delay of one (1) second for each stage of heating or cooling.

On heat pumps, the ICC ignores the LPC during the defrost cycle.

•

On heat pumps, the ICC ignores the LPC during the defrost cycle.

The ICC ignores the lower pressure control for the first 90 seconds of compressor operation.

The 7-segment LED can display five (5) codes during a call for unit operation:

• The ICC has an on/off fan delay of one (1) second for each stage of heating or

•

cooling.

The 7-segment LED can display five (5) codes during a call for unit operation:

On heat pumps, the ICC ignores the LPC during the defrost cycle.

•

• The ICC ignores the lower pressure control for the first 90 seconds of compressor

1) First Stage Cooling Operation – When the ICC receives a call for first stage cooli

The 7-segment LED can display five (5) codes during a call for unit operation:

•

operation.

1) First Stage Cooling Operation – When the ICC receives a call for first stage cooling

operation, a lower case "c" is displayed on the 7-segment LEDs.

• On heat pumps, the ICC ignores the LPC during the defrost cycle.

1) First Stage Cooling Operation – When the ICC receives a call for first stage cooling

operation, a lower case "c" is displayed on the 7-segment LEDs.

• The dual 7-segment LED displays five (5) operational status codes:

1 1 ) ) F F i i r r s s t t S S t t a a g g e e C C o o o o l l i i n n g g O O p p e e r r a a t t i i o o n n – When the ICC receives a call for first stage

cooling operation, a lower case "c" is displayed on the dual 7-segment LEDs.

Lower case "c" indicates first stage cooling operation

2) Second Stage Cooling Operation – When the ICC receives a call for second stage

Lower case "c" indicates first stage cooling operation

2 2 ) ) S S e e c c o o n n d d S S t t a a g g e e C C o o o o l l i i n n g g O O p p e e r r a a t t i i o o n n – When the ICC receives a call for second

2) Second Stage Cooling Operation – When the ICC receives a call for second stage

stage cooling operation, an upper case "C" is displayed on the dual 7-segment

cooling operation, an upper case "C" is displayed on the 7-segment LEDs.

LEDs.

cooling operation, an upper case "C" is displayed on the 7-segment LEDs.

2) Second Stage Cooling Operation – When the ICC receives a call for second stage

cooling operation, an upper case "C" is displayed on the 7-segment LEDs.

Upper case "C" indicates second stage cooling operation

3 3 ) ) F F i i r r s s t t S S t t a a g g e e H H e e a a t t i i n n g g O O p p e e r r a a t t i i o o n n - When the ICC receives a call for first stage

3) First Stage Heating Operation - When the ICC receives a call for first stage heatin

Upper case "C" indicates second stage cooling operation

heating operation, "h" is displayed on the dual 7-segment LEDs.

3) First Stage Heating Operation - When the ICC receives a call for first stage heating

operation, "h1" is displayed on the 7-segment LEDs.

3) First Stage Heating Operation - When the ICC receives a call for first stage heating

operation, "h1" is displayed on the 7-segment LEDs.

4) Second Stage Heating Operation - When the ICC receives a call for second stage

heating operation, "h2" is displayed on the 7-segment LEDs.

4) Second Stage Heating Operation - When the ICC receives a call for second stage

heating operation, "h2" is displayed on the 7-segment LEDs.

INSERT FIGURES 7 THRU 10 HERE FR