Continuous Fan Mode; Component Test - Carrier Infinity 480CEN024 Installation Instruction

Required Subcooling oF (oD) Required Liquid Line Temperature for a Specific Subcooling (R-410A)
Outdoor Ambient Temperature Required Subcooling (°F) Required Subcooling (°C)
Model Size
75 (24) 82 (28) 85 (29) 95 (35) 105 (41 }
024 10.3 ( 5.7 ) 9.8(5.4) 9.4 ( 5.2 ) 9(5) 8.6 ( 4.7 t
030 9.3(5.2) 8.8 ( 4.9 } 8.61 4.8 ) 7.8(4.3) 7(3.9)
036 17.6 ( 9.8 ) 16.8 ( 9.3 } 16.5 ( 9.2 ) 15.4 ( 8.6 } 14.3 ( 7.9 )
042 12.8(7.1) 12.7(7.1) 12.7(7.1) 12.6 (7} 12.6(7)
048 17.5(9.7) 16.9(9.4) 16.6(9.2) 15.7(8.7) 14.8(8.2)
060 13.7(7.6! 1317.2 _ 13!7.2! 14.5(8.1) 11.516.4)
Charqinq Procedure
I- Measure Discharge line pressure by attaching a gauge to the service port.
2- Measure the Liquid line temperature by attaching a temperature sensing
device to it.
3- Insulate the temperature sensing device so that the Outdoor Ambient
doesn't affect the reading.
4- Refer to the required Subcooling in the table based on the model size and
the Outdoor Ambient temperature.
5- Interpolate if the Outdoor ambient temperature lies in between the table
values. Extrapolate if the temperature lies beyond the table range.
8- Find the Pressure Value in the table corresponding to the the measured
Pressure of the Compressor Discharge line.
7- Read across from the Pressure reading to obtain the Liquid line
temperature for a required Subcooling
B- Add Charge if the measured temperature is higher than the table value.
_ressure Pressu_
(psig) 5 10 15 20 25 (kPa) 3 6 8
189 61 56 51 46 41 1303 16 13 11
196 63 58 53 48 43 1351 17 15 12
203 66 61 56 51 46 1399 19 16 13
210 68 63 58 53 48 1448 20 17 14
217 70 65 60 55 50 1496 21 18 15
224 72 67 62 57 52 1544 22 19 16
231 74 69 64 59 54 1593 23 20 18
238 76 71 66 61 56 1641 24 21 19
245 77 72 67 62 57 1689 25 22 20
252 79 74 69 64 59 1737 26 23 21
260 81 76 71 66 61 1792 27 25 22
268 83 78 73 68 63 1848 29 26 23
276 85 80 75 70 65 1903 30 27 24
284 87 82 77 72 67 1958 31 28 25
292 89 84 79 74 69 2013 32 29 26
300 91 86 81 76 71 2068 33 30 27
309 93 88 83 78 73 2130 34 31 28
318 95 90 85 80 75 2192 35 32 29
327 97 92 87 82 77 2254 36 33 31
336 99 94 89 84 79 2316 37 34 32
345 101 96 91 86 81 2378 38 35 33
354 103 98 93 88 83 2440 39 36 34
364 105 100 95 90 85 2509 40 38 35
374 107 102 97 92 87 2578 41 39 36
384 108 103 98 93 88 2647 42 40 37
394 110 105 100 95 90 2716 44 41 38
404 112 107 102 97 92 2785 45 42 39
414 114 109 104 99 94 2854 46 43 40
424 116 111 106 101 96 2923 47 44 41
434 118 113 108 103 98 2992 48 45 42
444 119 114 109 104 99 3061 48 46 43
454 121 116 111 106 101 3130 49 47 44
464 123 118 113 108 103 3199 50 48 45
474 124 119 114 109 104 3268 51 48 46
484 126 121 116 111 106 3337 52 49 47
494 127 122 117 112 107 3406 53 50 47
504 129 124 119 114 109 3475 54 51 48
514 131 126 121 116 111 3544 55 52 49
524 132 127 122 117 112 3612 56 53 50
534 134 129 124 119 114 3681 56 54 51
11
8
9
10
11
13
14
15
16
17
18
19
2o
21
22
23
24
26
27
28
29
3o
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
46
47
48
Fig. 18 - Cooling Charging Table-Subcooling
14
5
6
8
9
10
11
12
13
14
15
16
17
19
2O
21
22
23
24
25
26
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30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
45
C03027
CONTINUOUS FAN MODE
When continuous fan operation is requested by the User Interface
indoor blower motor will operate at continuous blower airflow.
Continuous fan operation is programmable. See the User Interface
Owner's Manual for detailed instructions. Terminal EAC-1 is
energized as long as the indoor blower motor is energized.
During a call for heat, the Infinity control will transition the indoor
blower motor to continuous blower airflow or heat airflow,
whichever is lowest. The indoor blower motor will remain ON until
the burners ignite then shut OFF and remain OFF for the
blower-ON delay allowing the heat exchangers to heat up more
quickly, then restarts at the end of the blower-ON delay period.
The indoor blower motor will revert to continuous-blower airflow
after the heating cycle is completed.
When the UI "calls for cooling", the indoor blower motor will
switch to operate at cooling airflow. When the call for cooling is
satisfied, the indoor blower motor will operate an additional 90
seconds at cooling airflow before transitioning back to
continuous-blower airflow.
When the call for continuous fan is removed, the indoor blower will
continue operating for an additional 5 seconds, if no other function
requires blower motor operation.
COMPONENT TEST
The Infinity Control Board features a component test system to help
diagnose a system problem in the case of a component failure. To
initiate the component test procedure, ensure that there are no UI
inputs to the control (the ABCD connector can be removed from the
Infinity control board for this operation) and all time delays have
expired. Turn on setup switch SW1-6.
NOTE: The component test feature will not operate if the control is
receiving any UI signals or until all time delays have expired.
The component test sequence is as follows:
1. The control turns the inducer motor ON and keeps it ON
through step 3.
2. After waiting 10 seconds, the control turns the igniter ON for
15 seconds, then OFF.
3. The control then turns the indoor blower motor on for 15
seconds, then OFF.
4. After shutting the blower motor OFF. the control runs the
inducer for 10 seconds, then turns it OFF.
NOTE: The EAC terminals are energized when the blower is
operating.
After the component test is completed, one or more status codes (11,
25, or 41) will flash. See component test section or Status (;ode
Label for explanation of status codes.
NOTE: To repeat component test, turn setup switch SW1-6 to OFF
and then back ON.
Step 4_Unit Troubleshooting
STATUS CODE CONTINUOUS OFF
Check for 230 VAC at L1 and L2, and 24 VAC at SEC-1 and
SEC-2.
STATUS CODE CONTINUOUS ON
Control has 24 VAC power.
STATUS CODE 11 - NO PREVIOUS (;ODE
Stored status codes are erased automatically after 72 hours.
STATUS CODE 12 - BLOWER ON AFTER POWER UP
(230 VAC or 24 VAC) Blower runs for 90 seconds, if unit is
powered up during a call for heat (R-W/W1 closed) or (R-W/W1
opens) during blower on-delay period.
STATUS CODE 13 - LIMIT CIRCUIT LOCKOUT
Lockout occurs if a limit or flame rollout switch is open longer than
3 minutes or 10 successive limit trips occurred during high-heat.
Control will auto reset after three hours. Refer to status code 33.
2O