Carel k.Air, User Manual, Page: 8 / 192

8
Introduction
k.air +030220981 rel. 1.2 - 01.12.2020
1.2 Map of points and functional diagram
VOC
Fig. 1.b
A I A nalogue inputs D I D igital inputs AO D igital outputs AO A nalogue outputs
0 Supply temperature 0 Supply air fl ow switch 0 Bypass damper 0 Supply fan
1 Supply humidity 1 Return air fl ow switch 3 Outside air damper 1 Return fan
2 Return temperature 2 Air fl ow switch 4 Exhaust damper 2 Bypass damper
3 Return humidity 3 Frost protection thermostat 5 Mixing damper 3 Mixing damper
4 Room temperature 4 Remote On/Off 6 Supply damper 4 Outside air damper
5 Room humidity 5 Supply fan 1 thermal protector 7 Return damper 5 Reheat coil
6 Outside temperature 6 Return fan 1 thermal protector 10 Supply fan 6 Preheat coil
7 Outside humidity 11 Fan thermal protector 11 Return fan 8 Main coil
8 Exhaust temperature 12 Compressor thermal protector 14 Compressor 9 Thermal wheel
9 Exhaust humidity 13 High pressure switch 15 Reversing valve 10 Humidifi er
10 Frost protection temperature 14 Low pressure switch 16 Unit status 11 Exhaust damper
11 Saturation temperature 15 Heat recovery unit thermal protector 17 Heating/cooling status 12 Auxiliary loop 1 signal
12 Saturation humidity 16 Serious alarm 18 Global alarm 13 Auxiliary loop 2 signal
14 Supply pressure 17 Generic alarm 19 Minor alarm 14 Auxiliary loop 3 signal
15 Return pressure 18 Generic warning 20 Serious alarm 15 Auxiliary loop 4 signal
16 CO2 sensor 19 Filter alarm 21 Humidifi er 16 IEC humidifi er
17 VOC sensor 20 Supply fi lter 1 alarm 22 Auxiliary loop 1 output 18 Supply damper
18 Discharge pressure 21 Supply fi lter 2 alarm 23 Auxiliary loop 2 output 17 Modulating heat recovery unit
19 Drain temperature 22 Return fi lter alarm 24 Auxiliary loop 3 output 19 Return damper
20 Suction pressure 23 Humidifi er alarm 25 Auxiliary loop 4 output
21 Suction temperature 24 Main coil pump 1 thermal protector 26 Open main coil valve
23 Preheating coil H2O temp. 25 Main coil pump 2 thermal protector 27 Open preheating coil valve
24 Main coil H2O temp. 26 Reheat coil pump 1 thermal protector 28 Open reheating coil valve
25 Reheating coil H2O temp. 27 Reheat coil pump 2 thermal protector 29 Main coil valve closing
26 Auxiliary loop 1 sensor 28 Preheat coil pump 1 thermal protector 30 Close preheating coil valve
27 Auxiliary loop 2 sensor 29 Preheat coil pump 2 thermal protector 31 Close reheating coil valve
28 Auxiliary loop 3 sensor 35 Main coil fl ow switch 32 Main coil step 1
29 Auxiliary loop 4 sensor 36 Preheating coil fl ow switch 33 Main coil step 2
33 Hepa 1 fi lter sensor 37 Reheating coil fl ow switch 34 Main coil step 3
34 Hepa 2 fi lter sensor 39 Heat recovery unit dirty 35 Main coil step 4
35 PM 2.5 sensor 40 Reheating alarm 36 Reheating coil step 1
36 PM 10 sensor 41 Preheating coil alarm 37 Reheating coil step 2
42 Main coil alarm 38 Reheating coil step 3
44 Open door contact 39 Reheating coil step 4
45 Smoke-fi re alarm 40 Preheating coil step 1
47 Heating/cooling contact 41 Preheating coil step 2
49 Eco contact 42 Preheating coil step 3
50 Pre-Comfort contact 43 Preheating coil step 4
51 Comfort contact 48 Preheat coil pump 1
52 Auxiliary loop 1 input 49 Preheat coil pump 2
53 Auxiliary loop 2 input 50 Main coil pump 1
54 Auxiliary loop 3 input 51 Main coil pump 2
55 Auxiliary loop 4 input 52 Reheat coil pump 1
56 Heat recovery unit defrost 53 Reheat coil pump 2
57 Sanifi cation alarm 56 Filter alarm
57 On/off heat recovery unit
58 IEC humidifi er
59 Sanifi cation device Tab. 1.a