Service and Parts Manual (2019, 2020, 2021, 2022)
21 PB
"The Insider" - Concealed Ducted 
Cooling Capacity Table 
Model 
(Btu/h) 
Outdoor 
Air Temp. 
(°F D B ) 
Indoor Air Temp. °F DB / °F WB 
68 / 57  73 / 61  77 / 64  80 / 67  86 / 72  90 / 75 
TC  SHC  PI  TC  SHC  PI  TC  SHC  PI  TC  SHC  PI  TC  SHC  PI  TC  SHC  PI 
9K 
5  8.91   7.14   0.30   9.47   7.54   0.41   10.02  7.76   0.44   10.42  7.46   0.45   11.13  7.52   0.45   11.68  7.66   0.45 
10  8.90   7.19   0.31   9.45   7.60   0.42   10.01  7.82   0.45   10.41  7.51   0.46   11.12  7.58   0.46   11.67  7.72   0.46 
15  8.89   7.25   0.32   9.44   7.65   0.43   9.99   7.88   0.47   10.39  7.56   0.47   11.10  7.63   0.47   11.65  7.77   0.47 
20  8.88   7.29   0.32   9.43   7.71   0.44   9.98   7.93   0.48   10.38  7.62   0.48   11.08  7.68   0.48   11.63  7.83   0.48 
25  8.87   7.35   0.33   9.41   7.76   0.45   9.96   7.99   0.49   10.36  7.67   0.50   11.07  7.74   0.50   11.62  7.88   0.50 
30  8.85   7.40   0.34   9.40   7.82   0.46   9.95   8.04   0.50   10.35  7.73   0.51   11.05  7.79   0.51   11.60  7.94   0.51 
35  8.84   7.45   0.35   9.39   7.87   0.47   9.94   8.10   0.51   10.33  7.78   0.52   11.03  7.85   0.52   11.58  8.00   0.52 
40  8.82   7.50   0.36   9.38   7.92   0.48   9.92   8.16   0.53   10.32  7.83   0.53   11.02  7.90   0.53   11.57  8.05   0.53 
45  8.81   7.55   0.37   9.36   7.98   0.50   9.91   8.21   0.54   10.30  7.89   0.54   11.00  7.95   0.55   11.55  8.10   0.54 
50  8.80   7.60   0.38   9.35   8.03   0.51   9.89   8.27   0.55   10.29  7.94   0.56   10.99  8.01   0.56   11.53  8.16   0.56 
55  8.79   7.65   0.38   9.33   8.09   0.52   9.88   8.32   0.56   10.27  7.99   0.57   10.97  8.06   0.57   11.52  8.21   0.57 
60  8.78   7.70   0.39   9.32   8.14   0.53   9.86   8.38   0.57   10.26  8.04   0.58   10.95  8.11   0.59   11.50  8.27   0.58 
65  8.76   7.75   0.40   9.30   8.19   0.54   9.85   8.43   0.59   10.24  8.10   0.60   10.94  8.16   0.60   11.48  8.32   0.60 
70  8.75   7.80   0.41   9.29   8.24   0.55   9.84   8.49   0.60   10.23  8.15   0.61   10.92  8.22   0.61   11.46  8.37   0.61 
75  8.54   7.67   0.44   9.08   8.12   0.57   9.62   8.37   0.62   10.01  8.04   0.63   10.71  8.12   0.63   11.25  8.28   0.63 
80  8.33   7.54   0.46   8.87   7.99   0.59   9.41   8.24   0.63   9.80   7.93   0.64   10.49  8.02   0.65   11.03  8.18   0.66 
85  8.12   7.41   0.53   8.66   7.86   0.64   9.20   8.12   0.68   9.59   7.81   0.69   10.28  7.91   0.70   10.82  8.08   0.71 
90  7.91   7.26   0.59   8.45   7.72   0.69   8.99   7.98   0.72   9.38   7.69   0.74   10.06  7.80   0.75   10.60  7.97   0.76 
95  7.68   7.19   0.65   8.22   7.65   0.74   8.76   7.92   0.76   9.00   7.52   0.75   9.83   7.76   0.79   10.36  7.94   0.80 
100  7.50   7.00   0.68   8.03   7.46   0.75   8.57   7.73   0.77   8.88   7.41   0.76   9.64   7.59   0.79   10.17  7.77   0.80 
105  7.31   6.80   0.71   7.85   7.26   0.77   8.38   7.55   0.77   8.77   7.29   0.78   9.45   7.42   0.79   9.99   7.61   0.80 
110  7.12   6.57   0.69   7.66   7.03   0.72   8.19   7.31   0.72   8.58   7.07   0.72   9.26   7.21   0.72   9.80   7.40   0.74 
115  6.93   6.38   0.62   7.47   6.83   0.63   8.01   7.12   0.62   8.39   6.89   0.60   9.08   7.04   0.61   9.61   7.23   0.62 
118  6.55   6.08   0.55   7.07   6.52   0.54   7.58   6.80   0.52   7.95   6.59   0.51   8.61   6.74   0.51   9.12   6.93   0.52 
122  6.42   5.97   0.53   6.93   6.41   0.51   7.44   6.69   0.49   7.80   6.48   0.47   8.45   6.63   0.47   8.96   6.82   0.48 
Heating Capacity Table 
Model 
(Btu/h) 
Outdoor Air 
Temp. ( °F DB )  
Indoor Air Temp. °F DB / °F WB 
°F DB   °F WB  
61  64  68  70  72  75 
TC  PI  TC  PI  TC  PI  TC  PI  TC  PI  TC  PI 
9K 
0  -0.4 4.46  0.63  4.20  0.65  4.19  0.66  4.10  0.67  4.02  0.67  3.85  0.70 
5  4.5  5.21  0.64  4.97  0.66  4.90  0.67  4.79  0.68  4.71  0.69  4.52  0.71 
10  9  5.72  0.64  5.49  0.67  5.37  0.69  5.26  0.69  5.17  0.70  4.97  0.72 
17  15  6.28  0.66  6.06  0.68  5.89  0.70  5.77  0.71  5.68  0.72  5.46  0.74 
20  19  6.62  0.67  6.41  0.69  6.20  0.71  6.08  0.72  5.99  0.73  5.76  0.75 
25  23  7.18  0.68  6.97  0.70  6.72  0.73  6.60  0.74  6.50  0.75  6.25  0.77 
30  28  7.75  0.70  7.50  0.72  7.25  0.74  7.11  0.76  7.01  0.77  6.75  0.79 
35  32  8.31  0.72  8.05  0.74  7.77  0.76  7.63  0.78  7.52  0.79  7.25  0.81 
40  36  8.73  0.74  8.49  0.76  8.22  0.78  8.08  0.80  7.96  0.81  7.68  0.84 
45  41  9.27  0.76  9.04  0.79  8.78  0.81  8.63  0.83  8.51  0.84  8.20  0.87 
47  43  9.48  0.77  9.27  0.80  9.00  0.83  8.85  0.84  8.73  0.85  8.42  0.88 
50  46  9.50  0.77  9.31  0.79  9.08  0.81  8.95  0.83  8.85  0.84  8.55  0.86 
55  51  9.55  0.76  9.39  0.78  9.22  0.80  9.11  0.81  9.03  0.81  8.76  0.83 
60  56  9.60  0.75  9.47  0.77  9.35  0.78  9.28  0.79  9.21  0.79  8.98  0.80 
63  59  9.62  0.75  9.52  0.76  9.44  0.77  9.37  0.78  9.32  0.78  9.10  0.79 
68  64  9.65  0.74  9.57  0.75  9.52  0.76  9.47  0.76  9.43  0.77  9.24  0.77 
Remarks: 
TC: Total Cooling Capacity (Gross) 
SHC: Sensible Heat Capacity (Gross) PI: Power Input (including the compressor, evap. fan motor & cond. fan motor) 
DB: Dry Bulb Temperature 
WB: Wet Bulb Temperature 
2
Capacities and selection data
SPECIFICATIONS
Capacity Characteristics Chart
Single Zone Ducted
Figure 211










