Aerco Benchmark 1.5LN, Installation, Operation And Maintenance Manual

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APPENDIX D
Benchmark 2.0LN Low NOx Boiler
GF-120
RESET RATIO CHARTS
Installation, Operation and Maintenance Manual
OMM-0041_0E
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•
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PR1:10/18/12
APPENDIX D: INDOOR/OUTDOOR RESET RATIO CHARTS
Table D-1: Header Temperature for a Building Reference Temperature of 50ºF
RESET RATIO
Air
Temp
0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
50F
50 50 50 50 50 50 50 50 50 50
45F
53 54 55 56 57 58 59 60 60 62
40F
56 58 60 62 64 66 68 70 72 74
35F
59 62 65 68 71 74 77 80 83 86
30F
62 66 70 74 78 82 86 90 94 98
25F
65 70 75 80 85 90 95 100 105 110
20F
68 74 80 86 92 98 104 110 116 122
15F
71 78 85 92 99 106 113 120 127 134
10F
74 82 90 98 106 114 122 130 138 146
5F
77 86 95 104 113 122 131 140 149 158
0F
80 90 100 110 120 130 140 150 160 170
-5F
83 94 105 116 127 138 149 160 171 182
-10F
86 98 110 122 134 146 158 170 182 194
-15F
89 102 115 128 141 154 167 180 193 206
-20F
92 106 120 134 148 162 176 190 204 218
Table D-2: Header Temperature for a Building Reference Temperature of 60ºF
RESET RATIO
Air
Temp
0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
60F
60 60 60 60 60 60 60 60 60 60
55F
63 64 65 66 67 68 69 70 71 72
50F
66 68 70 72 74 76 78 80 82 84
45F
69 72 75 78 81 84 87 90 93 96
40F
72 76 80 84 88 92 96 100 104 108
35F
75 80 85 90 95 100 105 110 115 120
30F
78 84 90 96 102 108 114 120 126 132
25F
81 88 95 102 109 116 123 130 137 144
20F
84 92 100 108 116 124 132 140 148 156
15F
87 96 105 114 123 132 141 150 159 168
10F
90 100 110 120 130 140 150 160 170 180
5F
93 104 115 126 137 148 159 170 181 192
0F
96 108 120 132 144 156 168 180 192 204
-5F
99 112 125 138 151 164 177 190 203 216
-10F
102 116 130 144 158 172 186 200 214
-15F
105 120 135 150 165 180 195 210
-20F
108 124 140 156 172 188 204