Aerco BENCHMARK 2500DF User Manual page 160

Dual fuel gas-fired boiler
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Benchmark 2500DF-3000DF Installation, Operation & Maintenance Manual
APPENDIX D – INDOOR/OUTDOOR RESET RATIO CHARTS
Table F-7: Header Temperature for a Building Reference Temperature of 90F
Air
0.6
0.8
Temp
90F
90
90
85F
93
94
80F
96
98
75F
99
102
70F
102
106
65F
105
110
60F
108
114
55F
111
118
50F
114
122
45F
117
126
40F
120
130
35F
123
134
30F
126
138
25F
129
142
20F
132
146
15F
135
150
10F
138
154
5F
141
158
0F
144
162
Page 160 of 234
05/21/2014
RESET RATIO
1.0
1.2
1.4
90
90
90
95
96
97
100
102
104
105
108
111
110
114
118
115
120
125
120
126
132
125
132
139
130
138
146
135
144
153
140
150
160
145
156
167
150
162
174
155
168
181
160
174
188
165
180
195
170
186
202
175
192
209
180
198
216
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
1.6
1.8
2.0
90
90
90
98
99
100
106
108
110
114
117
120
122
126
130
130
135
140
138
144
150
146
153
160
154
162
170
162
171
180
170
180
190
178
189
200
186
198
210
194
207
202
216
210
218
2.2
2.4
90
90
101
102
112
114
123
126
134
138
145
150
156
162
167
174
178
186
189
198
200
210
OMM-0099_0A
GF-145

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