Aerco BENCHMARK 2500DF User Manual page 158

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-3: Header Temperature for a Building Reference Temperature of 65F
Air
0.6
0.8
Temp
65
65
65
60
68
69
55
71
73
50
74
77
45
77
81
40
80
85
35
83
89
30
86
93
25
89
97
20
92
101
15
95
105
10
98
109
5
101
113
0
104
117
-5
107
121
-10
110
125
-15
113
129
-20
116
133
Table F-4: Header Temperature for a Building Reference Temperature of 70F
Air
0.6
0.8
Temp
70F
70
70
65F
73
74
60F
76
78
55F
79
82
50F
82
86
45F
85
90
40F
88
94
35F
91
98
30F
94
102
25F
97
106
20F
100
110
15F
103
114
10F
106
118
5F
109
122
0F
112
126
-5F
115
130
-10F
118
134
-15F
121
138
-20F
124
142
Page 158 of 234
05/21/2014
RESET RATIO
1.0
1.2
1.4
65
65
65
70
71
72
75
77
79
80
83
86
85
89
93
90
95
100
95
101
107
100
107
114
105
113
121
110
119
128
115
125
135
120
131
142
125
137
149
130
143
156
135
149
163
140
155
170
145
161
177
150
167
201
RESET RATIO
1.0
1.2
1.4
70
70
70
75
76
77
80
82
84
85
88
91
90
94
98
95
100
105
100
106
112
105
112
119
110
118
126
115
124
133
120
130
140
125
136
147
130
142
154
135
148
161
140
154
168
145
160
175
150
166
182
155
172
189
160
178
196
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
1.6
1.8
2.0
65
65
65
73
74
75
81
83
85
89
92
95
97
101
105
105
110
115
113
119
125
121
128
135
129
137
145
137
146
155
145
155
165
153
164
175
161
173
185
169
182
195
177
191
205
185
200
215
193
209
218
1.6
1.8
2.0
70
70
70
78
79
80
86
88
90
94
97
100
102
106
110
110
115
120
118
124
130
126
133
140
134
142
150
142
151
160
150
160
170
158
169
180
166
178
190
174
187
200
182
196
210
190
205
198
214
206
214
2.2
2.4
65
65
76
77
87
89
98
101
109
113
120
125
131
137
142
149
153
161
164
173
175
185
186
197
197
209
208
219
2.2
2.4
70
70
81
82
92
94
103
106
114
118
125
130
136
142
147
154
158
166
169
178
180
190
191
202
202
214
213
OMM-0099_0A
GF-145

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