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51
37
A
IRFLOW
C
HARTS
(267MAX)
The 267MAX units have three airflow charts for their installer adjustable fan curves. Refer to
in this manual for instructions on how to adjust the circuit board DIP switches.
Continued
next page ►
Hi 3
Hi 2
Hi 1
Pressure
Drop
Supply
Airflow
Exhaust
Airflow
Pressure
Drop
Supply
Airflow
Exhaust
Airflow
Pressure
Drop
Supply
Airflow
Exhaust
Airflow
(“w.g.) (Pa) (cfm)
(cfm)
(“w.g.) (Pa) (cfm)
(cfm)
(“w.g.) (Pa) (cfm)
(cfm)
1.10 274
-
325
0.86 214
-
250
0.65 162
-
222
1.12 279
-
324
0.87 217
-
249
0.66 164
221
225
1.14 284
-
322
0.88 219
-
248
0.67 167
219
222
1.16 289
-
320
0.89 222
-
247
0.68 169
216
220
1.18 294
-
319
0.90 224
-
245
0.69 172
214
217
1.20 299
-
317
0.91 227
-
244
0.70 174
211
214
1.22 304
-
315
0.92 229
-
242
0.71 177
209
212
1.24 309
-
313
0.93 232
-
241
0.72 179
207
209
1.26 314
-
311
0.94 234
-
240
0.73 182
204
206
1.28 319
-
309
0.95 237
-
238
0.74 184
202
203
1.30 324
-
307
0.96 239
250
236
0.75 187
199
201
1.32 329
-
305
0.97 242
248
235
0.76 189
197
198
1.34 334
323
303
0.98 244
246
233
0.77 192
194
195
1.36 339
320
300
0.99 247
243
232
0.78 194
192
192
1.38 344
317
298
1.00 249
241
230
0.79 197
190
190
1.40 349
313
296
1.01 252
239
228
0.80 199
187
187
1.42 354
310
293
1.02 254
237
227
0.81 202
185
184
1.44 359
307
291
1.03 257
235
225
0.82 204
182
181
1.46 364
304
288
1.04 259
233
223
0.83 207
180
179
1.48 369
300
286
1.05 262
230
221
0.84 209
177
176
1.50 374
297
283
1.06 264
228
219
0.85 212
175
173
1.52 379
293
280
1.07 267
226
217
0.86 214
172
170
1.54 384
290
277
1.08 269
223
215
0.87 217
170
168
1.56 389
287
275
1.09 272
221
214
0.88 219
168
165
1.58 394
283
272
1.10 274
219
212
0.89 222
165
162
1.60 399
279
269
1.11 277
216
210
0.90 224
163
160
1.62 404
276
266
1.12 279
214
207
0.91 227
160
157
1.64 409
272
263
1.13 282
211
205
0.92 229
158
154
1.66 414
268
259
1.14 284
209
203
0.93 232
155
151
1.68 419
265
256
1.15 287
207
201
0.94 234
153
149
1.70 424
261
253
1.16 289
204
199
0.95 237
150
146
1.72 429
257
250
1.74 434
253
246
