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Table of contents for the manual
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Page 1
1 Gas Fired Door Heater Model B-22 and B-24 Installation & Maintenance Instructions BERNER INTERNA TIONAL CORPORA TION New Castle, Pennsylvania 724-658-3551 l 1-800-245-4455 l www .berner .com l airdoors@berner .com © Copyright 2001 Berner International Corporation[...]
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Page 2
2 I . DESCRIPTION The Berner Gas-Fired Door Heater is designed to instantly direct a stream of heated air toward a large door opening, when the door is opened in cold weather . It utilizes a ring type burner operating on natural gas. The propeller is a special Ductaxial solid aluminum casting, direct connected to an in- dustrial duty , t o t ally e[...]
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Page 3
3 cross-sectional area should be at least equal to the sum of the individual vent areas. The outside end of the vent line should either have a weather- proof vent cap or should be directed downward for weather protection. It should also be screened to prevent foreign ma- terial or insect s from entering the line. Naturally , the end of the line sho[...]
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Page 4
4 ( F ) Fan Starter: Although not normally considered a safety device, the fan starter is wired so that its 13-14 interlock powers the control system. Thus the main fan must be energized before the gas system can be pow- ered. This provides one more assurance, in addition to the Airflow Switch, that the fan is operating before heat comes on. ( G ) [...]
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Page 5
5 TROUBLESHOOTING SYMPT O M S CAUSE F AN WON’T ST A R T 1 ) Selector in “OFF” position 2 ) Check 3-phase line leads for power across all 3 phases (If one line is dead, check fuses or breaker in main disconnect) 3 ) Check fuse on control circuit transformer 4 ) T ry “SUM” setting. If fan runs, but won’t run on “WIN”, check 1THS out d[...]
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Page 6
6 TROUBLESHOOTING SYMPT O M S CAUSE F AN OPERA TES, LITTLE 1 ) Check gas pilot manual cock; should be lef t i n open position OR NO PILOT FLAME, A N D 2 ) Check all gas lines for clogging and for purging of entrapped air “TURN RESET” LIGHTS 3 ) Check for moisture and/or conducting dirt on S p arktrode; check AFTER 5 SECONDS electrode for carbon[...]