Instruction/ maintenance manual of the product EC7820A Honeywell
Go to page of 8
® U.S. Registered Trademark Copyright © 1998 Honeywell Inc. • All Rights Reserved SPECIFICA TION DA T A 7800 SERIES EC7810A, EC7820A Relay Modules GENERAL The Honeywell EC7810/EC7820A Relay Module.
2 7800 SERIES EC7810A, EC7820A RELA Y MODULES 66-2040 Fig. 1 Mounting dimensions of relay module and wiring subbase in millimeters only . SPECIFICA TIONS T able 1A. EC7810A T erminal Ratings. 127 127 BURNER CONTROL 133 M12821 1 REMOVE ONLY FOR TERMINAL TEST ACCESS.
7800 SERIES EC7810A, EC7820A RELA Y MODULES 3 66-2040 T able 1B. EC7820A T erminal Ratings. T able 2. Recommended grounding practices. Ground type Recommended Practice Earth ground (subbase and relay module). 1 . Use to provide a connection between the subbase and the control panel of the equipment.
4 7800 SERIES EC7810A, EC7820A RELA Y MODULES 66-2040 T able 3. Sequence T iming for Normal Operation. * Standby and Run can be an infinite period. ** W aiting T ime is determined by the ST7800A Purge Card selected. *** Second Safety T ime is Main T rial T ime plus Flame Failure Response T ime.
7800 SERIES EC7810A, EC7820A RELA Y MODULES 5 66-2040 Communications: Q7700B1004 Network Interface Unit with universal 100 to 250 V ac, 50/60 Hz external power supply , external modem required. QS7800A1001 ControlBus Module, standard. QS7800B1000 ControlBus Module, multidrop.
6 7800 SERIES EC7810A, EC7820A RELA Y MODULES 66-2040.
7800 SERIES EC7810A, EC7820A RELA Y MODULES 7 66-2040.
8 7800 SERIES EC7810A, EC7820A RELA Y MODULES 66-2040 Honeywell Europe S.A. 3 Avenue du Bourget 1140 Brussels Belgium Honeywell Asia Pacific Inc. Room 3213-3225 Sun Hung Kai Centre No.
An important point after buying a device Honeywell EC7820A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell EC7820A yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell EC7820A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell EC7820A you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell EC7820A will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell EC7820A, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell EC7820A.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell EC7820A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell EC7820A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
