Honeywell Thermostat EC7895A User Manual

7800 SERIES EC7895A RM7895A Module DATA Dependable long term operation provided by microcomputer First out annunciation and system diagnostics provided by a 2 by 20 column Vacuum Fluorescent Display VFD located the optional Keyboard Display Module Five LEDs for sequence information Local or remote annunciation of EC7895 and RM7895 plug in flame amplifiers and fault information Nonvolatile memory EC7895 and RM7895 retain history files sequencing status after loss of power Remote reset optional Report generation optional Selectable recycle or lockout on loss of airflow Selectable recycle or lockout on loss of flame Shutter drive output Burner controller data optional Flame signal strength Hold status Lockout alarm status Sequence status Sequence time Total cycles of operation Total hours of operation Fault history providing for the six most recent faults Cycles of operation at the time of the fault Fault message and code Hours of operation at the time of the fault Sequence status at the time of the fault Sequence time at the time of the fault Diagnostic information Device type Flame amplifier type Flame failure response time Manufacturing code On Off status of all digital inputs and outputs Selected prepurge time Software revision and version of EC7895 and RM7895 optional Keyboard Display Module Status of configuration jumpers Information Technical Features Provisions 11 14 17 20 26 Yamatake Honeywell EC7895A and RM7895 is a microprocessor integrated burner control for automatically fired gas oil or fuel single burner applications The RM7895 consists of Relay Module Subbase Amplifier and Purge Card Options Keyboard Display Module Personal Computer Interface CONTROLBUS MODULE Remote Display Module and SYSTEM MANAGER Software EC7895 and RM7895 are programmed to provide a level of functional capability and features beyond the capacity of controls provided by the EC7895 and RM7895 include automatic sequencing flame supervision system status indication or self diagnostics and troubleshooting Safety features Airflow switch check Closed loop logic test Dynamic AMPLI CHECK Dynamic input check Dynamic safety relay test Dynamic self check logic Internal hardware status monitoring Tamper resistant timing and logic Access for external electrical voltage checks Application flexibility Communication interface capability 1996 Honeywell Inc All Rights Reserved UL SERIES EC7895A RM7895A RELAY MODULE Ratings see Table 1A and Frequency 100 Vac 10 15 50 or 60 Hz Dissipation RM7895 10W maximum Total Connected Load 2000 VA Total Connected Load 20A maximum type FRN or 10 1 1A RM7895A Terminal Ratings No G Sensor Ground Ground2 Voltage Common Motor Voltage Supply L1 Controller and Limits Interlock Valve Ignition Fuel Valve Sensor Vac 1A pilot duty Vac 9.8 AFL 58.8 ALR inrush Vac 10 15 50 or 60 Hz 10 3,4 Vac 1 mA Vac 9A Vac 4.5A ignition and 50VA pilot duty 4 Vac 2A pilot duty 5 Vac 4.5A ignition 4 to 220 Vac current limited Range of allowable operating frequency 45 to 66 Hz The 7895 must have an earth ground providing a connection between the subbase and the control panel or the equipment Vac 0.5A earth ground wire must be capable of conducting the current to blow the 20A fuse or breaker in event of an internal short The 7895 needs a low impedance ground connection to the equipment frame which in turn needs a low impedance to earth ground For a ground path to be low impedance at RF frequencies the connection must be made with length conductors that have maximum surface areas Wide straps or brackets rather than leadwires are preferred careful to verify that mechanically tightened joints along the ground path such as pipe or conduit threads or surfaces held with fasteners are free of nonconductive coatings and are protected against mating surface corrosion 2000 VA maximum connected load to 7895 Assembly Can also be 100 Vac 1A pilot duty Can also be 65 VA pilot duty with motorized valve 1150 VA inrush 460 VA open 250 VA hold INFORMATION purchasing replacement and modernization products from your TRADELINE wholesaler or distributor refer to the Catalog or price sheets for complete ordering number you have additional questions need further information or would like to comment on our products or services please write or Your local Home and Building Control Sales Office check white pages of your phone directory Home and Building Control Customer Relations 1885 Douglas Drive North Minnesota 55422 4386 Canada Limited Honeywell Limit 35 Dynamic Drive Scarborough Ontario M1V 4Z9 Sales and Service Offices in all principal cities of the world Manufacturing in Australia Canada Finland France Japan Mexico Netherlands Spain Taiwan United Kingdom U S A SERIES EC7895A RM7895A RELAY MODULE Ratings see Table 1B and Frequency 200 Vac 10 15 50 or 60 Hz Dissipation EC7895 10W maximum Total Connected Load 2000 VA Total Connected Load 20A maximum type FRN or 10 1 1B EC7895A Terminal Ratings Vac 1A pilot duty Vac 4A at pF 0.5 20A inrush4 Vac 10 15 50 or 60 Hz 10 3,4 Vac 1 mA Vac 9A Vac 4A at pF 0.5 20A inrush4 Vac 4A at pF 0.5 20A inrush4 Vac 4A at pF 0.5 20A inrush4 to 220 Vac current limited No G N Sensor Ground Ground2 Voltage Common Motor Voltage Supply L1 Controller and Limits Interlock Valve Ignition Fuel Valve Sensor Vac 0.5A Range of allowable operating frequency 45 through 66 Hz The EC7895 must have an earth ground providing a connection between the subbase and the control panel or the equipment earth ground wire must be capable of conducting the current to blow the 20A fuse or breaker in event of an internal short The RM7895 needs a low impedance ground connection to the equipment frame which in turn needs a low connection to earth ground For a ground path to be low impedance at RF frequencies the connection must be with minimum length conductors that have maximum surface areas Wide straps or brackets rather than leadwires are Be careful to verify that mechanically tightened joints along the ground path such as pipe or conduit threads or held together with fasteners are free of nonconductive coatings and are protected against mating surface corrosion 2000 VA maximum connected load to EC7895 Assembly Total load current excluding burner boi