Honeywell Burner EC7820A User Manual

7800 SERIES  
EC7810A, EC7820A Relay Modules  
SPECIFICATION DATA  
FEATURES  
Safety features:  
— Interlock check.  
— Dynamic AMPLI-CHECK™  
— Closed loop logic test.  
— Dynamic input check.  
— Dynamic safety relay test.  
— Dynamic self-check logic.  
— Expanded safe-start check.  
— Internal hardware status monitoring.  
— Low Fire Start Switch test.  
— Tamper resistant timing and logic.  
Ignition attempts: 1 or 5. Selectable by model number.  
Access for external electrical voltage checks.  
Application flexibility.  
Dependable, long-term operation provided by microcomputer  
technology.  
First-out annunciation and system diagnostics provided by a  
2 row by 20 column vacuum fluorescent display (VFD)  
located on the KDM (optional).  
Five sequence information light emitting diodes (LED) with  
symbols for Power, Pilot, Flame, Main and Alarm (see Fig. 1).  
Interchangeable plug-in flame amplifiers.  
Nonvolatile memory; EC7810/EC7820 retain history files and  
sequencing status after loss of power.  
Remote reset (subject to application approval; optional).  
Remote mounting of KDM (subject to application approval).  
Burner control data available on the optional KDM:  
— Flame signal strength.  
GENERAL  
The Honeywell EC7810/EC7820A Relay Module is a  
microprocessor-based integrated burner control for  
automatically fired gas, oil or combination fuel single burner  
atmospheric (EC7810A) or atmospheric with fan (EC7820A)  
applications. The EC7810A/EC7820A system consists of the  
relay module, wiring subbase, amplifier and purge card. The  
optional keyboard display module (KDM) can be mounted on  
the relay module or on the face of a panel door. The KDM can  
also be mounted remotely from the panel if this is approved  
for the application.  
— Hold status.  
— Lockout/alarm status.  
— Sequence status.  
— Sequence time.  
— Total cycles of operation.  
— Total hours of operation.  
— Fault history providing 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.  
The EC7810/EC7820 is programmed to provide a level of  
safety, functional capability and features beyond the capacity  
of conventional controls.  
— Diagnostic information:  
Device type.  
Flame amplifier type.  
Flame failure response time (FFRT).  
Manufacturing code.  
On/off status of all digital inputs and outputs.  
Selected prepurge time.  
The basic functions of the EC7810/EC7820A include  
automatic burner sequencing, flame supervision, system  
status indication, system or self-diagnostics and  
troubleshooting.  
Software revision and version of relay module and  
optional KDM.  
Status of configuration jumper.  
Status of Run/Test Switch.  
® U.S. Registered Trademark  
66-2040  
Copyright © 1998 Honeywell Inc.  
All Rights Reserved  
 
7800 SERIES EC7810A, EC7820A RELAY MODULES  
Table 1B. EC7820A Terminal Ratings.  
Terminal No.  
Abbreviation  
Description  
Ratings  
a
G
Flame Sensor Ground  
a
Earth G  
Earth Ground  
N
Line Voltage Common (Neutral)  
Alarm (Normally Open)  
Burner/Blower Motor  
Line Voltage Supply (L1)  
Limits and Burner Control  
Airflow Switch Input  
Pilot Valve 1 (interrupted)  
Main Fuel Valve  
3
AL  
FAN  
L1  
220/230/240 Vac, 1A, 10A inrush for 5000 cycles.  
220/230/240 Vac, 4A at P.F. = 0.5, 20A inrush.  
4
b
5
220-240 Vac (+10%/-15%), 50/60 Hz (±10%).  
6
RT  
220/230/240 Vac, 5A (maximum).  
220/230/240 Vac, 1 mA.  
7
LD2  
PV1  
MV  
IGN  
c
8
220/230/240 Vac, 4A at P.F. = 0.5, 20A inrush.  
c
9
220/230/240 Vac, 4A at P.F. = 0.5, 20A inrush.  
c
10  
Ignition  
220/230/240 Vac, 4A at P.F. = 0.2.  
F(11)  
Flame Signal  
135 to 220 Vac, current limited.  
d
13  
COM  
MOD  
Firing Rate Common  
Firing Rate Modulate  
Control Voltage  
220/230/240 Vac, 4A at P.F. = 0.5.  
d
14  
220/230/240 Vac, 4A at P.F. = 0.5.  
16  
220-240 Vac (+10%/-15%).  
220/230/240 Vac, 1 mA.  
220/230/240 Vac, 1 mA.  
220/230/240 Vac, 1 mA.  
17  
ES2  
ES1  
Preignition Interlock Input  
Low Fire Switch Input  
Lockout Input  
18  
20  
LOS  
PV2  
c
21  
22  
Pilot Valve 2 (Intermittent)  
Shutter  
220/230/240 Vac, 4A at P.F.= 0.5, 20A inrush.  
e
SHTR  
220-240 Vac, 0.25A.  
a
b
c
d
e
See Table 2.  
2000 VA maximum connected load to 7800 SERIES Relay Module Assembly.  
Total load current, excluding burner/boiler motor and firing rate outputs cannot exceed 5A, 25A inrush.  
Can also be 24 Vac, 3A at PF = 0.5.  
220-240 Vac to 120 Vac, 10 VA (minimum) stepdown transformer (not provided) required to drive shutter.  
Table 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. Earth ground must be capable of conducting enough current  
to blow the 20A fuse (or breaker) in the event of an internal short circuit.  
2. Use wide straps or brackets to provide minimum length, maximum surface  
area ground conductors. If a leadwire must be used, use 14 AWG copper  
wire.  
3. Make sure that mechanically-tightened joints along the ground path are free  
of nonconductive coatings and protected against corrosion on mating  
surfaces.  
Signal ground (KDM, Data ControlBus  
Module™, Communications Interface  
ControlBus™ Module).  
Use the shield of the signal wire to ground the device to the signal ground  
terminal 3(c) of each device. Connect the shield at both ends of the daisy chain  
to earth ground.  
3
66-2040  
 
7800 SERIES EC7810A, EC7820A RELAY MODULES  
Table 3. Sequence Timing for Normal Operation.  
First  
Safety  
Time  
Main  
Trial  
Time***  
Purge or  
Pilot  
Stab.  
Main  
Ignition  
Device  
Initiate Standby Waiting Preignition  
Stab. Run Attempts  
EC7810A1027 2 sec  
EC7810A1035 2 sec  
EC7820A1026 2 sec  
EC7820A1034 2 sec  
*
*
*
*
**  
**  
**  
**  
3 sec  
3 sec  
3 sec  
3 sec  
5 or 10 sec 5 sec 5 or 8 sec 5 sec  
5 or 10 sec 5 sec 5 or 8 sec 5 sec  
5 or 10 sec 5 sec 5 or 8 sec 5 sec  
5 or 10 sec 5 sec 5 or 8 sec 5 sec  
*
*
*
*
1
5
1
5
* Standby and Run can be an infinite period.  
** Waiting Time is determined by the ST7800A Purge Card selected.  
*** Second Safety Time is Main Trial Time plus Flame Failure Response Time.  
Electrical Ratings (See Tables 1A and 1B):  
Voltage and Frequency: 220 to 240 Vac (+10%/-15%),  
50/60 Hz (±10%).  
Oil Approvals:  
EC7810A1027: DIN-5F104/96.  
EC7820A1026: DIN-5F105/96.  
EN298: “Automatic gas burner systems for gas burners  
and gas burning appliances with or without fans.”  
Keyboard Display Module (Optional): 13 Vdc peak  
fullwave rectified (+20%/-15%).  
Power Dissipation:  
Relay Module: 10W maximum.  
KDM: 3W maximum.  
Maximum Total Connected Load: 2000 VA.  
Fusing (Total Connected Load): 20A, type FRN or  
equivalent.  
Please note the following to comply with EN60730 for remote  
mounting of the KDM and/or remote reset. It is necessary to  
provide electrical separation using insulation at least  
equivalent to double or reinforced insulation. Accomplish this  
by either:  
Optically isolating the communication and/or remote  
reset lines from the control cabinet or  
Providing physical separation from the communication  
and/or remote reset lines using electrical conduit and a  
remote display cover assembly (part no. 204718A) or  
other suitable enclosure that meets IP40 class of  
protection.  
Environmental Ratings:  
Ambient Temperatures:  
Operating: -40°C to 60°C (-40°F to 140°F).  
Storage: -40°C to 66°C. (-40°F to 150°F).  
Humidity: 85% RH continuous, noncondensing.  
Vibration: 0.5G environment.  
Dimensions:  
Mounting:  
See Fig. 1 and 2.  
Q7800A Wiring Subbase for Panel Mount: To meet EN60730  
requirements, mount the relay module in a secured panel  
which meets IP40 class of protection.  
Weight:  
Relay Module: 0,730 kg unpacked.  
KDM: 0,113 kg unpacked.  
Required Components:  
Plug-in Flame Signal Amplifier: See Table 2.  
ST7800A Plug-in Purge Timer Cards: Selectable from two  
seconds to 30 minutes.  
IMPORTANT  
Flame Detection System available for use with  
EC7810/EC7820. Select your plug-in Flame Signal  
Amplifier and applicable Flame Detector from Table 4.  
Q7800A Wiring Subbase.  
Accessories:  
Keyboard Display Modules (KDM) (Optional):  
S7800A1001 English language.  
S7800A1035 French language.  
S7800A1043 German language.  
S7800A1050 Italian language.  
S7800A1068 Spanish language.  
S7800A1118 Katakana (Japanese) language.  
S7800A1126 Portuguese language.  
S7800B1009 Chinese language.  
Approvals:  
This product complies with the following European directives:  
Gas Appliance Directive (90/269/EEG).  
Low Voltage Directive (73/23/EEG).  
EMC Directive (89/336/EEG).  
GASTEC (CE-63AP3070/1).  
Factory Mutual: J.I.0Y0A9.AF.  
66-2040  
4
 
7800 SERIES EC7810A, EC7820A RELAY MODULES  
Miscellaneous:  
Communications:  
S7820A1007 Remote Reset Module.  
Q7700B1004 Network Interface Unit with universal 100 to  
250 Vac, 50/60 Hz external power supply, external  
modem required.  
QS7800A1001 ControlBus Module, standard.  
QS7800B1000 ControlBus Module, multidrop.  
QS7800C1009 ControlBus Module, data acquisition  
modules.  
QS7800D1008 ControlBus Module, Armstrong.  
QS7800E1007 ControlBus Module, Pulsafeeder.  
QS7850A1006 ControlBus Module, General Purpose  
Interface.  
ZM7850A1001 Combustion System Manager™ Software.  
ZM7850B1000 SYSNet™ Facilities Integration Software.  
S7810A1009 Data ControlBus™ Module (if no KDM is  
used).  
203541 Data ControlBus Connector, 5-wire.  
203765 Remote Display Mounting Bracket.  
221729 Relay Module Dust Cover.  
204718A Keyboard Display Module Cover, NEMA 4, clear.  
204718B Keyboard Display Module Cover, NEMA 1, clear.  
204718C Keyboard Display Module Cover, NEMA 4, clear  
with reset button.  
205321B Flush Display Mounting Kit.  
221818A Extension Cable, display, (1524 mm).  
221818C Extension Cable, display, (3048 mm).  
123514A Rectification Flame Simulator.  
203659 Ultraviolet Flame Simulator.  
203968A Remote Display Power Supply, 13 Vdc, plug-in.  
S7810B1007 Data ControlBus™ Module, Multi-Drop  
Switch Module.  
Table 4. Flame Detection System  
Plug-in Flame Signal Amplifiers  
Applicable Flame Detectors  
Flame Failure  
Response  
Time  
Type  
Color Self-Checking  
Model  
Fuel  
Type  
Models  
Rectification Green  
No  
R7847A  
1 or 2 sec  
maximum.  
Gas  
Rectifying  
C7004, C7007, C7011.  
Complete Assemblies:  
C7008, C7009, Q179.  
Flame Rod  
a
Holders  
No  
R7847A  
R7847B  
1 or 2 sec  
maximum.  
Oil  
Rectifying  
Photocell  
C7003, C7010, C7013,  
C7014.  
b
Dynamic  
Ampli-Check™  
1 or 2 sec  
maximum.  
Gas  
Rectifying  
C7004, C7007, C7011.  
Complete Assemblies:  
C7008, C7009, Q179.  
Flame Rod  
a
Holders  
Dynamic  
Ampli-Check™  
R7847B  
R7849A  
R7849B  
R7861A  
R7886A  
1 or 2 sec  
maximum.  
Oil  
Rectifying  
Photocell  
C7003, C7010, C7013,  
C7014.  
d
b
c
d
Ultraviolet  
Purple  
Blue  
No  
1 or 2 sec  
maximum.  
Gas, oil  
Gas, oil  
Gas, oil  
Ultraviolet  
(Minipeeper)  
C7027,C7035, C7044 .  
d
Dynamic  
Ampli-Check™  
1 or 2 sec  
maximum.  
Ultraviolet  
(Minipeeper)  
C7027,C7035, C7044 .  
g
c,f  
c,f  
Dynamic  
Self-Check  
1 or 2 sec  
maximum.  
Ultraviolet  
C7061.  
g
Dynamic  
2 sec  
Gas, oil, Ultraviolet  
C7076.  
Self-Check  
maximum.  
coal  
(Adjustable  
Sensitivity)  
a
b
c
Order flame rod separately; see holder instructions.  
Use only Honeywell Photocell part number 38316.  
Dynamic Self-Check ultraviolet amplifiers should be used only on burners that cycle on-off at least once every 24 hours.  
Appliances with burners that remain on continuously for 24 hours or longer should use C7061A Flame Detector with R7861A  
Amplifier.  
C7027, C7035 and C7044 Flame Detectors should be used only on burners that cycle on-off at least once every 24 hours.  
Appliances with burners that remain on continuously for 24 hours or longer should use C7061A Flame Detector with R7861A  
Amplifier as ultraviolet flame detection system.  
Circuitry tests the flame signal amplifier at least 12 times a minute during burner operation and shuts down the boiler if the  
amplifier fails.  
Circuitry tests all electronic components in the flame detection system (amplifier and detector) 12 times a minute during  
burner operation and shuts down the burner if the detection system fails.  
d
e
f
g
A 220/240 Vac to 120 Vac 10 VA step-down transformer (not provided) must be used to drive the shutter.  
5
66-2040  
 
66-2040  
6
 
7
66-2040  
 
Home and Building Control  
Honeywell Inc.  
Honeywell Plaza  
P.O. Box 524  
Minneapolis MN 55408-0524  
Home and Building Control  
Honeywell Asia Pacific Inc.  
Room 3213-3225  
Sun Hung Kai Centre  
No. 30 Harbour Road  
Wanchai  
Honeywell Limited-Honeywell Limitée  
155 Gordon Baker Road  
North York, Ontario  
M2H 3N7  
Hong Kong  
Honeywell Latin American Region  
480 Sawgrass Corporate Parkway  
Suite 200  
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Sunrise FL 33325  
Belgium  
Printed in U.S.A. on recycled  
paper containing at least 10%  
post-consumer paper fibers.  
66-2040 G.R. 3-98  
 

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