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EC7823A
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Honeywell EC7823A, RM7823A Installation Instructions Manual

EC7823A;RM7823A
7800 SERIES Relay Modules
INSTALLATION INSTRUCTIONS

APPLICATION

Functions provided by the EC/RM7823A include flame monitoring, self-diagnostics and troubleshooting.The EC/RM7823A is a solid state replacement for the R7023B,C Flame Detector Relays.
The EC7823/RM7823 is a flame detector relay only. A switchable primary control must be used to provide safe-start check, safety lockout, load switching and other functions required in Flame Safeguard systems.
This document provides installation and static checkout instructions. Other applicable publications are:
Form
Number Description
63-2278 Q7700A Network Interface Unit Product Data
65-0084 Q7800A,B 22-Terminal Wiring Subbase Product
Data
65-0090 S7800A Keyboard Display Module Product Data.
65-0091 S7810A Data ControlBus Module™ Product Data
65-0095 S7820 Remote Reset Module Product Data
65-0097 221729C Dust Cover Packing Sheet
65-0109 R7824, R7847, R7848, R7849, R7851, R7861,
R7886 Flame Amplifiers for the 7800 SERIES Product Data
65-0131 221818A Extension Cable Assembly Product Data
65-0229 7800 SERIES Relay Modules Checkout and Test

SPECIFICATIONS

Electrical Ratings, see Table 3:
Voltage and Frequency:
EC7823A: 220-240 Vac +10%/-15%, 50/60 Hz ±10%. RM7823A: 120 Vac, +10%/-15%, 50/60 Hz, ± 10%. Power Dissipation:
10W maximum. Maximum Total Connected Load: 2000 VA. Fusing: Total Connected Load: 15A, type SC, Fast Blow, or
equivalent.
Environmental Ratings:
Ambient Temperature:
Operating: -40°F to 140°F (-40°C to +60°C).
Storage: -40°F to 150°F (-40°C to +66°C). Humidity: 85% relative humidity continuous, noncondensing. Vibration: 0.5G environment.
Approvals:
RM7823A:
Underwriters Laboratories Inc. Listed: File No. MP268,
Guide No. MCCZ. Canadian Standards Association Certified: LR9S329-3. Factory Mutual Approved: Report No. J.I.1V9A0.AF. IRI Acceptable. Federal Communications Commission:
Part 15, Class B, Emissions.
EC7823A:
Factory Mutual Approved: Report No. J.I.1V9A0.AF. IRI Acceptable. Federal Communications Commission:
Part 15, Class B, Emissions.
® U.S. Registered Trademark Copyright © 2003 Honeywell International Inc. All Rights Reserved
66-1086-2
EC7823A;RM7823A 7800 SERIES RELAY MODULES

INSTALLATION

When Installing this Product…

1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.
2. Check the ratings given in the instructions and marked on the product to make sure the product is suitable for the application.
3. Installer must be a trained, experienced, flame safeguard service technician.
4. After installation is complete, check out the product operation as provided in these instructions.
WARNING
Fire or Explosion Hazard. Can cause property damage, severe injury or death.
To prevent possible hazardous burner operation, verify safety requirements each time a control is installed on a burner.
WARNING
Electrical Shock Hazard/Equipment Damage Hazard. Can cause severe injury, death or property damage.
Disconnect the power supply before beginning installation. More than one power supply disconnect may be required.
IMPORTANT
1. Wiring connections for the relay modules are unique;
refer to Fig. 2 or the correct Specifications for proper subbase wiring.
2. Wiring must comply with all applicable codes,
ordinances and regulations.
3. Wiring must comply with NEC Class 1 (Line Voltage)
wiring.
4. Loads connected to the EC/RM7823A must not
exceed those listed on the EC/RM7823A label or the Specifications; see Table 3 or 4.
5. All external timers must be listed or
component-recognized by authorities who have proper jurisdiction.
6. For on-off gas-fired systems, some authorities who
have jurisdiction prohibit the wiring of any limit or operating contacts in series between the flame safeguard control and the main fuel valve(s).
7. Two flame detectors can be connected in parallel
with the exception of Infrared Flame Detectors (C7015).
8. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, can cause interference with radio communications. It has been tested and found to comply with the limits for a Class B computing device of Part 15 of FCC rules which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area may cause interference; in which case, the users at their own expense may be required to take whatever measures are required to correct this interference.
9. This digital apparatus does not exceed the Class B
limits for radio noise for digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

Location

Humidity
Install the relay module where the relative humidity never reaches the saturation point. The relay module is designed to operate in a maximum 85% relative humidity continuous, noncondensing, moisture environment. Condensing moisture can cause a safety shutdown.
Vibration
Do not install the relay module where it could be subjected to vibration in excess of 0.5G continuous maximum vibration.
Weather
The relay module is not designed to be weather tight. When installed outdoors, the relay module must be protected by an approved weather-tight enclosure.

Mounting Q7800 Wiring Subbase

1. Mount the Q7800 Subbase in any position except horizontally with the bifurcated contacts pointing down. The standard vertical position or with the bifurcated contacts point up is recommended. Any other position decreases the maximum ambient temperature rating.
2. Select a location on a wall, burner or electrical panel. The wiring subbase can be mounted directly in the control cabinet. Be sure to allow adequate clearance for servicing, installation, access or removal of the EC/RM7823A, dust cover, flame amplifier, flame amplifier voltage probes, electrical signal voltage probes and electrical field connections.
3. For surface mounting, use the back of the subbase as a template to mark the four screw locations. Drill the pilot holes.
4. Securely mount the subbase using four no. 6 screws (not provided).

Wiring Subbase

WARNING
Electrical Shock Hazard. Can cause serious injury, death or equipment/ control damage.
Disconnect the power supply before beginning installation. More than one power supply disconnect may be required.
1. For proper subbase wiring, refer to Figs. 2, 3, 4 or 5.
2. For proper remote wiring of the Keyboard Display
Module, refer to the Specifications for the Keyboard Display Module (65-0090), Network Interface Unit (63-2278), Data ControlBus Module™ (65-0091) or Extension Cable Assembly (65-0131).
3. Disconnect the power supply from the main disconnect before beginning installation to prevent electrical shock and equipment damage. More than one disconnect may be required.
4. All wiring must comply with all applicable electrical codes, ordinances and regulations. Wiring must comply with NEC, Class 1 (Line Voltage) wiring.
5. For recommended wire size and type, see Table 1.
6. For recommended grounding practices, see Table 2.
66-1086—2 2
3
A
RESET PUSHBUTTON
STATUS LEDs
OPTIONAL KEYBOARD DISPLAY MODULE
DDL
RS485
1
DDL COMMUNICATIONS
FIELD WIRING INTERNAL WIRING
1
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
OUTPUTS SHOWN ARE WHEN THE DEVICE DOES NOT SENSE FLAME.
2
3
120 Vac/220-240 Vac,
MICROCOMPUTER
RELAY DRIVE CIRCUIT
5
REMOTE RESET
1
L1 (HOT)
50/60 Hz
9K
EC7823A;RM7823A 7800 SERIES RELAY MODULES
L2
FLAME SIGNAL
POWER SUPPLY
TEST
A1
A2
B1
B2
9K
PLUG-IN FLAME AMPLIFIER
CONTROL POWER
10
8
9
14
L2
TEST JACK
F
G
22
2
NC
COMMON
NO
NC
COMMON13
NO15
M15079
Fig. 1. Internal block diagram of the EC/RM7823A (See Fig. 6 for detailed wiring instructions).
Table 1. Recommended wire sizes and part numbers.
Application Recommended Wire Size Recommended Part Numbers
Line voltage terminals 14, 16 or 18 AWG copper conductor, 600 volt insulation,
TTW60C, THW75C, THHN90C.
moisture-resistant wire.
Keyboard Display Module 22 AWG two-wire twisted pair with ground, or five wire.
Data ControlBus Module™ 22 AWG two-wire twisted pair with ground, or five wire.
Belden
Belden
®
8723 shielded cable or equivalent.
®
8723 shielded cable or equivalent.
Remote Reset Module 22 AWG two-wire twisted pair, insulated for low voltage. —
Communications Interface ControlBus Module
13 Vdc full-wave rectified transformer power input.
22 AWG two-wire twisted pair with ground.
18 AWG wire insulated for voltages and temperatures for given application.
®
Belden
8723 shielded cable or equivalent.
TTW60C, THW75C, THHN90C.
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 15A fast acting 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.
3 66-1086—2
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