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Honeywell EC7895A, RM7895A Fig. 2. Mounting dimensions of EC7895/RM7895 Relay Module and Q7800B Subbase in in. (mm)., Q179 C7012A,C,E,F, Fig. 3. Rectification detectors.

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7800 SERIES EC7895A, RM7895A RELAY MODULE

65-0205 6

Fig. 2. Mounting dimensions of EC7895/RM7895 Relay Module and Q7800B Subbase in in. (mm).

POWER

PILOT

FLAME

MAIN

ALARM

RESET

(127)

5 (127)

M11134

REMOVE ONLY FOR TERMINAL TEST ACCESS.

6-3/32 (155)

BURNER

CONTROL

Fig. 3. Rectification detectors.

THREADED

MOUNTING

HOLES (2)–

10-32 UNF

1 (25)

FLAME ROD

TARGET

CERAMIC

INSULATORS

IGNITION

ELECTRODE

(Q179C ONLY)

BRACKET M1983

3-1/8

(79)

1-21/32

(42) 1-13/32

(36)

3/8 (10)

1/2 (13)

1-1/16

(27)

25/32

(20)

25/32

(20)

2-25/32

(62)

3/32 (2) 11/16

(18)

17/32

(14)

MOUNTING FLANGE

1/2–14 NPSM

LEADWIRES FACEPLATE

3/4–14 NPT

M1962A

3-3/4

(95)

7-7/32

(183)

5-1/8 (130)

3-7/16

(87)

5-1/4 (133)

2 (51)

C7013A C7014A M1847

13/16 (21) 1-1/4 (32) 1-3/8 (35)

1-3/4

(45)

1-1/4 (32) 1-5/16 (33) 5/16

(8)

Q179 C7012A,C,E,F

Contents

Main PRODUCT DATA 7800 SERIES EC7895A, RM7895A Relay Module 65-0205 GENERAL FEATURES Contents ORDERING INFORMATION SPECIFICATIONS Page only 7800 SERIES EC7895A, RM7895A RELAY MODULE Fig. 2. Mounting dimensions of EC7895/RM7895 Relay Module and Q7800B Subbase in in. (mm). 65-0205 6 BURNER CONTROL Q179 C7012A,C,E,F C7013A C7014A 7800 SERIES EC7895A, RM7895A RELAY MODULE Fig. 4. Ultraviolet detectors in in. (mm). C7027 C7035 C7076A C7044 PRINCIPAL TECHNICAL FEATURES Safety Shutdown (Lockout) Occurs If: SAFETY PROVISIONS Internal Hardware Status Monitoring Closed Loop Logic Test WARNING When Installing this Product Humidity Vibration Weather Mounting Wiring Subbase WIRING Page Fig. 8. Wiring the EC7895. ASSEMBLY Mounting RM7895 Relay Module Mounting Install the EC7895 or RM7895 with a plug-in motion rather than a hinge action. Installing ST7800 Purge Card Page Fig. 14. Flame detector wiring. INFRARED (C7015) ULTRAVIOLET (C7027/C7035/C7044) SOLID STATE SELF-CHECKING ULTRAVIOLET (C7012E,F) SOLID STATE ULTRAVIOLET (C7012A,C) SOLID STATE SELF-CHECKING ULTRAVIOLET (C7061A) C7076A,D ULTRAVIOLET DETECTOR OPERATION Sequence of Operation Initiate Standby Normal Start-Up Prepurge Equipment Recommended General Instructions MAKE SURE THAT ALL MANUAL FUEL SHUT-OFF VALVE(S) ARE CLOSED. call for heat. WARNING CHECKOUT WARNING Equipment Recommended Checkout Summary Preliminary Inspection Flame Detector Acceptable Flame Flame Signal Measurement (Fig. 18 and Table 5) Initial Lightoff Check for Proved Pilot Page Initial Lightoff Check for Direct Spark Ignition Pilot Turndown Test (All Installations using a Pilot) is clipped is not clipped Ignition Interference Test (All Flame Rods) To Eliminate Ignition Interference Hot Refractory Saturation Test (All Infrared Detectors) Hot Refractory Hold-In Test (Rectifying Photocell or All Infrared Detectors) Ultraviolet Sensor, Ignition Spark Response Test (All Ultraviolet Detectors) Response To Other Ultraviolet Sources Flame Signal With Hot Combustion Chamber (All Installations) Safety Shutdown Tests (All Installations) TROUBLESHOOTING EC7895 or RM7895 System Diagnostics Diagnostic Information Index Historical Information Index Page (Continued)