65-0120—1
2
RM7838B
TABLE OF CONTENTS • ORDERING INFORMATION
Table of Contents
Ordering Information ................................................. 2
Specifications .............................................................. 3
Principal Technical Features .................................... 10
Safety Provisions ...................................................... 10
Installation ............................................................... 12
Operation ................................................................. 24
Static Checkout ......................................................... 33
Checkout .................................................................. 35
Troubleshooting ........................................................ 42
Tables:
Table 1—Terminal Ratings ....................................... 3
Table 2—Flame Detection Systems ........................... 4
Table 3—Sequence Status Display Information ...... 28
Table 4—Selectable Messages ................................ 30
Table 5—Expanded Annunciator ............................ 32
Table 6—Site Configurable Jumper Options ........... 33
Table 7—Static Checkout ....................................... 34
Table 8—Flame Signal ........................................... 36
Table 9—Sequence and Status Hold Messages ....... 42
Table 10—Accessing Historical
and Diagnostic Selectable Messages .................. 45
Table 11—Selectable Messages .............................. 46
Table 12—Hold and Fault Message Summary ........ 49
Table 13—Expanded Annunciator Hold Codes ....... 52
Table 14—Expanded Annunciator Fault Codes ...... 52
Table 15—Expanded Annunciator Diagnostic
Current Status Messages .................................... 53
Figures:
Fig. 1—Mounting dimensions of the RM7838B
Relay Module and Q7800A Subbase, in in. (mm) ..... 6
Fig. 2—Mounting dimensions of the RM7838B
Relay Module and Q7800B Subbase, in in. (mm) ..... 6
Fig. 3—Mounting dimensions of the Keyboard
Display Module in in. (mm) .....................................
7
Fig. 4—Rectification Detectors ....................................
7
Fig. 5—Ultraviolet detectors ........................................
8
Fig. 6—Infrared detectors ............................................
9
Fig. 7—Internal block diagram of the RM7838B
(See Figs. 8 or 9 for detailed wiring
instructions) ..........................................................
13
Fig. 8—RM7838B wiring with S445 start-stop
station ...................................................................
16
Fig. 9—RM7838B wiring with separate start-stop
station ...................................................................
17
Fig. 10—RM7838B wiring with separate start
and stop stations with 4 to 20 mA firing rate
control circuit ........................................................
18
Fig. 11—Wiring the Keyboard Display Module with
Communication Interface ControlBus Module .......
19
Fig. 12—Wiring for multiple Keyboard Display
Modules ................................................................
19
Fig. 13—Electrical panel installation .........................
20
Fig. 14—Wall or burner installation ..........................
20
Fig. 15—ST7800 Purge Card installation ..................
20
Fig. 16—Keyboard Display Module mounting ...........
21
Fig. 17—DATA CONTROLBUS MODULE™
mounting ...............................................................
21
Fig. 18—Remote mounting of Jkeyboard
Display Module .....................................................
22
Fig. 19—Flame signal amplifier mounting .................
22
Fig. 20—Flame detector wiring .................................
23
Fig. 21—Operation of the RM7838B Relay
Module ..................................................................
25
Fig. 22—Operation of the RM7838B Relay
Module ..................................................................
26
Fig. 23—Keyboard Display Module and sequence .....
27
Fig. 24—(
◊
) SCROLL pushbutton function .................
29
Fig. 25 (
↔
)—Change-Level pushbutton function .......
29
Fig. 26—MODE pushbutton function .........................
30
Fig. 27—SAVE function .............................................
30
Fig. 28—Selectable site-configurable jumpers............
33
Fig. 29—Flame signal measurement ..........................
36
Fig. 30—Flame-out timer lockout...............................
39
Fig. 31—Lockout message state 1 ..............................
48
Fig. 32—Lockout message state 2 ..............................
49
Fig. 33—Lockout message state 3 ..............................
49
Fig. 34—Flush mounting of Keyboard Display
Module template ....................................................
54
Ordering Information
When purchasing replacement and modernization products from your 7800 SERIES distributor, refer to the TRADELINE
®
Catalog for
complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Home and Building Control Sales Office (check white pages of your phone directory).
2. Home and Building Control Customer Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 (612) 951-1000
In Canada—Honeywell Limited/Honeywell Limitée, 740 Ellesmere Road, Scarborough, Ontario M1P2V9. International Sales
and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan,
Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
Summary of Contents for RM7838B Series
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