Honeywell RM7824A manual

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Go to page of

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Honeywell RM7824A, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Honeywell RM7824A one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of Honeywell RM7824A. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of Honeywell RM7824A should contain:
- informations concerning technical data of Honeywell RM7824A
- name of the manufacturer and a year of construction of the Honeywell RM7824A item
- rules of operation, control and maintenance of the Honeywell RM7824A item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Honeywell RM7824A alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Honeywell RM7824A, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Honeywell service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Honeywell RM7824A.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Honeywell RM7824A item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    PRODUCT DA T A Copyright © 1995 Honeywell Inc. • All Rights Reserved 7800 SERIES RM7824A Relay Module • First-out annunciation and system dia gnostics are pro vided by a 2-row b y 20-column V acuum Fluorescent Display (VFD) located on the optional Ke yboard Displa y Module. • Five light emitting diodes (LEDs) for sequence information. • Fl[...]

  • Page 2

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 2 SPECIFICA TIONS Model: RM7824A Rela y Module for the 7800 SERIES . Electrical Ratings (See T able 1): V oltage: 24 Vdc (22-28 Vdc). Po w er Dissipation: 10W maximum. Maximum T otal Connected Load: 500 V A. Fusing: T otal Connected Load: 20A maxim um, type FRN or equivalent. ORDERING INFORMA TION When [...]

  • Page 3

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 3 We i ght: RM7824A with Dust Cov er : 1 pound, 12 ounces, unpac ked. IMPORT ANT Flame Detection System av ailable for use with RM7824A. T o select your Plug-in Flame Signal Amplifier and applicable Flame Detector , see T able 2 and Fig. 3. CA UTION To prev ent the control from sequencing on power up , [...]

  • Page 4

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 4 5 (127) 5 (127) M5873 BURNER CONTROL REMOVE ONLY FOR TERMINAL TEST ACCESS. 1 1 6-3/32 (155) Fig. 2. Mounting dimensions of RM7824A Rela y Module and Q7800B Subbase in in. (mm). Dust Cover is part number 221729A. Accessories: Optional: COMBUSTION SYSTEM MANA GER™: Part n umber ZM7850A1001. Communicat[...]

  • Page 5

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 5 PRINCIP AL TECHNICAL FEA TURES The RM7824A provides all customary flame safeguard functions while providing significant adv ancements in the areas of saf ety , annunciation and system diagnostics. Safety Shutdown (Lockout) Occurs If: 1. INITIA TE PERIOD . a. 24 Vdc power errors occurred, see Operation[...]

  • Page 6

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 6 First-out Annunciation repor ts the cause of a saf ety shutdown or identifies the cause of a f ailure to star t or continue the bur ner control sequence with an English te xt and numbered code via the optional K eyboard Displa y Module. It monitors all field input circuits, including the flame signal [...]

  • Page 7

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 7 WIRING 1. a. F or the internal block diagram of the RM7824A, see Fig. 5. b. F or proper subbase wiring, refer to Fig. 6. c. F or proper remote wiring of the Ke yboard Display Module; refer to the Specifications f or the Ke yboard Display Module (65-0090), Communication Interf ace Base Unit (63-2278), [...]

  • Page 8

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 8 7. Make sure loads do not e xceed the ter minal ratings . Ref er to the label on the RM7824A or to the ratings in the specifications; see T able 1. 8. Check the po wer supply circuit. The voltage tolerance m ust match those of the RM7824A. A separate pow er supply circuit ma y be required for the RM78[...]

  • Page 9

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 9 ASSEMBL Y Mounting RM7824A NO TE: F or installation dimensions , see Fig. 1 or 2. Relay Module Mounting 1. Mount the RM7824A v er tically , see Figs. 7 or 8, or mount horizontally with the knife b lade ter minals pointing downward. When mounted on the Q7800A, the RM7824A must be in an electrical enclo[...]

  • Page 10

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 10 Fig. 10. Flame signal amplifier mounting. Installing Flame Detector NO TE: Ta b le 2 and Fig. 11 list the flame detectors availab le f or use with the RM7824A. Make sure the correct combination of amplifier and flame detector(s) is used. Proper flame detector installation is the basis of a safe and r[...]

  • Page 11

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 11 CAPTIVE MOUNTING SCREW DUST COVER RELAY MODULE FLAME AMPLIFIER FLAME CURRENT TEST JACK FLAME SIMULATOR INPUT SEQUENCE STATUS LEDS RESET PUSH- BUTTON M7593 Fig. 13. Sequence status LEDs. Initiate The RM7824A enters the INITIA TE sequence if the Relay Module verifies v oltage fluctuations of outside 22[...]

  • Page 12

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 12 Ta b le 4. Site-Configurable Jumper Options. Jumper Number Description Intact Clipped JR1 Pilot Flame Establishing Period 10 seconds 4 seconds IMPORT ANT After 200 hours of operation, the configuration jumper cannot be changed. If it is changed after 200 hours of operation, the RM7824A loc ks out. Th[...]

  • Page 13

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 13 Ta b le 5. Static Checkout (Continued). Test No. RM7824A Models Test Jumpers Voltmeter Normal Operation If Operation is Abnormal, Check the Item Listed Below 4A ll 3-8 — 1. Ignition spark (if ignition transformer relay is connected to terminal 8). 2. Automatic pilot valve opens (if connected to ter[...]

  • Page 14

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 14 • Hot refractory hold-in test—all installations. • Ignition spark pickup—all installations using Ultra violet Flame Detectors. • Response to other ultraviolet sources—all installations using Ultra violet Flame Detectors. • Flame signal with hot combustion chamber—all installations. ?[...]

  • Page 15

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 15 6. Make sure that the detector is properly sighting the flame. 7. If necessar y , resight or reposition the detector . Initial Lightoff Check for Proved Pilot. P erform this check on all installations that use a pilot. It should immediately f ollow the preliminary inspection. NO TE: Low fuel pressure[...]

  • Page 16

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 16 Initial Lightoff Check for Direct Spark Ignition This check applies f or gas and oil bur ners that do not use a pilot and it should immediately f ollow the preliminary inspection. Refer to the appropriate sample bloc k diagram of field wiring for the ignition transf or mer and fuel v alve(s) hookup .[...]

  • Page 17

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 17 b. As the control attempts to relight the pilot, increase the pilot pressure immediately until the FLAME LED comes on, and then slowly turn it down to obtain a pressure reading just abov e the dropout point or until the flame signal increases to appro ximately 1.25 Vdc. This step must be completed wi[...]

  • Page 18

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 18 IMPORT ANT 1. If the RM7824A fails to shut do wn on any of these tests, tak e correctiv e action (refer to T roubleshooting, RM7824A diagnostics and return to the beginning of all Checkout tests). 2. When all Check out tests hav e been completed, reset all s witches to original states. TROUBLESHOOTIN[...]

  • Page 19

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 19 Ta b le 7. Sequence And Status Hold Information. NO TE: Normal sequences are in bold type , while abnormal sequences are in standard type. Sequence Information INITIATE The LED indicates the burner status, POWER, which is a stabilization period for the RM7824A to check for any fluctuations in dc volt[...]

  • Page 20

    7800 SERIES RM7824A RELA Y MODULE 65-0155—1 20 Helping You Control Your World Home and Building Control Honeywell Limited-Honeywell Limitée 740 Ellesmere Road Scarborough, Ontario M1P 2V9 65-0155—1 Re v . 6-95 G.R. Printed in U .S.A. www .honeywerll.com/bbc Ta b le 8. Hold And Fault Message Summary . Fault Number Annunciation Message • Fault[...]