Honeywell RM7824A User Manual

7800 SERIES RM7824A RELAY MODULE

65-0155—1

8

7. Make sure loads do not exceed the terminal ratings.

Refer to the label on the RM7824A or to the ratings in
the specifications; see Table 1.

8. Check the power supply circuit. The voltage tolerance

must match those of the RM7824A. A separate power
supply circuit may be required for the RM7824A with
the required disconnect means and overload protection
added.

9. Check all wiring circuits and complete the Static

Checkout section before installing the RM7824A on the
subbase; see Table 5.

10. Install all electrical connectors.
11. Restore power to the panel.

M5820A

G

L2

3

5

6

7

8

9

10

F

13

14

15

16

17

18

19

20

21

22

12

MASTER
SWITCH

IGNITION

MAIN FUEL
VALVE(S)

BURNER 
CONTROLLER/LIMITS

24 VDC ALARM

INTERMITTENT 
PILOT/IGNITION

C7024E,F 
ULTRAVIOLET
FLAME DETECTOR

24 VDC POWER SUPPLY.  PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS.

FOR A CONTINUOUS OR STANDING PILOT, INSTALL AN EXTERNAL RELAY TO SWITCH THE F LEAD.  THE 
RELAY MUST HAVE GOLD-CLAD OR GOLD-FLASH CONTACTS AND A 120 VAC COIL.  POWER THE RELAY
COIL FROM THE Q7800 SUBBASE TERMINAL 8.  CONNECT THE RELAY CONTACTS BETWEEN THE F LEAD OF 
THE DETECTOR AND THE F TERMINAL OF THE Q7800 SUBBASE.  A 24 VDC RELAY IS ACCEPTABLE TO 
USE IN THIS TYPE OF APPLICATION.  USE THE N.O. PILOT DUTY CONTACTS.

+

–

1

BLUE

YELLOW

L2

WHITE

WHITE

BLACK

RED

3

L2

1

Q7800

2

2

3

3

4

24 VDC

C7015 INFRARED
(LEAD SULFIDE)
DETECTOR

OR

BROWN

WHITE