Honeywell 2RM7800L1087 Installation Instructions Manual page 4

RM7800L1087; RM7840G1022,L1075; EC7840L1014 RELAY MODULES WITH VALVE PROVING
Fig. 2. Internal block diagram of the RM7800L/40L, EC7840L (See Figs. 3, 4, 6 or 7 for individual detailed wiring
Application
Line voltage terminals
Keyboard Display Module (KDM)
Data ControlBus Module™
Remote Reset Module
Communications Interface ControlBus™
Module
13 Vdc full-wave rectified transformer
power input.
66-1162—2
L1 (HOT)
4
DEMAND
CONTROLLER
LIMITS
6
17
AIR FLOW
SWITCH
VALVE PROVING SWITCH
16
20
PRE-IGNITION INTERLOCK
F
FLAME
DETECTOR
G
INTERNAL RELAY OPTO FEEDBACK
FIELD WIRING
INTERNAL WIRING
1 15 SECOND INTERRUPTED OR MV2 IF VALVE PROVING DEMAND (T17) USED.
2 RM7800L/RM7840L 120 VAC 50/60 HZ
EC7840L 220-240 VAC 50/60 HZ
Table 1. Recommended Wire Sizes and Part Numbers.
Recommended Wire Size
14, 16 or 18 AWG copper conductor, 600
volt insulation, moisture-resistant wire.
22 AWG two-wire twisted pair with ground,
or five wire.
22 AWG two-wire twisted pair with ground,
or five wire.
22 AWG two-wire twisted pair, insulated for
low voltage.
22 AWG two-wire twisted pair with ground. Belden 8723 shielded cable or
18 AWG wire insulated for voltages and
temperatures for given application.
2
L2
INTERNAL
L2
ELECTRONICS
3
3K
5
6K
LOW FIRE
SWITCH
HIGH FIRE
DEMAND (VALVE
SWITCH
PROVING)
7
8
4K
1K
9
2K
10
2K
5K
21
7K
PLUG IN FLAME
22
AMPLIFIER
HIGH FIRE
12
COMMON
13
MODULATE
15
LOW FIRE
14
instructions).
4
ALARM
BLOWER
18
19
PILOT
VALVE
MAIN
VALVE 1
IGNITION
1
DETECTOR
SHUTTER
M24162
Recommended Part Number(s)
TTW60C, THW75C, THHN90C.
Belden 8723 shielded cable or
equivalent.
Belden 8723 shielded cable or
equivalent.
—
equivalent.
TTW60C, THW75C, THHN90C.