Honeywell 2RM7800L1087 Installation Instructions Manual page 5

Ground Type
Earth ground (subbase and relay
module).
Signal ground (KDM, Data ControlBus
Module™, Communications Interface
ControlBus™ Module).
Terminal No.
G
Flame Sensor Ground
Earth G Earth Ground
L2(N) Line Voltage Common
3 Alarm
4
Line Voltage Supply (L1)
5 Burner Motor
6 Burner Controller and Limits Demand (NOT Valve Proving)
7 Lockout/Running Interlock 8A run, 43A inrush
8 Pilot Valve/Ignition
9 Main Fuel Valve
10 Ignition
F(11) Flame Sensor
12 Firing Rate High Fire
13 Firing Rate Common
14 Firing Rate Low Fire
15 Firing Rate Modulate
16 Valve Proving Switch
17 Demand — Valve Proving
18 Low Fire Switch Input
19 High Fire Switch Input (7800/40L only)
20 Pre-Ignition Interlock Input
21 Interrupted/Intermittent Pilot Valve/First Stage Oil Valve
or MV2
22 Shutter
a
The relay module must have an earth ground providing a connection between the subbase and the control panel or the
equipment. The earth ground wire must be capable of conducting the current to blow the 15A fuse (or breaker) in event of an
internal short circuit. The relay module requires a low impedance ground connection to the equipment frame, which, in turn,
requires a low impedance connection to earth ground.
b
2000 VA maximum connected load to relay module assembly.
c
See Tables 4 and 5.
d
220/240 Vac to 120 Vac, 10 VA (minimum) stepdown transformer (not provided) must be used to drive the shutter.
RM7800L1087; RM7840G1022,L1075; EC7840L1014 RELAY MODULES WITH VALVE PROVING
Table 2. Recommended Grounding Practices.
1. Use to provide a connection between the subbase and the control panel of the
equipment. Earth ground must be capable of conducting enough current to blow the
15A fuse (or breaker) in the event of an internal short circuit.
2. Use wide straps or brackets to provide minimum length, maximum surface area
ground conductors. If a leadwire must be used, use 14 AWG copper wire.
3. Make sure that mechanically tightened joints along the ground path are free of
nonconductive coatings and protected against corrosion on mating surfaces.
Use the shield of the signal wire to ground the device to the signal ground terminals
[3(c)] of each device. Connect the shield at both ends of the chain to earth ground.
Table 3. Terminal Ratings.
Description
a
b
Recommended Practice
120 Vac
—
—
—
1A pilot duty
120 Vac (+10%/-15%),
50 or 60 Hz (±10%)
9.8 AFL, 58.8 ALR (inrush)
1 mA
8A run, 43A inrush
c
c
c
60 to 220 Vac,
current limited
75 VA pilot duty
75 VA pilot duty
75 VA pilot duty
75 VA pilot duty
1 mA
1 mA
1 mA
1 mA
1 mA
c
0.5A
5
Ratings
220/230/240 Vac
—
—
—
220-240 Vac (+10%/-15%),
50 or 60 Hz (±10%)
4A at PF = 0.5, 20A Inrush
1 mA
—
4A at PF = 0.5, 20A Inrush
4A at PF = 0.5, 20A Inrush
2A at PF = 0.2
60 to 220 Vac,
current limited
0.5A at PF = 0.5
0.5A at PF = 0.5
0.5A at PF = 0.5
0.5A at PF = 0.5
1 mA
1 mA
1 mA
1 mA
1 mA
4A at PF = 0.5, 20A Inrush
d
66-1162—2