Table 2-Flame Detection Systems - Honeywell 7800 Series Manual

RM7838B
SPECIFICATIONS
Terminal No.
F(11)
12
13
14
15
16
17
18
19
20
21
22
1
The RM7838B must have an earth ground providing a connection between the subbase and the control panel or the boiler. The
earth ground wire must be capable of conducting the current to blow the 20A fuse (or breaker) in event of an internal short
circuit. The RM7838B needs a low impedance ground connection to the equipment frame which, in turn needs a low
impedance connection to earth ground. For a ground path to be low impedance at RF frequencies, the connection must be
made by minimum length conductors having maximum surface areas. Wide straps or brackets are preferred rather than
leadwires. Be careful to ensure that mechanically tightened joints along the ground path, such as pipe or conduit threads or
surfaces held together with fasteners, are free of nonconductive coatings and are protected against mating surface corrosion.
2
2000 VA maximum connected load to RM7838B Assembly.
3
Can also be 120 Vac, 1A pilot duty.
4
Can also be 65 VA pilot duty with motorized valve, 1150 VA inrush, 460 VA open, 250 VA hold.
5
Operating frequency chosen by RM7838B selection.
Plug-in Flame Signal Amplifiers
Type Color
Rectification Green
65-0120—1
TABLE 1—TERMINAL RATINGS (Continued).
Description
Flame Sensor
Firing Rate High Fire
Firing Rate Common
Firing Rate Low Fire
Firing Rate Modulate
Pilot Valve Hold Input
Manual Open Switch
Low Fire Switch
High Fire Switch
Preignition Interlock
Start Switch Input
Shutter
TABLE 2—FLAME DETECTION SYSTEMS (FIGS. 4, 5, 6).
Self-
Checking Model
No R7847A .8 or 3 sec
No R7847A .8 or 3 sec
No R7847A 3 sec
d
Dynamic R7847B .8 or 3 sec
AMPLI-
CHECK™
d
Dynamic R7847B .8 or 3 sec
AMPLI-
CHECK™
d
Dynamic R7847B 3 sec
AMPLI-
CHECK™
60 to 220 Vac, current limited.
120 Vac, 75 VA pilot duty.
120 Vac, 75 VA pilot duty.
120 Vac, 75 VA pilot duty.
120 Vac, 75 VA pilot duty.
120 Vac, 1 mA.
120 Vac, 1 mA.
120 Vac, 1 mA.
120 Vac, 1 mA.
120 Vac, 1 mA.
120 Vac, 1A pilot duty.
120 Vac, 0.5 A.
Applicable Flame Detectors
Flame
Failure
Response
Time Fuel
Gas Rectifying
Flame Rod
Holders
Oil Rectifying
Photocell
Gas, oil, Ultraviolet
coal (PurplePeeper)
Gas Rectifying
Flame Rod
Holders
Oil Rectifying
Photocell
Gas, oil, Ultraviolet
coal (Purple Peeper)
4
Ratings
Type Models
C7004, C7007, C7011.
CompleteAssemblies:
a
C7008, C7009, Q179.
C7003, C7010, C7013,
b
C7014.
c
C7012A,C.
C7004, C7007, C7011.
Complete Assemblies:
d
C7008, C7009, Q179.
C7003, C7010, C7013,
b
C7014.
c
C7012A,C.
(Continued)