38
1. Standing Pilot (24) Sequence of Operation
a. Normal Operation
i
.
Thermostat or operating control calls for
heat. Vent Damper (if used) opens.
ii
. Gas valves are energized allowing main gas
flow and ignition of main burners.
iii
. Call or heat ends. Gas valves are de-
energized, extinguishing main flame. Vent
Damper (if used) closes.
b. Safety Shutdown
i
.
Limit: Automatically interrupts main burner
operation when water temperature exceeds
set point. Maximum allowable temperature is
250°F. Circulator continues to operate with
call for heat, Vent Damper (if used) closes.
Normal operation resumes when water
temperature falls below set point.
ii
. Blocked Vent Switch: Automatically
interrupts main burner operation when
excessive flue gas spillage occurs. Circulator
continues to operate and Vent Damper (if
used) remains open with call for heat. If
blocked vent switch is activated do not
attempt to place boiler in operation. Correct
cause of spillage and reset blocked vent
switch.
iii
. Flame Roll-out Switch: Automatically
interrupts main burner operation when
flames or excessive heat are present in
vestibule. Circulator continues to operate
and Vent Damper (if used) remains open with
call for heat. Control is single use device. If
flame roll-out switch is activated, do not
attempt to place boiler in operation. Correct
cause of spillage and replace flame roll-out
switch.
iv
. Thermocouple: Senses pilot flame and
causes gas valves to turn off main burner
and pilot burner gas flow should pilot burner
flame extinguish. Circulator continues to
operate and Vent Damper (if used) remains
open with call for heat.
Table 10: Sequence of Operation and Wiring Diagrams
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Summary of Contents for 805B
Page 13: ...13 Figure 8 Jacket Assembly...
Page 14: ...14 Figure 9 EP OP Control Installation...
Page 17: ...17 Figure 10 Schematic Gas Piping 24V Standing Pilot 806B 807B...
Page 18: ...18 Figure 11 Main Gas Piping Intermittent Ignition EI...
Page 19: ...19 Figure 12 Schematic Pilot Piping Honeywell EI USA...
Page 20: ...20 Figure 13 Schematic Pilot Piping Honeywell EI Canada Natural Gas 805B 810B LP Gas 806B 807B...
Page 21: ...21 Figure 14 Schematic Pilot Piping Johnson EI USA...
Page 22: ...22 Figure 15 Schematic Pilot Piping Johnson EI Canada Natural Gas 805B 810B LP Gas 806B 807B...
Page 23: ...23 Figure 16 Schematic Gas Piping OP Control System 806B 810B...
Page 24: ...24 Figure 17 Schematic Gas Piping OP CSD 1 Control System 808B 810B...
Page 25: ...25 Figure 18 Schematic Gas Piping EP Control System Natural Gas Only 806B 810B...
Page 26: ...26 Figure 19 Schematic Gas Piping EP CSD 1 Control System 808B 810B...
Page 30: ...30 Figure 25 Recommended Boiler Piping for Circulator Zoned Heating Systems...
Page 39: ...39 Figure 31 Wiring Diagram Standing Pilot 24 USA and Canada Continuous Circulation...
Page 40: ...40 Figure 32 Wiring Diagram Standing Pilot 24V USA and Canada Intermittent Circulation...
Page 42: ...42 Figure 33 Wiring Diagram OP OP CSD 1 Ignition System Continuous Circulation...
Page 43: ...43 Figure 34 Wiring Diagram OP OP CSD 1 Ignition System Intermittent Circulation...
Page 45: ...45 Figure 35 Wiring Diagram Honeywell EI USA Continuous Circulation...
Page 46: ...46 Figure 36 Wiring Diagram Honeywell EI USA Intermittent Circulation...
Page 47: ...47 Figure 37 Wiring Diagram Honeywell EI Canada Continuous Circulation...
Page 48: ...48 Figure 38 Wiring Diagram Honeywell EI Canada Intermittent Circulation...
Page 50: ...50 Figure 39 Wiring Diagram Johnson EI USA Continuous Circulation...
Page 51: ...51 Figure 40 Wiring Diagram Johnson EI USA Intermittent Circulation...
Page 52: ...52 Figure 41 Wiring diagram Johnson EI Canada Continuous Circulation...
Page 53: ...53 Figure 42 Wiring Diagram Johnson EI Canada Intermittent Circulation...
Page 55: ...55 Figure 43 Wiring Diagram EP EP CSD 1 Ignition System USA Continuous Circulation...
Page 56: ...56 Figure 44 Wiring Diagram EP EP CSD 1 Ignition System USA Intermittent Circulation...
Page 60: ...60 Figure 49 Lighting Instructions 24V Standing Pilot...
Page 61: ...61 Figure 50 Operating Instructions EI...
Page 62: ...62 Figure 51 Lighting Instructions OP...
Page 63: ...63 Figure 52 Operating Instructions EP...
Page 71: ...71 Honeywell EI Trouble Shooting Guide...
Page 72: ...72 Johnson EI Trouble Shooting Guide...
Page 73: ...73...
Page 74: ...74 SERVICE RECORD DATE SERVICE PERFORMED...
Page 94: ...94...
Page 97: ...97...