33
boiler water falls to lowest permissible operating
level. Normal operation resumes when water
returns to normal level.
c
.
Blocked Vent Switch. Automatically interrupts
main burner operation when excessive vent
system blockage occurs. Control is a multiple
use device. If blocked vent switch is activated do
not attempt to place boiler in operation. Correct
source of blockage and reset blocked vent
switch.
d
.
Flame Roll-out Switch. Automatically interrupts
boiler operation when flames or excessive heat
are present in vestibule. Control is single use
device. If flame roll-out switch is activated do
not attempt to place boiler in operation. Correct
source of blockage and replace flame roll-out
switch.
e
.
Igniter/Sensor: senses pilot flame and causes
ignition module to turn off main burner and pilot
burner gas flow should pilot burner flame
extinguish. Five to six minutes after shutdown,
Ignition Module restarts ignition sequence.
For Electronic Ignition Trouble Shooting Guide, see
Page 74.
I.
Steam Boiler with Intermittent Ignition (EI) and Probe
Low Water Cutoff. See Figure 36.
1. Normal Operation
a. Thermostat calls for heat. Thermostat Isolation
Relay is energized, closing contacts.
b. Vent Damper (if used) opens as stated in Vent
Damper Sequence of Operation.
c
.
Ignition Module is energized. Pilot Valve opens
and Igniter is energized to ignite Pilot Burner.
d. Sensor proves presence of pilot flame. Main
Valve(s) opens and ignites Main Burners.
e
.
After Thermostat is satisfied Ignition Module is
de-energized, extinguishing pilot and main
flame. Vent Damper (if used) closes.
2. Safety Shutdown
a
.
Limit: Automatically interrupts main burner
operation when steam pressure exceeds set point.
Maximum allowable pressure is 15 psi. Normal
operation resumes when system pressure falls
below set point.
b
.
Low Water Cutoff (LWCO): Automatically
interrupts main burner operation when surface of
Содержание Independence
Страница 4: ... Figure 1 Dimensional Drawing ...
Страница 19: ...19 Figure 25 Recommended Water Piping for Circulator Zoned Heating System ...
Страница 20: ...20 Figure 25A Recommended Water Piping for Zone Valve Zoned Heating System ...
Страница 29: ...29 Figure 34 Vent Damper Schematic Wiring Diagram Figure 33 Vent Damper Harness to Limit ...
Страница 30: ...30 Figure 35 Wiring Diagrams Steam Continuous Ignition Standing Pilot Probe Low Water Cutoff ...
Страница 32: ...32 Figure 36 Wiring Diagrams Steam Intermittent Ignition EI Probe Low Water Cutoff ...
Страница 34: ...34 Figure 37 Wiring Diagrams Steam Intermittent Ignition HSP Probe Low Water Cutoff ...
Страница 36: ...36 Figure 38 Wiring Diagrams Steam Continuous Ignition Standing Pilot Float Low Water Cutoff ...
Страница 38: ...38 Figure 39 Wiring Diagrams Steam Intermittent Ignition EI Float Low Water Cutoff ...
Страница 40: ...40 Figure 40 Wiring Diagrams Steam Intermittent Ignition HSP Float Low Water Cutoff ...
Страница 42: ...42 Figure 41 Wiring Diagrams Water Continuous Ignition Standing Pilot Intermittent Circulation ...
Страница 44: ...44 Figure 42 Wiring Diagrams Water Intermittent Ignition EI Intermittent Circulation ...
Страница 46: ...46 Figure 43 Wiring Diagrams Water Intermittent Ignition HSP Intermittent Circulation ...
Страница 48: ...48 Figure 44 Wiring Diagrams Water Continuous Ignition Standing Pilot Gravity Circulation ...
Страница 50: ...50 Figure 45 Wiring Diagrams Water Intermittent Ignition EI Gravity Circulation ...
Страница 52: ...52 Figure 46 Wiring Diagrams Water Intermittent Ignition HSP Gravity Circulation ...
Страница 54: ...54 Figure 47 Wiring Diagrams Water Continuous Ignition Standing Pilot Tankless Heater ...
Страница 56: ...56 Figure 48 Wiring Diagrams Water Intermittent Ignition EI Tankless Heater ...
Страница 58: ...58 Figure 49 Wiring Diagrams Water Intermittent Ignition HSP Tankless Heater ...
Страница 61: ...61 Figure 53 Lighting Instructions Continuous Ignition System VR8200 and VR8300 Gas Valves ...
Страница 62: ...62 Figure 54 Lighting Instructions Continuous Ignition System 7000 ERHC Gas Valve ...
Страница 64: ...64 Figure 56 Operating Instructions Intermittent Ignition System EI VR8304 IN12 only Gas Valves ...
Страница 65: ...65 Figure 57 Operating Instructions Intermittent Ignition System HSP SV9501 and SV9601 ...
Страница 76: ...76 ...
Страница 77: ...77 Honeywell Hot Surface to Pilot Trouble Shooting Guide ...
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