Crown Bermuda Installation Manual

BlockedVent(“Spill”)Switch-Automaticallyinterruptsburneroperationintheeventthatuegasspillsfromthedraftdiverter

opening.Thisswitchisequippedwitharesetbuttonwhichmustbepressedtorestorenormalburneroperation.Anopenblocked

ventswitchisindicativeofaproblemwiththeventsystem.Iftheblockedventswitchopens,thecauseoftheventingproblem

mustbefoundandcorrectedbyaqualiedgasservicetechnicianbeforetheblockedventswitchisreset.

FlameRoll-outSwitch-Automaticallyinterruptsburneroperationwhenamesorexcessiveheatarepresentinvestibule.The

ameroll-outswitchisasingleusedevicewhichmustbereplacedbyanidenticalswitchinordertorestorenormaloperation.

Anopenameroll-outswitchisusuallyindicativeofapluggedheatexchanger.Thecauseoftheameroll-outmustbefound

andcorrectedbyaqualiedgasservicetechnician,andtheswitchreplacedwithanidenticalone,beforetheboilerisreturnedto

operation.

FIGURE16:WIRINGDIAGRAM,INTERMITTENTIGNITIONANDHYDROLEVELCG-400ALOWWATERCUTOFF

“BURNER”

ROBERTSHAW

7000DERHC

GAS VALVE

(BSI380)

HONEYWELL

VR8204/VR8304

SERIES GAS VALVES

(BSI069 - 346)

VENT DAMPER (NOTE 2)

NOTE 3

LESS VENT

DAMPER

2. VENT DAMPER REQUIRED ON BSI069 - BSI276, OPTIONAL ON BSI311 - BSI380

3. ON BOILERS LESS VENT DAMPER, DAMPER HARNESS NOT USED. RED AND BLUE

LEADS ARE JUMPED TOGETHER USING RED JUMPER WIRE.