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Super Hot SG Series User Manual

Super Hot SG Series
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MG & SG Series Boilers – Installation and Service Manual
10
2.8 AUTOMATIC VENT DAMPER
This boiler is supplied with an automatic vent damper. The following instructions must be observed:
The automatic vent damper should be installed at the top of the factory supplied draft hood (Figure 1 -
Alternate 3). No modifications to the automatic vent damper are permitted.
The venting system must be arranged so that only the boiler is served by the automatic vent damper
with which it was supplied.
Connect the wiring harness from the boiler to the automatic vent damper as indicated on the supplied
wiring drawings.
The automatic vent damper position indicator should be clearly visible after installation.
A minimum clearance of not less than 6 inches (153 mm) must be maintained between the automatic
vent damper device and combustible construction. Provision must be made for service access to the
automatic vent damper.
The automatic vent damper must be in the open position when the boiler's main burner is operating.
For orientation other than vertical, refer to automatic vent damper installation instructions
2.9 BLOCKED VENT AND FLAME ROLL-OUT SAFETY SWITCHES
All boilers with an input of 300,000 Btu/h and under are equipped with blocked vent and flame roll out
safety switches. The blocked vent safety switch is installed in the clip provided on the draft hood (Figure
1 - Alternate 1) or is mounted with screws (Figure 1 - Alternate 2). The blocked vent safety switch is pre-
wired at the factory either directly to the boiler controls (Figure 1 - Alternate 1 & 2), or through a wiring
harness for a boiler with an automatic vent damper (Figure 1- Alternate 3). If the vent becomes blocked a
boiler shut down will occur. Ensure that the vent is free of obstructions.
The flame roll out safety switch will cause a boiler shutdown if the heat exchanger becomes blocked with
soot or corrosion.
WARNING
Shut down of the boiler by either the “Blocked Vent” or the “Flame Roll-out” safety switch is an
indication that carbon monoxide may be improperly venting into the premises and the boiler
must be serviced by a qualified person who is capable of determining the cause of the shut
down and can take corrective action. Carbon monoxide is a lethal, colorless and odorless gas.
FIGURE 1 - MOUNTING LOCATION OF BLOCKED VENT SAFETY SWITCH AND WIRE ROUTING
ALTERNATE 1 ALTERNATE 2
ALTERNATE 3

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Super Hot SG Series Specifications

General IconGeneral
BrandSuper Hot
ModelSG Series
CategoryBoiler
LanguageEnglish

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