QHT Direct Vent DVF-4 Rigid, Руководство по установке

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11
5. Installation of Post Purge Safety Limit
The electricity to the boiler shall come from a dedicated breaker in the electric service
box. A service switch should be mounted on the side of the boiler so the burner technician can
service the burner and controls. The electrical wiring should be routed so as not to interfere
with normal servicing of the boiler. Wiring done in the field between devices not attached to
boiler shall conform with the temperature limitations for type T wire (63F/35C) or other specified
wire as applicable when installed in accordance to manufacturer's instructions and wiring
diagrams.
If an external electrical source is utilized, the boiler, when installed, must be electrically
bonded to ground in accordance with the requirements of the authority having jurisdiction
or , in the absence of such requirements, with the National Electrical Code, ANSI/NFPA 70 or
Canadian Electrical Code Part I,CSA C22.1, Electrical Code.
The Post Purge Immersion Limit is installed to ensure that if the boiler exceeds 220° F, all
power is disconnected to the burner. The Limit should be mounted on the supply side of the
boiler into the supplied tee. To wire the post purge Limit please refer to the schematics for your
specific burner on the following pages.
Note:
Use one of these
3/4 tappings for the
immersion sensor.
Use supplied
3/4”x 1/2” bushing.
Note:
Install immersion
sensor in the
supplied tee.
Supplied high limit
immersion sensor MUST
be installed on all direct
vent applications
See wiring diagrams
on pg. 19-20 for correct
wiring.
Saint Roch Universal Boiler
Biasi B10 Boiler