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Mechanical design
General
QRB1...A
QRB1...B
Accessories QRB1...
QRB3...
Accessories QRB3...
Building Technologies
HVAC Products
Compact photoresistive flame detector with infused 2-wire thermoplastic cable.
The detector is available with normal sensitivity, high sensitivity, or selected higher
sensitivity, with or without flange / clamp or soft plastic plug (refer to «Type summary»).
Flame detector without soft plastic plug.
This type of detector is fitted with the help of a flange.
A guide groove in the securing flange and a cam on the detector clamp ensure vibra-
tion-free mounting and make certain that the detector is always correctly sited towards
the flame.
Flame detector with soft plastic plug.
For mounting this type of detector on the burner, all that is required is a hole with a
lateral groove (refer to «Dimensions»).
The sealing and securing ribs of the soft plastic plug hold the detector firmly in the hole.
The guide spring guarantees correct alignment of the photoresistive element with the
flame.
•
Small flange, 21 mm spacing, plastic version
•
Large flange, 36 mm spacing, plastic version
•
Clamp, plastic version
The detector is supplied with a metal protective tube having a diameter of 17 mm.
This type of detector is always secured with a flange and a clamp (refer to «Accesso-
ries QRB3...»).
•
Flange, metal version
•
Clamp, metal version
3/7
CC1N7714en
17.07.2006
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