Honeywell Q370A Manuel D'instructions

APPLICATION
The Q370A thermocouple has been designed for applications
on various pilot burners to prove the presence of the pilot
flame in gas heating control equipment.
When heated by the pilot flame a small DC voltage is
generated across the "HOT" and "COLD" junction of the
thermocouple, this voltage is used to hold in the power unit in
the pilotstat controlling main gas flow to the heating
equipment.
In the event of pilot flame failure the DC voltage is no longer
generated, the power unit drops out and gas flow to the
burner equipment shuts off.
In most cases additional auxiliary parts have to be ordered for
mounting the thermocouple.
SPECIFICATIONS
Model
Q370A
Electrical data and timing
Output: 22 ... 30
Drop out time: 30 or 45 s (depending on O.S. number)
Maximum operating temperature
Hot junction: 750 E C
Cold junction: 415 E C
Recommended operating temperature
p
50 E C
Hot junction: 650
Accessories (see fig. 1, to be ordered separately)
Adapter set: . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNIVERSAL THERMOCOUPLES
INSTALLATION
IMPORTANT
Insert thermocouple tip into spud of pilot burner.
1
Secure the fixing nut
2
Check that the contact button is clear for good electrical
3
contact and secure.
Run thermocouple lead to the pilotstat power unit, en-
4
suring that it is not bend within 12 mm of either end.
The bending dia should not be less than 50 mm.
Secure the fixing nut
5
SERVICE
When pilotstat power unit will not hold in, check:
If pilot flame has the correct size and envelops 10 ... 13
1
mm of the thermocouple tip.
If power unit connections are clean and tight.
2
If the condition persists after checking the above two points,
replace thermocouple.
English
Deutsch
Nederlands
Italiano
45.900.415--003
Français
INSTRUCTION SHEET
Do not use thread compound
1 1
/ ... / turn beyond finger tight.
4 2
1
/ turn beyond finger tight.
4
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Q370A
Contents
Page 1
Seite 2
Pagina 3
Pagina 3
Page 4
EN1R--9123 9711R1--NE