Rational SCC Series

132
Gas
Edition 10-2008a
Flue gas analysis for Hot Air at MAX rpm and cross checking CO
2
at MIN rpm
1) Switch on unit
2) Open front panel
3) Set DIP switch 1 on PCB to „ON“ position
4) Press Service-key
5) Select “Function Test“
6) Select at „FunctionTest“ the position 15 „Gas Hot Air Burner TOP“
7) Press key and select „Max“ rpm, if it‘s not already selected
8) Activate the burner with the „Start“ key.
Note: Start key is used as a switch and will automatically deactivate
after 4 minutes.
Display 4 indicates the desired CO
2
value, e.g. 9,2%,  ame cur
rent, i.e. 5,5 A and the corresponding rpm of the blower motor.
9) Place  ue gas testing nozzle in correct  ue outlet;
10) Adjust CO
2
to given value by turning CO
2
screw on gas valve.
You also can  nd that value on table „Values for burner adjustments“
If CO
2
value is too low => turn CO
2
screw anti clockwise (+ direction),
If CO
2
value is too high => turn CO
2
screw  rst 1 turns clockwise (- direc-
tion), and than slowly anti clockwise (+ direction) until you get the indicated
CO
2
value. (Screw adjustment tolerance).
CO value must be below 300 ppm!
11) Press „Stop“ key. Blower will stop.
12) Press key and select „Min“ speed.
13) Activate the burner with the „Start“ key. Note: Start key is used as a
switch and will automatically deactivate after 4 minutes
Check CO
2
values. Measured values shall correspond with the table
„Values for burner adjustment“ in this manual. Should CO2 value be out
of the allowable range change gas valve.
Press „Stop“ key. Blower will stop.
14) To exit program set DIP switch 1 to „OFF“;
1
2
3
4
on
15 - Function Test
Gas Hot Air Blower Top
Max
CO2 FC rpm
xxx% 5,5A xxx
15 - Function Test
Gas Hot Air Blower Top
Min
CO2 FC rpm
xxx% 5,5A xxx
1
2
3
4
on
Start
Start
Before starting ue gas analysis make sure your ue gas
analyser is set to the correct connected gas type!