45
17
12
02
01
12
27
07
16
03
26
25
24
20
04
30
10
28
31
12
22
21
06
34
33
05
11
09
12
32
11
19
13
14
12
35
15
23
18
08
22
29
23
28
HOPPER ASSEMBLY
14
Faster Startup in Cold Weather or For High Temperature Cooking
Even though the heat up mode is automatically selected, the cook can bene
fi
t from starting the pit in
“H2” when the outside temperature is below 50° F; this will provide a more aggressive start over the
fi
rst
8 minutes. Secondly, if the target temperature is greater than 350° F, starting the pit in “H3” will get the
pit to temperature much quicker.
Examples
Ambient temperature of 70° F and a set point of 350° F:
All of the pre-grill steps have been taken; turn the power switch to the “on” position and press start. The
display will alternate between the heat up (mode lines) and the set temperature (set point). The display
will continue in this manner until the cooking chamber temperature exceeds 110° F at which point the
display will alternate between the mode lines and the actual cooker temperature. In about 3 minutes
there will be evidence of ignition.
In the scenario listed above it is likely that the program will stay in “H1” through the startup cycle. In this
case the “mode lines” will come out of heat up and into maintenance before the set point is reached. This
does not indicate that the program is no longer working to achieve set point. It is simply doing it in a less
aggressive way.
When “H2” or “H3” is selected, it is common for the pit to overshoot the set temperature. How much
overshoot depends on the startup (initial pellet drops and ignition, and ambient conditions including wind
and temperature). The program will make the adjustments and begin bringing the temperature down. It is
also common for the grill to undershoot the set point and then work its way into the target temperature
range. We call this process normalizing, which is the time it takes to raise the cooker’s body temperature
to match the internal temperature.
NOTE:
When the grill overshoots or undershoots some cooks want to jump in and begin making
temperature adjustments. Do not make adjustments. When you do, the program will begin making
adjustments to the new set point rather than
fi
nish settling into the intended temperature range. With
experience comes the con
fi
dence of knowing how the cooker operates.
Also remember, no matter how small a pellet is, it is still wood, so understand that the controller is
managing a wood
fi
re which does not have the precision of gas or electric.
One last point on the subject of temperature management, if you have a grate (pit) probe in place,
especially during heat up process, the grate probe will read higher than the display until the temperature
of the cooker body and the internal temperatures stabilize. The reason for this is that the temperature
displayed is a 90 second rolling average and will lag behind actual until the set point is reached.
Summary of Contents for YS 640
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