Wood-mizer KD250 Series - Technical Specifications; Unit Performance Data; Drying Lumber; Loading and Airflow Management

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These guidelines should be followed carefully.
Placing Stickers and Loading Lumber
• Stickers should all be at least ¾” thick and all
sticks in any load must be the same thickness.
• Thick lumber (10/4“ and thicker) should be
dried using double stickers.
• End stickers should be as close to the ends of
the boards as possible.
• The sticker spacing should be approximately
18”. This spacing can be reduced to 12” if excessive
warping, cupping, and bowing are a problem.
• Keep stickers in a vertical line and always support
the load under each sticker.
• If you have some wide boards, or other pieces
that you want to keep as straight as possible,
pile them on the bottom as the weight of the
lumber above will constrain the wide boards
and give the best result.
• If a less than full load is anticipated, it is better
to reduce the depth rather than the height or
width. This will obviously leave the stickers
“hanging out”, but will result in better drying.
Ensuring Proper Airow
• When the lumber is fully loaded, the baffles
should be lowered to the top of the lumber and
the side baffles should be carefully positioned.
Technical Specications
If your control box is more than 50 ft from a
ground rod, your moisture probes will read
incorrectly. A ground rod should be
installed at the disconnect or electrical panel.
Control Wiring
Power supply
230Vac 50/60Hz ± 20%
or
120Vac 50/60Hz ± 20%
Absorption 15W
Working Temperature 0/+40˚C (32/104˚F)
Temperature Measuring
Range
0-99˚C (32/210˚F)
Temperature Measuring
Resolution
0.1˚
Temperature Probe NTC Thermistor
Timber Moisture
Measuring Range
8% - 90% at 25˚C
Number of Probes 4
Relay Outputs
4 (Heating, Spray, Vent,
Compressor)
Relay Contact Ratings 250Vc -5A (Resistive Load)
Internal Fuse Ratings 5 x 20mm5A Fast
Instrument Size (LxHxW) 144 x 72 x 154mm
12
34
NEUT RAL N.C. COM MON SPRAYE RS HEATER ON HEATER OFF VENT ON VENT OFF COM PRESS. N.C.
RS485
GND Rx/Tx - Rx/Tx +
PHASE
11 10 9 8 7 6 65 54 43 332 221 11
WD
CN1
B
A
C n2CN3
E
A
R
T
H
CN2
Pin RS485 (Optional)
1 Rx/Tx +
2 Rx/Tx -
3 GND
12
34
NEUTRA L N.C. COM MON SPRAYE RS HEATER ON HEATER OFF VEN T ON VEN T OFF COM PRESS. N.C.
RS485
GND Rx/Tx - Rx/Tx +
PHASE
11 10 9 8 7 6 65 54 43 332 221 11
WD
CN1
B
A
C n2CN3
E
A
R
T
H
CN3
Pin Function
1 N/A
2 Compressor
3 Vents Off
4 Vents On
5 Heater Off
6 Heater On
7 Spray System (Upgrade)
8 Relay Common
9 N/A
10 Phase
11 Neutral (Supply)
CN1
Pin
Function
A B
1 1 Probe 1
2 2 Probe 2
3 3 Probe 3
4 4 Probe 4
5 5
Wet Bulb Temp
Probe
6 5
Dry Bulb Temp
Probe
6 Earth
12
34
NEUTRA L N.C. COM MON SPRAYE RS HEATER ON HEATER OFF VEN T ON VEN T OFF COM PRESS. N.C.
RS485
GND Rx/Tx - Rx/Tx +
PHASE
11 10 9 8 7 6 65 54 43 332 221 11
WD
CN1
B
A
C n2CN3
E
A
R
T
H
!
240Vac
Drying Lumber