Kason 1825000008 User Manual
1825 NARROW JAMB HEATED VENTILATOR
WALK-IN
PERFORMANCE TESTED
Comprehensive performance tests show that Kason
1825 pressure relief ports provide better air flow
at lower pressure and greater frost resistance than
competitive ventilators.
Model No. Item Qty/Carton Wgt./Carton
1825000004 Heated Vent, 120 VAC 10 7 lb. (3.2 kg)
1825000008 Unheated Vent, 120 VAC 10 7 lb. (3.2 kg)
QUANTITY SELECTOR ON FOLLOWING PAGE
KASON INDUSTRIES, INC.* 57 AMLAJACK BLVD.*NEWNAN*GEORGIA*30265 1.800.93KASON WWW.KASONIND.COM
© 2013 Kason Industries, Inc.
1825 VENTILATOR QUALITY SELECTOR
Kason 1825, 1830 & 1832 VENTILATOR QUANTITY SELECTOR
Quantity of Ventilators Required (see notes)
Volume of Cooler
or freezer
ft³
(m³)
+10°F (-12.2°C) to +40°F (4.4°C)
Cooler
1825 1830 1832
(2)
+20°F (-28.9°C) to +10°F (12.2°C)
(5)
1825 1830 1832
Freezer
WALK-IN
(2)
(6)
(5)
2,000
3,000
4,000
6,000
8,000
12,000
16,000
20,000
24,000
(57)
(85)
(113)
(170)
(226)
(340)
(453)
(566)
(679)
1
1
1
1
2
2
3
1
1
1
2
2
3
4
1
1
1
1
1
1
2
2
2
1
1
2
3
(5)
3
(5)
4
(5)
4
1
2
3
4
see note 4
see note 5use 1832
Notes:
(1) The table above should be used as a general guideline only. Kason does not guarantee these
numbers, as many factors beyond those assumed can affect the amount of ventillation required in a
refrigerated space. Some of these factors include, but are not limited to: the number of doors in the
enclosure, air-tightness of the enclosure, refrigeration load (how quickly the temperature drops),
strength of panel construction, etc.
(2) Air flow requirement is based on the following assumed temperature change rates: Freezer 30°F
(16.8°C) Change / 20 min (1.5° F/min), Cooler 10°F (5.6oC) Change / 20 min (0.5o F/min).
(3) Vent q
pressure differential for given temperature change rate: 1825 = 13 ft3/min @ .6inH
1830 = 5 ft3/min @ .8inH
uantities are calculated based on actual measured flow rates at an assumed allowable
O pressure,
O pressure, 1832 = 14 ft3/min @ .6inH2O pressure.
2
2
1
1
1
2
2
3
4
(4) For box temperature less than -20F and/or when humid conditions exist outside box, add one
1830 for each 2000 cf above 6000 - or - use 1832LT.
(5) Model 1832LT is recommended over the 1832 for box temperatures between -20F and -40F. Use
model 1845 for boxes this size and larger if box temperature is -20F or greater. Use 1832 or 1832LT
in place of 1825 for larger freezers.
(6) Minimum use temperatures: 1825 -20F, 1830 & 1832 -30
(7) Opening pressures: 1825 opens at the lowest pressure (0.1 inch H
and 1830 opens at the highest pressure (0.7 inch H
KASON INDUSTRIES, INC.* 57 AMLAJACK BLVD.*NEWNAN*GEORGIA*30265 1.800.93KASON WWW.KASONIND.COM
2
O).
F, 1832LT -40F.
O), 1832 at 0.3 inch H2O,
2
© 2013 Kason Industries, Inc.
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