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Honeywell H8908B1010
Honeywell Humidistat Manual Color Taupe
Price:
$44.00
In Stock
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The H8908B Humidistat provides manual low voltage (24 vac) control of humidifiers, in central heating and air conditioning systems. The H8908B has a SPST, snap-acting, dust-proof switch and designed for wall or surface duct mounting.
Color: Taupe
Features
√ SPST, snap-acting, dust-proof switch
√ Positive ON and OFF settings
√ Twelve-inch ribbon of thin nylon ribbon
√ Mounts in duct or on wall surface
Product Specifications |
| Description |
Humidistat |
| Application |
Humidification |
| Type |
Humidity Control |
| Voltage |
24 Vac |
| Electrical Rating |
50 VA at 24 Vac |
| Color |
Taupe |
| Mounting |
Duct mount or wall mount |
| Differential |
4% to 6% RH |
| Temperature Range |
-20° F to +120° F
-29° C to +49° C |
| Operating Range |
10 to 60% RH |
| Dimensions (in.) |
3¾ in. high x 3¼ in. wide x 2 in. deep |
| Dimensions (mm) |
95.3 mm x 82.6 mm x 50.8 mm deep |
Also available in the color White H8908B1002. |
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Manual Versus Automatic Humidistat
The indoor humidity level needs to be set based on the outside temperature. This is to prevent water from running down the windows. The cool air near the windows can not hold the humidity and water will condense on the glass. To prevent this condensation, the indoor humidity level is sacrificed by lowering the humidistat.
A manual humidistat needs to be set back as the season gets colder. An automatic humidistat (such as the Aprilaire 60) adjusts the humidity by using an outside temperature sensor.
The Honeywell automatic humidistat (H1008A) determines the outside temperature based on the furnace duty cycle or with an optional outdoor sensor. Below the Honeywell owners manual discusses this feature they call HumidiCalc.
When The Outdoor
Temperature is |
This Relative Humidity
Should Be Maintained |
+40°F |
45% |
+30° |
40% |
+20° |
35% |
+10° |
30% |
0° |
25% |
-10° |
20% |
-20° |
15% |
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