Honeywell Dehumidifier H1008- Manuals

Rev 2.0 63-7048 1998 Honeywell Inc. Page 5 of 22 Figure 3 illustrates why condensation occurs: Figure 3 – Temperature Profile of Double Pane Window Figure 3 shows the temperature profile through a typical double pane window. If it is 70 F inside and 0 F outside, depending on the insulating value of ...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 7 of 22 The AutoTrac control does not have the ability to provide true dewpoint control. This may result in overhumidification at times when the temperature is greater than normalconditions and underhumidification if the temperature is less than normal condit...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 8 of 22 H1008 Automatic Humidity Control with HumidiCalc+ - The Technical Approach We found that there is more than a casual relationship between furnace run time andoutdoor temperature. In fact, in a single stage heating system, in steady state, thepercentag...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 9 of 22 oversize). In this case the furnace will only be running 50% of the time at the ASHRAEdesign temperature of –16 F. Next, we looked at the insulation values of windows, and found that naturally, there is arelationship between the temperature of the ins...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 10 of 22 adjusting a single input value, we can achieve a control point that satisfied every one ofthe thousands of combinations of the variables. Voila . By adjusting a single knob setting we can provide a solution for the entire range of five input variable...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 11 of 22 Nobody has more knowledge about heating loads than Honeywell, the world leader intemperature control. More furnaces are controlled by Honeywell thermostats than anyother, so nobody understands the science of temperature control better than we do. In ...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 14 of 22 -20 -10 0 10 20 30 40 50 60 70 80 00 :0 0: 00 01 :0 0: 00 02 :0 0: 00 03 :0 0: 00 04 :0 0: 00 05 :0 0: 00 06 :0 0: 00 0 7 :00 :0 0. 0 08 :0 0: 00 09 :0 0: 00 10 :0 0: 00 11 :0 0: 00 12 :0 0: 00 13 :0 0: 00 1 4 :00 :0 0. 0 15 :0 0: 00 16 :0 0: 00 1 7 ...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 15 of 22 Making the Best of a Duct Mounted Humidity Control One of the things we learned early on in this development was that a return air duct is notthe best place to mount a humidistat that controls only by relative humidity. There aretwo major factors tha...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 16 of 22 -20 -10 0 10 20 30 40 50 60 70 80 90 100 08 :0 0 :00 08 :3 0 :00 .0 09 :0 0 :00 09 :3 0 :00 10 :0 0 :00 10 :3 0 :00 11 :0 0 :00 11 :3 0 :00 12 :0 0 :00 12 :3 0 :00 .0 13 :0 0 :00 13 :3 0 :00 14 :0 0 :00 .0 0 5 10 15 20 25 30 35 40 Dewpoint Furnace Cy...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 17 of 22 2. Humidity Control Located Too Close to Bypass DuctA second problem that can occur in many installations is a result of the humiditycontrol being located too close to the bypass duct. We always recommendmounting the humidity control as far upstream ...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 18 of 22 dewpoint increases slightly in response to the humidifier cycles. During thisperiod the relative humidity sensed in the duct is as low as 13 %. Because theH1008 controls based on dewpoint, it is able to cycle intermittently during thetemperature reco...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 19 of 22 While the humidifier was on during the entire recovery period starting at 4:15a.m., the sensed RH ranged from 20 to 30 %. The continuous operation of thehumidifier caused the dewpoint in the house to exceed the window temperaturefor over two hours. C...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 21 of 22 Logic to determine if the fan is running is determined from the equipment inputsso a current sensing relay is never required, providing additional savings to thecontractor on jobs that would normally require one. 4. Automatic Configuration and Diagno...

Rev 2.0 63-7048 1998 Honeywell Inc. Page 22 of 22 Direct Comparison Chart – Honeywell H1008 Automatic Humidity Control with HumidiCalc+ Software vs. AutoTrac Honeywell H1008 AutoTrac Installation Outdoor Sensor Not required for single stage furnaces. Recommended forheat pumps and multi-stage furnace...