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Honeywell H1008A Product Data

Automatic humidity controls
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See also: Instruction and Installation Manual

APPLICATION

The H1008A,D Automatic Humidity Controls with
HumidiCalc+™ Software are duct mounted and provide
automatic, low voltage, electronic control of by-pass flow-
through, powered flow-through, steam and drum humidifiers
in central heating systems. The H1008D also controls heat/
energy recovery units and dehumidifiers. The H1008A,D are
designed to automatically adjust the humidity level based on
indoor temperature and humidity, inferred or measured
outdoor temperature and the setting of the frost factor dial.
The frost factor setting is used to maintain a comfortable
humidity level in the home while reducing moisture
condensation on inside windows. The HumidiCalc+™
Software infers the outdoor temperature by monitoring the
equipment cycles and eliminates the need for an outdoor
temperature sensor when used on single-stage gas or oil
furnaces. With the use of the C7089H Outdoor Temperature
Sensor (purchased separately), the H1008A,D also provide
automatic humidity control in heat pump and multi-stage
systems.
® U.S. Registered Trademark
Copyright © 1999 Honeywell Inc. • All Rights Reserved
Automatic Humidity Controls

FEATURES

• The H1008A,D provides automatic control for by-pass
flow-through, powered flow-through, steam and drum
humidifiers in central heating systems.
• The H1008D also provides automatic control for
dehumidification using heat/energy recovery
ventilators or dehumidifiers.
• Patented Honeywell HumidiCalc+™ Software
eliminates the need for an outdoor sensor on the most
common single-stage, gas or oil forced air equipment.
• Combination temperature and humidity sensor
accurately determines the dewpoint at the control
location.
• Equipment connection can eliminate the need for a
current sensing relay on the blower.
• Simple duct mount requires only a 3/4 in. (19 mm)
circular duct opening for sensors.
• With the use of the C7089H Outdoor Temperature
Sensor, the H1008A,D also provides automatic
humidity control in heat pump and multi-stage
systems.
• Automatically adjusts humidity level based on the
frost factor set by the homeowner.
• Frost factor input allows for variances in furnace
oversizing, window insulation and average daily
climate temperature.
• System status light indicates normal operation, test
mode and fault indication.
Application ........................................................................... 1
Features .............................................................................. 1
Specifications ...................................................................... 2
Ordering Information ........................................................... 2
Installation ........................................................................... 2
Wiring .................................................................................. 4
Settings ............................................................................... 7
System Status ..................................................................... 7
Checkout ............................................................................. 8
H1008A,D
PRODUCT DATA
Contents
68-0207-3

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Summary of Contents for Honeywell H1008A

  • Page 1: Table Of Contents

    H1008A,D Automatic Humidity Controls PRODUCT DATA FEATURES • The H1008A,D provides automatic control for by-pass flow-through, powered flow-through, steam and drum humidifiers in central heating systems. • The H1008D also provides automatic control for dehumidification using heat/energy recovery ventilators or dehumidifiers.

  • Page 2: Specifications

    Honeywell Inc., 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386 (612) 951-1000 In Canada—Honeywell Limited/Honeywell Limitée, 155 Gordon Baker Road, North York, Ontario M2H 3N7. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
  • Page 3 M12822 FOR WRAPAROUND INSERTION STRIP Fig. 2. Select duct location for control. 7/16 IN. (11 MM). Use the following procedure to mount the H1008A,D in the FOR STRAIGHT return air duct: INSERTION STRIP 5/16 IN. (8 MM). 1. Remove the cover by placing your thumb in the bottom...

  • Page 4: Wiring

    CG and CW.) See Fig. 6. 4. To Wire the C7089H Outdoor Temperature Sensor, wire the sensor to the two OUT terminals on the H1008A,D. OPTIONAL FLOW OUTDOOR THROUGH...
  • Page 5 IF USING OUTDOOR TEMPERATURE SENSOR, REMOVE FACTORY RECOVERY UNITS OR EXTERNAL CONTACTORS THAT SWITCH HIGH INSTALLED JUMPER. VOLTAGE DEHUMIDIFIERS. ISOLATED RELAY CONTACTS. JUMPER AND DEHUM TERMINALS NOT PRESENT ON H1008A MODEL. M13295 Fig. 8. Wiring for fan-powered flow-through humidifers. 68-0207—3...
  • Page 6 RECOVERY UNITS OR EXTERNAL CONTACTORS THAT SWITCH HIGH TERMINALS W AND CW TO FURNACE. VOLTAGE DEHUMIDIFIERS. IF USING OUTDOOR TEMPERATURE SENSOR, REMOVE FACTORY JUMPER AND DEHUM TERMINALS NOT PRESENT ON H1008A MODEL. INSTALLED JUMPER. M13298 Fig. 9. Wiring for steam humidifiers.

  • Page 7: Settings

    50°F (10°C) dewpoint and automatically adjusts the humidity temperature sensor. level to prevent window frost or condensation. The H1008A,D activates a ventilator or dehumidifier to lower the indoor Control enters the error mode if any sensor reads out-of- humidity level when the house dewpoing rises above 58°F.

  • Page 8: Checkout

    H1008A,D AUTOMATIC HUMIDITY CONTROL CHECKOUT Test Mode Use the following procedure to place the control in the test mode and call for humidification: NOTE: The furnace blower must be on for the humidifier to 1. Turn the frost factor setpoint dial to the Test position.

This manual is also suitable for:

H1008d

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