Aprilaire 1150 - Manual (Page 2)

PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Materials Provided and Not Provided . . . . . . . . . . . . . . . . . . 3
Electrical Specifications, Capacities and Weights . . . . . . . . 4
Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Overview of Humidifier Operation. . . . . . . . . . . . . . . . . . . . . 7
INSTALLATION
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Setting Slide Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Choosing a Location for Humidifier Components . . . . . . . . 13
Distribution Tube Installation . . . . . . . . . . . . . . . . . . . . . . . 15
Mounting the Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Airflow Proving Switch Installation. . . . . . . . . . . . . . . . . . . 23
Supply Water and Drain Piping . . . . . . . . . . . . . . . . . . . . . . 23
OPERATION
Start-up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
MAINTENANCE
Inspect and Service the Humidifier . . . . . . . . . . . . . . . . . . . 29
Off-season Shut Down Procedure . . . . . . . . . . . . . . . . . . . . 31
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
APPENDIX – ABSORPTION
DISTANCE CALCULATION. . . . . . . . . . . . . . . . . . . . . . . . . . 38
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover
TABLE OF CONTENTS
ATTENTION INSTALLER
This product must be installed by qualified HVAC and
electrical contractors. Failure to do so voids product
warranty due to possible product misapplication.
This product must be installed in compliance with
local, state, and federal codes.
WARNING
1. 240 volts may cause serious injury or death from electrical
shock. Disconnect power before installing supply wiring.
2. Water temperature in excess of 140°F (60°C) may cause
serious injury due to burns. Allow unit to cool before
draining or removing chamber.
3. The humidifier chamber, distribution assembly, and all
connected hose or piping may contain or discharge hot
steam and/or hot water at 212°F (100°C). Discharged
steam is not visible. Contact with hot surfaces,
discharged hot water, or air into which steam has been
discharged may cause severe personal injury.
4. Water pressure greater than 80 psi (550 kPa) may cause
the humidifier to overflow.
5. Humidifier weighs up to 80 lbs when operating.
Improper mounting of humidifier may cause humidifier
to fall from wall or ceiling resulting in serious injury.
Mount humidifier to a structurally stable surface per the
instructions in this manual.
6. Failure to properly ground unit may result in property
damage due to fire, or serious injury or death from
electrical shock.
7. Failure to follow the instructions in this manual may
cause moisture to accumulate, which may cause
bacteria and mold growth or dripping water into building
spaces. Dripping water may cause property damage.
CAUTION
1. Do not set humidity higher than recommended.
Condensation damage may result.
2. Failure to follow the instructions in this manual
for installation of distribution tube, airflow
proving switch, and high humidity limit switch
may cause condensation damage.
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