Carrier Dehumidifier P707 User Manual

INSTALLATION

AND OPERATION

INSTRUCTIONS

P707

Dehumidistat

Part Number P707-MDEH1

cause of structure damage and IAQ problems such as mold

and mildew.

SAFETY CONSIDERATIONS

Installing, starting up, and servicing equipment can be haz-

ardous due to system pressures, electrical components and

equipment location (roofs, elevated structures, etc.). Only

trained, qualified installers and service mechanics should

install, start up, and service this equipment.

When working on the equipment, observe precautions in the

literature and on tags, stickers, and labels attached to the

equipment.

INSTALLATION

NOTE: For technical assistance, call 1-800-747-1762.

To install the dehumidistat, perform the following

procedure:

1. Determine the mounting location for the dehumidistat.

Location should be in an easily accessible area. Do not

locate where humidity sensor could be affected by

direct humidity sources.

2. All controls are low voltage. Use 22 to 26 gage field-

provided wire.

3. Connect two wires to the DEHUM terminals on venti-

lator. See Fig. 2. Polarity does not matter. Either wire

can be connected to either terminal.

4. Run wire to mounting location. Do not run control

wire with power wiring. Interference from power wir-

ing can cause changes to control signal.

Before installation, always check to be sure main power to

systems are OFF. Electrical shock can cause personal

injury or death.

GENERAL

The MDEH1 dehumidistat is used with Totaline SHR series

heat recovery ventilators. See Fig. 1. The dehumidistat is used

to control the indoor humidity level. High humidity is a major

Fig. 1 — Dehumidistat

Manufacturer reserves the right to

discontinue, or change at any time,

specifications or designs without notice

and without incurring obligations.

REPLACEMENT COMPONENTS DIVISION

LITERATURE NUMBER P707-3SI

REPLACES: New

PRINTED IN U.S.A.

CATALOG NUMBER 570-330

LIMITED TWO-YEAR WARRANTY

TWO-YEAR WARRANTY — This CARRIER CORPORATION product is warranted to be free from defects

in material and workmanship under normal use and maintenance for a period of two years from the date of

original installation. A new or remanufactured part to replace the defective part will be provided without

charge for the part itself, through a qualified servicing CARRIER CORPORATION dealer or service, PRO-

VIDED the defective part is returned to our distributor. The replacement part assumes the unused portion of

the warranty.

THIS WARRANTY DOES NOT INCLUDE ANY ADDITIONAL LABOR ALLOWANCE OR OTHER COSTS

incurred for diagnosis, repairing, removing, installing, shipping, servicing, or handling of either defective

parts or replacement parts. SUCH COSTS MAY BE COVERED BY a separate warranty provided by the

installer.

LIMITATIONS OF WARRANTIES — ALL IMPLIED WARRANTIES (INCLUDING IMPLIED WARRANTIES

OF MERCHANTABILITY) ARE HEREBY LIMITED IN DURATION TO THE PERIOD FOR WHICH THE LIM-

ITED WARRANTY IS GIVEN. THE EXPRESSED WARRANTIES MADE IN THIS WARRANTY ARE

EXCLUSIVE AND MAY NOT BE ALTERED, ENLARGED, OR CHANGED BY ANY DISTRIBUTOR,

DEALER, OR OTHER PERSON WHATSOEVER.

CARRIER WILL NOT BE RESPONSIBLE FOR:

1. Normal maintenance as outlined in the installation and servicing instructions or owner’s manual including

replacement of filters or bulbs.

2. Damage or repairs required as a consequence of faulty installation or application by others.

3. Failure to start due to voltage conditions, blown fuses, open circuit breakers or other damages due to the

inadequacy or interruption of electrical service.

4. Damage or repairs needed as a consequence of any misapplication, abuse, improper servicing, unautho-

rized alteration, or improper operations.

5. Damage as a result of floods, winds, fires, lightning, accidents, corrosive atmosphere, or other conditions

beyond the control of CARRIER CORPORATION.

6. Parts not supplied or designated by CARRIER CORPORATION.

7. CARRIER CORPORATION products installed outside the continental U.S.A., Alaska, Hawaii, and

Canada.

8. ANY SPECIAL INDIRECT OR CONSEQUENTIAL PROPERTY OR COMMERCIAL DAMAGE OF ANY

NATURE WHATSOEVER. Some states do not allow the exclusion of incidental or consequential dam-

ages, so the above limitation may not apply to you.

Model No.

Unit Serial No.

Date of Installation

Name of Owner

Installed by

Address of Installation