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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.
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
Manufacturer reserves the right to
discontinue, or change at any time,
specifications or designs without notice
and without incurring obligations.
INSTALLATION
AND OPERATION
INSTRUCTIONS
Part Number P707-MDEH1
Fig. 1 — Dehumidistat
REPLACEMENT COMPONENTS DIVISION
© CARRIER CORPORATION 2004 2-04
PRINTED IN U.S.A.
cause of structure damage and IAQ problems such as mold
and mildew.
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.
LITERATURE NUMBER P707-3SI
P707
Dehumidistat
REPLACES: New
CATALOG NUMBER 570-330
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Related Manuals for TOTALINE TOTALINE P707
Summary of Contents for TOTALINE TOTALINE P707
- Page 1 High humidity is a major Manufacturer reserves the right to REPLACEMENT COMPONENTS DIVISION discontinue, or change at any time, © CARRIER CORPORATION 2004 2-04 specifications or designs without notice PRINTED IN U.S.A. and without incurring obligations.
- Page 2 5. The dehumidistat consists of two pieces, a mounting plate and the cover. Remove cover from the mounting plate. Pull wiring through the hole in the mounting plate. 6. Connect wiring to the terminals on the mounting plate of the dehumidistat. Two spade connector are provided in the dehumidistat for wiring connections.
- Page 3 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.
- Page 4 Manufacturer reserves the right to REPLACEMENT COMPONENTS DIVISION LITERATURE NUMBER P707-3SI discontinue, or change at any time, © CARRIER CORPORATION 2004 2-04 REPLACES: New specifications or designs without notice PRINTED IN U.S.A. CATALOG NUMBER 570-330 and without incurring obligations.