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MAINTENANCE INSTRUCTIONS for
HUMIDIFIER MODEL EHUMD500APA00C
MODEL EHUMD500APA00C
1. Humidifier Cover Assembly
2. Base Assembly
3. Evaporative Assembly
4. Distribution Tray
5. ”V” Notches
6. Humidifier Pad
7. Scale Control Insert
8. Drain Line
9. Power Cord
WARNING
Disconnect Electrical Power and Shut Off Water Supply Before
Servicing. Failure to follow this warning may cause property damage, personal injury or death.
CAUTION
Turn Humidifier Control to “OFF” or lowest setting before servicing.
Sudden operation may cause personal injury or property damage.
1. Note Humidifier Control setting and turn dial to the “OFF” position.
2. Disconnect electrical power and turn off water supply.
3. Unlatch humidifier front cover assembly (1) from base assembly (2) at the bottom of the cover,
lift, and set aside.
4. Pull out the evaporative assembly (3) by grasping at the top and tipping out.
5. Unsnap the distribution tray (4) from the scale control insert (7). Follow the instructions below
depending upon the type of distribution tray in your humidifier:
For trays with a synthetic fabric liner: Lightly scrape out or brush off any mineral deposits,
being careful not to stretch or loosen the synthetic fabric liner. Soaking the tray in vinegar or
a lime-removing agent is helpful when trying to remove stubborn mineral deposits.
For trays with granular coating: Do not scrape off the granular coating, but lightly scrape out
any mineral deposits and clean the “V” notches (5). This textured surface helps ensure even
water flow for maximum performance. If the granular coating has been removed, replace
distribution tray.
6. Slide the Humidifier Pad (6) out from the scale control insert (7). Clean the scale control insert
of mineral deposits. Replace Humidifier Pad annually with a BAYPAD02A1310A Humidifier Pad.
Slide the Humidifier Pad back into the scale control insert with the colored spot up and snap
the distribution tray (4) back into place.
7. Inspect the plastic feed tube by gently flexing it and looking for cracks or signs of wear.
Replace tube if it is cracked, brittle, or has been damaged.
8. Reinstall the evaporative assembly (3) into the humidifier by fitting its drain into the round
receptacle at the base of the humidifier. Push the assembly in at the top between the retaining
ribs that hold the assembly in place in a vertical position.
9. Remove the drain line (8) from the bottom of the humidifier. If applicable, flex it to loosen any
mineral deposits or blockage. Then flush it with water under pressure. If it does not clear,
replace it. Slip drain line back onto the drain fitting. Make sure the drain line has a constant
downward slope and is not flattened or blocked.
10. Reinstall front cover assembly (1) by hooking at the top of the base assembly (2) and latching
at the bottom.
11. Reconnect electrical power (9) and turn on the water supply.
12. Check system operation:
Automatic Humidifier Control: (Automatic or Manual mode) Check system operation and reset
Change Humidifier Pad indicator by setting the knob to “Test/Reset”. With furnace blower
operating and furnace calling for heat, humidifier will operate for one minute. DO NOT LEAVE
IN TEST MODE AS HUMIDIFIER WILL NOT OPERATE.
13. Set Humidifier Control to its original position.
NOTE: The motor is permanently lubricated and does not need to be oiled.
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90-1075
BASE LIMITED WARRANTY
Subject to the terms and conditions of this limited warranty, Trane U.S., Inc. (“Company’) extends a
limited warranty against manufacturing defects for the product(s) identified in Tables 1, 1A, 1B attached
hereto (“Products’) that are installed in a residential/multi-family application (personal, family or household
purposes) under normal use and maintenance in the United States and Canada.
This limited warranty applies to Products manufactured on or after January 1, 2017.
In order to maximize the available benefits under this limited warranty, the Purchaser (as defined below)
should read it in its entirety. All repairs of Product parts covered under this limited warranty must be made
with authorized service parts and by a licensed HVAC service provider. Additionally, commercial applications
are treated differently under this limited warranty as stated in Tables 1, 1A, 1B attached hereto. For
purposes of this limited warranty, “commercial applications” shall mean any application other than for
personal, family, or household use.
TERM: The limited warranty period for Products is as stated in Tables 1, 1A, 1B attached hereto. If the
Purchaser properly registers the Products, the limited warranty period shall be extended as stated in Tables
1, 1A, 1B attached hereto. Regardless of registration, the Commencement Date for a limited warranty
period shall be the date that the original installation is complete and all Product start-up procedures have
been properly completed and verified by an installer’s invoice. If the installation and start-up date cannot
be verified by the installer’s invoice, the Commencement Date shall be sixty (60) days after the factory
manufacture date which is verified by the Product serial number. Where a Product is installed in a newly
constructed home, the Commencement Date is the date the Purchaser purchased the residence from the
builder.
Proof of Product purchase, installation, and/or closing date of the residence may be required to confirm
the Commencement Date.
The installation of Product replacement parts under this limited warranty shall not extend the original
warranty period. The warranty period for any Product part replaced under this limited warranty is the
applicable warranty period remaining under the original Product warranty.
WHO IS COVERED: This limited warranty is provided only to the original owner and his or her
spouse (“Purchaser’) of the residence where the Products are originally installed. This warranty is not
transferable except according to terms stated on the applicable website identified below under Registration
Requirements. Company has the right to request any and all proof of Product purchase or installation and/or
closing date of the residence.
WHAT COMPANY WILL DO: Company may request proof of Product purchase and/or installation in
order to provide Product parts under this limited warranty. As Company’s only responsibility and Purchaser’s
only remedy under this limited warranty, Company will furnish a replacement part to the licensed
HVAC service provider, without charge for the part only, to replace any Product part that fails due to a
manufacturing defect under normal use and maintenance. The Purchaser must pay for any and all shipping
and handling charges and other costs of warranty service for the replacement part. If a Product part is
not available, Company will, at its option, provide a free suitable substitute part or provide a credit in the
amount of the then factory selling price for a new suitable substitute part to be used by the Purchaser
towards the retail purchase price of a new Company product. Any new Product purchase shall be at
Purchaser’s sole cost and expense including, but not limited to, all shipping, removal, and installation costs
and expenses.
REGISTRATION REQUIREMENTS: All Products must be properly registered online by the Purchaser
within sixty (60) days after the Commencement Date to receive the registered limited warranty terms. To
register online, go to:
http://www.trane.com/Residential/For-Owners/Warranties or
http://www.americanstandardair.com/servicesupport/pages/warranty.aspx
and click “Begin Online Registration.” If a Purchaser does not register within this stated time period, the
base limited warranty terms shall apply.
ELIGIBILITY REQUIREMENTS: The following items are required in order for the Products to be
covered under this limited warranty:
• The Products must be in the same location where they were originally installed.
• The Products must be properly installed, operated, and maintained by a licensed HVAC service
provider in accordance with the Product specifications or installation, operation, and maintenance
instructions provided by Company with each Product. Failure to conform to such specifications and/or
instructions shall void this limited warranty. Company may request written documentation showing the
proper preventative maintenance.
• All Product parts replaced by Company under this limited warranty must be given to the servicing
provider for return to Company.
• Air handlers, air conditioners, heat pumps, cased or uncased coils and stand-alone furnaces must
be part of an Air Conditioning, Heating, and Refrigeration Institute rated and matched system or
a specification in a Company provided bulletin or otherwise approved in writing by a Company
authorized representative.
GW-658-4217
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