Preventive Maintenance; Replacement Procedures - York LX Series Installation Manual

LX SERIES INSTALLATION MANUAL

Preventive Maintenance

Proper maintenance is very important to obtain optimum
performance and longevity for the heat pump system. It is best to
establish a periodic maintenance schedule with the installer so the
heat pump system can be checked regularly.
Water Coil Maintenance
1. Keep all air out of the water. An open loop system should be
checked to ensure that the well head is not allowing air to
infiltrate the water line. Lines should always be airtight.
2. Keep the system under pressure at all times. It is
recommended in open loop systems that the water control
valve be placed in the discharge line to prevent loss of
pressure during off cycles. Closed loop systems must have
positive static pressure.
NOTE: On open loop systems, if the installation is in an area with
a known high mineral content (125 PPM or greater) in the water,
it is best to establish with the owner a periodic maintenance
schedule so the coil can be checked regularly. Should periodic
coil cleaning be necessary, use standard coil cleaning procedures
which are compatible with the heat exchanger and copper water
lines. Generally, the more water flowing through the unit the
less chance for scaling. However, flow rates above 3gpm/ton
may erode the heat exchanger or water lines, due to high water
velocity or system debris.
Other Maintenance
Filters
Filters must be clean to obtain maximum performance. They
should be inspected monthly under normal operating conditions
and be replaced when necessary. Units should never be operated
without a filter. Operating the system without a filter or with a dirty
filter could affect the longevity of the heat pump.

Replacement Procedures

Obtaining Parts
When ordering service or replacement parts, refer to the model
number and serial number of the unit as stamped on the serial
plate attached to the unit. If replacement parts are required,
mention the date of installation of the unit and the date of failure,
along with an explanation of the malfunctions and a description of
the replacement parts required.
Condensate Drain
In areas where airborne bacteria produce a slime in the drain pan,
it may be necessary to treat chemically to minimize the problem.
The condensate drain can pick up lint and dirt, especially with dirty
filters. Inspect twice a year to avoid the possibility of overflow.
Blower Motors
ECM blower motors are equipped with sealed ball bearings and
require no periodic oiling.
Hot Water Generator Coil
See Water Coil Maintenance section above.
Air Coil
The air coil must be cleaned to obtain maximum performance.
Check once a year under normal operating conditions and, if dirty,
brush or vacuum (with a brush attachment) clean. Care must be
taken not to damage the aluminum fins while cleaning.
CAUTION: Fin edges are sharp.
In-Warranty Material Return
Material may not be returned except by permission of authorized
warranty personnel. Contact your local distributor for warranty
return authorization and assistance.
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