WaterFurnace 7 Series - Manual (Page 45)

45
7 SERIES 50Hz 700A11 INSTALLATION MANUAL
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 either the cupronickel or copper
water lines. Generally, the more water flowing through the
unit the less chance for scaling.
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.
CAUTION: Fin edges are sharp.
Preventive Maintenance
Replacement Procedures
Other Maintenance
Filters
Air filters and variable speed drive filter 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. The VS drive filter is located on the lower
left corner of the cabinet. Removing the two screws in the
honey comb grill allows access to the filter. Run the filter
under warm water and gently rub. Let the filter dry. The, re-
install the filter and cover.
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.
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.