Page 45
XP25
Maintenance
Outdoor Unit
Maintenance and service must be performed by a qualified
installer or service agency. At the beginning of each cooling
season, the system should be checked as follows:
1.
Clean and inspect outdoor coil (may be flushed with a
water hose). Ensure power is off before cleaning.
2.
Outdoor unit fan motor is factory-lubricated and sealed.
No further lubrication is needed.
3.
Visually inspect all connecting lines, joints and coils for
evidence of oil leaks.
4.
Check all wiring for loose connections.
5.
Check for correct voltage at unit (unit operating).
6.
Check amp draw on outdoor fan motor.
7.
Inspect drain holes in coil compartment base and clean
if necessary.
NOTE - If insufficient heating or cooling occurs, the unit
should be gauged and refrigerant charge should be
checked.
Outdoor Coil
It may be necessary to flush the outdoor coil more frequently
if it is exposed to substances which are corrosive or which
block airflow across the coil (e.g., pet urine, cottonwood
seeds, fertilizers, fluids that may contain high levels of
corrosive chemicals such as salts).
•
Outdoor Coil — The outdoor coil may be flushed with a
water hose.
•
Outdoor Coil (Sea Coast) — Moist air in ocean locations
can carry salt, which is corrosive to most metal. Units
that are located near the ocean require frequent
inspections and maintenance. These inspections
determine the need to wash the unit including the
outdoor coil. Consult your installing contractor for proper
intervals/procedures for your geographic area or
service contract.
Indoor Unit
1.
Clean or change filters.
2.
Lennox blower motors are factory-lubricated and
permanently sealed. No more lubrication is needed.
3.
Adjust blower speed for cooling. Measure the pressure
drop over the coil to determine the correct blower CFM.
Refer to the unit information service manual for pressure
drop tables and procedure.
4.
Check all wiring for loose connections.
5.
Check for correct voltage at unit. (blower operating)
6.
Check amp draw on blower motor.
Indoor Coil
1.
Clean coil if necessary.
2.
Check connecting lines, joints and coil for evidence of oil
leaks.
3.
Check condensate line and clean if necessary.
Locations with Possibility of Heavy Snow or
Freezing Rain Accumulation
Heavy snow and/or freezing rain can interfere with the
performance of the outdoor fan assembly. Lennox
recommends use of the optional snow guard (X8782) in
these areas.
Figure 23. Snow Guard Top Cover — X8782
SunSource
®
Home Energy System
This Dave Lennox
Signature
®
Collection heat pump is
factory-equipped with components that make it SunSource
®
Solar-Ready. These units can be matched with solar
modules and other optional equipment so that they can
become part of a SunSource
®
Home Energy System.
Units can be upgraded for use with solar equipment at the
time of installation or in the future.
Solar energy is first used to meet cooling/heating demands.
When the outdoor unit is not operating, the system powers
lighting, appliances and other electronic devices in the
home. Any surplus power is sent back to the utility company
for a possible credit. Check with your local utility company for
availability.
