WaterFurnace Envision (XL) - Manual (Page 41)

ENVISION 7-25 TONS INSTALLATION MANUAL
42
Preventive Maintenance
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 or air vents may draw air into the system.
NOTES: If the installation is performed in an area with a known high mineral content (125 P.P.M. 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.
Other Maintenance
Filters
Filters must be clean to obtain maximum performance. They should be inspected every two to three months under normal
operating conditions and be replaced when necessary. Units should never be operated without a filter.
Condensate Drain
In areas where airborne bacteria produce a residual buildup in the drain pan, it may be necessary to chemically treat the
pan 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.
Air Coil
The air coil must be clean to obtain maximum performance. Check once a year under normal operating conditions and
brush, vacuum or chemically clean the air coil if necessary. Care must be taken not to damage or disturb the aluminum fins
while cleaning.
Drive Belts
Check periodically for proper tension.
CAUTION: Fin edges are sharp.
Replacement Procedures
Obtaining Parts
Contact your distributor for service or replacement parts required.
In-warranty Material Return
Material may not be returned except by permission of authorized service personnel. Contact your local distributor for
warranty return authorization and assistance.