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PREMIER E SERIES DUAL CAPACITY INSTALLATION AND MAINTENANCE 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 cupro-nickel 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 monthly
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 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.
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 clean. Care must be taken not to damage the
aluminum fins while cleaning.
CAUTION:
Fin edges are sharp.
NOTE:
To obtain maximum performance, the air coil should be cleaned before start-up. A 10 percent
solution of dishwasher detergent and water is recommended for both sides of coil; a thorough water
rinse should follow.
ECM2 Fan Motors
ECM2 Blower Motors are equipped with sealed ball bearings and require no periodic oiling.
Desuperheater Coils
See Water Coil Maintenance section above.
CONTROLS
To check the unit control board for proper operation:
1) Disconnect thermostat wires at the control board.
2) Jumper the desired test input (Y1, Y2, W, O or G) to the R terminal with the SW2-8 in the
“OFF” position to simulate a thermostat signal.
3) If control functions properly:
• Check for thermostat and field control wiring (use the diagnostic inputs mode).
Troubleshooting
Preventive
Maintenance
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