Reznor YDSA Operation Manual - Manual (Page 3)

Form O-Y P/N 273647R1, Page 3
IMPORTANT: Do not release refrigerant to the atmosphere! If
required service procedures include the adding or removing
of refrigerant, the service technician must comply with all
federal, state and local laws. The procedures discussed in
this manual should only be performed by a qualified HVAC
technician familiar with R-410A refrigerant.
WARNING
Lock power OFF before performing any maintenance
procedure (except where power is required such as
checking refrigerant pressure and temperature). Lock
disconnect switch in OFF position. If the system has a gas
heat section, when you turn off the power supply, turn off
the gas. See Hazard Levels on page 2.
2.1 Maintenance
Schedule
Monthly
□ Inspect all filters; clean or replace as needed. See Paragraph 3.1, page 6.
□ Inspect the cooling coil condensate drain; clean as needed. For information, see
Paragraph 3.5, page 10.
Annually
All Models - Beginning of the cooling season or more frequently
in year-round cooling climate:
□ Inspect the wiring for any damaged wire. Replace damaged wiring.
□ Inspect the cooling coil condensate drain pan. Clean the coil cabinet, clean the
drain pan, and fill the trap.
□ Inspect/clean condenser fans. See Paragraph 3.4, page 10.
□ Inspect/clean all coils. See Paragraph 3.5, page 10.
□ Check refrigerant temperatures and pressures (superheat and subcooling).
These checks are done when the unit is operating. See Paragraph 3.6, page 17.
□ Check compressor operation. See Paragraph 3.7, page 19.
Systems with the Optional energy recovery wheel: See Paragraph 4.0, page 27.
□ Inspect the wheel and clean as needed.
□ Check wheel RPM and drive components.
□ Check wheel seals.
Systems with the Optional gas heat section (beginning of the heating
season) - See Paragraph 5.0, page 32:
□ Clean all dirt and grease from the combustion air openings and the venter
assembly.
□ Check the heat exchanger, burner, and venter for scale, dust, or lint
accumulation. Clean as needed.
□ Check the gas valves to ensure that gas flow is being shutoff completely.
Systems with the Optional electric heat section (beginning of the
heating season) - See Paragraph 6.0, page 42:
□ Check wiring connections.
□ Check the heat section and elements for dust or lint accumulation. Clean as
needed.
If replacement parts are required, use only factory-authorized parts. For
information, go to www.ReznorHVAC.com or call 800-695-1901.