Reznor ZQYRA Unit Installation Manual - Manual (Page 62)

Form I-ZQYRA P/N 260414R5, Page 62
10.0 Maintenance
and Service
10.1 Maintenance Schedule
Perform all of the procedures in Paragraph 10.2 at least once a year or more frequently
if the installation requires it.
10.2 Maintenance
Procedures
Inlet Air Hoods
with Filters -
Clean filters
(See Paragraph 6.2.3.
Size 8 - 2 filters;
Size 12 - 3 filters).
Condensate Drain Connection -
Clean drain pan and trap.
Vertical Discharge Air
Opening (In the bottom)
Vertical Return Air Opening
(in the bottom)
Inlet
Side
Post
Supply
Fan Access
Inlet
Hoods
Exhaust Hood -
Clean filter and
optional damper
blades.
Disconnect Switch (Optional)
- Lock during maintenance
and service.
Control
Access - See
FIGURE 16,
page 16.
Compressor
Access
Electric Heat (Optional)
High
Voltage
Entrance
Low
Voltage
Entrance
Exhaust
Fan Access Horizontal
Supply
Air
Horizontal
Return Air
Opening
(Control Side
)
Return Air
Filter Access
Inlet Air
Filter Access
Enthalpy
Wheel Access
Control
Side
Post
FIGURE 32 - Access Locations for Maintenance
Procedure
WARNING
Turn off the power and lock the disconnect switch before performing
maintenance or service.
10.2.1 Inlet and
Exhaust Hoods
10.2.2 Inlet and
Exhaust Fans
Fan motors are permanently lubricated; lubrication is not required. Carefully remove
any accumulation of dirt and grease.
If equipped with an Option A23 fan selection, the exhaust fan motor is belt driven.
Check the condition and tension of the belt. Belt tension should allow a 1/2” depression
of the belt. If the belt needs to be replaced, use a factory-authorized replacement.
Remove (See Paragraph 6.2.3) and clean the filters. If equipped, clean the screen.
Remove all dirt that will obstruct airflow. If there are optional dampers, carefully remove
dirt from the blades.
10.2.3 Inlet and
Return Air Filters
Size Location Filter Type and Size Qty P/N
8
Inlet Air Filters Pleated 16x20x2 2 104110
Return Air Filter Pleated 16x20x2 1 104110
12
Inlet Air Filters Pleated 16x20x2 2 104110
Return Air Filter Pleated 16x25x2 1 104112
Check inlet and return air filters. Replace as needed.
Check Wheel RPM
The wheel should rotate approximately five rotations in 15 seconds. If rotation is
not normal, see the wheel maintenance information that follows. Perform service as
needed and/or replace any defective parts.
Wheel Maintenance
The energy recovery wheel cassette is designed to be slid out of the unit for inspection
and cleaning. Follow the instructions in FIGURE 33 and cleaning instructions below.
How often the wheel needs to be cleaned depends on its environment. Because the
wheel rotates between two opposing airstreams, it is self-cleaning of most dry dirt and
dust and will remain efficient for a long period of time. However, when the wheel is
exposed to oils, tars, or greases in either the supply or exhaust airstream, the surface
will become “sticky” and will hold the dirt and dust. Over time the air passages will
become blocked causing loss of recovery, excessive pressure drop, and loss of energy
savings.
10.2.4 Energy
Recovery Wheel