beautypg.com

Reznor YDSA Operation Manual User Manual

Page 2

background image

Form O-Y, PN 273647R1, Page 2

2.0 Maintenance

Requirements

To ensure long life and satisfactory performance, a system that is operating under

normal conditions should be inspected according to the Maintenance Schedule in

Paragraph 2.1. If in an area where an unusual amount of dust or soot or other impuri-

ties are present in the air, more frequent inspection is recommended.
Refer to the illustration in

FIGURE 1, shown on page 4 and follow the instructions in

the paragraphs referenced below to maintain this equipment. Maintenance require-

ments apply to all Models and Sizes unless noted.

1.0 General

This booklet includes operation, maintenance, and service information for Model

YDHA, Model YDMA, and Model YDSA. Before beginning any procedure, carefully

review the information, paying particular attention to the warnings. Handling of refrig-

erant should only be performed by a certified HVAC technician with knowledge of

the requirements of R-410A refrigerant and in compliance with all codes and require-

ments of authorities having jurisdiction.

There are warning labels on the unit and throughout this manual. For your safety,

comply with all warnings during installation, operation, and service of this system.

See definitions of Hazard Intensity Levels of warnings below.

Definitions of Hazard

Intensity Levels used

in this Manual

HAZARD INTENSITY LEVELS

1.

DANGER: Failure to comply will result in severe personal injury or death

and/or property damage.

2.

WARNING: Failure to comply could result in severe personal injury or

death and/or property damage.

3.

CAUTION: Failure to comply could result in minor personal injury and/or

property damage.

1.0 General .......................................................2
2.0 Maintenance Requirements .....................2

2.1 Maintenance Schedule ...........................................3
2.2 Control Locations ....................................................4
2.3 Cabinet Size 1 or 2 by Model & Size Cross-Referenced

to Heat Section Size & Type ...........................5

3.0 Maintenance and Service Procedures -

Unit & Cooling Components ....................6

3.1 Filters ......................................................................6
3.2 Supply Fan and Variable Frequency Drive .............8
3.3 Optional Dampers and Damper Actuator ................9
3.4 Condenser Fans ...................................................10
3.5 Coils and Related Cooling Components ...............10
3.6 Check Refrigerant Pressure and Temperatures

(subcooling and superheat) ...........................17

3.7 Compressor Operation, Maint, and Replacement 19
3.8 Other Controls.......................................................27

4.0 Maintenance/Service Procedures - Power

Exhaust and Energy Recovery ..............27

4.1 Power Exhaust, Option PE ...................................27
4.2 Energy Recovery Wheel,

Option EW .....................................................28

5.0 Maintenance/Service Procedures - Gas

Heat Section ............................................32

5.1 Gas Heat Controls ................................................32
5.2 Combustion Air and Venting .................................37
5.3 Vent Maintenance and Operation .........................40
5.4 Burner and Heat Exchanger .................................41

6.0 Maintenance/Service Procedures - Electric

Heat Section ............................................42

7.0 Troubleshooting ......................................43

7.1 Troubleshooting - Refrigeration ............................43
7.2 Troubleshooting Compressor Digital Controller ...45
7.3 Troubleshooting the Heat Section ........................46

INDEX .............................................................48

Table of Contents

This manual is related to the following products: