Reznor MAPSII Series REDA Users Manual - Manual (Page 2)

Form O-MAPS II, P/N 209179 R7, Page 2
1.0 GENERAL This booklet includes operation, maintenance, and service information. Before
beginning any procedure, carefully review the information, paying particular
attention to the warnings. Handling of refrigerant should only be performed by
a certified HVAC technician in compliance with all codes and requirements of
authorities having jurisdiction.
The instructions in this manual apply to the following MAPS® II models:
Contents
Model Description
RCA
Makeup Air Cooling Packaged System, 800-10000 CFM
RDCA Makeup Air Cooling Packaged System, 800-10000 CFM, with
Gas Heat Section (100-700 MBH)
RECA Makeup Air Cooling Packaged System with Electric Heat
Section (5-88 kw)
RDA Makeup Air Cooling and Dehumidification Reheat Cycle
Packaged System, 800-10000 CFM
RDDA Makeup Air Cooling and Dehumidification Reheat Cycle
Packaged System, 800-10000 CFM, with a Gas Heat Section
(100-700 MBH)
REDA Makeup Air Cooling and Dehumidification Reheat Cycle
Packaged System, 800-10000 CFM, with an Electric Heat
Section (5-88 kw)
1.0 GENERAL ..................................................................................... 2-3
2.0 Maintenance Requirements ........................................................ 3-6
Maintenance Schedule ...................................................................3
Cross-Reference by Model/Size and Cabinet Size A, B, or C ........6
3.0 Filters .............................................................................................. 6
4.0 Blower Bearings and Belts ............................................................ 7
5.0 Coil Maintenance ......................................................................... 8-9
6.0 Check Refrigerant Pressure and Temperatures ..................... 9-11
Check Refrigerant Pressure ...........................................................9
Check Refrigerant Temperatures ..................................................10
7.0 Compressor Maintenance and Replacement ....................... 11-20
Handling ........................................................................................12
Compressor Maintenance Checklist, Steps 1-13 .........................12
8.0 Thermal Expansion Valves .......................................................... 20
9.0 Gas Heat Section Maintenance - RDCA, RDDA, JHUP ......... 20-24
Burner Maintenance .....................................................................21
Venter Motor and Wheel ..............................................................23
Gas Valves ....................................................................................24
Combustion Air Pressure Switch ..................................................24
Limit Control ..................................................................................24
10.0 Electric Heat Section Maintenance - REDA and RECA ........... 25
11.0 Troubleshooting ..................................................................... 25-28
General Refrigeration Circuit ........................................................25
Troubleshooting Gas Heat Section - RDCA, RDDA, and JHUP ...26
Troubleshooting the Electric Heat Section - REDA and RECA ....28
Index .................................................................................................... 28
NOTE: Information
on gas furnace
maintenance and
service also applies
to MAPS II optional
duct furnace curb,
Model JHUP.