Reznor MAPS III, Cabinet D RECB Users Manual - Manual (Page 7)

Form O-MAPSIII Cabinet D, P/N 222918R9, Page 7
3.4 Coil
Maintenance
Inspect all cooling system coils at the beginning of the cooling season or more often if
needed. Follow the cleaning instructions below. If additional cleaning is required or if a
coil must be removed for any reason, consult the factory. Be prepared to provide rating
plate and installation information.
Condenser Coil Access - The bank of condensing coils is located on top of the unit.
Condenser Coil Cleaning Instructions:
1) Verify that the electrical power has been turned off and the disconnect switch
locked.
2) Use a soft brush to remove any dirt and debris from the coils.
3) Spray with cold or warm (not hot) water and a cleaning solution (non-acid based
coil cleaner is recommended). Due to possible damage to the coil, do not use
high pressure spray.
4) When clean, rinse with cool, clean water.
Evaporator Coil Access - The evaporative coils can be accessed by opening the coil
cabinet door.
Inspect coils for debris, dirt, grease, lint, pollen, mold, or any element which would
obstruct heat transfer or airflow. Inspect coils and tubing for physical damage. Inspect
feeders, piping connections, coil headers, and return bends for signs of fatigue, rub-
bing, and physical damage.
Clean the coils annually, or more often if needed. Use the proper tools and follow the
instructions carefully to avoid damaging the coil. Use of a non-acid based coil cleaner
is recommended. Due to possible damage to the coil, high pressure spray is not rec-
ommended.
Evaporator Coil Cleaning Instructions:
1) Verify that the electrical power has been turned off and the disconnect switch
locked.
2) Open the access panels.
3) Use a soft brush to remove any dirt and debris from both sides of a coil.
4) Spray with cold or warm (not hot) water and a cleaning solution (non-acid based
coil cleaner is recommended). Due to possible damage to the coil, high pressure
spray is not recommended. First spray the leaving airflow side, then the inlet
airflow side.
As much as possible, spray the solution perpendicular to the face of the coil.
Follow the instructions on the cleaning solution. When cleaning process is
complete, rinse both sides with cool, clean water.
FIGURE 4 - Coil Circuits (Views are from the control side of the system.)
Condenser Coils by Circuit
Condenser Coils by Circuit
A D A B C
D
A
B
C
10 ton MC Coil
5 ton MC Coil
10 ton MC Coil
15 ton MC Coil 15 ton MC Coil
Inlet 1
Ø 0.881
Inlet 1
Ø 0.879
Inlet
Ø 0.881
Inlet 2
Ø 0.881
Inlet 2
Ø 0.879
Inlet 1
Ø 0.881
Inlet 2
Ø 0.881
Outlet
Ø 0.881
Outlet
Ø 0.881
Outlet
Ø 0.879
Outlet
Ø 0.881
Discharge Line Ø 0.875
Discharge Line Ø 0.875 Discharge Line Ø 0.875
Discharge Line Ø 0.500 Discharge Line Ø 0.875 Discharge Line Ø 0.875
Liquid Line Ø 0.875
Liquid Line
Ø 0.875
Liquid Line
Ø 0.875
Liquid Line
Ø 0.875
Liquid Line
Ø 0.500
Liquid Line Ø 0.875
Filter Drier
Filter Drier
Filter Drier
Filter Drier
Filter Drier
Filter Drier
A D B C
Discharge Line Ø 0.875
Discharge Line Ø 0.875 Discharge Line Ø 0.875
Discharge Line Ø 0.875
Liquid Line
Ø 0.875
Liquid Line
Ø 0.875
Liquid Line Ø 0.875
Liquid Line Ø 0.875
Filter Drier
Filter Drier
Filter Drier
Filter Drier
Outlet
Ø 0.881
Outlet
Ø 0.881
Outlet
Ø 0.881
Outlet
Ø 0.881
Inlet
Ø 0.881
Inlet 2
Ø 0.881
Inlet 1
Ø 0.881
Inlet 2
Ø 0.881
Inlet 1
Ø 0.881
Inlet
Ø 0.881
10 ton MC Coil 10 ton MC Coil
15 ton MC Coil
15 ton MC Coil
(See compressor locations on page 12.)
(See compressor locations on page 12.)
(See compressor
locations on page 12.)
Evaporator Coils by
Circuit (interlaced)
Evaporator Coils by
Circuit (interlaced)
A
C
D
A
C
D
A
C
D
All three
outlets
Ø 1.380
All four
outlets
Ø 1.380
Suction Line Ø 1.375
Suction Line Ø 1.375
Suction Line Ø 0.875
Suction Line Ø 1.375
Suction Line Ø 1.375
Suction Line Ø 1.375
RCB/RDCB/RECB 480 and
RDB/RDDB/REDB 538, 564, and 602
RCB/RDCB/RECB 360 and
RDB/RDDB/REDB 418, 444, and 484
RCB/RDCB/RECB 600 and
RDB/RDDB/REDB 658, 684, and 722
A
B D
C
Suction Line Ø 1.375
Suction Line Ø 1.375
Suction Line Ø 1.375
Suction Line Ø 1.375
(T
o TXV valves and Distributors on Evaporator Coils)
(T
o TXV valves and Distributors on Evaporator Coils)
(T
o TXV valves and Distributors
on Evaporator Coils)
Condenser Coils by Circuit
15 ton MC Coil
Inlet
Ø 0.506
Outlet Ø 0.506 Inlet
Ø 0.879
Outlet Ø 0.879
Outlet Ø1.380
Outlet Ø1.380
Outlet Ш 0.879