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8
with the cleaner. The optimum solution temperature is 100°F
(38°C).
NOTE: Do NOT USE water in excess of 130°F (54°C), as the en
-
zymatic activity will be destroyed.
5. Thoroughly apply Totaline environmentally sound coil
cleaner solution to all coil surfaces including finned area, tube
sheets and coil headers.
6. Hold garden sprayer nozzle close to finned areas and apply
cleaner with a vertical, up-and-down motion. Avoid spraying
in horizontal pattern to minimize potential for fin damage.
7. Ensure cleaner thoroughly penetrates deep into finned areas.
8. Interior and exterior finned areas must be thoroughly cleaned.
9. Finned surfaces should remain wet with cleaning solution for
10 minutes.
10. Ensure surfaces are not allowed to dry before rinsing. Reap
-
ply cleaner as needed to ensure 10 minute saturation is
achieved.
11. Thoroughly rinse all surfaces with low velocity clean water
using downward rinsing motion of water spray nozzle. Pro
-
tect fins from damage from the spray nozzle.
Refrigeration System Components
Each heat pump refrigeration system includes a compressor, accu
-
mulator, reversing valve, dual-function outdoor coil with vapor
header check valve, cooling liquid line with a filter drier and a
check valve, dual-function indoor coil with a vapor header check
valve, and heating liquid line with check a valve and a strainer.
Unit sizes D17 - D24 have two compressor circuits. See Fig. 13
for typical unit piping schematic.
Dual-function outdoor and indoor coils are designed to provide
parallel coil circuits during evaporator-function operation and con
-
verging coil circuits during the condenser-function operation.
Refrigerant flow metering in the evaporator-function sequence is
provided by multiple Accutrol™ fixed-bore metering devices that
are located in the tee nipples between the liquid header and the en
-
trance to each coil circuit. The Accutrol metering device is brazed
into the nipple tube between the liquid header end and the side-
port tube. See Fig. 14. During evaporator-function operation, flow
is straight through the nipple and into each evaporator circuit.
Flow continues through the parallel evaporator circuits and into
the vapor header.
Fig. 13 —
Typical Unit Piping Schematic with TXV Valves on the Indoor Coils
COMPRESSOR
ACCUMULATOR
HPS
COMPRESSOR
ACCUMULATOR
HPS
Filter
Drier
2B
1B
LPS/LOC
Acutrol
DFT 1
Cooling Liquid Lines
DFT 2
2A
1A
1D
2D
Outdoor Coil
Indoor Coil
Comp 2
Comp 1
2C
1C
Strainer
Heating Mode Liquid Lines
Acutrol
Reversing
Valve
Reversing
Valve
Summary of Contents for WeatherMaker 50TCQ 17-24 Series
Page 35: ...35 Fig 53 RTU Open Overlay for Economizer Wiring ...
Page 36: ...36 Fig 54 VFD Overlay for W2770 Controller Wiring ...
Page 68: ...68 Fig B 50TCQD17 24 Control Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 69: ...69 Fig C 50TCQD17 24 Power Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 70: ...70 Fig D 50TCQD17 24 Power Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 71: ...71 Fig E RTU Open Overlay APPENDIX D WIRING DIAGRAMS ...
Page 72: ...72 Fig F PremierLink Overlay APPENDIX D WIRING DIAGRAMS ...