Appendix
Si39-303
146
General Information
7.12.3 Example 3:
Drain pipe trap shape defective
Situation
Indoor unit was fitted with a drain trap but a leak occurred during subsequent operation.
Source of
Problem and
Remedial Action
The trap was not properly shaped thus preventing it from functioning effectively as a trap and resulting in
drain leakage. The trap was reshaped and the fault disappeared.
Main Points
!
Duct types (40~125) require a drain trap.
Reason:There is resistance on the air inlet side caused by the heat exchanger and air filter and this in turn
creates negative pressure in relation to the atmospheric pressure on the discharge side. If there is no drain
trap then air will be drawn in from the drain pipe and the waste water splashed around giving rise to the risk
of water overflowing from the drain pan. To avoid this problem it is therefore necessary to design a trap
which takes account of the maximum negative pressure which is likely to be created on the suction side.
Summary of Contents for VRV II Series
Page 6: ...Si39 303 iv Table of Contents...
Page 31: ...Si39 303 Installation General Information 25 Flaring Procedure...
Page 124: ...Appendix Si39 303 118 General Information 3P114237A...
Page 141: ...Si39 303 Appendix General Information 135 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 4D040338A...
Page 142: ...Appendix Si39 303 136 General Information RXYQ14MY1B RXYQ16MY1B 4D040339A...
Page 144: ...Appendix Si39 303 138 General Information 7 11 Wiring Diagrams 7 11 1 Outdoor Unit RXYQ5MY1B...
Page 145: ...Si39 303 Appendix General Information 139 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 3D038582...
Page 146: ...Appendix Si39 303 140 General Information RXYQ14MY1B RXYQ16MY1B 3D038058...
Page 147: ...Si39 303 Appendix General Information 141 7 11 2 Field Wiring RXYQ5 16MY1B 3D040746...
Page 148: ...Appendix Si39 303 142 General Information RXYQ18 32MY1B 3D040747...
Page 149: ...Si39 303 Appendix General Information 143 RXYQ34 48MY1B 3D040748...
Page 158: ...Appendix Si39 303 152 General Information...
Page 180: ...Refrigerant Piping Si39 303 174 Installation Manual...
Page 226: ...Troubleshooting Si39 303 220 Operation Manual...