D.C. Inverter Multi VRF Modular
28
Fig.33
Total capacity of downstream indoor
unit(s) (X)
(4) Manifold is isolated by insulating material that can bear 120
℃
or higher temperature.
Manifold attached foam can not be taken as insulating material.
4.3.3 Thermal insulation for pipeline
(1) For multi VRF system, every copper pipe should be labled so as to avoild misconnection.
(2) At the manifold inlet, at least leave 500mm straight pipe section, and for FQ04 manifold,
keep it at least 800mm.
(3) Thermal insulation for pipeline
1) To avoid condensate or water leakage on connecting pipe, the gas pipe and liquid pipe
must be wrapped with thermal insulating material and adhesive pipe for insulation from
the air.
2) For heat pump unit, liquid pipe should bear 70
℃
or above, and gas pipe should bear
120
℃
or above. For cooling only unit,both liquid pipe and gas pipe should bear 70
℃
or above. Example: Polyethylene foam can bear 120
℃
above and foaming
polyethylene can bear 100
℃
above.
3) Joints at indoor and outdoor units should be wrapped with insulating material and leave
no clearance between pipe and wall. See Fig.32.
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