D.C. Inverter Multi-variable Modular
23
Within±30
℃
Within±7.5
Cut in the middle
Fig.31
Y-type manifold
Total capacity of downstream
indoor unit(s) (X)
Model
X 200
FQ01A/A
200 X 300
FQ01B/A
300 X 700
FQ02/A
700 X 1350
FQ03/A
1350 X
FQ04/A
(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.
Thermal insulating layer is required
to be wrapped at this part.
No clearance
Thermal insulating pipe
Fig.32
4) Manifold attached foam can not be taken as insulating material.
5) When wrapping the tape, the later circle should cover half of the former one. Don’t wrap the
