Gree GMV MTAC VRF Series, Service Manual

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Gree GMV MTAC VRF for North America
68
Dimension
A
Allow for wall finishing
B
Allow for floor finishing
Min.(mm/inch) Min. (mm/inch) Max(mm/inch)
No Accessories 6.4(1/4) 6.4(1/4) —
With Subbase 45(1-3/4) 89(3-1/2) 127(5)
With Lateral Duct 19(3/4) 6.4(1/4) —
(1) If more than one accessory is to be used, use the maximum dimension. If the wall thickness is more than
350mm(13-3/4in.) - (A +6.mm4(1/4in.)), a sleeve extension must be used.
(2) See the manual for detailed installation instructions.
4 Installation of Electronic Expansion Valve Assy (unit with
external EXV)
The EXV of indoor unit is built-in.
5 Installation of Refrigerant Pipeline
5.1 Allowable Length and Height Difference of Connection Pipe
Y type branch joint is adopted to connect indoor and outdoor units. Connecting method is
shown in the figure below:
NOTICE!
Equivalent length of one Y-type branch is 0.5m(1-5/8feet).
le Length and Height Difference of Connection Pipe
Piping parameters of GMV-12WP/A-T(U):
—
Allowable value
Fitting pipe
m feet
Total length (actual length) of fitting pipe 30 98-3/8 L1+a+b
Length of farthest fitting pipe (m)
Actual length 30 98-3/8
L1+b
Equivalent length 30.5 100-1/8
From the 1
st
branch to the farthest indoor pipe 15 49-2/8 b
Height difference between ODU and IDU
ODU at upper side 15 49-2/8
—
ODU at lower side 15 49-2/8
—
Height difference between IDUs 10 32-6/8
—