Connecting Indoor Units - Technibel GRF148MR5I Technical & Service Manual

G
Install the indoor unit more than 1 meter away from any
antenna or power lines or connecting wires used for tele-
vision, radio, telephone, security system, or intercom.
Electrical noise from any of these sources may affect
operation.
G
install in a sturdy manner to avoid increased operating
noise.
Table 3
Max. Allowable
Tubing Length
Model per unit
(m)
GRF148 20
GRF198 25
GRF248 25
GRF318 30
* If total tubing length becomes 45 to 60 m (max.) or 45 to 70 m (max.), charge additional refrigerant (R410A) by 20 g/m.
No additional charge of compressor oil is necessary.

2-2. Connecting Indoor Units

(1) Connecting indoor unit for GRF148MR5I
Outdoor unit
B
ø9.52
A
ø9.52
(2) Connecting indoor unit for GRF198MR5I
(A)
Outdoor unit
B
ø9.52
A
ø9.52
(B)
Outdoor unit
B
ø9.52
A
ø9.52
Flare ø9.52
A joint for connecting tubes of
different sizes
(ø9.52
Max. Allowable Total
Tubing Length
at shipment
(L1+L2) or (L1+L2+L3)
or (L1+L2+L3+L4)
(m)
30 (L1+L2)
45 (L1+L2)
45 (L1+L2+L3+L4)
45 (L1+L2+L3+L4)
ø6.35
ø6.35
ø6.35
ø6.35
ø6.35
ø6.35
Union ø12.70
ø12.70) Supplied Reducer
Limit of Limit of Elevation
Total Tubing Length
(L1+L2) or (L1+L2+L3) (H1, H2, H3, H4)
or (L1+L2+L3+L4)
(m)
30 (L1+L2)
45 (L1+L2)
60 (L1+L2+L3+L4)
70 (L1+L2+L3+L4)
Indoor unit
ø9.52
(MCAF78/98/128MR5I)
ø9.52
(MCAF78/98/128MR5I)
Fig. 4a
Indoor unit
ø9.52
(MCAF78/98/128MR5I)
ø9.52
(MCAF78/98/128MR5I)
Fig. 4b
Indoor unit
ø9.52
(MCAF78/98/128MR5I)
ø12.70
(MCAF188R5I)
Fig. 4c
5
Required Amount
Difference of Additional
Refrigerant
(m) (g/m)
15 –
15 –
15 20
15 20
unit: mm
*