Ariston Fi7 16L FF, Service Manual

Page: 32 / 57

Technical Manual for DGI
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2.5.2 Install the fume exhaust hose - FF
z
The water heater must be mounted with fume exhaust hose
with ID
Φ
60mm. Please do not use the fume exhaust
hose with other diameter.
z
Fume exhaust hose can be extended to 3m/3elbows at
most.
z
Please calculate the hose length and required number of
elbows with below equation:
W=L+Mx2
L: Length of connected hose (m)
M: Number of elbows (pc)
If W>9, do not use the water heater.
z
Front fume exhaust section is indicated as one elbow
included in the total number of elbows.
z
Install the extended pipe with 1/50 inclination downward horizontally.
2.5.3 Install the fume exhaust hose - FFI
z
The water heater must be mounted with fume exhaust hose with ID
Φ
60mm/
Φ
100mm, and the
accessory pipe is 0.75m. Please do not use the fume exhaust hose with other diameter.
z
Fume exhaust hose can be extended to 2m/1bend at most.
z
Install the extended pipe with 1/50 inclination downward horizontally.
1
．
Typical installation case 2
．
Extend horizontally: L
≤
1m
3
．
Extend perpendicularly: L
≤
0.5m
4
．
Two elbows: the extended pipe is between
the two elbows, 0.15
≤L≤0.5m