Hitachi YUTAKI S80 Series - Flexible Water Pipes Considerations

24 PMML0291A rev.2 - 09/2014
INSTALLATION
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Factory-supplied domestic hot water tank
components
Accessory Image Qty. Purpose
Flexible water
pipe (3/4”)
2
Heating coil pipes (For con-
nection between indoor unit
and domestic hot water tank)
Flexible water
pipe (3/4”)
2
DHW pipes (For tank and
DHW connection)
Bolts M10 4
For xing between indoor unit
and DHW tank
Gasket 8+1
Two gasket for each exible
water pipe.
One additional as spare part
Wall xing
accessory
2
For xing the DHW tank to the
wall.
Installation
manual
1
Installation and operation unit
instructions
Declaration of
conformity
- 1 -
NOTE
• The previous accessories are supplied inside the DHW tank,
and are accessible removing the tank lower front cover.
• If some of these accessories are not packed with the tank
or any damage to the tank is detected, please contact your
dealer.
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DHW tank main parts (Descriptions)
No. Part
1
8
3
4
9
7
2
5
6
1 Tank upper front cover
2 Tank lower front cover
3 Tank left cover
4 Tank right cover
5 Tank upper cover
6 Tank back cover
7 User’s interface service cover
8 LCD user’s interface
9 Pressure gauge
7.1.2 Flexible water pipes considerations
Process for water pipes connection (to avoid water leakage).
1 Put a gasket inside the nut.
Gasket
nut
a)
b)
c)
2 Check that the nut turn free.
3 Be sure that the tube is aligned with the connection.
4 IMPORTANT! Be sure that the gasket is in contact and is
seating uniformly with the connection.
5 By hand rotates smoothly the nut and screw it into the connec-
tion. The screwing by hand not have to offer much resistance,
so if this happen, loosens the nut and check that the water
tube and the gasket position are correct and proceed again
with point 3 and 4.
6 With a spanner nishes the screwing of the nut insuring the
sealing but without damaging the gasket.
NOTE
• There’s one spare gasket for the DHW connections.
• Be careful with the exible water pipes insulation protection.
Sharp edges of the units could damage it when installing the
pipes.
CAUTION
• Always bend the water tubes with a radius > 90 mm.
R>90mm
• The tube will not spring back.
• Don’t install the stainless steel tube in a twisted position.
• Don’t bend these stainless steel tube more often than re-
quired to avoid breaking it.