Hitachi airCore 700 Operation Installation Maintenance Manual page 24

4. Indoor Unit Installation
(1) How to put Nuts or Sling Bolts
Put nuts on each of the four hanging bolts, as shown in Fig.4.12.
(2) Hanging the Indoor Unit
* Hook suspension bracket to the nut and washer of each hanging bolt, as shown, starting at the
opposite side to service cover side.
* After checking that the nut and washer are correctly fixed by the retainers of the suspension
bracket of the service cover side to the nut and washer. (Put the sling bolts away from the unit
when hooking)
4.3.7 Adjusting of Unit Level
(1) Check to ensure that the foundation is flat, taking into account the maximum foundation gradient.
(2) The unit should be installed so that the rear side of the unit is slightly (0mm to 5mm) lower than the
front side, in order to avoid the incorrect position of the drain discharge.
NOTE:
•
Keep the unit as well as relevant equipment covered with the vinyl cover during installation work.
4.3.8 Connecting Supply Duct
(1) The supply duct should be connected with the indoor unit through canvas ducts, in order to avoid
abnormal sound vibration (Refer to Fig.4.15). The unit is equipped with a pre-drilled duct flange for
the supply duct connection.
(2) Attach the vibration proof rubber to Sling Bolt in order to avoid abnormal sound vibration.
(3) Duct material should be non-flammable material.
Washer
Nut
Fig.4.12 Sling Bolts and Nut
Suspension
Bracket
Nut &
Washer
Le Side
Fig.4.13 Hanging Indoor Unit
Fig.4.14 Foundation Gradient
Retaining Nut
Indoor Unit
Sling Bolt
Suspension Bracket
Right Side
(Service Cover Side)
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