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6.3 Installation foundation
6.3.1 Base structure
Outdoor unit base structure design should take account of the
following considerations:
1) A solid base prevents excess vibration and noise. Outdoor
unit bases should be constructed on solid ground or on
structures of sufficient strength to support the units’ weight.
2) Bases should be at least 200mm high to provide sufficient
access for installation of piping. Snow protection should also be
considered for the base height.
3) Either steel or concrete bases may be suitable.
4) A typical concrete base design is shown in Fig. 6-4. A typical
concrete specification is 1 part cement, 2 parts sand and 4 parts
crushed stone with steel reinforcing bar. The edges of the base
should be chamfered.
5) To ensure that all contact points are equally secure, bases
should be completely level. Base design should ensure that the
points on the units’ bases designed for weight-bearing support
are fully supported.
ŐPP
Ő
200mm
Rubber anti-vibration pads
Solid ground / surface
Outdoor unit
Concrete base
h≥200mm
Fig.6-4 Front view of base structure
6.3.2 Location drawing of installation
foundation of the unit: (unit: mm)
1) If the unit is located so high that it is inconvenient for
maintenance personnel to conduct maintenance, the suitable
scaffold can be provided around the unit.
2) The scaffold must be able to bear the weight of maintenance
personnel and maintenance facilities.
3) The bottom frame of the unit is not allowed to be embedded
into the concrete of installation foundation.
4) A drainage ditch should be provided to allow drainage of
condensate that may form on the heat exchangers when
the units are running in heating mode. The drainage should
ensure that condensate is directed away from roadways and
footpaths, especially in locations where the climate is such that
condensate may freeze.
(unit: mm)
Inlet and outlet
pipe side
Drainage
channel
Anchor bolt
Electric
control box
side
Fig. 6-5 Top view of schematic diagram of installation
dimension of 65KW
Inlet and outlet
pipe side
Drainage
channel
Anchor bolt
Electric
control box
side
(unit: mm)
Fig. 6-6 Top view of schematic diagram of installation
dimension of 110KW
6.4 Installation of damping devices
6.4.1 Damping devices must be provided
between the unit and its foundation.
By means of the Φ15mm diameter installation holes on the
steel frame of the unit base, the unit can be fastened on
the foundation through the spring damper. See Fig.6-5, 6-6
(Schematic diagram of installation dimension of the unit) for
details about center distance of the installation holes. The
damper does not go with the unit, and the user can select the
damper according to the relevant requirements. When the unit
is installed on the high roof or the area sensitive to vibration,
please consult the relevant persons before selecting the
damper.
6.4.2 Installation steps of the damper
Step 1. Make sure that the flatness of the concrete foundation is
within ±3mm, and then place the unit on the cushion block.
Step 2. Raise the unit to the height suitable for installation of the
damping device.
Step 3. Remove the clamp nuts of the damper. Place the unit on
the damper, and align the fixing bolt holes of the damper with
the fixing holes on the unit base.
Step 4. Return the clamp nuts of the damper to the fixing holes
on the unit base, and tighten them into the damper.
Step 5. Adjust the operational height of the damper base, and
screw down the leveling bolts. Tighten the bolts by one circle to
ensure equal height adjustment variance of the damper.
Step 6. The lock bolts can be tightened after the correct
operational height is reached.
Содержание KEM-HT-65 DRS5
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