Installation Of Unit; General; Moving And Placing The Unit; Figure 1: Transport Configuration - Riello NXHP Series Installation, Operation And Maintenance Instructions

2 - INSTALLATION OF UNIT

2.1 - General

To install an unit NXHP 4-14 the following steps are requested
1. Place the unit
2. Make hydraulic connections to fill the system with water or
brine fluid
3. Make electrical connections
4. Check for water leaks and the water flow rate control
5. Verify that al the panels are in place and tightly secured in
place. Make sure that the fan blade protection is installed and
locked in place
6. Finally, make commissioning of the unit

2.2 - Moving and placing the unit

2.2.1 - Moving
See §1.2.1 Installation safety considerations.

Figure 1: Transport configuration

In the case of manual lifting of the unit, it is needed at least three
(3) persons for the 004 - 010 units and four (4) persons for the
012 - 014 units. In both situations, at least one person must lift
the fan side and the others must lift the compressor side. This
configuration permits to limit the load per lifter to 40 kg.

Figure 2: Offloading configuration

CAUTION: The lifting sling must always slide through the feet.
20

Figure 3: Forklift position

2.2.2 - Placing the unit
In case of extra-high units the machine environment must
permit easy access for maintenance operations.
Always refer to § 1.4. Dimensions and clearances to confirm
that there is adequate space for all connections and service
operations. For the centre of gravity coordinates, the position
of the unit mounting holes, and the weight distribution points,
refer to the certified dimensional drawing supplied with the
unit.
Typical applications of these units do not require earthquake
resistance. Earthquake resistance has not been verified.
CAUTION:
Only use slings at the designated lifting points (refer to Figure
2 to offload the unit).
Before siting the unit check that:
■ The permitted loading at the site is adequate or that appropriate
strengthening measures have been taken.
■ If the unit has to operate as a heat pump in temperatures below
0°C it must be raised at least 300 mm from the ground. This is
necessary to avoid ice build-up on the unit chassis and also to
permit correct unit operation in locations where the snow level
may reach this height.
■ The unit is installed level on an even surface (maximum
tolerance is 5 mm in both axes).
■ There is adequate space above the unit for air flow and to
ensure access to the components (see dimensional drawings).
■ The number of support points is adequate and that they are in
the right places.
■ It is mandatory to use 4 (four) bolts with sufficient strength in
the 4 (four) foot holes
■ The location is not subject to flooding.
■ For outdoor installations, where heavy snowfall is likely and
long periods of sub-zero temperatures are normal, provision
has to be made to prevent snow accumulating by raising the
unit above the height of drifts normally experienced. Baffles
may be necessary to deflect strong winds. They must not restrict
air flow into the unit.
■ OAT sensor, located on the coil, should not be exposed to the
sun or other heat sources.
■ If the unit is installed must be install above the ground, always
make sure to use adapted wall brackets and verify that the
weight allowed is higher than the unit weight.