Daikin GYEQ20AN Service Manual page 67

SiAUY361411EA
7 Installing the Outdoor Unit
Checklist for the completion of work
Confirm the following contents after the completion of work and adjust if required.
Check
The outdoor unit is installed outside the building.
The installation location of the outdoor unit does not resemble an indoor location, e.g. a balcony surrounded by
ventilation louvers.
The indoor and outdoor units are installed in locations capable of supporting their weight.
An appropriate distance is maintained between the outdoor unit and flammable materials.
The outdoor unit is installed so that exhaust gas from the unit does not leak into the building interior through
windows, intake and exhaust vents, piping leading to its interior, air vents, etc.
The indoor and outdoor units are not installed in locations where flammable gas may be generated, flow in,
build up, or leak, or where volatile flammable items may be handled.
Separate pipes are used for outdoor unit exhaust drain and for indoor unit drain.
The exhaust drain hose of the outdoor unit is securely installed to the destination.
The air inlet, exhaust outlet, and exhaust drain outlet of the outdoor unit are not blocked.
If you plan to discharge the outdoor unit exhaust drain into a drain container or ditch with a lid or to discharge
both the outdoor unit exhaust drain and indoor unit drain into the same place, the piping is configured so that
the exhaust gas contained in the exhaust drain is emitted into the atmosphere.
Rigid PVC drain pipes are used for the exhaust drain piping of the outdoor unit.
Drains flow smoothly.
Gas leak test for the fuel gas piping performed.
A reinforced gas hose is used for the fuel gas piping between the gas cock in front of the outdoor unit and the
outdoor unit.
White pipes (chrome plated steel pipes) are used for the fuel gas piping.
The outdoor unit, when installed on a vibration proof stand, shakes a lot at start-up. The reinforced gas hose is
laid out carefully.
The fuel gas type recorded on the outdoor unit and the gas type actually used are the same.
The pressure of the fuel gas is within the prescribed limit.
When installing the outdoor unit on the rooftop or at high elevations, provide a ladder and handrails in the
passage as well as fences and handrails around the unit in order to prevent falls.
The outdoor unit is securely fixed on a firm and level foundation using externally threaded mechanical anchor
bolts (M12), or anchor bolts with more than short-term load handling capacity.
The prescribed spaces are maintained for the ambient conditions in which the indoor and outdoor units are
installed.
The outdoor unit is not installed in a location where air or exhaust gas may blow against the windows and
garden plants of neighboring buildings when the unit is operating.
In areas that have strong winds, install the product so that the fan on the outdoor unit does not face the wind, or
take measures in advance to protect against the wind.
In areas that have snowfall in winter, take measures to protect the product from snow.
The external filter (standard accessory) is installed correctly.
Nitrogen gas was supplied when brazing the refrigerant piping.
The refrigerant piping has been fully evacuated.
Additional refrigerant has been charged in accordance with the length of the piping.
The volume of the refrigerant has been recorded. (
The refrigerant does not leak from the piping.
Additional refrigerant was charged using the procedure listed in the manual.
When installing the indoor unit, measures are taken to prevent the refrigerant gas concentration from reaching a
dangerous level even if a gas leak occurs.
To installers
(1) Explain the safety cautions to the customer.
(2) After the completion of installation work, give this manual to the customer.
Device Overview
Content
kg)
– 28 –
Installation Work Manual
0FGHP-EN0801 DGJ002
56