Hitachi RAM-55QH4, Service Manual

Page: 19 / 109

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Above 100mm
Drain hole
Bushing
Outer diameter above 16mm
b
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Condensed water disposal of outdoor unit
When Using and Installing in Cold Areas
There is holes on the base of outdoor unit for condensed water to exhaust.
To lead condensed water to the drain hole, place the outdoor unit on the mounting stand (optional) or on blocks to raise its
level more than 100mm from the ground surface. Connect the drain pipe as shown in the figure. Cover two other water
drain holes with the bushings included. (To insall a bushing, push in both ends of the bushing so that it aligns with the drain
hole.)
When connecting the drain pipe, make sure that the bushing does not lift off or deviate from the base.
1. Remove flare nut from service valve.
4. Perform air purge and gas leak inspection.
2. Apply refrigerant oil to flare nut sections of servicevalve and pipings.
5. Wrap the provided insulating material around sidepiping using vinyl tape.
3. Match center of piping to large diameter side service valve and tank assembly, and tighten flarenut first by hand,
then securely tighten using torque wrench.
Install the outdoor unit on a stable, flat surface and check to see that the condensed water drains.
For more details, refer to the Installation Manual for Cold Areas.
When the air conditioner is used in low temperature and in snowy conditions, water from the heat exchanger may freeze
on the base surface to cause poor drainage. When using the air conditioner in such areas, do not install the bushings. Keep a
minimum of 250mm between the drain hole and the ground. When using the drain pipe, consult your sales agent.
Bushing b
Bushing b
Drain pipe
Drain hole
Push Push
a