Toshiba XXXXXXX(<SanSerif1>X/X)
– 6 –
Digital Inverter
Outdoor Unit Installation Manual
EN
4
SELECTION OF INSTALLATION
Before installation
Be careful to the following items before
installation.
Length of refrigerant pipe
* Caution at addition of refrigerant
When the total length of refrigerant pipe
exceeds 30 m, add 40 g /m of refrigerant and
the maximum total length of pipe is 50 m. (Max.
amount of additional refrigerant is 800 g.)
Charge the refrigerant accurately. Overcharge
may cause a serious trouble of compressor.
* Do not connect a refrigerant pipe shorter than
5 m
.
This may cause a malfunction of the
compressor or other devices.
Airtight test
1. Before starting an airtight test, further tighten
the spindle valves on the gas side and liquid
side.
2. Pressurize the pipe with nitrogen gas charged
from the service port to the design pressure
(4.15 Mpa) to conduct the airtight test.
3. After the airtight test is completed, evacuate the
nitrogen gas.
Air purge
• For air purge, use a vacuum pump.
• Do not use refrigerant charged in the outdoor
unit for air purge. (The refrigerant for air purge
is not contained in the outdoor unit.)
Electrical wiring
• Be sure to fix the power wires and indoor/
outdoor connecting wires with clamps so that
they do not contact with the cabinet, etc.
Earthing
WARNING
Make sure that proper earthing is provided.
Improper earthing may cause electric shock. For
how to check earthing, contact the dealer who
installed the air conditioner or a professional
installation company.
• Proper earthing can prevent charging of
electricity on the outdoor unit surface due to
high frequency of the frequency converter
(inverter) in the outdoor unit, as well as prevent
electric shock. If the outdoor unit is not properly
earthed, you may feel electric shock.
• Be sure to connect earth wire. (grounding
work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water
pipes, lightning rods or ground wires for
telephone wires.
Test Run
Turn on the leakage breaker at least 12 hours
before starting a test run to protect the
compressor during startup.
CAUTION
Incorrect work may result in a malfunction or
complaints of customers.
Length of refrigerant
pipe connected to
indoor/outdoor unit
Item
5 m to 30 m
Addition of refrigerant is
unnecessary at the local site.
*31 m to 50 m
<Addition of refrigerant>
Add 40 g of refrigerant for
every 1m of pipe which
exceeds 30 m.
6-EN
+00EH99861901_01EN_Outdoor6HP_IM.book Page 6 Monday, June 2, 2008 6:00 PM
