Others; Gas Leak Test; Earthing; Finishing - Toshiba HWS-455H-E Installation Manual

Gas Leak Test

• Check the fl are nut connections for the gas leak with a gas leak detector or
soap water.

Earthing

Connect the earth wire properly following applicable technical standards.
Connecting the earth wire is essential to preventing electric shock and to
reducing noise and electrical charges on the outdoor unit surface due to the
high-frequency wave generated by the frequency converter (inverter) in the
outdoor unit.
If you touch the charged outdoor unit without an earth wire, you may
experience an electric shock.

Finishing

After the refrigerant pipe, Hydro / Outdoor connecting wires have been
connected, cover them with fi nishing tape and clamp them to the wall with
off-the-shelf support brackets or their equivalent.
Keep the power wires and Hydro / outdoor connecting wires off the valve on
the gas side or pipes that have no heat insulator.

OTHERS

OTHERS
Check places for
the hydro unit.
Check places for
the outdoor unit.
11

Test run

• Turn on the leakage breaker at least 12 hours before starting a test run to
protect the compressor during startup.
• Check the following before starting a test run:
• That all pipes are connected securely without leaks.
• That the valve is open.
If the compressor is operated with the valve closed, the outdoor unit will
become overpressurized, which may damage the compressor or other
components.
If there is a leak at a connection, air can be sucked in and the internal
pressure further increases, which may cause a burst or injury.
• Operate the air to water heat pump in the correct procedure as specifi ed
in the Owner's Manual.
Please refer to the Hydro unit installation manual for the detail of the test
run.

Annual maintenance

• For an air to water heat pump system that is operated on a regular basis,
cleaning and maintenance of the Hydro / outdoor units are strongly
recommended.
As a general rule, if an Hydro unit is operated for about 8 hours daily, the
Hydro / outdoor units will need to be cleaned at least once every
3 months.
This cleaning and maintenance should be carried out by a qualifi ed
service person.
Failure to clean the Hydro / outdoor units regularly will result in poor
performance, icing, water leaking and even compressor failure.
Air to water heat pump
operating conditions
For proper performance, operate the air to water heat pump under the
following temperature conditions:
Cooling operation
Heating operation
Hot water operation
If air to water heat pump is used outside of the above conditions, safety
protection may work.
* Heater operation in more than 35 °C
EN
EN
FR
IT
DE
PT
PL
CZ
RU
CR
HU
TR
NL
GR
SV
10 °C to 43 °C
-20 °C to 25 °C
FI
-20 °C to 43 °C*
NO
DK
RO
BG
EE
LV
SK
SI