Unit Installation - Hitachi YUTAKI S COMBI Series Instruction Manual

UNIT INSTALLATION


DSW15 & RSW2/ DSW16 & RSW1: Not used
Factory setting
(Do not change)

SSW1: Remote/Local
Factory setting
(Remote operation)
Local operation

SSW2: Heat/Cool
Factory setting
(Heat operation)
Cool and Heat operation in case of Local
5.6.3 LED indication
Name Colour
LED1 Green Power indication
LED2 Red Power indication
LED3 Red Heat pump operation (Thermo-ON/OFF)
LED4 Yellow Alarm (flickering with 1 sec interval)
LED5 Green Not used
LED6 Yellow H-Link transmission
LED7 Yellow H-Link transmission for unit controller
6 UNIT INSTALLATION
6.1 GENERAL NOTES
6.1.1 Selection of the installation location
The indoor unit of the split system with air to water heat pump
must be installed following these basic requirements:
• The indoor unit is intended to be installed in an indoor place
and for ambient temperatures ranging 5~30°C. The ambient
temperature around the indoor unit must be >5°C to prevent
water from freezing.
• The indoor unit is prepared to be floor mounted, so make sure
that selected floor is flat and is made of a non-combustible
surface, strong enough for supporting the indoor weight and
also the DHW tank's weight completely water filled.
• Be sure to maintain the recommended servicing space for
future unit servicing and guarantee enough air circulation
around the unit.
• Take into account that two shut-down valves (factory supplied)
must be installed at the indoor unit inlet/outlet connections.
• Take into account the space needed to install a necessary
pressure and temperature relief valve, which must be
installed at the DHW inlet connection of the tank (as close as
possible to the tank). 1 shut-down valve (field supplied) must
be also installed at the DHW outlet connection (See
"4.4 Space heating and DHW").
18 PMML0573 rev.1 - 07/2021
•
•
Remote
•
Local
•
Remote
Local
•
Heat
•
Cool
•
Heat
Cool
•
•
Indication
•
•
•
Keep water draining provisions. The safety valve and the air
purge are provided with a drain pipe which are located at the
bottom side of the unit.
For UK market models is strongly adviced that a safe place
is needed for discharging of high temperature and high pres-
sure water and steam from the pressure and temperature
relief valve. Refer to UK Building Requirements for a correct
safe drain.
If the event of installing the "Cooling kit" accessory, the
installer is responsible for proper installation and draining.
Protect the indoor unit against the entry of small animals
(like rats) which could making contact with the wires, the
drain pipe, electrical parts and may damage unprotected
parts, and at the worst, a fire will occur.
Install it in a no-frost environment.
Do not install the indoor unit in a location with very high
humidity.
Do not install the indoor unit where electromagnetic waves
are directly radiated to the electrical box.
Install the unit in a place where in case of water leakage,
any damage to the installation space cannot be produced.
Install noise filter when the power supply emits harmful
noises.
To avoid fire or explosion, do not install the unit in a
flammable environment.
The air to water heat pump must be installed by a service
technician. The installation must comply with local and
European regulations.
Try to avoid to put any objects or tools above the indoor unit.