FireBird Enviroair 11kW, Installation & Operation Manual

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7
• Verify, in accordance with the manuals which appear in
the unit, that all the information required for the correct
installation of the system is included. If this is not the case,
contact your distributor.
• Firebird pursues a policy of continuous improvement in
product design and performance. The right is therefore
reserved to vary specifications without notice.
• Firebird cannot anticipate every possible circumstance that
might involve a potential hazard.
• This air to water heat pump has been designed for standard
water heating for human beings only. Do not use this for other
purposes such as for drying clothes, heating foods or for any
other heating process (except swimming pool).
• No part of this manual may be reproduced without
written permission.
• If you have any questions, contact Firebird Products Ltd.
• Check and make sure that the explanations of each
part of this manual correspond to your air to water
heat pump model.
• Refer to the models codification to confirm the main
characteristics of your system.
• Signal words (NOTE, DANGER and CAUTION) are used
to identify levels of hazard seriousness. Definitions for
identifying hazard levels are provided in initial pages of this
document.
• The operation modes of these units are controlled by
the unit controller.
• This manual should be considered as a permanent part of the
air to water heat pump. It gives a common description of and
information for this air to water heat pump which you operate
as well as for other models.
• Keep the water temperature of the system above the
freezing temperature.
CAUTION
Do not pass cables through the ventilation hole.
DANGER
Pressure Vessel and Safety Device: This heat pump is equipped
with a high pressure vessel under PED (Pressure Equipment
Directive). The pressure vessel has been designed and tested
before shipment according to PED. Also, in order to prevent the
system from an abnormal pressure, a high pressure switch,
which needs no field adjustment, is utilised in the refrigeration
system. Therefore, this heat pump is protected from abnormal
pressures. However, if abnormally high pressure is applied to the
refrigeration cycle including the high pressure vessel(s), it will
result in serious injury or death due to explosion of the pressure
vessel. Do not apply a pressure higher than the following
pressure to the system, by modifying or changing the high
pressure switch.
CAUTION
Start-up and Operation: Check to ensure that all the stop valves
are fully opened and no obstacle exists at the inlet / outlet sides
before start-up and during the operation.
Maintenance: Periodically check the high pressure side
pressure. If the pressure is higher than the maximum allowable
pressure, stop the system and clean the heat exchanger or
remove the cause.
Maximum Allowable Pressure and High Pressure Cut-out Value:
Refrigerant
Maximum Allowable
Pressure (MPa)
High Pressure Switch
Cut-out Value (MPa)
R410A 4.15 4.00 ~ 4.10
NOTE
The label for the vessel under PED are attached on the high
pressure vessel. The pressure vessel capacity and vessel
category are indicated on the vessel.
NOTE
The high pressure switch is indicated on the electrical wiring
diagram in the outdoor unit as PSH connected to printed circuit
board (PCB1) in the outdoor unit.
DANGER
Do not change the high-pressure switch locally or change the
high pressure cut-out set value locally. If changed, it will cause
serious injury or death due to explosion.
Do not attempt to turn service valve rod beyond its stop.
2.3 Important Notice