Grant Aerona 3 HPID10R32, Инструкция по эксплуатации, Страница: 47 / 100

Page 47 Section 9: Commissioning
9.9 WEATHER COMPENSATION
During commissioning, the four climatic curve parameters MUST
be checked and the default values adjusted to suit the design
parameters for the system in question. Refer to Section 8.2.2 for
details.
Warm Weather Operation
If, during commissioning, the ambient air temperature is higher
than the air temperature setting (Te2) - parameter 2105 for the
climatic curve, the weather compensation function will NOT
allow the heat pump to operate to provide space heating.
To override this and force operation of the heat pump (e.g. to check
operation or commission the heat pump), parameter 2100 must be
set to 0. The weather compensation will be switched off and the
heat pump will operate at a fixed set point of 45°C irrespective of
the outdoor air temperature.
If weather compensation is required, parameter 2100 MUST be
reset to 1 once the heat pump has been commissioned or the
operation checked.
Alternatively, to operate the heat pump without touching the weather
compensation settings, set the system controls to provide a hot
water demand so that the heat pump operates to provide hot water
heating. Reset the hot water controls to the normal setting once the
heat pump has been commissioned or the operation checked.
9.10 FROST PROTECTION FUNCTION SETTING
Refer to Section 3.11.2 for details.
9.11 PUMP OPERATION AND AIR BLEEDING
FROM HEATING SYSTEM
The circulating pump can be operated to aid removal of the air from
the heating system.
To operate this function access the Terminal PCB.
• Check DIP SW4 is set to ‘OFF’.
! NOTE !
Dip switch positions:
Up:
ON
Down: OFF
• Press the Pump SW. Refer to Figure 9-2.
• Wait for a few seconds. The pump will start and each of the
six outer digital segments on the right-hand digit of the display
on the terminal PCB will light up sequentially during pump
operation.
• The pump stops automatically after 10 minutes of operation.
If all the air could not be released from the water circuit, press
Pump SW again (after the pump has stopped) to operate the
pump for another 10 minutes.
If you want to stop the pump before it stops automatically, press
Pump SW again.
Display
Pump SW.
Figure 9-2: Water loading and air bleeding in the hydraulic circuit
9.12 PUMP OUTPUT SETTING
The water pump is supplied factory set to maximum output (level
3), i.e. with both DIP SW5 and DIP SW6 in the OFF position (down
position). Refer to Figure 8-4.
It is unlikely that this level of output will be required, so it is
recommended that the pump output is reduced to either Level 2
(medium output) or Level 1 (minimum output) as required.
Refer to Section 8.3.6 for guidance on how to change the pump
output level.
During commissioning, check that the required flow rate is
produced in the heating system.
This will usually be indicated by achieving a temperature difference
between the heat pump flow and return of approximately 8°C when
the heating system is operating and up to temperature.
To determine the temperature difference, check the flow and return
temperatures using the ‘Monitor Display Function’ on either the
remote controller or Terminal PCB. Refer to Section 10.7 of these
installation Instructions for details of how to check the flow and
return water temperatures.
If necessary, the water pump output can be adjusted to achieve the
required temperature difference between flow and return when the
heat pump is operating. Refer to Section 8.3.6 for guidance on how
to change the pump output level.
9.13 FLOW REGULATOR
A flow regulator is supplied with the heat pump. This must be fitted
in the return pipe to the heat pump. Refer to Section 3.7, Figure
4-1 and Figure 9-3.
The flow regulator can be fitted vertically or horizontally but must
be installed such that the arrow on the brass body points in the
direction of flow.
For an accurate and stable reading, ensure that there is straight
pipe of at least 5 times the pipe diameter (i.e. for 28mm pipe: 5 x
28mm = 140mm) before the inlet to the regulating valve.
During system commissioning, the flow regulator must be set to
achieve the required flow rate in the primary circuit to the heat
pump.
The required flow rate will be dependent on the required heat
pump output (at design conditions) and the temperature differential
between the heat pump flow and return.