Riello NexPro Plus, Руководство по установке и обслуживанию

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21
STARTING AND USE
The dynamic setpoint is enabled only for heat pump operation.
Dynamic Set Point parameters:
− H34 slope of the compensation line (value between 0.5
and 2).
− H35 outdoor air temperature above which the compen-
sation starts (value between 15 e 25).
− H36 excursion of outdoor air temperature on which the
set point works (value between 5 and 10).
Example:
Ut1=60°C; H34=1; H35=20°C; H36=10°C
When the dynamic set point is enabled (H33=1), we can have
three cases:
1st Case
Tair <= H35 In that case Dynamic Set point = Ut1
2nd Case
H35 <Tair < (H35+H36) In that case Dynamic Set point= Ut1-[(Tair-
H35)*H34]
3rd Case
Tair > (H35+H36) In that case Dynamic Set point = Ut1-[H36*H34]
External air
(S02)
Setpoint
15
48
50
52
54
56
58
57
60
16 17 18 19
20
22
23
24 26 28 30 32
H36
Ut1
H35
3 .19 Unit remote ON/OFF function
IT is possible to set the priority of activation of the various func-
tions, usually according to cost effectiveness. For example, if the
unit is integrated in a solar system, For example, if the unit is
integrated in a solar system, it can be advantageous to use solar
energy as first resource, and when its contribution is no longer
considerable, activate the heat pump heater.
For this purpose, the unit has a digital NO input (volt-free con-
tact) available on the basic board between the TIMERGND termi-
nals, enabled to receive information from an external source, or
more generally from a timer.
9
It is possible to enable/disable the this function using the
binary parameter H70.
H70 = 0 Function disabled
H70 = 1 Function enabled
When the function is enabled (H70=1), by pressing [FUNCTION]
key two conditions occur:
− If the contact (TIMER-GND) is OPEN the unit is OFF waiting
to receive an input for starting. This condition is shown
on the display by alternating the water temperature with
label OFF. Led 1 is flashing.
− If the contact (TIMER-GND) is CLOSED, the unit has received
an input for starting and starts normally. Led 1 is lit.
NOTE: in the navigation diagram, the machine status from ex-
ternal contact can be displayed near parameter Id4 . (1= on
hold; 0= enabled) .
3 .20 Electric heating element function from remote
ON/OFF
If you have a twin rate tariff and a suitable counter, you may
decide to use the electrical heater only in the hours where the
use of electricity is more convenient.
For this purpose, the unit has a N.O. digital input (terminals RES-
GND) to enable / disable only the heater.
9
it is possible to enable / disable the Remote ON OFF setting
the parameter H60. The function integration with electrical
heater parameter H50=1 must be activated.
H60 = 0 Function disabled
H60 = 1 Function enabled
With function enabled (H60=1):
− if contact RES-GND is OPEN (equivalent to Convenient
two-hourly rate condition), the unit usually operates in
AUTO mode, in order to activate the compressor or the
heating element according to its calculation algorithm.
LED L8 is OFF.
− If the input RES-GND is closed (equivalent to the non con-
venient use of electricity), the unit works normally with
compressor only and the electrical heater never starts. In
this mode any intervention request of the heating ele-
ment is indicated by LED L8 flashing (showing that the
heating element activation request is in progress).
NOTE: in the navigation diagram, the heating element status
from external contact can be displayed near parameter Id3 . (1=
enabled; 0=on hold) .
3 .21 Fan management (menu Fan)
The fan status is connected to the compressor one: the fan is
activated if the compressor is activated.
Parameter F02,define the type of regulation:
− F02 = 0 ON/OFF regulation;
− F02 = 1 modulating regulation.
Modulating regulation (F02=1) parameters:
− F03 Minimum fan proportional speed. % of maximum
voltage.
− F04 Maximum fan proportional speed. % of maximum
voltage.
− F05 Temperature for minimum fan speed. It represents
the air temperature above which the fan runs at mini-
mum speed.
− F06 Temperature for minimum fan speed. It represents
the differential respect to F5, below which the fan run
maximum speed (the colder the air, the greater the fan
speed).
It is also possible, using parameter F07; to fix a value of water
temperature, below which the fan ignores the adjustment, fol-
lowing the speed fixed to the parameter F04.