RHOSS ELECTA Series, Instructions For Use Manual, Page: 79 / 344

7.7 INVERTER FREQUENCY MODULATION
The output signal from the USER INTERFACE controlling the inverter fre-
quency, is based on the error between:
- temperature of the requested water from the heat pump (parameter
231 ):
• in air conditioning, it is calculated according to the active climatic curve
• in DHW production, it is set through parameter 128 .
- temperature of the delivery water from the heat pump (parameter 109 ).
Note:
The output signal from the USER INTERFACE parameter 235 represents
the requested inverter frequency; the power supply frequency of the com-
pressor is further controlled by the TERMINAL BLOCK of the heat pump,
according to compressor operational limits. The value of instantaneous
frequency can be read on the display 2 digits on the card PCB principal.
7.8 OUTDOOR AIR TEMPERATURE SENSOR
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The heat pump has an "External temperature" sensor found on the oppo-
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the unit; this variation requires the following operations:
- purchase the “KEAP” accessory (external air remote probe)
- disconnect connector “Air. Ext. S.” and connect the KEAP in clamps 1
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7.9 STORAGE DHW HEATING
The eventual availability of DHW through connection of the HP to a speci-
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USER INTERFA-
CE
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The request for DHW can occur in the following ways:
Par 123=0
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clamps 5-6 of the TERMINAL BLOCK. In this instance the production will
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and will resume when the water temperature will have a value less than
par. 126 – par. 127
Par 123=1 DHW request if between terminals 5-6 of the TERMINAL
BLOCK there is a closed contact. With this solution one should install a
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clamps.
Par 123=2 DHW request if between terminals 5-6 of the TERMINAL
BLOCK there is an open contact. With this solution one should install a
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clamps.
If setting of Parameter 112=ON (default value), with DHW request, a po-
wered output “3W.V.SANITARY” activates (clamp H, TERMINAL BLOCK)
and Pump 1 will activate when the delay time set in parameter
130 will
have lapsed.
Nota:
The demand for DHW has prio-
rity on air conditioning. To limit
the priority of DHW on air con-
ditioning, according to a daily
time band, contact an authori-
zed service centre. In addition,
a thermal disinfection system
for the storage of domestic hot
water (DHW) is not active.
To activate the scheduled
thermal disinfection for DHW
storage, contact the approved
service centre.
For these functions also refer
to what is reported in the Ap-
pendices.
KEAP
79
Section I :: User EN