Mitsubishi Electric Climaveneta i-BX-004-013M Installation, Operation And Service Manual page 31

INSTALLER CONNECTIONS
SA6 Reduced electricity rate contact
Forced refilling of the reserve storage tanks can be activat-
ed based on different electricity rates during the day.
During reduced rate periods, the heat pump can be forced
on so as to heat the domestic hot water, where fitted.
Contact closed: forced operation during the reduced rate
period.
Contact open: heat pump operation disabled.
Description
Enable contact as:
- REDUCED RATE
- BOILER BACkUP
Enable the set point as:
- ECONOMY
- COMFORT
Set the value of the domestic hot
water ECONOMY set point
Set the value of the domestic hot
water COMFORT set point
SA5 - SA6 - SA7 Contact configurable as boiler
backup
If the boiler shuts down, the heat pump is activated in its
place, momentarily overriding the operating logic (supple-
mentary/replacement) so as to ensure heating is provided in
the building.
Boiler shutdown is signalled to the heat pump via the alarm
contact.
When the boiler contact is closed due to an active alarm, the
heat pump is started (compressor ON), even if its configura-
tion would otherwise keep the unit in standby.
The heat pump will provide heating in the building within the
operating limits described in the chapter on "Operating limits".
Contacts SA5 - SA6 - SA7 can be configured as "boiler back-
up" by modifying the following parameters accordingly:
Contact SA1 configured as "boiler backup"
Description
Enable contact as:
- DEMAND LIMIT
- BOILER BACkUP
- NIGHT LIMIT
The boiler backup function must be configured for only
one of the configurable contacts listed.
Contact SA6 configured as "boiler backup"
Description
Enable contact as:
- REDUCED RATE
- BOILER BACkUP
The boiler backup function must be configured for only
one of the configurable contacts listed.
Menu Parameter Value to be UOM
no. set
Mn01 019D REDUCED
RATE
Mn00 0015 ECONOMY
Mn00 0022 Example
47
Mn00 0023 Example
50
Menu Parameter Value to be
no. set
Mn01 019C BOILER
BACkUP
Menu Parameter Value to be UOM
no. set
Mn01 019D BOILER
BACkUP
31 25
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During operation at reduced electricity rate, contact closed,
-
the domestic hot water set point is 50°C, as shown in the
example, with the contact open it's 47°C.
°C
This allows operation at a higher temperature, within the
unit's operating limits, exploiting the lower electricity cost.
°C
U.M.
30 25
-
31 25
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I A
SA6
SA5
SA6
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