Mitsubishi MT300 User Manual

Installation
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77
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'10 • HM-T-149
Filling the hot water coil
Thehotwatercoilislledbyopeningahotwatertap.
Commissioning
Outdoor unit
1. Check that the miniature circuit-breaker (FA2) in indoor
unit is on.
Indoor unit
1. Check that the temperature limiter (FD1) has not tripped.
2. Switch on the main circuit breaker and check that the
miniaturecircuitbreaker(FA1,FA3)inindoorunitison.
3. Setswitch(SF1)to“1”(theswitchshouldbeswitchedon
for 6 hours before the compressor can be started).
Whenswitch(SF1)is setto“0”- wait at least1minute
beforesettingitbackto“1”.
4. Selectoperatingmode“Add.heatonly”byholdinginthe
operating mode button for 7 seconds.
5. Set the date and time in Menu 7.1 and 7.2.
6. Set the language in Menu 8.1.2.
7. Select“Service”inMenu8.1.1.
8. Select additional heat source type in Menu 9.2.8.
9. Setthefusesizeonknob(R24).CheckthevalueinMenu
8.3.1.
10.Setthemaximmersionheateroutputonknob(R25).
Check the value in Menu 8.3.2.
11. Select the desired heating curve in Menu 2.1.2 and set the
parallel offset using the knob.
12. Check that the hot water temperature in Menu 1.0 exceeds
25 °C.
13.Whenpoint12hasbeencarriedout,selectoperatingmode
“Auto”.
The heat pump starts 30 minutes after the outdoor unit is
powered if there is a heat demand.
Setting system flow heating
1. Ensure that the heat pump produces heating for the climate
system.
2. Select“On”inMenu9.6.2.
3. Select the value in Menu 9.6.1. according to the table
below.
FDCW71 FDCW100 FDCW140
55 40 55
NOTE
If it is not shown, set the Menu 8.1.1 to “ Service”.
4. Check the supply and return line temperatures in Menu 2.5.
Adjust the circulation pump speed in Menu 2.1.5 so that the
difference between these temperatures is according to the
diagram below.
5. Select“Off”inMenu9.6.2.
Difference between supply and return water temperatur
0
2
4
6
8
10
12
-15 -10 -5 0 5 10 15 20 25
∆ T (°C)
(°C)
Outdoor air temperature
$
Under floor heating application
Radiator/Fan coil application
Setting system flow cooling
The factory setting 100% in Menu 2.2.5 is recommended.
Commissioning Hydrolution without outdoor
unit connected
1. Check that the temperature limiter (FD1) has not tripped.
2. Switch on the main circuit breaker and check that the
miniature circuit breaker (FA1) in indoor unit is on.
3. Setswitch(SF1)to“1”.
4. Selectoperatingmode“Add.heatonly”byholdinginthe
operating mode button for 7 seconds.
5. Set the date and time in Menu 7.1 and 7.2.
6. Select“Service”inMenu8.1.1.
7. Select addition type in Menu 9.2.8.
8. Setthefusesizeonknob(R24).CheckthevalueinMenu
8.3.1.
9. Setthemaximmersionheateroutputonknob(R25).
Check
the value in Menu 8.3.2.
10. Select the desired heating curve in Menu 2.1.2 and set the
parallel offset using the knob.
Start-up and inspection
NOTE
Be sure to bleed air in the climate system completely.
The circulation pump may become damaged.
NOTE
Do not turn the switch (SF1) to 1 or until the
boiler has been lled with water.
The circulation pump and immersion heater
may become damaged.

Mitsubishi MT300 Specifications

General

Brand	Mitsubishi
Model	MT300
Category	Heat Pump
Language	English