Mitsubishi Electric CRHV-P600YA-HPB, Service Handbook

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[
VIII
Test Run Mode ]
- 106 -
HWE1312A GB
[3] Operating the Unit
1. Initial Operation
(1) Make sure the Run/Stop switch that controls the unit on the local control panel is switched off.
(3) Switch on the main power.
(4) Leave the main power switched on for at least 12 hours before turning on the Run/Stop switch that controls the
unit on the on-site control panel to warm up the compressor.
(5) Switch on the Run/Stop switch that controls the unit on the on-site control panel.
(2) Verify with the following checklist whether the heat source was properly selected.*
*Heat source selection checklist
*1 To prevent the heat exchanger from freezing, check that the concentration of brine is such that the freezing
temperature is -18°C or less before operation.
*2 Either water or brine can be used.
*3 Refer to page 10 for the installment position.
*4 Refer to page 67 and page 69 for details on heat source flow range.
*5 If using water as heat source, cut CN142D 1-3 (short circuit wire). After cutting CN142D 1-3, the power reset function is
enabled. To prevent the heat exchanger from freezing, make sure to check that the CN142D1-3 is cut if using water as
heat source.
Heat source fluid
Brine Brine
Water *2 Water *2
Below -18°C
freezing temp.
*1
freezing temp.
*1
Below -18°C
Heat source fluid inlet
Upper Side Lower Side Lower Side Upper Side
Install the
attached inlet/
outlet labels *3 Install the
attached inlet/
outlet labels *3
Heat source flow
range
*4
4.5 - 16.0 m
3
/h 2.0 - 16.0 m
3
/h 2.0 - 16.0 m
3
/h 7.0 - 16.0 m
3
/h
Connector
CN142D 1-3
*5
ON (Close) ON (Close) OFF (Close) OFF (Close)
START
NO
NO
NO
NO
YES
YES
YES
YES
Heat source inlet
temperature may
rise above 27 ºC
Verify the heat source usage temperature range
Heat source inlet
temperature may
rise above 27 ºC
Heat source inlet
temperature may
fall below 10 ºC
Heat source inlet
temperature may
fall below 15 ºC
Brine counter flow
(upper side of inlet) Brine parallel flow
(lower side of inlet) Water parallel flow
(lower side of inlet) Water counter flow
(upper side of inlet)