Mitsubishi Electric EHWT17D-MHEDW Data Book page 18

7
Water to Water Heat Pump (WTW)
Thermistor inputs
Name Terminal block Connector Item
TH1 — CN20
TH2 — CN21
THW1 — CNW12 1-2 Thermistor (Flow water temp.)
THW2 — CNW12 3-4 Thermistor (Return water temp.)
THW5A — CNW5 1-2
THW5B — CNW5 3-4
THW6 TBI.5 7-8
THW7 TBI.5 5-6
THW8 TBI.5 3-4
THW9 TBI.5 1-2
THW10 TBI.6 5-6
THWB1 TBI.6 7-8
Ensure to wire thermistor wirings away from the power line and/or OUT1 to 15 wirings.
*1. The maximum length of the thermistor wiring is 30 m. When the wires are wired to adjacent terminals, use ring
terminals and insulate the wires.
The length of the optional thermistors are 5 m. If you need to splice and extend the wirings, following points must be carried out.
1) Connect the wirings by soldering.
2) Insulate each connecting point against dust and water. Stranded wire should be processed with insulation-cov-
ered bar terminal (DIN46228-4 standard compatible type).
Thermistor (Room temp.) (Option)
Thermistor (Ref. liquid temp.)
Thermistor (DHW tank upper water temp.)
Thermistor (DHW tank lower water temp.)
— Thermistor (Zone1 flow water temp.) (Option) *1
— Thermistor (Zone1 return water temp.) (Option) *1
— Thermistor (Zone2 flow water temp.) (Option) *1
— Thermistor (Zone2 return water temp.) (Option) *1
— Thermistor (Mixing tank water temp.)
— Thermistor (Boiler flow water temp.) (Option) *1
Optional part model
PAC-SE41TS-E
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PAC-TH011-E
PAC-TH011-E
PAC-TH012HT-E
B-215