Electrical Connection - Mitsubishi Electric Hydrobox EHSC Series Installation Manual

4
Installation

4.4 Electrical Connection

All electrical work should be carried out by a suitably qualified technician. Failure
to comply with this could lead to electrocution, fire, and death. It will also invali-
date product warranty. All wiring should be according to national wiring regula-
tions.
Breaker abbreviation Meaning
ECB1 Earth leakage circuit breaker for booster heater
TB1 Terminal block 1
ECB1
E
TB1
B
D
C
A
< 1 phase >
<1 phase>
< Figure 4.4.1 >
<Figure 4.4.1>
ECB1
E
B
D
C
A
< 3 Phase >
<3 phase>
The hydrobox can be powered in two ways.
1. Power cable is run from the outdoor unit to the hydrobox.
2. Hydrobox has independent power source.
Connections should be made to the terminals indicated in the figures to the left
below depending on the phase.
Booster heater and immersion heater should be connected independently from
one another to dedicated power supplies.
Locally supplied wiring should be inserted through the inlets situated on the
base of the hydrobox. (Refer to <Table 3.3>.)
Wiring should be fed down the left hand side of the control and electrical box
and clamped in place using clips provided.
The wires should be fixed with the cable straps as below.
2 Output wires
3 Indoor-Outdoor wire
6 Power line (B.H.)
7 Signal input wires/ Wireless receiver
(option) wire (PAR-WR51R-E)
Connect the outdoor unit – hydrobox connecting cable to TB1.
Connect the power cable for the booster heater to ECB1.
• Make sure that ECB1 is ON.
8
7
en
1 2 3 4 5 6
16