Hitachi AF-BCK-01 Installation And Operation Manual page 15

6.4. COmmON WIRING

CAUTION:
All the field wiring and electrical components must comply with local codes.
6.4.1. ELECTRICAL WIRING bETWEEN AQUAFREE
AND bOILER COmbINATION kIT.
Connect the electrical wires between the AquaFREE, the Boiler
−
Combination Kit and the Boiler, as shown in the next diagram.
Follow local codes and regulations when performing electrical wiring.
−
Use twist pair wire (more than 0.75 mm²) for operation wiring
−
between AquaFREE and Boiler Combination Kit.
Use 2-core wire for the operating line (Do not use wire with more
−
than 3 cores).
Use shielded wires for intermediate wiring to protect the units from
−
noise obstacle at length of less than 300m and size complied with
local code.
Single phase connection:

Boiler
Electrical connections
The recommended breaker sizes are shown in Table of electrical
−
data and recommended Wiring, Breaker
Size/1 O.U.
In the case that a conduit tube for field-wiring is not used, fix rubber
−
bushes with adhesive on the panel.
All the field wiring and equipment must comply with local and
−
international codes.
Indoor unit (AquaFREE)
BCK
15
Outdoor Unit