Carbolite EZS Series - Manual (Page 23)

E range
MF65-1.01 23 23
8 FUSES & POWER SETTINGS
8.1 Fuses -
For wiring diagram information on F1 and F2 refer to Figure 7-1 page 22, for fuse values refer to Table
8-2 and Table 8-3.
Table 8-1. Fuse type information.
F1
Internal
supply fuses
Fitted to all E range models.
Each circuit has 2 fuses, in most cases fitted to the
EMC filter board.
32mm x 10mm type F
F2
Auxiliary
circuit fuses Fitted to all E range models.
In most cases fitted to the EMC filter board.
2 Amps
On board: 20mm x 5mm type F
Other: 32mm x 6mm type F
Customer
fuses Required to protect customer supply circuit and
lead.
See rating label for amperage; see
Table 8-2 and Table 8-3for
minimum supply and fuse ratings.
8.2 Table of internal fuse and external supply ratings.
All furnace models are single phase. Most models have internal fusing as in the Table 8-2 and
Table 8-3 below. Customers should check the rated amps in the tables below and make sure that
their electrical supply is rated accordingly (or at least the next fuse size up from the rated amps
table). Customers should also fit external fusing if their particular model of furnace does not have
internal fuses. The function of the customer’s (external) fuse is to protect the customer’s wiring.
All electrical connections other than where it is just a simple plug into an existing correctly rated
electrical supply must be carried out by an electrically competent person with the correct
certification to meet local legislation.
Table 8-2. Fuse ratings for 100 to 110V Supply Voltages
Model
Power
rating
(Watts)
Internal
supply
fuses F1
Internal
instrument
fuses F2
Furnace
rated amps
1-phase
100-110V
Single
Zone
EHA/EVA/EST/EVT 12/150 750 2x10A 2x2A 7A
EHA/EVA/EST/EVT 12/300 1480 2x16A 2x2A 14.5A
EHA/EVA/EST/EVT 12/450 1960 2x20A 2x2A 19A
EHA/EVA/EST/EVT 12/600 2480 2x25A 2x2A 24A
Three
Zone
EHC/EVC/EZS/EVZ 12/450 1960 2x20A 2x2A 19A
EHC/EVC/EZS/EVZ 12/600 2480 2x25A 2x2A 24A
Table 8-3. Fuse ratings for 200 to 240V Supply Voltages
Model
Power
rating
(Watts)
Internal
supply
fuses F1
Internal
instrument
fuses F2
Furnace
rated amps
1-phase
200-240V
Single
Zone
EHA/EVA/EST/EVT 12/150 750 2x4A 2x2A 3.5A
EHA/EVA/EST/EVT 12/300 1480 2x10A 2x2A 7.1A
EHA/EVA/EST/EVT 12/450 1960 2x10A 2x2A 9.5A
EHA/EVA/EST/EVT 12/600 2480 2x12A 2x2A 12A
Three
Zone
EHC/EVC/EZS/EVZ 12/450 1960 2x10A 2x2A 9.5A
EHC/EVC/EZS/EVZ 12/600
2480 2x12A 2x2A 12A