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8
INSTALLATION INSTRUCTIONS FOR ELECTRICAL INSTALLER
8.1 General
Each module of the Remeha Gas 610 ECO is supplied
as standard with electronic operating and flame ionisation
safety controls with a specially designed microprocessor
at the heart of the system. Each boiler control regulates
one boiler module, thus guaranteeing a high degree of
safe operation.
Each boiler module is pre-wired as shown in the wiring
diagram in fig. 17. All external connections can be made
(separately per module) on the terminal strips (one low
voltage 24V AC and one mains voltage 230V AC) in the
control unit.
Each boiler module must be installed with its own two
pole isolating switch in the mains supply rated at 10 amps
(EN 60335-1, art. 7.12.2.).
g
Important!!
The subjects described in this
chapter apply to each boiler module.
8.2 Electrical specifications
8.2.1 Mains voltage
Each boiler module requires a 230V - 1 - 50Hz supply
rated at 10 amps with phase/ neutral/ earth. The boiler
modules are sensitive to phase/neutral and therefore
have a facility to ensure that phase and neutral are cor-
rectly connected. If phase and neutral are crossed, the
display will flash L-n / n-L alternately.
8.2.2 Control unit
Manufacturer
: Honeywell
Type
: MCBA 1458 D
Mains voltage : 230 V/50 Hz
Safety time
: 3 sec.
Each boiler module of the Remeha Gas 610 ECO has a
unique "boiler code". These codes, together with other
data as boiler type, counter data, etc., are stored in a
"code-key" that belongs to the boiler module. If the con-
trol unit is replaced this information remains
stored in the code-key.
Remeha Gas 610 ECO
fig. 13 Position code-key
8.2.3 Power consumption per module
Power con-
stand-by
sumption
Watt
2 x 6 sections
2 x 7 sections
2 x 8 sections
2 x 9 sections
table 09 Power consumption per module
Max boiler module start current: 4 amps (excluding a
"system pump" if connected to terminal block X27 con-
nections 9 and 10).
8.2.4 Fuse ratings
The circuit board on the control unit contains the fol-
lowing fuses:
F1 - 2 AF mains voltage fuse (automatic fuse)
F2 - 2 AT for gas valve multiblock
F3 - 2 AT for 24 V circuit
F10 - 2 AT for shunt pump
F11 - 1 AT for flue gas damper
F12 - 1 AT for butterfly valve
F13 - 2 AT for heating pump
F14 - 1 AT for external gas valve
22
part load
full load
Watt
Watt
12
65
12
100
12
96
12
105
347
490
620
842
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