0020239568_03 Ultimate 3 Installation and maintenance instructions 7
3 Technical data
Technical data – General
ULTIMATE
3 25r -A (H-
GB)
Gas category
I
2H
Diameter of the gas pipe
1/2 inch
Diameter of the heating
connections
3/4 inch
Expansion relief valve con-
nection pipe (min.)
15 mm
Condensate discharge
pipe (min.)
21.5 mm
G20 gas supply pressure
2.0 kPa
(20.0 mbar)
Gas flow at P max. – do-
mestic hot water (G20)
3.2 m³/h
Gas flow at P max. – heat-
ing mode (G20)
2.7 m³/h
Gas flow at P min. (G20)
0.648 m³/h
CE number (PIN)
CE-
0063CP3646
SAP 2009/2012 annual effi-
ciency (%)
89.6
Flue gas mass flow rate in
heating mode at P min.
2.81 g/s
Flue gas mass flow rate in
heating mode at P max.
11.5 g/s
Flue gas mass flow rate in
domestic hot water mode
at P max.
13.8 g/s
Flue gas temperature (80
°C/60 °C) at P max.
77 ℃
Flue gas temperature (80
°C/60 °C) at P min.
55 ℃
Flue gas temperature (50
°C/30 °C) at P max.
62 ℃
Flue gas temperature (50
°C/30 °C) at P min.
35 ℃
Flue gas temperature in
domestic hot water mode
68 ℃
Flue gas temperature when
overheating
95 ℃
Released system types
C13, C33,
C43, C53
Nominal efficiency at 80/60
°C
98.8 %
Nominal efficiency at
50/30 °C
104.0 %
Nominal efficiency at
40/30 °C
106.0 %
Nominal efficiency in par-
tial load operation (30%) at
40/30 °C
109.7 %
NOx class
5
Product dimensions, width
375 mm
Product dimensions,
height
602 mm
Net weight
22 kg
Weight when filled with
water
26 kg
Technical data – G20 power/load G20
ULTIMATE
3 25r -A (H-
GB)
Maximum heat output
25 kW
Effective output range (P)
at 40/30 °C
6.5 to
27.0 kW
Effective output range (P)
at 50/30 °C
6.4 to
26.5 kW
Effective output range (P)
at 80/60 °C
6.0 to
25.2 kW
Domestic hot water heat
output (P)
6 to 30 kW
Maximum heat input –
heating (Q max.)
25.5 kW
Minimum heat input – heat-
ing (Q min.)
6.1 kW
Maximum heat input – do-
mestic hot water (Q max.)
30.6 kW
Minimum heat input – do-
mestic hot water (Q min.)
6.1 kW
Technical data – Heating
ULTIMATE
3 25r -A (H-
GB)
Max. flow temperature ad-
justment range (default
setting: 75 °C)
10 to 80 ℃
Maximum permissible
pressure
0.3 MPa
(3.0 bar)
Nominal water flow
(ΔT = 20 K)
1,085 l/h
Nominal water flow at
Pmin (ΔT = 20 K)
9,999 l/h
Nominal water flow
(ΔT = 30 K)
723 l/h
Nominal water flow at
Pmin (ΔT = 30 K)
9,999 l/h
Approximate value for the
condensate volume (pH
value between 3.5 and 4.0)
at 50/30 °C
2.55 l/h
Technical data – Electrics
ULTIMATE
3 25r -A (H-
GB)
Electrical connection
230 V /
50 Hz
Built-in fuse (slow-blow)
T2/2A, 250V
Max. electrical power con-
sumption
75 W
Standby electrical power
consumption
2 W
IP rating
IPX4D