ACV Compact A, Product Catalogue

Page: 12 / 27

Modulating Burner
The HeatMaster 71 and 101 are fitted with the
BG2000-M modulating burner, which has a metal fibre
(NIT) flame tube and smooth and near-silent ignition
and operation - ideal for use in applications where
burner noise must be kept to a minimum.
High efficiency combination boilers 21
Technical Data
Dimensions
HeatMaster® 71-101
High performance combined
boiler and water heater with fully
modulating burner technology.
The HeatMaster is a high performance hot water producer: its annular
Tank-in-Tank holds a volume of hot water for peak demand. This
combines the advantages of a hot water producer with integrated
storage and of an instantaneous water heater, while avoiding the
disadvantages of space, cost and efficiency.
The HeatMaster has a primary circuit and can therefore also be used as
a central heating boiler.
Exceptional Performance
The MCBA electronic controller regulates the boiler (start-up, safety,
modulation), the shunt pump and the heating pump in response to
hot water and heating demand. The MCBA offers numerous advanced
features:
- A large burner modulation range - down to less than 30%
- Extremely accurate hot water priority: even very small draw-offs are
immediately detected
- The hot water tank is always kept at an optimum temperature
- Excellent hot water performance
- Energy efficiency is optimised in both hot water and heating modes.
Product Features
• High performance fully modulating combined
boiler and water heater
• Stainless steel Tank-in-Tank design
• Low-NOx premix natural gas/LPG modulating burners
• Can also be used as a stand-alone water heater
• Anti-Legionellae: hot water stored at a consistently high
temperature
• Built-in primary circuit shunt pump
• Fully insulated with rigid polyurethane foam
• Stove enamelled casing
• Control panel including digital MCBA controller
complete with self diagnostic system and combined temperature
and pressure gauge
• Vented or unvented use, with mains pressure SystemPaks available
High efficiency combination boilers 20
HeatMaster® 71 HeatMaster® 101
Fuel Natural gas/LPG Natural gas/LPG
Burner options type BG2000-M BG2000-M
Input kW 20 to 69.9 25 to 107/22 to 110
Maximum output kW 18.4 to 63 23 to 96.8/20.2 to 99
Primary capacity L 108 130
Total capacity L 239 330
Heating surface area m 2 3.14 3.95
Primary circuit pressure drop mbar 46 83
DHW tank pressure drop mbar 45 180
Flue circuit pressure drop mbar 0.6 1.4
DHW connection (male BSP) Ø 1" 1"
Primary connection (female BSP) Ø 1
1/2
" 1
1/2
"
Flue connection Ø mm 150 150
Burner air intake connection Ø mm 80 (BG2000-M) 100 (BG2000-M)
Flue connection options type B23/C13/C33/C53 B23/C13/C33/C53
Weight empty Kg 282 335
Weight full Kg 521 665
Minimum working gas pressure mbar 20(Nat Gas)/37(LPG) 20(Nat Gas)/37(LPG)
Gas flow rate
m 3 /h
2.12 to 7.4(Nat Gas/0.82 to 2.86 (LPG) 2.65 to 11.32(Nat Gas/0.9 to 4.5(LPG)
Maximum operating temperature °C 90 90
Maximum operating pressure Primary: 3 bar Secondary: 10 bar
Gas connection - HM101: 1"
- HM71:
3/4 "
HeatMaster® 71 HeatMaster® 101
A 1743mm 2093mm
B 1630mm 2030mm
C 680mm 680mm
D 937mm 937mm
E 680mm 680mm
F 390mm 390mm
G Ø 150mm 150mm
H 1289mm 1693mm
J 285mm 285mm
K 1720mm 2120mm
Performance Data
HeatMaster® 71 HeatMaster® 101
Litres in first 10 minutes 40°C 646 905
Litres in first 10 minutes 45°C 543 777
Litres in first 10 minutes 60°C 346 514
Litres in first hour 40°C 2133 3172
Litres in first hour 45°C 1794 2680
Litres in first hour 60°C 1219 1813
Continuous flow 40°C Ltrs/hr 1835 2776
Continuous flow 45°C Ltrs/hr 1573 2379
Continuous flow 60°C Ltrs/hr 1067 1665
Reheat time to 60°C Min 16 13
Note: The above performances are based on the hot water being blended at point of use,
with a boiler temperature of 90°C and a domestic cold water inlet of 10°C.