Engineered for reliable and efficient performance, the Gas 320/620 Ace floor-standing boiler is designed with new and old building plant rooms in mind. It’s a compact boiler, easy to install and easy to maintain.
The Gas 320/620 Ace has the capacity to be installed side to side, which provides flexibility in floor design. It also has an optional secondary return feature that makes this boiler particularly suitable with heating technologies that use low-grade heat, such as heat pumps or underfloor heating circuits.
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- Gas 320-620 Ace
Features and Benefits
Operating range
ΔT of 10°C–40°C, operating range of 20°C to 80°C - Maximum set point 90°C
Low to zero
Low to zero-flow condition operation and monitoring, low-water content
Connection to BMS
Modbus gateway option for connection to a BMS system
Enhanced connectivity
Bluetooth for enhanced connectivity
Low emissions
NOx emissions from 15mg/kWh
Highly efficient
Condensing efficiency up to 106.8% - Non-condensing efficiency up to 98.5%
Easy installation
Multiple configurations, designed for ease of installation
Full support
Full technical support and information, commissioning included
Warranty
7-year warranty
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Product Literature
Installation & Service Manuals
Installation Manuals
Technical Specifications
Technical Specifications
Gas 320 620 Ace
BIM
Technical Specification
Model | 320 - 285/5 | 320 - 335/6 | 320 - 430/7 | 320 - 500/8 | 320 - 575/9 | 320 - 565/10 |
| Performance | ||||||
| Nominal heat output central heating operation @ 80/60°C kW (min-max) | 51.1-260.7 | 64.8-326.7 | 78.6-394.8 | 91.5-461.0 | 105.5-530.4 | 118.7-600.9 |
| Nominal heat output central heating operation @ 50/30°C kW (min-max) | 278.8 | 350.3 | 424.5 | 497.1 | 573.5 | 651.5 |
| Nominal input (Hi) (min-max) | 54-266 | 68-333 | 82-402 | 95-469 | 109-539 | 122-610 |
| Efficiency | ||||||
| SBEM seasonal efficiency GCV | 96.48 | 96.34 | 96.19 | 96.05 | 95.89 | 95.75 |
| Efficiency – full load 100% NCV | 98% | 98.1% | 98.2% | 98.3% | 98.4% | 98.5% |
| Efficiency – part load 30% NCV | 109.2% | 109% | 108.8% | 108.6% | 108.3% | 108.1% |
| Seasonal space htg Efficiency at nominal heat output | 88.3 | 88.4 | 88.5 | 88.6 | 88.6 | 88.7 |
| Seasonal space htg Efficiency at 30 % rated heat output | 98.4 | 98.2 | 98 | 97.8 | 97.6 | 97.4 |
| Gas | ||||||
| Standard fuel | Natural gas | Natural gas | Natural gas | Natural gas | Natural gas | Natural gas |
| Max gas consumption m<sup>3</sup>/h | 5.7 - 28.1 | 7.2 - 35.2 | 8.7 - 42.5 | 10.1 - 49.6 | 11.5 - 57.0 | 12.9- 64.6 |
| Min/max gas inlet pressure mbar | 17-25 | 17-25 | 17-25 | 17-25 | 17-25 | 17-25 |
| Flue* | ||||||
| Flue diameter mm I/D | 250 | 250 | 250 | 250 | 250 | 250 |
| Air inlet diameter mm I/D | 250 | 250 | 250 | 250 | 250 | 250 |
| Flue gas mass flow rate kg/h | 91-448 | 114-561 | 138-677 | 160-790 | 184-907 | 205-1027 |
| Flue gas temperature 0°C | 30-60 | 30-61 | 30-64 | 30-63 | 30-66 | 30-65 |
| Residual fan duty Pa | 130 | 120 | 130 | 150 | 150 | 150 |
| Hydraulics | ||||||
| Water content litres | 49 | 60 | 71 | 82 | 93 | 104 |
| Hydraulic resistance @ 40°C ΔT mbar (kPa) | 34 (3.4Kpa) | 33 (3.3Kpa) | 36 (3.6Kpa) | 33 (3.3Kpa) | 38 (3.8Kpa) | 39 (3.9Kpa) |
| Hydraulic resistance @ 30°C ΔT mbar (kPa) | 60 (6Kpa) | 59 (5.9Kpa) | 64 (6.4Kpa) | 59 (5.9Kpa) | 67 (6.7Kpa) | 69 (6.9Kpa) |
| Hydraulic resistance @ 20°C ΔT mbar (kPa) | 113 (11.3Kpa) | 110 (11.0Kpa) | 120 (12.0Kpa) | 110 (11.0Kpa) | 125 (12.5Kpa) | 130 (13.0Kpa) |
| Hydraulic resistance @ 11°C ΔT mbar (kPa) | 374 (37.4Kpa) | 364 (36.4Kpa) | 397 (39.7Kpa) | 364 (36.4Kpa) | 413 (41.3Kpa) | 435 (43.5Kpa) |
| Nominal flow rate @ 40°C ΔT l/s | 1.6 | 1.9 | 2.3 | 2.7 | 3.2 | 3.6 |
| Nominal flow rate @ 30°C ΔT l/s | 2.1 | 2.6 | 3.1 | 3.6 | 4.2 | 4.8 |
| Nominal flow rate @ 20°C ΔT l/s | 3.1 | 3.9 | 4.7 | 5.5 | 6.3 | 7.1 |
| Nominal flow rate @11°C ΔT l/s | 5.6 | 7.1 | 8.5 | 9.9 | 11.5 | 13.0 |
| Standard operating temperature °C | 20-90 | 20-90 | 20-90 | 20-90 | 20-90 | 20-90 |
| Max operating temperature °C | 90 | 90 | 90 | 90 | 90 | 90** |
| High limit temperature °C | 110 | 110 | 110 | 110 | 110 | 110 |
| Max water operating pressure bar | 7 | 7 | 7 | 7 | 7 | 7 |
| Min water operating pressure bar | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| General | ||||||
| Dry weight kg without packaging incl. control box | 366 | 400 | 435 | 497 | 533 | 570 |
| Dimension (WxHxD) | 707x1550x1862 | 707x1550x1862 | 707x1550x1862 | 707x1550x2172 | 707x1550x2172 | 707x1550x2172 |
| NOx Annual Emissions EN15502 G20 | 43 | 43 | 44 | 45 | 46 | 47 |
| NOx Annual Emissions BREEAM G20 | 15 | 16 | 16 | 17 | 18 | 18 |
| Noise levels dB(A) at 1 metre | 55.7 | 55.7 | 55.7 | 55.7 | 55.7 | 55.7 |
| Electrical (excluding pump) | ||||||
| Nominal power supply | 230v-1ph-50hz | 230v-1ph-50hz | 230v-1ph-50hz | 230v-1ph-50hz | 230v-1ph-50hz | 230v-1ph-50hz |
| Power consumption w | 10-280 | 9-345 | 10-450 | 10-576 | 10-768 | 10-720 |
| Modulating input v dc | 0-10 | 0-10 | 0-10 | 0-10 | 0-10 | 0-10 |
| Start current amps | 4 | 4 | 4 | 4 | 4 | 4 |
| Fuse main (power connector) | 10 | 10 | 10 | 10 | 10 | 10 |
| Controls voltage | 24 (max 4va) | 24 (max 4va) | 24 (max 4va) | 24 (max 4va) | 24 (max 4va) | 24 (max 4va) |
| Insulation class IP | X1 | X1 | X1 | X1 | X1 | X1 |
| Run current amps | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 |
*Supplied as standard for conventional flue, option for room-sealed available
**When operating at >25°C ΔT maximum flow temperature is limited to 80°C
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