280 | Raypak Hot Water

Raypak® 280 is a compact and efficient heating system for large quantities of water for both hot water and hydronic applications.

Can be installed indoors or outdoors
Available with On/Off or modulating burners
Hot Surface Ignition (HSI) reduces operating costs
The On/Off type water heaters can operate as low as 41°C without any condensation or sooting
The efficient all-copper heat exchanger provides an outstanding 82% thermal efficiency
Raypak 280 delivers up to 758L recovery per hour at a 70°C rise
Maximum storage capacity of 3000L

Max Storage Capacity	Installation Location	Weight Empty Approx	Natural Gas Input	Natural Gas Output
3000 Litres	Indoor/Outdoor	93 kg	278 MJ/hr	62 kW

Max Storage Capacity	3000 Litres
Installation Location	Indoor/Outdoor
Weight Empty Approx	93 kg
Natural Gas Input	278 MJ/hr
Natural Gas Output	62 kW

Product Specifications

Max Storage Capacity

3000 Litres

Installation Location

Indoor/Outdoor

Weight Empty Approx

93 kg

Natural Gas Input

278 MJ/hr

Natural Gas Output

62 kW

Inlet Connection

RC1½

ULPG Input

261 MJ/hr

ULPG Output

58 kW

Warranty: Parts (Parts/Labour)

1 Year

Warranty: Heat Exchanger (Parts/Labour)

5/1 Year

Dimensions H x W (includes high wind top)

2240 x 570 mm

Dimensions H x W (without high wind top)

1715 x 570 mm

Flue Connection

205 mm

Natural Gas Connection On/Off Models

RP¾

Natural Gas Connection Modulating Models

RP1

ULPG Connection - On/Off Models

RP¾

ULPG Connection - Modulating Models

RP¾

Relief Valve Connection - On/Off Models

RC¾

Relief Valve Connections - Modulating Models

RC¾

Electrical Rating 240V 50Hz

50 Watts

Electrical Rating 240v 50Hz

50 Amps

Minimum Buffer Tank Capacity

325 Litres

Natural Gas Recovery per/hr @ 30°C rise

1769 Litres

Natural Gas Recovery per/hr @ 40°C rise

1327 Litres

Natural Gas Recovery per/hr @ 50°C rise

1061 Litres

Natural Gas Recovery per/hr @ 60°C rise

844 Litres

Natural Gas Recovery per/hr @ 65°C rise

816 Litres

Natural Gas Recovery per/hr @ 70°C rise

758 Litres

Natural Gas Recovery per/hr @ 75°C rise

708 Litres

Natural Gas Recovery per/hr @ 80°C rise

663 Litres

Natural Gas Recovery per/hr @ 85C rise

624 Litres

Maximum Flow Rate Modulating (10°C Rise)

1.47 Litres/sec

Maximum Flow Rate Modulating Pressure Drop

8 kPa

Maximum Flow Rate On/Off (15°C Rise)

0.98 Litres/sec

Maximum Flow Rate On/Off Pressure Drop

4 kPa

Minimum Flow Rate (20°C Rise)

0.74 Litres/sec

Minimum Flow Rate Pressure Drop

3 kPa

Back Clearance (Combustibles)

500 mm

Front Clearance (Combustibles)

750 mm

Left Clearance (Combustibles)

600 mm

Right Clearance (Combustibles)

500 mm

Ceiling Clearance (Combustibles)

1200 mm

Back Clearance (Non-Combustibles)

150 mm

Front Clearance (Non-Combustibles)

750 mm

Left Clearance (Non-Combustibles)

600 mm

Right Clearance (Non-Combustibles)

150 mm

Ceiling Clearance (Non-Combustibles)

1200 mm

Raypak Pipe Size & Pump Selection Chart

Model	Pump	Branch Size (mm)	Minimum Manifold Header Size Required (mm)
			1 Unit	2 Units	3 Units	4 Units
280	32-80N	32	32/3	50/3	65/3	65/3
350	32-80N	40	40/3	50/3	65/3	80/3
430	32-80N	40	40/3	65/3	65/3	80/3
538	32-80N	50	50/3	65/3	80/3	100/3
658	32-80N	50	50/3	80/3	100/3	100/3
768	40-60/2B	50	50/3	80/3	100/3	100/3
868	40-60/2B	65	65/2	100/2	100/2	125/2
972/992	40-60/2B	65	65/3	100/3	100/3	125/3
1142/1182	50-120B	65	65/1	100/1	125/1	125/1
1242/1292	50-120B	65	65/2	100/2	125/2	125/2
1362/1412	50-120B	80	80/2	100/2	125/2	150/2
1662/1722	80-120B	80	80/2	125/2	125/2	150/2
1852/1922	80-120B	100	100/3	125/3	150/3	150/3
2004/2214	80-120B	100	100/1	125/1	150/1	-
2404	80-120B	100	100/1	125/1	150/1	-
2634	80-120B	100	100/2	125/2	-	-
2804/3164	80-120B	100	100/3	150/3	-	-
3304	80-120B	100	100/3	150/3	-	-
3694	80-120B	125	125/3	150/3	-	-
3804/4224	80-120B	125	125/3	-	-	-