Raypak Hot Water 350

Raypak Hot Water
Raypak 350

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Raypak® 350 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 350 delivers up to 937L recovery per hour at a 70°C rise
  • Maximum storage capacity of 4000L 
Max Storage Capacity Installation Location Weight Empty Approx Natural Gas Input Natural Gas Output
4000 Litres Indoor/Outdoor 103 kg 343 MJ/hr 76 kW
Max Storage Capacity 4000 Litres
Installation Location Indoor/Outdoor
Weight Empty Approx 103 kg
Natural Gas Input 343 MJ/hr
Natural Gas Output 76 kW

Raypak Hot Water 350

Product Specifications

Max Storage Capacity
4000 Litres
Installation Location
Indoor/Outdoor
Weight Empty Approx
103 kg
Natural Gas Input
343 MJ/hr
Natural Gas Output
76 kW
Inlet Connection
RC1½
ULPG Input
323 MJ/hr
ULPG Output
72 kW
Warranty: Parts (Parts/Labour)
1 Year
Warranty: Heat Exchanger (Parts/Labour)
5/1 Year
Dimensions H x W (includes high wind top)
2035 x 655 mm
Dimensions H x W (without high wind top)
1715 x 655 mm
Flue Connection
225 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
2187 Litres
Natural Gas Recovery per/hr @ 40°C rise
1640 Litres
Natural Gas Recovery per/hr @ 50°C rise
1312 Litres
Natural Gas Recovery per/hr @ 60°C rise
1094 Litres
Natural Gas Recovery per/hr @ 65°C rise
1010 Litres
Natural Gas Recovery per/hr @ 70°C rise
937 Litres
Natural Gas Recovery per/hr @ 75°C rise
875 Litres
Natural Gas Recovery per/hr @ 80°C rise
820 Litres
Natural Gas Recovery per/hr @ 85C rise
772 Litres
Maximum Flow Rate Modulating (10°C Rise)
1.82 Litres/sec
Maximum Flow Rate Modulating Pressure Drop
13 kPa
Maximum Flow Rate On/Off (15°C Rise)
1.22 Litres/sec
Maximum Flow Rate On/Off Pressure Drop
6 kPa
Minimum Flow Rate (20°C Rise)
0.91 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
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