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Raypak - Model 1722

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“Raypak® is a compact, efficient heating design which is the ideal way to heat large quantities of water for both hot water and hydronic applications.

The use of direct fired pure copper finned heat exchangers has been well proven over time.

And in the past fifty years, the Raypak® range has developed the high input water heater even further.”

Installation Energy
Indoor Gas

Product Specifications

DIMENSIONS AND TECHNICAL DATA TABLE – INDOOR/OUTDOOR MODELS
Natural – Input
– Output
MJ/h
kW
1,719
380
LPG – Input
– Output
MJ/h
kW
1,581
350

Dimensions
A
B
G
Flue Connection


mm
mm
mm
mm


2,060
2,070
930
455

Weight kg 440
Inlet/Outlet Connections   RC21/2/65
Gas Connection
Natural – On / Off Models
Natural – Modulating Models
LPG – On / Off Models
LPG – Modulating Models
 


R2/50
R2/50
R11/2/40
R1/25

Relief Valve Connection
On/Off models
Modulating models
 
RC3/4/20
RC1/25
Electrical Rating 240V 50Hz Watts
Amps
100
0.42
Min. Buffer Tank Capacity Litres 650
Max. Storage Capacity Litres 19,500
Natural Gas    
Litres Recovery Per Hour @ 30°C rise 10,893
  40°C rise 8,170
  50°C rise 6,536
  60°C rise 5,447
  65°C rise 5,028
  70°C rise 4,669
  75°C rise 4,357
  80°C rise 4,085
  85°C rise 3,845
Flow Rate and Pressure Drop
Max. Flow Rate
Modulating (10°C Rise)*
Pressure Drop

 

L/s
kPa

 

6.31
55

Max. Flow Rate
On/Off (15°C Rise)*
Pressure Drop

L/s
kPa


6.05
51

Min. Flow Rate
(20°C rise)*
Pressure Drop

L/s
kPa

4.54
30

 

GAS PRESSURE  
Natural Minimum kPa 1.10
  Test Point kPa 0.92
  Maximum kPa 4.00
LPG Minimum kPa 2.75
  Test Point kPa 2.75
  Maximum kPa 4.00
THERMOSTAT SETTINGS  
Modulating Maximum °C 95
  Factory set °C 78
  Minimum °C 44
On/Off Maximum °C 80
  Factory set °C 50
  Minimum °C 44
17CLEARANCES COMBUSTIBLES (mm)
Back Front Left Right Ceiling
600 750 600 600 1,200
17CLEARANCES NONCOMBUSTIBLES (mm)
Back Front Left Right Ceiling
150 750 300 300 1,200
Raypak® indoor gas water heaters are designed for connection to a flue system in accordance with the requirements of AS/NZS 5601.1.

18 Expansion Control Valve is not supplied with the water heater.
19 Figures in brackets are to be used if a Raypak stainless steel storage tank is utilised in the system.
20 An 850kPa relief valve can be fitted to modulating water heaters used in potable hot water applications.

ACCESSORIES FOR RAYPAK COMMERCIAL GAS WATER HEATERS
Accessories Standard Optional
Pump Run on Timer  modulating On/Off
Tankstat -
Hot Surface Ignition (HSI) - -
Electronic Ignition -
Water Flow Switch -
Relay Run and Fault Status -
Temperature and/or Pressure Gauge
(modulating burner models only)
-
Temperature Gauge (on/off models only) -
High Wind Top (outdoor installations only)
Rear Water Connections - -
Left Hand Water and Gas Connections -
Right Hand Water Connections - -
Right Hand Water and Gas Connections -
Audible Alarm -
Ambient Air Sensor
(modulating burner models only)
-
MINIMUM SUPPLY PRESSURE
System design and pump selection is critical when water heaters are connected to a low pressure water supply. Refer to the table below for minimum pressure equirements for Grundfos UPS series pumps. Minimum pressure requirements for TP series pumps depend on system characteristics and need to be calculated. Contact your pump supplier for details.
Pump Minimum Inlet Pressure Required (m)
at Operating Temperature
  75°C 80°C 85°C 90°C 95°C
UPS50-120B 4.0 5.0 6.0 7.0 9.0
WATER SUPPLY AND RELIEF VALVE SETTINGS
Burner Type   On/Off Modulating
Relief Valve Setting
Potable Hot Water
Mechanical Heating

kPa
kPa

850 (700)19
-

850 (700)19,20
415
Expansion Control Valve (ECV18) Setting
Potable Hot Water
Mechanical Heating

kPa
kPa

700 (550)19
-

700 (550)19,20
-
Maximum Supply Pressure without ECV18
Potable Hot Water
Mechanical Heating
fitted
kPa
kPa

680 (550)19
-

680 (550)19,20
330
with ECV18 fitted
Potable Hot Water
Mechanical Heating

kPa
kPa

550 (450)19
-

550 (450)19,20
-
RAYPAK MODEL NUMBERS
The following information should be supplied when ordering Raypak water heaters
B 0868 N C O / ID
Water
Heater
Approx
Thermal Input*
N = Natural Gas
P = Propane
Copper Heat
Exchanger
O = On/Off
M = Modulating
  ID = Indoor
OD = Outdoor
HWT = High Wind Top

Note: *last digit designates series type.

Technical Documents

Sample Specification View Online

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