Discontinued 2009-2010, superseded by the VT-Series
Temperature controlled continuous flow gas hot water heaters. Primarily used for residential applications. Four models in the range, including an ‘a’ aggressive model.
Hard or acidic water will need to be treated in order to use this product. Exception to this is the XR32a model, which is designed for aggressive water areas such as Christchurch.
Gas type
Available for Natural Gas or LPG (XR32a was only available in LPG). Gas type specified at time of purchase.
Hot water capacity
XR18: 2.4-18 L/min
XR26i: 2.4-32 L/min
XR32 / XR32a: 2.4-37 L/min
Input and output
Model
Input
Output
XR18
140 MJ/h or 39 W
32 kW
XR26i
195 MJ/h or 54 kW
47 kW
XR32
250 MJ/h or 68 kW
57.6 kW
XR32a
250 MJ/h or 69 kW
55.2 kW
Exhaust system external models
Forced flue
Flue XR26i
Balanced flue room sealed appliance
Frost protection
Fitted as standard. Frost protection operates automatically, as long as the appliance is connected to the electrical power supply, by activating when the temperature inside the unit drops below 3.5 °C, and turns off once the temperature inside the unit reaches 7 °C.
Ignition system
Direct electronic ignition
Injector sizes
Model
NG (mm)
LPG (mm)
XR18
0.85, 1.30
0.70, 1.05
XR32
1.05, 1.65
0.75, 1.15
Line pressure (min.)
NG: 1.13 kPa, LPG 2.75 kPa
Line pressure (max.)
3.5 kPa (maximum standing pressure under abnormal intermittent conditions is 5.0 kPa).
In the case of commercial metering, (i.e. 35-37 kPa coming in), there may be a requirement to regulate the incoming pressure down).
Power consumption
Model
NG
Standby
Auto. frost protection
XR18
46 W
2 W
74 W
XR26i
65 W
2 W
100 W
XR32 / XR32a
72 W
2 W
116 W
Pressure relief
Valve opens at 2060 kPa, and closes at 1470 kPa
Noise level
49 dB(A)
Safety devices
Flame failure, boil-dry protection, overheat protection, fusible link, pressure relief valve and combustion fan rpm check
Water supply
Nominal operating pressures:
100-1000 kPa – XR18
150-1000 kPa – XR26i
140-1000 kPa – XR32
200-1000 kPa – XR32a
Activation flow rate 2.4 L/min
Weights
XR18 = 15.5 kg XR26i = 22 kg XR32 = 25 kg XR32a = 21 kg
Market release
2006 2008 – XR32a
Discontinued
2009, superseded by the VT-Series XR32a was discontinued in 2010