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The ELWA Hotrun electric instantaneous water heaters are designed for both point of use (most 
efficient and lowest water and energy consumption) and multipoint applications, such as hand 
wash basin/shower/kitchen sink(s), in fact all places where instant hot water is required.  

The heating of the water is started instantly by opening a tap or valve connected to the hot water 
outlet. 

 The outlet water temperature depends on the following factors: 
- The flow rate through the HOTRUN (can be controlled by a flow restrictor on the cold water inlet side) 

  or the incoming flow into the Hotrun can be restricted by a flow regulating ball-valve. 

- How far the hot water tap is actually opened  

- The temperature of incoming cold water 

- The mixing of hot- and cold water 

When closing the hot water tap or when the flow drops below a minimum flow rate the heating 
will be stopped automatically. The performance of the Hotrun depends on its electrical capacity 
(kWatt rating) and also depends on the Voltage of the power supply. 

A temperature rise of 25°C can be expected with the following (variable) flow rates: 
 

 

 

 

Model Hotrun- 

120VE  150VE  180VE  210VE 

240VE 

Number of outlets 
simultaneously 

 

 

Hot water flow 
rate at 

t=25K¹  

(l/min)(min~max) 

2.5~8 

2.5~9 

2.5~10  2.5~12 

2.5~14 

 

 

 

 

The cold inlet water temperature effects the performance of the water heater, the higher the inlet water 

temperature, the more flow can be expected from the Hotrun water heater. 
A pressure of 90kPa is the minimum required for correct operation. 

 

 

Mounting instructions 

The screws and plugs are supplied with the unit. 

1.

 

Mark the position of the plugs or screws according to the positional template. 

2.

 

Mount the unit using 2 screws for the straight bracket. 

3.

 

Fit the top screws allowing it to protrude approximately 2-3 mm. Slide the bracket onto the 

protruding screws and ensure that it is secured without movement. 

4.

 

Fit the last securing screw between the hot- and cold water connection. 

 
  

 

Summary of Contents for HOTRUN-VE Series

Page 1: ...Revolutionary Temperature control and limiter HOTRUN VE range Operating and installation instructions ELECTRONIC INSTANTANEOUS WATER HEATERS saving energy and water ...

Page 2: ... 7 Electric connection 9 Initiation 10 Maintenance 10 Troubleshooting 10 Terms of warranty 11 Electrical approvals to Australian New Zealand standards AS NZS 60335 2 35 Certificate of approval number 11422 Plumbing approvals to Australian New Zealand standards AS NZS 3498 Certificate of approval number 40034 ...

Page 3: ...be less than 1300 Ω cm Your water supplier company can inform you about the electrical resistance specific resistance of the water in your area The water heater should not be installed in an area exposed to the risk of freezing Do not operate a Hotrun in a dry state the electrical power should remain switched off until the Hotrun is completely filled with water If the supply cord is damaged it mus...

Page 4: ...matically The performance of the Hotrun depends on its electrical capacity kWatt rating and also depends on the Voltage of the power supply A temperature rise of 25 C can be expected with the following variable flow rates Model Hotrun 120VE 150VE 180VE 210VE 240VE Number of outlets simultaneously 2 2 2 3 3 Hot water flow rate at t 25K l min min max 2 5 8 2 5 9 2 5 10 2 5 12 2 5 14 The cold inlet w...

Page 5: ...for the hot water outlet Do not reverse the connections or the water heater 6 Always use a BSP 100 bore ball valve in the cold water supply for service purposes 7 Important After installation open the water tap to flush the device to release all air from the coil and check all connections before turning on the power supply to the water heater Failing to do so shortens the life span of the electric...

Page 6: ...6 Figure 1 Installation of TMV Cold water inlet Optional pressure limiting valve Thermostatic mixing valve 50ºC Tempered water 60ºC Hot water HOTRUN VE water heater ...

Page 7: ...according to the applicable wiring diagram 4 Check Earth resistance and make sure there is a proper earth continuity 5 Fill the unit with water first and make sure there is no air left inside the heat exchanger and only then switch the power on Attention Avoid overheating Fill the unit completely with water before turning on the mains power supply For that purpose Open the tap and wait until the w...

Page 8: ... pushed in The red indicator will flash while you set temperature the display show the required temperature flashing before reach set temperature On initial start up and after a power disconnection the temperature setting will be 38 C and needs to be re set to the required temperature again The temperature ranges from 35 C to 60 C If there is not enough water flowing through the water heater it wi...

Page 9: ...lly attributed to water flow problems Ensure the pressure on the cold water supply is more than 100kPa while the Hotrun is in use and the flow rate at least 2 5 ltr min Too much back pressure in tap outlets or shower heads after the Hotrun causing lack of pressure differential over the Hotrun backpressure through the cold Maximum temperature overpressure cut out switch is activated Due to air in t...

Page 10: ...ctor in the supply line flow from the cold supply line is less than the requirements for the Hotrun Remedy Remove the restrictions in the tap aerator or shower head Check all other taps or restrictors inbuilt into the supply line are not effecting the flow or reducing the pressure too much Problem example 4 A Hotrun fitted in an upper floor situation of a building that is gravity fed the Hotrun do...

Page 11: ...ase the name of the supplier installer and the type of the heater 2 Elwa may void the warranty if the invoice is not legible 3 If the production date is missing the warranty will be voided 4 The warranty will be voided from the moment the appliance has been tampered with or has been modified in any way 5 Damage caused as a result of improper use or faulty installations are not covered by this warr...

Page 12: ...cts in the future for various reasons Elwa Pty Ltd Elwa Ltd Elwa BV Adelaide Auckland Amsterdam Australia New Zealand The Netherlands Phone 61 0 8 8353 4040 64 0 21 280 173 31 0 20 436 1224 www elwa com au www elwa co nz www elwa nl ref 02 201307 Flexible connections Initiation ...

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