General Information - Elwa HOTRUN 35 Operating And Fitting Instructions Manual

1 . Maximum temperature cut-out (a or b)
2 . Second max . t emperature cut-out (optional)
3 . Differential pressure switch
4 . Micro-switches of dP switch
5 . Terminal block
6 . Blue marking = cold water inlet
7 . Red marking = hot water outlet
The ELWA Hotrun electric instantaneous water-heaters are designed for point of use (most
efficient and lowest water and energy consumption) and multipoint applications, such as a wash
basin or shower (or both), 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 "Hotrun T" models meet AS/NZS 3500 and AS 3498 anti-scald requirements at the maximum
temperature performance stated on the label .
The outlet water temperature depends on the following factors:
- The flow rate through the HOTRUN, controlled by a fixed flow restrictor (supplied)
on or in the cold water inlet
- How far the hot water tap is actually opened or the incoming flow into the unit
restricted by a regulating valve or flow restriction in the spout of the tap or
shower head
- The temperature of incoming cold water
- The mixing of hot- and cold water
The hot water temperature rises by reducing the flow rate . By 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 kWatt rating .
A temperature rise of approximately 25° can be expected with the following flow rates:
kW loading:
3 . 5
4 . 6
6 . 0
When the inlet temperature is 25 °C the performance can rise by 50% .
The service temperature will be reached normally within 10 seconds after the Hotrun has been
switched on . A pressure of 100kPa is the minimum required for correct operation .
Flow rate: kW loading:
1 . 9 l/min 7 . 2
2 . 5 l/min 9 . 0
3 . 0 l/min
Components
1a
2
1b
3
4
5
6
7

General information

Flow rate:
4 . 0 l/min
5 . 0 l/min
3