Specifications

TM040 16, 18 & 20L Continuous Flow Gas Water Heater Service Instructions

D.O.I: 2/06/2009

This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”

Preset Temperature Adjustment

Factory pre-set and maximum hot water outlet temperature settings for each water heater

series are shown below:

Model

Factory setting

Maximum Temp

Solar Compatible

244, 274, 874 Series

60ºC

246, 276, 876 Series

48ºC

Voltages up to 240 volts will be present within the water heater, take care

not to touch wiring terminals. Use an insulated tool when operating the DIP

switch or MIN and MAX buttons.

To adjust the preset temperature:

1. Remove the front cover from the water heater.

2. Turn DIP switches 3 and 4 ON (up position) on the PCB.

3. The temperature setting will be displayed by a series of flashes from the red LED, with

a three (3) second pause between each series of flashes. The temperature settings

and series of flashes are:

Preset Temperature Settings

Flashes

244, 274 874 series

246, 276, 876 series

Minimum temperature setting

1 flash

50°C

40°C

Mid temperature setting

2 flashes

55°C

43°C

Maximum temperature setting

3 flashes

60°C

48°C

4. Press the MIN or MAX button, located above the DIP Switches, until the desired

temperature is reached (indicated by the number of flashes from the red LED).

5. Turn DIP SWITCHES 3 and 4 off (down position).

6. The red LED will go out. The preset outlet temperature is now set.

7. Refit the front cover to the water heater.