Specifications

COMMISSIONING

OUTLET TEMPERATURE COMPENSATION ADJUSTMENT – CG20-50 SERIES

The maximum outlet temperature of a CG20-50 series water heater may be adjusted to compensate for

temperature losses in the pipe work between the water heater outlet and sanitary fixtures.

Warnings

After adjustment, the water temperature from the first tap in the hot water pipe work after the water

heater used for personal hygiene purposes, such as in a bathroom or ensuite, MUST NOT exceed:

 48°C if a temperature controller is connected to the water heater, or

 50°C if a temperature controller is not connected to the water heater.

If there is a tap, such as a kitchen or laundry tap, in the hot water pipe work between the water heater

and the first tap used for personal hygiene purposes, then it is possible for a water temperature to be

delivered from that tap of up to 3°C to 5°C higher than the setting shown on the controller.

It is necessary to have the electrical supply to the water heater switched on during stages of the outlet

temperature compensation adjustment procedure.

Warnings

The removal of the front panel will expose 240 volt wiring. Take care not to touch wiring terminals. The

adjustment must be carried out by a qualified person.

This procedure will involve the adjustment of dip switches. Adjustment of a dip switch should only be

made with an insulated tool.

Before Commencing the Procedure

This procedure cannot be conducted:

With a temperature controller connected to the water heater.

 A temperature controller(s) connected to the water

heater must be disconnected prior to the

commencement of this procedure.

Refer to “Disconnecting a Temperature Controller(s)” on

page 53.

Disconnecting a Temperature Controller(s)

To disconnect the temperature controller(s):

1. Switch off the electrical supply at the power outlet to the

water heater.

2. Unscrew and gently remove the front panel of the water

heater.

3. Loosen the terminal screws to release the cable lugs.

The two remote controller terminals are adjacent to each

other and located at the top right of the printed circuit board

(PCB), to the right of the label marked „REMOTE

CONTROLLER TERMINAL‟.

4. Withdraw the cable lugs, ensuring they are well clear of the

terminals.