For Service; For The Plumber; Specifications - Takagi GS-20W-AU5 Installation Manual And Owners Manual

FOR SERVICE

Maintenance and fault-finding must be done in accordance with these instructions and the appli-
cable regulations listed on the previous page.
Installation and service must be performed by a qualified installer (for example, a li-
censed plumber or gas fitter).

FOR THE PLUMBER

NOTE: GS-20W/26W-AU5 is supplied factory set at 50 °C outlet hot water temperature to comply
with the requirements of AS 3498.2009. If the water heater is not preset to 50 °C, tempering valve
is required.
Please follow all the installation instructions and operating instructions in the Installation guide
and User's guide and the following additional instructions for the water heater outlet connection.
1. When connecting the hot water supply to the
fixtures in the property a minimum of 1.4
metres of pipework must be used between the
outlet of the water heater and the first tap and
outlet. See Diagram to the right.
2. The Hot water line should be insulated with
Ensolex or similar pipe insulation.
3. When the installation is completed the tem-
perature is to be tested at the taps to confirm
the water temperature does not exceed the
required 50°C setting.
2.

SPECIFICATIONS

MODEL
Gas Type
Gas Input (MJ/h)
Inlet Pressure
(kPa)
Water Supply
Pressure kPa
Height mm
Depth mm
Width mm
Weight kg
Gas Connection mm
Water Connections
Ignition
Electrical Supply V
GS-20W/26W-AU6 is supplied factory set at 60 °C.
NOTES:
*The appliance will operate at reduced performance below 340 kPa.
• For information relating to burner test point pressures and injector sizes, refer to the rating plate located on the
right hand side of the cabinet for each model. (Please refer to p. 7.)
• For information relating to overall dimensions and connection points, refer to the diagrams on p.5.
• Before installing in areas over 1500 m above sea level, contact the manufacturer for instructions.
GS-20W-AU5/6 GS-20W-AU5/6 GS-20W-AU5/6 GS-26W-AU5/6 GS-26W-AU5/6 GS-26W-AU5/6
Nat. Gas LPG
160
1.13 min./ 2.75 min./
5.0 max. 7.0 max.
15.0
WARNING
First tap or outlet
ULPG Nat. Gas
2.75 min./ 1.13 min./
7.0 max. 5.0 max.
150* min.
1200 max.
515
170
350
20 BSP
20 BSP
Electronic
240 AC
3
• Total length to first tap
or outlet is required
to be a minimum of
1.4 metres from the
outlet connection of
the water heater.
• Pipe size is nominal 18
mm from hot water
outlet to the first tap
or outlet.
LPG ULPG
195
2.75 min./ 2.75 min./
7.0 max. 7.0 max.
16.0