METHVEN KOHA User manual

Issue A436601

KOHA WALL MOUNTED SINGLE LEVER MIXER

INSTALLATION GUIDE

TECHNICAL SPECIFICATIONS

Operating Pressure:

Min 150 kPa, Max 1000 kPa.

Recommended 150 kPa - 500 kPa.

Install a pressure limiting valve if supply

exceeds 1000kPa.

Operating Temperature:

Hot: Max 80°C.

Cold: Min 5°C .

NB: New Zealand Building Code Clause G12 -

Water Supplies speciﬁes all outlets used

primarily for personal hygiene shall deliver

water at a safe temperature.

Inlet Connections:

All ½" BSP.

Methven warrants this product against manufacturing defects and that it is suitable for use

under the operating conditions speciﬁed in this instruction sheet.

For your warranty please refer to www.methven.com or call Customer Service

New Zealand

0800 804 222

Australia

1300 638 483

USA

1800 975 5409

0800 195 1602

Ceramic Cartridge Adjustment

Do not remove the ceramic cartridge from the body assembly while carrying out the following

adjustments. Note: the cartridge is factory set for maximum temperature

Remove half-dome (if attached)

Flow limiting adjustment

1.5mm Allen key

Mix temperature limiting adjustment

1/2” BSP

(Not Supplied)

Inlet Connector

Spout

M5 Grubscrew

Faceplate

Plumber to supply

connection

O-ring

Half Dome

Lever Handle

Screws

Body assembly Final ﬁt-oﬀ (number 5 & 6)

A. Trim 1/2” BSP tube to length. Max 15mm +- 2mm protruding from wall lining. 26mm from

front of Inlet connector to wall lining.

B. Fit face plate to wall (use sealant).

C. Fit Inlet Connector and spout. Note: Do not turn spout against face plate to avoid marking.

Tighten with Allen Key.

D. Assemble ‘O’ ring, half dome and handle.

Cardboard sleeve

Apply silicon

sealant

Wall

Distance from mounting

stud to front of lining: 57-68mm

Hole cutout 57mm

110mm

Hole cutout

Max 22mm

IMPORTANT

Please read all of the instructions before installation

Avoid restrictive piping, ﬁttings or sharp angled bends when plumbing the mixer.

Do not hydrostatic test the installation with this mixer installed. Damage to the ceramic

headworks may occur.

All pipe-work must be thoroughly ﬂushed prior to installation of the mixer. In-line ﬁlters must

be installed on both hot and cold supplies to prevent foreign particles damaging the ceramic

headworks.

NOTE: It is the responsibility of the installer to ensure a water proof seal is achieved

between the faceplate and ﬁnished surface of the wall. If in any doubt about the quality

of the seal the faceplate should be removed and then reinstalled using silicon to ensure a

seal is achieved.

2.5mm Allen Key

Hot

Cold

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