Condensate Drain - Takagi T-H3M-DV Installation Manual And Owner's Manual

140 indoor/outdoor on-demand water heater

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Installation manual and owner's manual (56 pages)

Table Of Contents

Table of Contents

The water heater has a high-temperature shutoff switch built in as a standard safety feature (called a

Hi-Limit switch) therefore a "pressure only" relief valve is required

• This water heater does not come with an approved pressure relief valve

• An approved pressure relief valve must be installed on the hot water outlet

• The pressure relief valve must conform to ANSI Z21.22 or CAN 1-4.4 and installation must follow local

codes

• The discharge capacity must be at least 120,000 BTU/h for the 140 (T-H3M) models

• The pressure relief valve needs to be rated for a maximum of 150 psi (1 MPa)

• The discharge piping for the pressure relief valve must be directed so that the hot water cannot splash

on anyone or on nearby equipment Follow local codes

• Attach the discharge tube to the pressure relief valve and run the end of the tube to within 6 inches

(152 mm) from the floor This discharge tube must allow free and complete drainage without any

restrictions

• If the pressure relief valve installed on the water heater discharges periodically, this may be due to a

defective thermal expansion tank, defective pressure relief valve, or it could be signs of internal scale

build up

• The pressure relief valve must be manually operated periodically to check for correct operation

• No valves may be placed between the relief valve and the water heater

• The water heater does not include a built-in condensate neutralizer cartridge for reducing the pH level

of condensate water If local codes dictate that condensate must be neutralized prior to drainage, a

condensate neutralizer must be installed An accessory Neutralizer assembly is sold separately

• In the absence of applicable local codes and regulations, the manufacturer recommends that

condensate be disposed of into a standard drain Connect a drain tube from the condensate drain port

(shown below) located on the bottom of the water heater to a standard drain

Follow all code requirements

of the local authority on

condensate neutralizers and

whether or not they are required

for the installation

-Pressure relief valve-