23
Page
Installation
Installation Manual
Follow all code requirements
of the local authority on
condensate neutralizers and
whether or not they are required
for the installation
Condensate drain port
-Pressure relief valve-
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
CONDENSATE DRAIN
•
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
