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WATER PIPING
1.
All piping, including soldering material, and components connected to this heater shall be
approved for use in potable water systems.
2.
If the heater has ever been previously used for heating non-potable water, never install the
heater later into a potable water system.
3.
The installation of manual shutoff valves, drain valves and unions are recommended. A
professional should review each installation and ensure adequate ability to isolate, drain, and
disconnect heater for service needs.
4.
Connect suitable piping from water supply to the water heater. Note, water heater
connections are ½” NPT.
5.
This unit requires a pressure relief valve. The relief valve must be installed near the hot water
outlet and must comply with Standard for Relief Valves for Hot Water Supply Systems, ANSI
Z21.22 CSA 4.4.
6.
Purge the water line to remove debris and air. Debris can plug and damage the heater.
7.
Test water connections for leaks. Turn on water and purge water through the water heater and
system. Flow for 1-2 minutes. Ensure all air is eliminated.
8.
After filling and flushing the system, check the inlet water filter for debris and clean as
required.
9.
Consider insulation on hot water piping for energy conservation and personal protection. Do
not insulate the pressure relief valve!
10.
Install proper drainage for discharge of temperature and pressure relief valves per local code
when relief occurs and do not reduce or restrict line. Discharge line shall be installed to allow
complete drainage of both valve and line.
Summary of Contents for AHG-T42-LP
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