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XI. Hot Water Supply Boiler Water Piping
This Section of the Manual covers the AMP Hot Water
Supply Boiler used for applications other than space
heating where potable water is being heated directly.
The AMP Hot Water Supply Boiler (Models AMPW 2500 -
AMPW 4000) is designed for heating potable water. This
Product will operate most efficiently and reliably when
paired with one or more storage tanks.
A. General Piping Guidelines
The following steps are general guidelines for installing
the AMP in a hot water supply system. The installer is
responsible for complying with local codes.
1. The cold water return line shall be connected to the
inlet of the appliance labeled "Return".
2. The hot water supply line shall be connected to
the outlet manifold of the appliance shown in
Figure 22.
3. The system cold water supply line shall include a
backflow preventer/check valve and properly sized
expansion tank for the capacity of the system.
4. A drain valve should be installed at the lowest point
in the system
5. The AMP is a condensing appliance. The return
water and cold water supply should be piped to
the primary loop going into the appliance.
6. Circulation pump must be installed in the primary
piping between the tank and the appliance.
B. Factory Supplied Outlet Manifold (AMPW)
T&P Relief Valve
T&P Gauge
Low Water Cut Off
Figure 22: Hot Water Outlet Manifold (AMPW)
Water Flow Switch
49
NOTICE
NOTICE
Failure to properly pipe appliance may result in
improper operation and damage.
Install the appliance so that the gas ignition system
components are protected from water (dripping,
spraying, rain, etc.) during appliance operation and
service (circulatory replacement, cleaning, etc.).
Contamination of the water by corrosive chemicals
will cause corrosion of the steel components, and
can lead to appliance failure. Thermal Solutions'
Standard Warranty does not cover problems
caused by contamination of supply water.
Installation is not complete unless a safety
relief valve is installed in the outlet manifold of
the appliance or the hot water piping shortly
downstream of the appliance.
Failure to maintain the flow through the appliance
within the specified limits could result in erratic
operation or premature failure.
The circulator shall be sized properly based on the
pressure drop of the entire loop and the desired
temperature rise.
Maintain 1" (24mm) clearance around all
uninsulated hot water pipes. The piping going
into the cold water inlet of the appliance can still
be hot from circulating the water in the tank.
C. Standard Piping Components
1. Circulation Piping
The circulation or primary piping includes both
pipelines connecting the appliance to the tank.
The pipe diameter for 1 appliance should be sized
no smaller than what is recommended in Table 29.
The inlet and outlet connections of the AMP are
grooved Victaulic pipe connections. The Victaulic
rigid coupling 107N QuickVic
2. Temperature and Pressure Relief Valve
a. This appliance is shipped with a temperature and
pressure safety relief valve complying with the
standard for relief valves for hot water supply
systems ANSI Z21.22 ∙ CSA 4.4 installed on the
hot water outlet manifold.
is recommended.
TM
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