Install Instructions

AMX300 SERIES
3 62-3112—12
WARNING
Do not operate the valve at temperatures outside its
calibrated range.
Typical Installation Diagrams
Fig. 3. Basic installation.
Fig. 4. ASSE 1017 compliant installation without
recirculation.
Fig. 5. ASSE 1017 compliant installation with recirculation.
Legend:
1 = Check Valve.
V = Any device that turns the domestic water system into a
closed system, such as a backflow preventer, a check valve
or a pressure reducing valve.
T = Recirculation pump thermostat control (e.g. L6006C1018
Aquastat controller).
NOTE: Installing a device to function as “V” in Figs. 4 and 5
is optional and depends on local codes. If a V type
valve is used, it is mandatory that a thermal
expansion tank be installed as shown, otherwise,
dangerously high pressures could result or the
water heater safety relief valve will frequently expel
water. If no V device is used, a thermal expansion
tank is not required.
NOTE: The recirculation pump must be controlled by a
thermostatic controller. If not, a gradual increase in
the temperature of the recirculation loop, up to the
temperature of the water in the storage tank, can
occur.
NOTE: Installing check valve (1) on the cold water supply is
required for an ASSE 1017 compliant mixing valve
installation. If a check valve is installed, it is
mandatory that a thermal expansion tank be
installed, as shown.
Recirculation Loop
The purpose of a recirculation loop is to supply immediate
tempered water to all hot water fixtures. This helps conserve
water. In the recirculation loop, the hot water supply returns
from the fixture furthest from the heating source and is
connected to the AMX300 Mixing Valve recirculation port
(marked "R" on the valve body) and the cold supply line of the
water heater.
The AMX300 Mixing Valve allows easy recirculation
connection through the integrated recirculation port. A
temperature-controlled circulating pump is required to move
the tempered water through the recirculation loop. The
L6006C1018 Aquastat
®
Controller is the recommended
temperature control device for the circulator. The Aquastat
Controller should be set 5 to 10 °F (3 to 5 °C) below the
controlled mixed water outlet temperature.
CAUTION
Injury Hazard.
Exceeding recommended maximum outlet mixed
water temperature can cause burns.
The AMX300 Series DirectConnect Mixing Valve outlet mixed
water temperature should not exceed 120 °F (49 °C).
VALVE MAINTENANCE
Hard water conditions may result in scale deposits causing
binding of internal parts in extreme cases. Cleaning the
internal parts will usually restore the valve operating
conditions. In some cases, it may be necessary to replace the
lower assembly. (See Fig. 6.) A Thermostatic Element
Replacement Kit, AM-1-025RP, is provided by Resideo.
M32192
WATER
HEATER
ALLOWABLE
SERVICE
VALVE
LOCATION
COLD
WATER
SUPPLY
AMX
SERIES
VALVE
M
R
H
C
COLD
WATER
TEE
COLD
IN
OUT
M31031B
WATER
HEATER
EXPANSION
TANK
ALLOWABLE
SERVICE
VALVE
LOCATION
COLD
WATER
SUPPLY
V
AMX
SERIES
VALVE
M
R
H
C
COLD
WATER
TEE
COLD
IN
OUT
(1)
M31032B
WATER
HEATER
AMX
SERIES
VALVE
EXPANSION
TANK
ALLOWABLE
SERVICE
VALVE
LOCATION
COLD
WATER
SUPPLY
V
M
R
H
C
T
(1)
PUMP
COLD
WATER
TEE
COLD
IN
OUT
(1)