AMX300 DIRECTCONNECT™ MIXING VALVE KITS
3
62-3113—01
WATER CONNECTIONS
The AMX300 mixing valve has an integral 1/2-in. FNPT
Alternate Hot Water outlet port (marked with an embossed
“AH” on the body of the valve) that draws unmixed, very hot
water from the tank. Use of this port is optional and should be
used if very hot water is needed at specific fixtures (laundry,
dishwasher, etc.). It also has an integral 1/2-in. FNPT
recirculation inlet port (marked with an embossed “R” on the
body of the valve) which can be connected to a domestic hot
water recirculation loop. The return line from the recirculation
loop must have a check valve installed to prevent reverse flow
from the water heater to the fixtures (refer to literature # 62-
3112,
AMX300 Series DirectConnect™ Mixing Valve
Installation Instructions
). Refer to Fig. 2 and 3 for descriptions
and locations of the inlet and outlet ports on the mixing valve
and cold water tee.
Fig. 2. Mixing valve connections.
Fig. 3. Cold water tee connections.
WARNING
Do not return recirculation loop to any other
location other than “R” inlet of the mixing device.
If recirculation loop water is returned to the water
heater at any location other than the optional
recirculation inlet, the recirculation loop is exposed to
unmixed VERY hot water.
M29854
COLD WATER INLET
(FROM COLD WATER TEE)
MIXED WATER OUTLET
(3/4-IN. MNPT)
ALTERNAT HOT
WATER OUTLET
(3/4-IN. FNPT)
HOT WATER INLET
(3/4-IN. FNPT)
RECIRCULATION
INLET (1/2-IN. FNPT)
M29787
3/4 IN. NPT COLD
WATER INLET
COLD WATER
OUTLET TO
MIXING VALVE
1/4 IN. NPT COLD
WATER OUTLET
3/4 IN. NPT COLD
WATER OUTLET
TO WATER HEATER