My question is related to this topic and it is about the following code:
"607.2.2 Piping for Recirculation Systems Having Master Thermostatic Valves: Where a thermostatic mixing valve is used in a system with a hot water recirculating pump, the hot water or tempered water return line shall be routed to the cold water inlet pipe of the water heater and the cold water inlet pipe or the hot water return connection of the thermostatic mixing valve."
My concern is that the return line of the recirculation of loop can be too warm to be used in mixing valve. For instance, let's assume that the water heater is set to 140F, and we need 120F at the output of the mixing valve. If the return line temperature is 115F and connected to cold supply line of the mixing valve, can the mixing valve still work properly?
Do you have sample drawings showing this scheme?
My question is related to this topic and it is about the following code:
"607.2.2 Piping for Recirculation Systems Having Master Thermostatic Valves: Where a thermostatic mixing valve is used in a system with a hot water recirculating pump, the hot water or tempered water return line shall be routed to the cold water inlet pipe of the water heater and the cold water inlet pipe or the hot water return connection of the thermostatic mixing valve."
My concern is that the return line of the recirculation of loop can be too warm to be used in mixing valve. For instance, let's assume that the water heater is set to 140F, and we need 120F at the output of the mixing valve. If the return line temperature is 115F and connected to cold supply line of the mixing valve, can the mixing valve still work properly?
Do you have sample drawings showing this scheme?