Are there any refrigerant piping limitations?
What considerations do I need to take when sizing the hydronic piping? Select piping diameter in relation to required water flow and available ESP of the pump. See following example: Minimum water flow through the hydrobox is 4.3 gpm; maximum is 15.3 gpm. (feet of head = psi x 2.31) Do I have to use a room thermostat connected to the hydrobox? Even though Daikin Altherma operates without an external thermostat, Daikin highly recommends this feature to be included. This will prevent excessive space heating and save energy since the system will stop operating when the room temperature is above the thermostat set point. Do I have to use a Daikin thermostat? It is also recommended to use a Daikin thermostat. The control logic of the Daikin thermostat matches Daikin Altherma for enhanced reliability. If a third party thermostat is used, it must be capable of setting the heating minimum run-time of six (6) minutes. Thermostats with minimal heating run times are not readily available and may
