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Press <NEXT> to proceed to the next Setup Wizard screen, and refer to either
4.2.2.2.
For Pool Heater models, program the NURO as Domestic Hot Water being the pool water values.
4.2.2.1 Sensor as an Aquastat
If "Sensor as an Aquastat" is selected, the next screen allows the user to adjust four settings:
•
DHW Tank Setpoint Temperature
o This is the desired domestic hot water setpoint temperature to maintain in the storage
tank.
•
DHW Tank Setpoint Boost
o The NURO will control the P-K MACH
Setpoint". Initially, this setpoint will exceed the "DHW Tank Setpoint Temperature" by the
"DHW Tank Setpoint Boost".
o For example, if the "DHW Tank Setpoint Temperature" is 140°F, and the "DHW Tank
Setpoint Boost" is 10°F, the NURO will initially control the P-K MACH
"DHW Boiler Temperature Setpoint" of 140°F + 10°F = 150°F.
•
DHW Appliance Max Setpoint Temperature
o The NURO control system provides the ability to increment the "DHW Boiler Temperature
Setpoint" in order to maintain the desired domestic hot water temperature. For example,
in periods of high demand, the NURO control may require the P-K MACH
operate to a higher supply temperature setpoint.
o NOTE: The "DHW Boiler Max Setpoint Temperature" must exceed the desired domestic
hot water temperature. For the most efficient and reliable operation, it is recommended to
find the lowest possible appliance setpoint which satisfies the domestic hot water load
requirements.
o NOTE: Setting "DHW Boiler Max Setpoint Temperature" equal to "DHW Boiler Setpoint
Temperature" means the P-K MACH
during DHW operation.
•
Max DHW Appliance Temperature
o This is the maximum allowable supply temperature for the P-K MACH
domestic hot water operation. If the P-K MACH
this value, the appliance will be forced to return to "Standby".
o NOTE: The "Max DHW Boiler Temperature" must exceed the desired domestic hot water
temperature. For the most efficient and reliable operation, it is recommended to find the
lowest possible appliance setpoint which satisfies the domestic hot water load
requirements.
These setpoint temperatures can be adjusted in one of 3 methods:
1. Use the <UP> or <DOWN> arrows to adjust the setpoint in increments of 1°F.
2. Move the slider bar left or right to perform quick adjustments to the setpoint.
3. Press the numeric temperature value to access a numeric 0-9 keypad. Once the keypad is
displayed, the user can enter the desired setpoint value.
After the "DHW Tank Setpoint Temperature", "DHW Tank Setpoint Boost", "DHW Boiler Setpoint
Temperature" and "Max DHW Boiler Temperature" values have been programmed, press <NEXT> to
continue. Proceed to
Section
Revised: January 3, 2020
Released: January 3, 2020
®
®
appliance will always operate to the same setpoint
4.2.3.
Patterson Kelley 2020
All Rights Reserved.
P-K MACH
Technical Service 1.877.728.5351
appliance to a "DHW Boiler Temperature
appliance's supply temperature reaches
®
1004905989 MnR & MnRP 300-399-500-750-
®
Gas Fired Appliance
Section 4.2.2.1
or
®
appliance to a
®
appliance to
®
appliance during
1050 NURO Rev C (Jan-2020).docx
Page 31
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