Indirect Storage Tank - UTICA BOILERS MAHF-125 Installation, Operation & Maintenance Manual

8.8 Indirect Storage Tank

Boilers MAHF-125 can be electrically connected to indirect
storage tank as follows:
• Connect DHW priority
9-10 on terminal block M2.
10K Ω
• Insert NTC sensor element in the sensor well of
indirect storage tank.
• Verify exchange capacity of the storage boiler coil is
appropriate for boiler power.
• Adjust DHW temperature +95 °F...+140 °F (+35
°C...+60 °C) by pressing
IMPORTANT: set parameter P03 = 05 as described in:
"PARAMETER SETTINGS".
Sensors used for this boiler are proprietary to
Note
the manufacturer. Use of after market sensors
will diminish boiler performance.
FIGURE 8-7A Kt Indirect Storage Tank
*125 Model shown
A
Heating system
B Three way diverter valve
C Heating water flow
D Heating supply to DHW indirect storage tank coil
E
Heating water return
F Tank
G Optional 10k Ω DHW priority sensor tank
8 - ELECTRICAL CONNECTIONS
10K Ω
sensor NTC to terminals
on boiler Control.
35
240012565 REV A, [05/15/2019]