T pieces to connect inline with hoses and manometer can be purchased through spare parts
T piece pressure switch fitting Pt# 628806
Pressure switch Tube 5mm ID*10mm Pt# 814803
IMPORTANT!!!!!
When using a manometer on a modulating heater the pressure switch must be kept in circuit to ensure an accurate reading (if the pressure sensor is not in circuit the fan will continue to ramp up to try and achieve the desired pressure, but because the sensor is not in circuit will never get there). This is done by fitting a temporary T-piece (Pt# 628806) and pressure switch tube (Pt# 814803) in the suction line.
Fault code history can be accessed:
SETTINGS/SERVICE/GAS HEATER 01/7378 CONT/FAULT LOG
YouTube Video - MagIQtouch Heater Fault Log
