Prestige SOLO 155/175/250 - ACVMax Boilers
Natural to Propane Instructions
2
1.0 Installation of the Propane Orifice
1. Turn off the electrical power supply to the boiler.
2. Close the manual gas shut off valve to the unit.
3. Remove the front panel of the Prestige by
removing the screws along the bottom edge of
the unit. Pull the bottom of the panel forward
and then lift up to remove the front panel from
the unit.
4. Remove the air inlet elbow from the venturi
using a twist and pull motion.
5. Disconnect the gas supply piping inside the
Prestige enclosure at the brass union located
just below the gas valve.
6. Remove Molex plug from gas valve.
7. Remove the two T-25 Torx head screws used to
mount the venturi / gas valve assembly to the blow-
er. Do not discard the screws. Dismount the venturi
/ gas valve assembly from the blower. See Fig. 1.
There is a gasket between the venturi and the
blower housing. This gasket must be reinstalled
when the venturi is mounted back onto the blow-
er. Use care not to damage the gasket.
8. Using a T-25 Torx wrench remove the three
mounting screws attaching the gas valve to the
venturi. Note the orientation of the gas valve to
the venturi for reference later when the gas
valve is reassembled to the venturi.
9. Install the appropriate brass propane orifice
from Table 1 in the gasket between the gas
valve and the venturi. The black rubber gasket
must remain attached to the gas valve. See Fig.
2.
NOTICE
1
3
3
2
1. Gas Valve
2. Venturi
3. T-25 Torx Head Screws Attaching Gas
Valve/Venturi to Blower Housing
Fig. 1: Prestige Burner Assembly
3
2
1
Fig. 2: Venturi/Gas Valve Assembly
1. T-25 Torx Head Screws Attaching Venturi to
Gas Valve
2. Brass Orifice
3. Rubber Gasket
