Install Instructions

Page 51
NEOTHERM Residential Boilers
size (mbtu) Kit number
80 CA006201
105 CA006202
150 CA006203
210 CA006204
Table21. -PropaneGasConversionKits
size (mbtu) Kit number
80 CA006206
105 CA006206
150 CA006206
210 CA006206
Table22. -NaturalGasConversionKits
OptionalPressureGasSwitches
The high and low pressure gas switches are 24V manual reset
switches that act to cut power to the gas valves if the gas
pressure is too low or too high for proper operation.
If your boiler is equipped with the Optional pressure gas
switches, then the Low Pressure Switch will need to be reset.
The pressure gas switches used are integrally vent limited,
and do not require venting to atmosphere. To remove a switch,
remove the screw on the plastic housing and pull the clear
cover off. Disconnect the two wires from the screw terminals.
Twist the switch off the pipe nipple. Reassemble in reverse
order. For natural gas, set the low pressure gas switch to 3”
w.c. For propane, set the low pressure gas switch to 5” w.c.
For natural and propane, set the high pressure gas switch
to 14”.
10.3GasConversion
NeoTherm units can easily be converted from natural to
propane gas or from propane to natural gas in the eld. Some
units require the addition of a gas orice along with proper
gas valve adjustment. Other units require no additional parts
- only proper gas valve adjustment. Please contact the Laars
factory for specic information regarding the gas conversion
of a particular appliance. If a gas conversion is performed,
the unit must be identied with the appropriate gas labels
and a conversion sticker to allow technicians performing
maintenance in the future to properly identify the type of gas
being used in the appliance.