Tables - propane/nat gas conversion kits – LAARS NeoTherm NTV (Sizes 150–850 MBTU/h) - Install and Operating Manual User Manual
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N
eo
T
herm
Boilers and Water heaters
NT size (mbtu)
Kit number
80 CA006201
105 CA006202
150 CA006203
199 CA006204
210 CA006204
285 CA006205
399 CA008600
500 CA008600
600 CA008600
750 CA008600
850 CA008600
Table 16a - Propane Gas Conversion Kits
NT size (mbtu)
Kit number
80 CA006206
105 CA006206
150 CA006206
199 CA006206
210 CA006206
285 CA006206
399 CA008600
500 CA008600
600 CA008600
750 CA008600
850 CA008600
Table 16b - Natural Gas Conversion Kits
12. Place the appliance in operation according to the
instructions in Section 10. Check all gas connections for
leaks. Confirm that all fasteners are tight.
Optional Gas Pressure Switches
The high and low gas pressure 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. The gas
pressure 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 gas pressure switch to 3” w.c. For
propane, set the low gas pressure switch to 5” w.c. For natural
and propane, set the high gas pressure 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 field. Some
units require the addition of a gas orifice along with proper
gas valve adjustment. Other units require no additional parts
- only proper gas valve adjustment. Please contact the Laars
factory for specific information regarding the gas conversion
of a particular appliance. If a gas conversion is performed,
the unit must be identified 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.