background image

EX 700 - Convert to LP fuel (P-Kit 1201)

|

5

Testing and adjusting

Measuring the inlet gas pressure

 1.  Before performing a combustion test and adjustment, turn off the boiler’s external gas shut-off valve.

 2.  Remove the inlet gas pressure test port plug with a 3 mm Allen key.  Note the fitting has BSP threads.

 3.  Use the supplied fitting to transition from ⅛" BSP to barbed for connection to a manometer.

 4.  Attach a manometer to the inlet pressure test port, and turn on gas to appliance.

Static manometer reading should be ideally 7" w.c. for Natural Gas and 11" w.c. for Propane.

Minimum and maximum static pressure should be between 5" and 14" w.c. Monitor pressure 
throughout the commissioning (start-up) procedure. Pressure may drop up to 1" to 2" w.c. at 
high fire.

 5.  Before firing the boiler, turn the high fire  (gas-air ratio) adjustment screw clockwise ¾ to 1 full turn to 

decrease the fuel (leaning the mixture) before firing up the boiler.

 6.  Before you change the load to manual control, note the load setting.

 7.  Set the load to manual control, and set the heat-out value to the maximum MBH for the boiler. This load 

should be large enough to allow the boiler to operate at high fire for over 10 minutes.

Performing a combustion test

Fuel

High fire

Low fire

CO max PPM

 

Range %

Target %

Range %

Target %

 

Natural Gas

9.0 - 10.0

9.5

8.2 - 9.2

8.7

<150

Propane

10.3 - 11.3

10.8

9.3 -10.3

9.8

< 250

Table 2 

 Combustion test target ranges - CO

2

 / Maximum CO %

 1.  After the boiler is lit and is at high fire, insert the combustion analyzer test probe into the flue gas test 

port. Then adjust the high fire (gas-air ratio) adjustment with a small slot screwdriver according to the

 

Table for Combustion test target ranges - CO

2

 

values. 

Summary of Contents for P-1201

Page 1: ...cable codes and requirements of the authority having jurisdiction If the information in these instructions is not followed exactly a fire an explosion or production of carbon monoxide may result causi...

Page 2: ...mbly There is no propane orifice Figure 1 Gas valve and fan Fan Mixing device Gas high pressure switch Inlet gas pressure test port location of Gas low pressure switch Low fire adjustment zero offset...

Page 3: ...Carefully separate the two parts remove and retain the O ring for re assembly See in image below 7 Remove the four 4 hex bolts that connect the mixing device to the air filter box The gasket should re...

Page 4: ...iler control upon a call for heat or DHW turns on the combustion fan for a 20 second pre purge then energizes the spark electrode and gas valve for a 4 second trial for ignition If the burner does not...

Page 5: ...high fire 5 Before firing the boiler turn the high fire gas air ratio adjustment screw clockwise to 1 full turn to decrease the fuel leaning the mixture before firing up the boiler 6 Before you change...

Page 6: ...esults to confirm correct settings Note Clock the gas meter to confirm full maximum rating plate input Check the measured results with Table for Rated Input of a Converted Boiler 5 Run the boiler to l...

Page 7: ...t 1201 7 Completing and affixing the conversion labels 1 Fill in the conversion labels included in the kit associated with the new fuel type 2 Place the conversion labels onto the boiler at the positi...

Page 8: ...Where to place conversion labels on the boiler 8...

Reviews: