Laars LMH User Manual Download Page 8

User’s Manual - Mascot II Boilers and Water Heaters

Page 7

SECTION 3.
Gas Conversion

3.1 Gas Conversion

Mascot II units can be converted from natural to

propane gas or from propane to natural gas easily in the
field. Please contact the Laars factory for specific
information regarding the gas conversion of an
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 gas
type of the appliance. These stickers are included with
the boiler during shipment.

 WARNING

This conversion shall be installed by a qualified
service agency in accordance with the manufacturer's
instructions and all applicable 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 causing property damage,
personal injury or loss of life.  The qualified service
agency is responsible for the proper and complete
installation of this kit.  The installation is not proper
and complete until the operation of the converted
appliance is checked as specified in the
manufacturer's instruction supplied with the kit.

 AVERTISSEMENT

Ce conversion doit être installé par un organisme de
service conformément aux instructions du fabricant et
tous les codes et les exigences de l'autorité
compétente. Si les informations contenues dans ces
instructions n'est pas suivi à la lettre, un incendie, une
explosion ou de la production de monoxyde de
carbone mais résultat causant des dommages
matériels, des blessures ou des pertes de vie. Le
service est responsable pour la bonne et complète
l'installation de ce kit. L'installation n'est pas correcte
et complète jusqu'à ce que le fonctionnement de
l'appareil converti est vérifiée comme spécifié dans le
manuel d'instruction fourni avec le kit.

Conversion to LP Gas Instructions:

1.

Install "Propane Gas" sticker over the "Natural
Gas" sticker where the gas supply line enters the
appliance.

2.

Fill out gas conversion sticker and install adjacent
to the Rating Plate sticker behind the center door
panel.

3.

Confirm that the gas supply is propane.

4.

Start boiler per lighting procedure shown on inside
front cover or side of appliance.

 

WARNING

Serious injury or death could occur if
CO

2

 levels are not adjusted properly.

5.

With a combustion analyzer, check CO

2

 and CO

levels at both maximum and minimum input. Input
rating will remain unchanged.

6.

Remove lower cover to access gas valve and adjust
as needed. Begin by adjusting the maximum input
CO

2

 then continue by adjusting the minimum input

CO

2

. Any high fire adjustment may affect low fire

settings. Screws for adjustment are shown in

Figure 3.

7.

Reinstall front cover.

Summary of Contents for LMH

Page 1: ...t exceed 13 W C 3 2kPa All installations must be made in accordance with 1 American National Standard Z223 1 NFPA54 Latest Edition National Fuel Gas Code or 2 CSA B149 1 Natural Gas and Propane Instal...

Page 2: ...oxide gas in flue gases which could cause serious injury property damage or death Improper installation and or operation will void the warranty AVERTISSEMENT Assurez vous de bien suivres les instructi...

Page 3: ...luded with each Mascot II The PRV should be installed prior to filling the system Refer to Figures 1 and 2 for PRV locations IMPORTANT The inlet gas pressure to the appliance must not exceed 13 W C 3...

Page 4: ...should be filed with the carrier The carrier not the shipper is responsible for shortages and damage to the shipment whether visible or concealed 1 5 Unpacking The Mascot II is shipped in a single cra...

Page 5: ...loop then the system is ready for operation 12 Refer to local codes and the make up water valve manufacturer s instructions as to whether the make up water valve should be left open or closed 13 Afte...

Page 6: ...Slowly make adjustments in 1 16 of a revolution increments until the CO2 is within the range identified see Figure 3 3 Repeat steps 1 and 2 to confirm that the CO2 ranges are within the required rang...

Page 7: ...Page 6 GAS TYPE HIGH FIRE CO2 LOW FIRE CO2 Natural 9 0 0 offset Propane 10 0 Table 2 CO2 Range Figure 3 Adjustment Screws and Settings for CO2 ADJUSTMENT RANGE High Fire CO2 9 0 8 8 Nat 10 0 9 8 LP L...

Page 8: ...doit tre install par un organisme de service conform ment aux instructions du fabricant et tous les codes et les exigences de l autorit comp tente Si les informations contenues dans ces instructions n...

Page 9: ...rvice Advisors 20 Industrial Way Rochester NH 03867 603 335 6300 Fax 603 335 3355 Applications Engineering 1869 Sismet Road Mississauga Ontario Canada L4W 1W8 905 238 0100 Fax 905 366 0130 www Laars c...

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