Warning, Avertissement – Lennox International Inc. MERIT PLUS MPB3530CNM-B User Manual
Page 23

23
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • MERIT PLUS
®
B-VENT GAS FIREPLACES (MPB33/35/40/45) • INSTALLATION INSTRUCTIONS
Millivolt SIT Systems
Propane Gas to Natural Gas
Conversion Kits
Models
Catalog No.
MPB33
H2010
MPB35
H2012
MPB40
H2014
MPB45
H2016
Table 9: Millivolt Conversion Kits
Millivolt SIT Systems
Natural Gas To Propane Gas
Conversion Kits
Models
Catalog No.
MPB33
H2009
MPB35
H2011
MPB40
H2013
MPB45
H2015
Electronic SIT Systems
Propane Gas To Natural Gas
Conversion Kits
Models
Catalog No.
MPB33
H8631
MPB35
H8633
MPB40
H8635
MPB45
H8637
Table 10: Electronic Conversion Kits
In Canada:
THE CONVERSION SHALL BE CARRIED 
OUT IN ACCORDANCE WITH THE 
REQUIREMENTS OF THE PROVINCIAL 
AUTHORITIES HAVING JURISDICTION 
AND IN ACCORDANCE WITH THE 
REQUIREMENTS OF THE CAN/
CGA-B149.1 INSTALLATION CODE.
LA CONVERSION DEVRA ÊTRE 
EFFECTUÉE CONFORMÉMENT AUX 
RECOMMANDATIONS DES AUTORITÉS 
PROVINCIALES AYANT JURIDICTION 
ET CONFORMÉMENT AUX EXIGENCES 
DU CODE D'INSTALLATION CAN/
CGA-B149.1.
Gas conversion kits are available to adapt 
your appliance from the use of one type of 
gas to the use of another. These kits contain 
all the necessary components needed to 
complete the task including labeling that 
must be affi xed to ensure safe operation.
Kit part numbers are listed here and the 
following steps detail the conversion 
procedure. Refer to the instructions provided 
with the conversion kit when performing any 
gas conversion.
GAS CONVERSION KITS
INSTALLATION INSTRUCTIONS
Step 1. TURN OFF THE GAS SUPPLY TO THE 
APPLIANCE and disconnect power supply at 
the circuit breaker. Ensure appliance is cold. 
CAUTION: THE GAS SUPPLY SHALL BE 
SHUT OFF PRIOR TO DISCONNECTING 
THE ELECTRICAL POWER, BEFORE 
PROCEEDING WITH THE CONVERSION.
ATTENTION: AVANT D’EFFECTUER 
LA CONVERSION, COUPEZ D’ABORD 
L’ALIMENTATION EN GAZ, ENSUITE, 
COUPEZ L’ALIMENTATION ÉLECTRIQUE.
Step 2. Open the lower control compartment 
door (see Figure 19 on Page 13) by pushing 
on the right top corner of the door (the door 
is hinged at the bottom).
[Optional] Remove the control compartment 
door by sliding the hinge pin, located at the 
door’s left side, to the right until it disengages 
from the left corner post hole. Pull the 
control compartment door diagonally to the 
left, away from the fi replace.
Step 3. Remove the front glass door/frame 
from the appliance (see Page 19).
Electronic SIT Systems
Natural Gas To Propane Gas
Conversion Kits
Models
Catalog No.
MPB33
H8632
MPB35
H8634
MPB40
H8636
MPB45
H8638
WARNING
This conversion kit shall be installed by a qualifi ed 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 instruction is not followed exactly, a fi re, explosion or production of 
carbon monoxide may result causing property damage, personal injury 
or loss of life. The qualifi ed service agency is responsible for the proper 
installation of this kit. The installation is not proper and complete until the 
operation of the converted appliance is checked as specifi ed in the manu-
facturer’s instructions supplied with the kit.The qualifi ed service agency 
performing this installation assumes responsibility for this conversion.
AVERTISSEMENT
Cette trousse de conversion doit être installée par un technicien agréé, 
selon les instructions du fabricant et selon toutes les exigences et tous les 
codes pertinents de l’autorité compétente. Assurez-vous de bien suivre 
les instructions dans cette notice pour réduire au minimum le risque 
d’incendie, d’explosion ou la production de monoxyde de carbone pouvant 
causer des dommages matériels, des blessures ou la mort. Le tecnicien 
agréé est responsable de l’installation de cette trousse. L’installation n’est 
pas adéquate ni complète tant que le bon fonctionnement de l’appareil 
converti n’a pas été vérifi é selon les instructions du fabricant fournies avec 
la trousse. Le fournisseur de service qualifi é ayant réalisé l'installation 
assume les responsabilités liées à la conversion.
