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
Cat. No.
MPB33
H8849
MPB35
H8850
MPB40
H8851
MPB45
H8852
Millivolt SIT Systems
Natural Gas To Propane Gas
Conversion Kits
Models
Cat. No.
MPB33
H2009
MPB35
H2011
MPB40
H2013
MPB45
H2015
Electronic
SIT Systems
Propane Gas To Natural Gas
Conversion Kits
Models
Cat. No.
MPB33
H8845
MPB35
H8846
MPB40
H8847
MPB45
H8848
In Canada:
THE CONVERSION SHALL BE CAR-
RIED OUT IN ACCORDANCE WITH THE
REqUIREMENTS OF THE PROVINCIAL
AUTHORITIES HAVING JURISDICTION
AND IN ACCORDANCE WITH THE RE-
qUIREMENTS OF THE CAN/CGA-B149.1
INSTALLATION CODE.
LA CONVERSION DEVRA ÊTRE
EFFECTUéE CONFORMéMENT AUX
RECOMMANDATIONS DES AUTORI-
TéS PROVINCIALES AYANT JURIDIC-
TION ET CONFORMéMENT AUX EXI-
GENCES 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 affixed to
ensure safe operation.
Kit part numbers are listed here and the follow-
ing steps detail the conversion procedure. Refer
to the instructions provided with the conversion
kit when performing any gas conversion.
GAS CONVERSION KITS
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 22 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 fireplace.
Step 3.
Remove the front glass door/frame
from the appliance (see
Page 19
).
Step 4.
Carefully remove the logs.
Exercise
care so as not to break the logs
.
Step 5.
Refer to
Figures 28, 29, or 30
.
A.
Remove the grate and sub floor.
B.
Remove the two (2) screws securing the
burner assembly.
C.
Remove the burner assembly with attached
venturi tube.
MILLIVOLT AND ELECTRONIC IGNITION
SYSTEM APPLIANCES
Step 1.
SIT Systems
- Refer to
Figure 38
and
the instructions provided with the SIT Regu-
lator Conversion Kit. Using a Torx T20 driver
to remove and discard the pressure regulator
mounting screws (two screws for electronic
models, three screws for millivolt models),
pressure regulator tower, the diaphragm as-
sembly (if applicable) and the spring. Discard
all removed components.
Electronic
SIT Systems
Natural Gas To Propane Gas
Conversion Kits
Models
Cat. No.
MPB33
H8632
MPB35
H8634
MPB40
H8636
MPB45
H8638
WARNING
This conversion kit 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 instruction is not followed exactly, a fire, 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
installation of this kit. The installation is not proper and complete until the
operation of the converted appliance is checked as specified in the manu-
facturer’s instructions supplied with the kit. The qualified 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 vérifié selon les instructions du fabricant fournies avec
la trousse. Le fournisseur de service qualifié ayant réalisé l'installation
assume les responsabilités liées à la conversion.
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.
