Table Of Contents - Montigo L42DF Installation & Maintenance Manual

L42DF* Indoor Gas Fireplace
Safety Alert Key
Introduction .................................................................................3
Installation
Before you Start .................................................................................4
Installation Checklist ...............................................................................4
Section 1:
Installation Overview and Product Dimensions .....................5
Section 2:
Framing the Fireplace .......................................................6 - 8
Clearances ............................................................................7
Installing the Standoffs ..........................................................7
Installing the Nailing Flange Extension ..................................7
Framing the Heat Shield ........................................................8
Section 3:
The Direct Vent System ..................................................9 - 17
Section 3-1: Converting from Top Vent to Rear Vent .............................9
Section 3-2: Installing a Roof mounted Termination .....................10 - 11
▪ Section 3-2-1: Venting Layout .................................................10 - 11
▪ Roof mounted Terminations
Standard Top Vent (no elbows or offsets) ....................................10
Top Vent (two elbows one offset) ................................................10
Top Vent (multi-elbows and offsets) ............................................10
Standard Roof Vent (one elbows no offsets) .............................. 11
Section 3-3: Installing a Wall mounted Termination ......................12 - 17
▪ Standard PTO Installation ........................................................12
▪ Pre-installed MSR Frame .........................................................12
▪ Pre-installed BSR Frame ..........................................................12
▪ Installing MOSR Frame ............................................................12
▪ Installing VSS Termination Shield .............................................12
▪ Installing PTKOG Heat Guard ..................................................12
▪ Section 3-3-1: Venting Layout .................................................13- 16
▪ Top Vent, Wall mounted Graph, L42DF* ...................................13
▪ Top Vent, Wall mounted termination (one elbow) .....................13
▪ Top Vent, Wall mounted termination (multi elbow) ...................13
Top Vent, Wall mounted termination (retracted) ......................14
▪ Top Vent, Wall mounted termination (45° corner) ....................15
▪ Top Vent, Wall mounted termination (-45° corner) ..................15
▪ Rear Vent, Wall mounted Termination Graph ...........................16
▪ Standard Rear Vent, (no elbows or offsets) ..............................16
▪ Rear Vent, Wall mounted termination (two elbows) ..................16
Page 2
NOTICE
You must read and understand this manual prior to installation, operation or
troubleshooting this appliance. Please retain this owner's manual for future reference
and maintenance.

Table of Contents

▪ Section 3-3-2: Venting Components .....................................................17
▪ Section 3-3-3: Heat Shields ..............................................................18
▪ Installing a RHS8 Wall Mounted Heat Shield ...........................18
▪ Installing a RHS101 Wall Mounted Heat Shield .......................18
Section 4:
Wiring ........................................................................19 - 20
▪ SIT - Nova 820 gas control and pilot .....................................19
▪ SIT - Proflame gas control and pilot ......................................19
▪ Installing remote On/Off wall switch ......................................20
▪ Installing HFK Fan Kit ............................................................20
▪ Top / Rear Intake Air Adjustment ...........................................20
Section 5:
Installing the Gas Line .........................................................21
Section 5-1: Fuel Conversion ...............................................................21
Section 5-2: Gas Pressure ...................................................................21
Section 5-3: Gas Connection ...............................................................21
Section 6:
Finishing ..............................................................................22
▪ Finishing around the fireplace ......................................................22
▪ Mantels and Surrounds ................................................................22
Section 7:
Installing and Removing the Door .......................................23
Section 8:
Installing the Accessories ....................................................24
▪ Installing the Firestones ................................................................24
▪ Installing the Optional Burner Cover Kit .......................................24
Section 9:
Operation ......................................................................25 - 26
▪ Start-up Sequence with SIT Nova 820 Continuous Pilot ..............25
▪ Start-up Sequence SIT Proflame Gas valve .................................26
Maintenance
........................................................................27 - 29
▪ General ...............................................................................27
▪ Cleaning ...............................................................................27
▪ SIT Nova 820 Hi-Lo Burner Adjustment........................................27
▪ SIT Proflame Pilot Burner Adjustment ..........................................27
▪ Troubleshooting ...........................................................................28
SIT- Nova 820 Gas Control Valve .............................................28
SIT Proflame Gas Control Valve ...............................................28
▪ Replacement Parts List .................................................................29
Appendix
A. Termination Locations ...............................................................30
B. Warranty ...............................................................................31
C. State of Massachusetts. ...........................................................32
XG0181 - 112811.1