2
33D4047
DFX & DBX Series Vent Free Fireplaces
CONTENTS
Important Safety Information .................................... 3
Code Approval ............................................................. 4
Product Features ......................................................... 5
Gas Pressures .......................................................... 5
Gas Specifications .................................................... 5
Ignition Controls ....................................................... 5
Pilot .......................................................................... 5
Thermal Generator ................................................... 5
Fireplace and Framing Dimensions .......................... 6
Preinstallation Information ......................................... 7
What You Will Need .................................................. 7
General Fireplace Installation ................................... 7
Installation Information ............................................... 8
Combustion and Ventilation Air ................................ 8
Fireplace Location .................................................... 9
Clearances ............................................................. 10
Fireplace Installation .............................................. 11
Secure Heater to Floor or Hearth ........................... 12
Connect the Gas ........................................................ 13
Checking Gas Pressure ............................................ 14
Manual Control ....................................................... 14
Thermostat Control ................................................. 14
Millivolt Control ....................................................... 14
Electrical Wiring (Millivolt) ........................................ 15
Connect Optional Wall Switch ................................ 15
Connect Remote Receiver ..................................... 16
Check System Operation ....................................... 16
Final Installation ........................................................ 17
Screen Removal ..................................................... 17
Canopy Installation ................................................. 17
Log Placement ....................................................... 18
Rock Wool Placement ............................................ 19
Flame Appearance ..................................................... 20
Pilot Flame ............................................................. 20
Burner Flame Appearance ..................................... 21
Operating Instructions .............................................. 21
For Your Safety Read Before Lighting .................... 22
Manual Control Lighting Instructions ...................... 23
Thermostatic Control Lighting Instructions ............. 24
MilliVolt Control Lighting Instructions ...................... 25
Match Lighting Instructions ..................................... 26
Maintenance ............................................................... 26
Cleaning and Servicing .......................................... 26
Troubleshooting ........................................................ 27
Replacement Parts .................................................... 28
Firebox ................................................................... 28
DFX24C Millivolt & Manual Control Burner ........... 29
DFX32C Millivolt Burner ......................................... 30
DBX24C T-Stat Burner ........................................... 21
Optional Accessories ................................................ 32
Forced Air Kit .......................................................... 32
Optional Brick ......................................................... 33
Optional Trim .......................................................... 33
Trim Installation ...................................................... 34
Warranty ..................................................................... 36
Thank you and congratulations on your purchase of a
MHSC Fireplace.
PLEASE READ THE INSTALLATION AND OPERATION INSTRUCTIONS BEFORE USING THE APPLIANCE!
IMPORTANT: Read all instructions and warnings carefully before starting installation.
Failure to follow these instructions may result in a possible fire hazard and will void the warranty.
DFX24C and DFX32C gas log appliances described in this manual feature the TRIPLE PLAY BURNER
SYSTEM
®
technology producing a full random yellow flame, full depth ember bed and glowing logs.