Installation Guide
Table Of Contents
- Safety
 - Specifications
 - Qualified Installing Agency
 - Product Features
 - Product Identification
 - Unpacking
 - Local Codes
 - Water Vapor: A By-Product Of Unvented Room Heaters
 - Air For Combustion and Ventilation
 - Installation
 - Operation
 - Inspecting Burners
 - Care And Maintenance
 - Troubleshooting
 - Parts
 - Replacement Parts
 - Accessories
 - Service Hints
 - Technical Service
 - Warranty
 

www.factorybuysdirect.com
5200373-01A
SPECIFICATIONS
QUALIFIED INSTALLING AGENCY
Only  a  qualied  agency  should  install  and 
replace gas piping, gas utilization equipment 
or accessories, and repair and equipment ser-
vicing. The term “qualied agency” means any 
individual, rm, corporation, or company that 
either in person or through a representative 
is engaged in and is responsible for:
  a) Installing, testing, or replacing gas piping 
or
  b) Connecting, installing, testing, repairing, 
or servicing equipment; that is experienced 
in such work; that is familiar with all precau-
tions required; and that has complied with 
all the requirement of the authority having 
jurisdiction.
PRODUCT FEATURES
SAFETY PILOT
This heater has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. The 
ODS/pilot shuts off the heater if there is not 
enough fresh air.
PIEZO IGNITION SYSTEM
This  heater  is  equipped  with  an  electronic 
piezo  control  system.  This  system  requires 
AAA batteries (provided).
THERMOSTAT HEAT CONTROL
The control  automatically cycles  the  burner 
on and off to maintain a desired room tem-
perature.
2 GAS OPTIONS AVAILABLE
Your heater is equipped to operate on either 
Propane/LP  or  Natural  gas.  The  heater  is 
shipped from the factory ready for connect-
ing to Propane/LP. The heater can easily be 
changed to Natural gas by having your quali-
ed installer follow the instructions on page 
10 and the markings on the heater.
FDF400T-ZC
Gas Type Natural Propane/LP
Maximum Input Rating 32,000 BTU/Hr 32,000 BTU/Hr
Minimum Input Rating 14,500 BTU/Hr 24,500 BTU/Hr
Regulator Pressure Setting 4" W.C. 9" W.C.
Inlet Gas Pressure* 
(inches of water)
Max. 9.5" W.C. Max. 14" W.C.
Min. 5" W.C. Min. 11" W.C.
Ignition Electronic Piezo Ignitor
Heater Dimensions (H x W x D) 29.5" x 29.1" x 15.6"
Carton Dimensions (H x W x D) 31.1" x 31.5" x 18.1"
Stove Weight 69.5 lbs.
Shipping Weight 79.5 lbs.
 * For purposes of input adjustment.










