Installation Guide

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5HSE-MAN-013
SPECIFICATIONS
PRODUCT FEATURES
SAFETY PILOT
This heater has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shuto system. The
ODS/pilot shuts o 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
one AAA battery (provided).
THERMOSTATIC CONTROL
Model DF25SMS The control automatically
cycles the burner on and o to maintain a
desired room temperature.
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.
Model DF25SMS
Gas Type Natural Gas Propane Gas
Input Rating, Max. 23,000 Btu/Hr 23,000 Btu/Hr
Input Rating, Min. 14,000 Btu/Hr 19,000 Btu/Hr
Ignition Electronic Piezo Electronic Piezo
Pressure Regulator Setting 4" W.C. 9" W.C.
Inlet Gas Pressure* (inches of water)
(*for purposes of input adjustment)
Maximum 9.5" Maximum 14"
Minimum 5" Minimum 11"
Heater Dimensions (HxWxD) • 27.32" × 25.98" × 16"
Carton Dimensions (HxWxD) • 29.68" × 28.35" × 18.31"
Stove Weight • 66 lbs
Shipping Weight • 73.5 lbs
LOCAL CODES
Install and use heater with care. Follow all
local codes. In the absence of local codes,
use the latest edition of The National Fuel
Gas Code, ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
1 Batterymarch Park
Quincy, MA 02269-9101
This heater is designed for vent-free op-
eration. State and local codes in some areas
prohibit the use of vent-free heaters.
State of Massachusetts: The installation
must be made by a licensed plumber or
gas tter in the Commonwealth of Mas-
sachusetts.
Sellers of unvented propane or natural
gas-red supplemental room heaters shall
provide to each purchaser a copy of 527
CMR 30 upon sale of the unit.
In the State of Massachusetts the gas
cock must be a T-handle type. The State
of Massachusetts requires that a exible
appliance connector cannot exceed three
feet in length.