Gas Line Installation Requirements - Minimum/Maximum Pressures - kozy heat 55801 Duluth Installation & Operating Manual

RUN THE GAS LINE.
CAUTION: Installation of the gas line must only be done by a qualified person in accordance with local
building codes.
NATURAL GAS: The minimum inlet gas supply pressure: 5.0 inches W.C.
The maximum inlet gas supply pressure: 10.5 inches W.C.
Manifold Pressure: 3.5 inches W.C.
Manifold Pressure (lo setting): 1.7 inches W.C.
Orifice size (0-2000 ft): 42
LP GAS: The minimum inlet gas supply pressure: 11.0 inches W.C.
The maximum inlet gas supply pressure: 13.0 inches W.C.
Manifold Pressure: 10.0 inches W.C.
Manifold Pressure (lo setting): 5.4 inches W.C.
Orifice size (0-2000 ft): 54
This unit is equipped with a 3/8" flexible gas line connection 18" long.
NOTE: The gas line should be run to the point of connection where the manual shut off valve and flexible gas
line will connect.
CAUTION:. See the WARNING label affixed to the flexible gas line for additional installation instructions and
warnings.
1. Run the gas line. An accessible shut off valve (included with the unit) must be installed up stream from the
regulator.
IMPORTANT: DO NOT RUN THE GAS LINE IN A MANNER THAT WOULD OBSTRUCT THE OPERATION OF THE
OPTIONAL FAN.
2. This unit is designed to accept either a 3/8" or 1/2" gas line approved for gas appliances. Consult local
building codes to properly size the gas supply line leading to a 3/8" reduction.
3. Connect the manual shut off valve to the previous run gas line.
4. Connect the flexible gas line (installed on the millivolt board gas valve) to the manual shut off valve.
ALL CONNECTIONS WHETHER FIELD OR FACTORY MADE MUST BE CHECKED FOR LEAKS.
NOTE: This appliance and its individual appliance main gas valve must be disconnected from the gas supply
piping system during any pressure testing of that system at test pressures in excess of 1/2 psi.
NOTE: This appliance must be isolated from the gas supply piping system by closing its equipment shut off valve
during any pressure testing of the gas supply piping systems at test pressures equal to or less than 1/2 psi.
Pressure check taps for both the manifold (outgoing) and inlet (incoming) pressures are located in front of the
gas valve. The right pressure tap is the manifold pressure and the left pressure tap is the incoming pressure.
Follow instructions on page #20 for checking these pressures.
Input Rating: 23,000 BTU/Hr. Minimum Input Rating: 16,000 BTU/Hr.
Efficiency: Steady State: 70.4
Input Rating: 22,500 BTU's
Efficiency: Steady State: 69.96
IMPORTANT:
Page 12
AFUE: 69.65% P-4 AFE: 48.07%
%
Minimum Input Rating: 15,000 BTU/Hr.
AFUE: 69.15
% %
P-4 AFE: 54.51%