Natural Gas - Flagro THC-355DF Operating Instructions Manual

4. The gas must be turned off at the propane supply cylinder(s) when the heater is not in
use. When the heater is to be stored indoors, the connection between the propane
supply cylinder(s) and the heater must be disconnected and the cylinders removed from
the heater and stored in accordance with CSA B149.5, Natural Gas and Propane
ANSI Z223.1/NFPA 54

NATURAL GAS

The regulator should only be used if the supply pressure to the heater is above 14" WC
Connect the regulator to the natural gas supply line.
Gas supply pressure to the heater must be a minimum of 9.0" WC
PIPING:
This heater must be installed by a qualified gas technician following
local codes published by the authority having jurisdiction. Sizing of
supply piping must be determined using the length of pipe run, as
well as total btuh rating of the appliance(s). Appropriate piping
tables must be used to determine size of supply piping, dependant
on the length of run from source.
PRESSURES:
LP INLET PRESSURE:
NG INLET PRESSURE:
This heater must be supplied by pressures indicated on the
approval label. Over pressure may cause controls to fail
FUEL:
This heater will operate on Propane & Natural Gas only.
The manifold pressure is listed on the approval label.
Any replacement parts must be purchased from the manufacturer
or authorized distributor.
HOSES:
All hoses used to connect this heater of fuel supply must be Type 1
approved propane / natural gas hose assemblies
MIN.
11 IN. WC
9.0 IN. WC
4
MAX.
14 IN. WC
14 IN. WC