Table of Contents
Advertisement
(e) when the heater is to be stored indoors, the connection between
the propane supply cylinder and the heater must be disconnected
and the cylinders removed from the heater and stored in
accordance with Standard for the Storage and Handling of
Liquified Petroleum Gases, ANSI/NFPA 58 and CSA B149.1,
Natural Gas and Propane Installation Code.
The appliance and its individual shut-off 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 (3.5 kPa).
The appliance must be isolated from the gas supply piping system
by closing its individual manual shut-off valve during any pressure
testing of the gas supply piping system at test pressures equal or
less than 1/2 psi (3.5 kPa).
A minimum 1/8" NPT plugged tapping, accessible for test gauge
connection, must be installed immediately upstream of the gas
supply connection to the appliance.
4.6. CONNECTION TO EXHAUST DUCT
Exhaust ducts must be in steel and conform to local/national rules.
Efficient combustion and trouble-free working of the burner depend
on efficient flue draft.
The unit must be connected to the chimney flue in compliance with
current legal regulations and in line with the following guidelines:
• The path of the flue pipe smoke should be as short as possible
and should slant upwards (minimum height 1 m);
• There should be no sharp curves in the pipes, and the diameter of
the pipes must never be reduced;
• there must always be a wind deflector to prevent the entrance of
rain and to prevent smoke from being blocked by the wind;
• flue draft must at least equal the level in the Technical
Specifications.
• When the heater is connected to a flue pipe, the flue pipe shall
terminate in a vertical section at least two feet long and sufficient
draft shall be created to assure safe and proper operation of the
heater;
• every heater must have its own chimney;
The following diagrams show possible flue positions:
L-L 265.00-BM
A) Minimum 1 m
B) As short as possible
C) Minimum 1 m
D) Chimney draught H shape
EN
4.7. FIRST START-UP
The heater is supplied after a complete functional test and it's
therefore prearranged for one of the gas (natural or L.P.G.) indicated
in Tab. I: an adhesive label applied on the manual gas selector valve
(Fig. 4) indicates the working gas (usually it's natural gas). Should it
necessary to change the kind of gas (from natural gas to L.P.G or
viceversa) follow the detailed instructions indicated in section
"CHANGING TYPE OF GAS".
Only when the heater has been prearranged according to the proper
working gas it will be possible to carry out the following operations:
• Leak away some gas from the feed pipe;
• Check that the pipe is gas proof;
• Open the gas stopcock and start the hot air generator;
For installation in the U.S.A. at elevation above 2,000 feet (610 m),
the appliance shall be derated 4 per cent for each 1,000 feet (305 m)
of elevation above sea level.
For installation in Canada at elevation above 2,000 feet to 4,500 feet
above sea level, the heater is deratedy reducing the input for the
appropriate fuel in accordance with the rating plate manifold
pressure.
Warning
THE CONVERSION SHALL BE CARRIED OUT BY A
MANUFACTURER'S AUTHORIZED REPRESENTATIVE, IN
ACCORDANCE WITH THE REQUIREMENTS OF THE
MANUFACTURER,
AUTHORITIES
ACCORDANCE WITH THE REQUIREMENTS OF THE
CAN/CGA-B149.1 OR CAN/CGAB149.2 INSTALLATION
CODES.
A conversion label shall be applied adiacent to the Rating Label:
THIS APPLIANCE HAS BEEN CONVERTED FOR USE
AT AN ALTITUDE OF ___________ FEET (ABOVE 2000 FEET)
Orifice size:
Manifold pressure:
Input rate:
Date of conversion:
Type of fuel:
Converted by:
For installation in Canada at elevation above 4,500 feet above sea
level, consult Provincial or Territorial Authorities having jurisdiction.
You can continue and start up the heater only after it has been
prepared it according to the instructions for the work category to be
used.
4.8 CHANGING TYPE OF GAS
This operation may be carried out several times during the working
life of the machine and not only at initial start-up. Therefore, first of
all check the adhesive label attached to the manual gas selector
valve (a) in Fig. (2) to establish the original category of the gas and
then consult Tab. I to identify the supply pressure, the working
pressure, the use conditions of manual valve.
To change kind of gas it is necessary (Fig. 2):
• to remove the sticker on the manual gas selector valve stating the
gas used at that time,
• to remove the screw under the sticker and turn the manual handle
on the correct side according to the condition described in Tab.I and
by following instruction:
PROVINCIAL
OR
TERRITORIAL
HAVING
JURISDICTION
______________________________________
______________________________________
______________________________________
______________________________________
______________________________________
______________________________________
AND
IN
11 / 24
Advertisement
Table of Contents
