York ARC 045, Installation Manual

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Access for the gas supply pipe connection
Access for the gas supply pipe connection is through
the opening on the front panel of the unit. -1-.
A special grommet, kept in fan compartment, is pro‐
vided for the gas supply pipe, This grommet should
be placed in the panel at the front of the unit at the
time the gas supply pipe is installed.
Important recommendations for the installation of the gas supply pipe
1 If the supply line needs to carry gas when there is condensation, then a device for its collection and
discharge should be installed. -2-.
2 Install a manual gas supply shut-off valve -3- if required by the current regulations in the country the
unit is being installed in.
3 Install a ground in the gas supply line.
4 Use a wrought iron or steel pipe for the installation of the gas supply line.
5 Before installing the pipe hit the outside with a hammer to get rid of any dirt or scale it might have
inside. Use compressed air to expel any residue and particles that might be there.
6 Apply a moderate amount of sealing paste to the threads of the male part of the joint.
D A N G E R
• Natural gas may contain a small quantity of propane, which is an efficient solvent of lead carbonate
and most common commercial compounds.
• In installations involving wrought iron or steel, a specialised putty should be used to seal them.
• Sealing material that complies with the BS6956 standards, part 5 or equivalent may be used.
7 Purge the air from the gas supply line before using it.
8 Open the unit's main gas supply valve.
9 Apply a soapy water solution to all joints to test for any leaks.
D A N G E R
• DANGER OF EXPLOSION. Never use a flame to verify the absence of leaks in the installation
joints.
• During gas supply line pressure tests with pressures greater than 0,5 PSI (3,5 kPa), the burner
and its manual shut-off valve must be disconnected from the system of gas supply pipes.
Gas. Modification for service with LPG (Liquefied Petroleum Gas, propane gas)
All units with gas heating are specially manufactured to operate with natural gas. The unit can be modified
to operate with LPG (Liquefied Petroleum Gas, propane gas) if necessary. This involves a conversion
kit that is assembled during the installation work.
A specific line should be used for gas supply. Its installation must comply with country and local safety
regulations.
The LPG propane pressure must be at 37 mbar with the unit at full load for it to operate correctly.
Three main factors must be taken into consideration in order to keep the gas pressure values correct:
1 Speed of gas evaporation, which depends on:
a. the temperature of the liquid and
b. the size of the "wet surface" of the container or containers.
1 Installation manual
1.15 Instructions for installation and connection of the unit
24