Granby 209101 Installation And Maintenance

INSTALLATION AND MAINTENANCE
GUIDELINES FOR
STEEL TANKS FOR OIL-BURNER FUELS AND OTHER
COMBUSTIBLE LIQUIDS
1. SCOPE
These guidelines apply only to the installation and maintenance of
domestic, aboveground fuel oil tanks manufactured by Granby Industries
to UL80, Steel Tanks for Oil-Burner Fuels and Other Combustible Liquids.
These tanks have an obround shape, are of a single-walled or double-
bottom design, and available in capacities ranging from 120 to 330 gallons.
These tanks must be installed in accordance with NFPA 31, Standard for
the Installation of Oil-Burning Equipment and in compliance with any
applicable local codes or regulations.
The instructions in this document are intended as recommended
guidelines only for tank installation. For more specific installation
instructions, please refer to your local code enforcement agency.
2. TANK INSPECTION
Inspect the tank immediately upon receipt. Minor dents and scratches may
be acceptable. Do not install the tank if damages are thought to affect the
integrity and performance of the tank. Contact your distributor.
3. TANK HANDLING
The tank must be lifted without dragging or dropping to prevent damage.
Obround tanks are to be lifted using the handles provided on the tank
heads.
Do not move a tank unless it is empty.
4. TANK INSTALLATION
Authorities having jurisdiction should be consulted before the installation of
the tank.
The installer shall ensure that all applicable Codes are met prior to
installation.
In most jurisdictions, installation by a technician recognized by the
authority having jurisdiction is mandated. Do-it-yourself installations are not
recommended and must be inspected by the authority having jurisdiction
prior to placing in service.
Only labelled tanks bearing the UL listing mark with a serial number are
eligible for warranty and installation. Under no circumstances shall a used
tank of any design be installed.
4.1. TRANSFER OF PRODUCT
Most premature failures of steel oil tanks are caused by water and sludge
that accumulate at the bottom of the tank.
DO NOT TRANSFER OIL FROM OLD TANK INTO THIS TANK OR RISK
VOIDING WARRANTY
4.2. Removal of temporary tank closures
All tank openings are shipped from the factory with temporary shipping
caps. These caps must be removed prior to tank installation.
4.3. Condensation
Condensation can form in the tank during the shipping and storing
processes. All water and ice must be removed from the tank prior to
installation.
©
2022 GRANBY INDUSTRIES LIMITED PARTNERSHIP
Manufactured by:
Granby Industries
98, rue des Industries, Cowansville
Québec, Canada, J2J 1J9.
Telephone: 450-378-2334
Fax: 450-378-5202
E-mail: service@granbytanks.com
Website: http//www.granbyindustries.com
4.4. General location of the tank
Fuel oil storage tanks can either be installed inside or outside of a building.
Indoor installation is preferable for heating oil applications, resulting in
improved service, increased efficiency, reduced risks and increased life
expectancy of the tank.
Tank location should be chosen in accordance with the following
requirements:
▪
The tank should be placed in an area where it is unlikely to be
adversely affected by normal household activities;
▪
The tank should be placed in an area where it can be visually
inspected from all sides;
▪
Under new NFPA guidelines, any outdoor steel tank fitted with a side
outlet or installed in a top-draw configuration must be a
double-bottom or a double wall tank.
▪
The tank label must be visible;
▪
If possible, tanks should not be located directly under house eaves
where they may be subject to falling snow and ice or dripping water.
Protection should be provided if there are no other placement
alternatives;
▪
Tanks should not be placed in intimate contact with walls or
structures since leaves and other organic matter can accumulate and
cause external corrosion of the tank; and
▪
Tank location shall respect the local code for distance to property
lines, to other energy sources or to other storage systems.
4.5. Foundations
The tank must be properly supported by a level, rigid and non-combustible
base. The base should be designed to prevent uneven settling and to
minimize corrosion of any part of the tank resting on the foundation. A
poured concrete basement floor provides the best option while other
options are also available.
All tanks are at risk from base movement; especially new outside
installations placed on recently disturbed ground. A well-drained sub grade
should be provided for proper drainage. Six inches of crushed, clear,
mechanically compacted stone is recommended. The site should have all
organic materials such as sod or bark removed and the soil mechanically
compacted.
4.6. Tank legs
Our domestic obround tanks are provided with four threaded leg supports.
The tank legs that fit into these supports are Schedule 40 1¼" threaded
black iron pipes with a maximum length of 12". The leg supports installed
on the tank should:
•
provide enough clearance for the tank accessories; and
•
provide for proper drainage slope. The tank must be pitched
longitudinally, towards the drain, at least 1/4 inch per foot of tank
length.
The use of tank cradles is not recommended on any of our tanks.
4.7. Tank piping
Fill, vent and supply piping must respect all applicable codes. Piping shall
be designed so that the tank is not subjected to vacuum or pressure
exceeding 1 PSIG measured at the top of the tank.
When installing a gravity fed oil supply line into the bottom opening of the
tank, the supply line must be constantly sloped downwards until the filter
has been reached. Refer to recommended best practice when installing a
threaded component into the bottom of the tank as described on the label
next to the tank outlet.
Overfill Protection
An overfill-protection device should be provided on every fuel oil supply
tank. When a vent whistle is installed as an overfill-protection device, no
person should deliver fuel oil to the supply tank when the vent whistle does
not function properly. The use of a 6 in. long whistle is recommended for
obround tank models.
4.8. Plugging of remaining tank openings
All unused openings on the tanks must be adequately plugged and sealed
with liquid-tight closures before the tank is put in service.
4.9. Cross-connected Tanks
Two oil tanks may be cross connected in accordance with the installation
requirements and limits specified in NFPA 31, Standard for the Installation
of Oil-Burning Equipment.
Page 1of 2 SI-0015 rév Fa
Revised: 2022-06-23