Reznor OH Unit Installation Manual - Manual (Page 6)

Form I-OH, PN 120390 R5, Page 6
Remove the shipping crate bottom from the heater. Remove the angle clips that attached
the shipping crate to the heater. Re-insert the screws into the heater cabinet.
WARNING: Units must be supported level for proper operation.
Do not place or add additional weight to the suspended
heater.
5.3 Mounting the
Heater
6. Mechanical 6.1 Fuel Tank and Supply Lines
Four methods of piping fuel to an oil-fired heater are illustrated in this Paragraph.
Piping system selection depends on the application but certain systems are recom-
mended for specific installation conditions.
•
The one-pipe arrangement (Paragraph 6.1.1) is used with the standard 1-stage
burner pump.
•
The two-pipe (Paragraph 6.1.2) arrangement can be used with either the standard
1-stage burner pump or an optional 2-stage burner pump.
•
The loop and pressurized systems (Paragraphs 6.1.3 and 6.1.4) may be used
when installing more than one heater and require an additional booster pump for
oil delivery.
Fuel Tank
Oil tanks must be installed in accordance with all local regulations and the National
Board of Fire Underwriters or CSA Standard.
All oil tanks
must include a vent pipe to the outdoors. The lower end of the vent pipe
should not extend more than one inch below the upper most point of the tank. The vent
pipe terminal should be weatherproof and clogproof.
Installation of the fuel tank and piping is the responsibility of the installing contractor.
Pipe Tubing
All piping shall be standard full weight black iron pipe with standard fittings or approved
brass or copper tubing, with UL listed fittings. At least 1/2" iron pipe or 3/8" O.D. cop-
per tubing (1/2" O.D. copper tubing is preferred) having a wall thickness not less than
0.049" shall be used to connect the burner to the tank.
All piping shall be protected from possible injury and shall be rigidly fastened. Where
practical, it should be buried underground or in a concrete floor or placed in a metal-
covered pipe trench. If installed above ground, the pipe must be insulated to avoid
freezing. Do not cover the piping until the burner has been installed and operated so
that any leaks may be detected and corrected. Pipe joints and connections shall be
made tight and only unions and tube fittings of an approved type shall be used. Use
only pipe thread compound resistant to oil. Do not use TEFLON® tape or TEFLON ® -
based pipe dope. (TEFLON ® is a registered trademark of E. I. DuPont de Nemours and
Company).
Oil Filter
Install a UL-listed (U.S.A.) or CSA/USC (Canada) oil filter of generous capacity between
the tank shutoff valve and the burner. For ease of servicing, locate the filter and shutoff
valve close to the oil burner.
Shutoff Valve
Install a readily accessible manual shutoff valve at each point to properly control the
flow of fuel in normal operation and where required to avoid oil spillage during servic-
ing. The valve should close against the supply. If the heater will not be operating for an
extended period of time, close the shutoff valve.
Where a shutoff is installed in the discharge line of an oil pump that is not an integral
5. Suspension
or Mounting
(cont'd)
5.2 Hanging the Heater (cont'd)
If ordered with an optional workbench fuel tank (Option OT) and heater stand (Option
HS), follow the recommendations with the tank and in Paragraph 6.1 for positioning the
tank. Follow the instructions shipped with the stand to assemble the parts.
Set the Model OH heater on the stand to create a unified structure. Follow the stand
instructions to secure the unit.