Fulton Vertical Tubeless (FT-A) Thermal Fluid (hot oil) Heater - Manual (Page 13)

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SECTION 2
FTA-IOM-2013-0227
INSTALLATION
2-7
Utilities
The Gas Supply
Adhere to the following for gas supply (Figure 3) installation:
1. Install gas piping in accordance with all applicable
codes.
2. Ensure pipe and fi ttings used are new and free of dirt or
other deposits.
3. Ensure piping is of the proper size for adequate gas
supply to the gas head assembly. Consult your gas
company for specifi c recommendations.
4. When making gas piping joints, use a sealing
compound resistant to the action of liquefi ed
petroleum gases. Do not use Tefl on tape on gas line
piping.
5. Ensure no piping stresses are transmitted to the
equipment. The equipment shall not be used as a pipe
anchor.
6. Ensure all vent connections on diaphragms, gas valves,
pressure regulators, and pressure switches (gas-fi red
units) are vented per local code.
7. On gas-fi red units with NFPA valve trains, ensure the
vent valve is piped to atmosphere per local code.
8. During any pressure testing of the system at pressures
in excess of 1/2 psig (14 inch W.C.)., disconnect the
heater at the heater manual shutoff valve (located at
the end of the supplied gas train) from the gas supply
piping system.
9. Ensure the supply pressure is regulated by a non-
stacking, tight, shut-off regulator.
10. Arrange gas piping so that it does not interfere with
any cover or burner, inhibit service or maintenance,
or prevent access between unit and walls or another
unit.The burner assembly and gas controls terminate
at a manual stop valve to which the gas supply should
be connected. Piping must be sized for a gas fl ow
consistent with the required BTU/Hr input. Large
pressure drops must be avoided. Fulton recommends
that the supply piping between the pressure regulator
and the inlet to the heater be kept to a minimum. The
minimum required gas pressure at the stop valve varies
with the model of heater. The requirements for FT-A
natural gas-fi red models are 7 to 11 in. w.c.
NOTE: Even when the unit is shut down, the gas supply
pressure must never exceed these values.
NOTE: When operating, the supply pressure must not drop
below these limits: Not less than 11 “ w.c. where 14” w.c is
required. Not less than 50” w.c. where 60” w.c. is required.
Not less than 100” w.c. where 120” w.c. is required.
11. After gas piping is completed and before wiring
installation is started, carefully check all piping
connections, (factory and fi eld), for gas leaks. Use a soap
and water solution.
The Oil Supply
Fuel Oil Viscosity Specifi c
Gravity Sulfur Content
#2 Less
than 31.9
Seconds
Redwood
#1 at 100 F
(38 C) 0.824 to 0.852
at 59 F (15 C) Less than 0.40%
by weight
Adhere to the following for installation:
1. Fuel pipes must be of approved materials and of a
diameter suitable for the quantity of oil being delivered
to the burner and the static head available. See Figure
4.
2. Make fuel connection in accordance with the details on
the enclosed fuel pump cut sheet.
3. Ensure fuel oil piping is in accordance with local/
national requirements. In addition, if a two pipe system
is employed, a check valve must be fi tted into the return
pipe.
4. Meet the maximum pressure allowed at the fuel oil
pump inlet per the National Fire Protection Association
(NFPA).
NOTE: If for some reason the pressure of the fuel supply will
exceed NFPA maximum, fi tting a regulator to the fuel line
must be considered, e.g. when there is a tank situated with an
oil level eight feet (2.4 m) or more above the pump.
5. On units fi tted with NFPA 85 controls, ignition is
obtained by means of a gas pilot. A natural gas or LP
supply is required for these units. The required gas
supply pressure is 7” w.c. If a guaranteed supply of
natural gas is not available, then a supply of bottled