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CF500/CF800 Burner Manual
Install an oil fi lter sized to handle the fuel unit
gearset fl ow capacity (Table 3) for two-pipe
systems. Size the fi lter for the fi ring rate for one-
pipe systems. Locate the fi lter immediately adjacent
to the burner fuel unit.
Install two high-quality shut-off valves in accessible
locations on the oil supply line. Locate one valve
close to the tank. Locate the other valve close to the
burner, upstream of the fuel fi lter.
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Section: Wire the Burner
Nozzle pressure – The fuel unit nozzle port pressure
is factory set at 140 psig. Some original equipment
manufacturer burner applications may call for a lower
pressure to obtain a required fi ring rate. Do not change
this pressure unless directed to do so by the appliance
manufacturer.
Table 3. Fuel Unit gearset capacity
Fuel unit model number Gearset capacity (GPH)
A2VA-7116
17
A2YA-7916
20
B2VA-8216
21
B2YA-8916
25
B2TA-8248
21
125-200 psig
125-200 psig
3502
Figure 8 - One-pipe oil fl ow with “B” pump
Figure 9 - Two-pipe oil fl ow with “B” pump
125-200 psig
125-200 psig
3503
Legend
a Return port
b Nozzle port
c Oil valve
d Nozzle & adapter
g Inlet port
k Return line to oil tank
p Air bleed valve
Wire the Burner
Electrical Shock Hazard
Electrical shock can cause severe personal injury or death.
Disconnect electrical power before installing or
servicing the burner.
Provide ground wiring to the burner, metal control
enclosures and accessories. (This may also be
required to aid proper control system operation)
Perform all wiring in compliance with the National
Electric Code ANSI/NFPA 70 (Canada CSA C22.1).
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Incorrect Wiring Will
Result in Improper Control
Operation
GeniSys wiring label colors may not match the wire
colors of the burner or other manufacturers’ controls.
The GeniSys Control should be wired according to
the appliance manufacturer’s instructions.
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Install the burner and all wiring in accordance with
the National Electrical Code and all applicable local
codes or requirements. In Canada, comply with the
Canadian Electrical Code, Part 1.
Wire the burner in compliance with all instructions
provided by the appliance manufacturer. Verify
operation of all controls in accordance with the
appliance manufacturer’s guidelines.
See Figure 10 for a typical wiring diagram with
the 7505 oil primary, for reference purposes only.
See Figure 12 for a typical wiring diagram with the
R7184 oil primary, for reference purposes only.
The 7505 primary control with valve-on delay (pre-
time) and burner motor-off delay (post time) requires
a constant 120 volts AC power source supplied to
the BLACK wire on the control. The RED wire goes
to the appliance limit circuit. Please note that other
control manufacturers may use different wire colors
for power and limit connections.
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Burner fuel fl ow
One-pipe systems – See Figure 8 for the fuel fl ow
path.
Figure 8 is based on type B fuel unit.
Oil supply connects to one of the fuel unit inlet ports.
Two-pipe systems – See Figure 9 for the fuel fl ow
paths for two-pipe oil systems.
Figure 9 is based on type B fuel unit .
Oil supply connects to one of the fuel unit inlet
ports. Oil return connects to the fuel unit return port.
(Install the by-pass plug in the fuel unit for two-
pipe systems.)
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