Suntec Aj4 Cc Pump; Priming Pump; Fuel Supply - Riello RLS 70 Installation Instruction

4.9.1 pump
SUNTEC AJ4 CC
1 Suction
2 Return
3 Pressure gauge attachment
4 Vacuum gauge attachment
5 Pressure regulator
A Min. delivery rate at 174 PSI pressure
B Delivery pressure range
C Max. suction
D Viscosity range
E Max fuel oil temperature
F Max. suction and return pressure
G Pressure calibration in the factory
H Filter mesh width
A
B
C
D
E
F
G
H

4.10 Fuel supply

The burner is equipped with a self-priming pump which is capable
of feeding itself within the limits listed in the table at the left.
The tank higher than the burner A
The distance "P" must not exceed 33 ft in order to avoid subjecting
the pump's seal to excessive strain; the distance "V" must not ex-
ceed 13 ft in order to permit pump self-priming even when the tank
is almost completely empty.
The tank lower than the burner B
Pump suction pressures higher than 13 "Hg must not be exceeded
because at higher levels gas is released from the fuel, the pump
starts making noise and its working life-span decreases.
It is good practice to ensure that the return and suction lines enter
the burner from the same height; in this way it will be more improb-
able that the suction line fails to prime or stops priming.
+ H
- H
ft
3
/ "
8
+ 13 100
+ 10 88
+ 6.6 75
+ 3.3 68
+ 1.6 52
0 45
- 1.6 39
- 3.3 26
- 6.6 19
- 10 --
6046
1/4" NPT
1/4" NPT
G 1/8"
G 1/8"
AJ4 CC
GPH 54
PSI 145 - 290
"Hg 13
cSt 2.8 - 75
°F - °C 140 - 60
PSI 29
PSI 174
inch 0.006
L ft
RLS 70 - 100 - 130
Ø inch
1 5
/ " /
2
210 320
180 320
155 320
140 320
110 270
98 240
85 200
55 140
42 104
13 36
Installation
4.9.2

Priming pump

 Before starting the burner, make sure that the tank return
line is not clogged.
 Obstructions in the line could cause damage to the pump
seal. (The pump leaves the factory with the by-pass closed).
 Also check to make sure that the valves located on the suction
line are open and that there is sufficient fuel in the tank.
 For self-priming to take place, one of the screws 3) of the
pump (Fig. 20) must be loosened in order to bleed off the air
contained in the suction line.
7
6
"
8
6
H = Pump/Foot valve height difference
L = Piping length
Ø = Inside pipe diameter
1 = Burner
2 = Pump
3 = Filter
4 = Manual on/off valve
5 = Suction line
6 = Foot valve
Tab. I
7 = Return line
16
5
A
4
5 3
7
B
D2306
Fig. 20
1
2
D1178
Fig. 21