
Initial Start-up
60
Initial Start-Up
(continued)
Riello burner calibration
*1
Boiler model
Model No.
VR1-40
VR1-50
VR1-63
Burner model
Riello 40
Series
F5
F5
F10
Fuel type
oil
No. 2 fuel oil
Pump pressure
psig
175
175
175
Oil nozzle
Danfoss
0.85x60°xAH
*3
1.10x60°xAH
1.35x60°xAH
*2
Oil nozzle
Delavan
0.85x60°xA
0.85x60°xW
1.10x60°xA
*3
1.35x60°xA
1.35x60°xW
Hago
0.85x60°xH
1.10x60°xH
1.10x60°xSS
1.35x45°xSS
Oil nozzle flow rate
GPH@psig
1.15@175
1.40@175
1.75@175
Air tube length
inches
mm
6
5
/
16
160
6
5
/
16
160
7
178
Air tube insertion
inches
mm
4¼
108
4¼
108
4¾
121
Turbulator setting
1.0
3.0
2.0
Air gate setting
3.5
3.6
2.8
*1
For VR1-40 and -50 boilers, replace installed nozzle in VR1-33 Riello burner with the appropriate nozzle packaged with
burner.
*2
Factory-installed nozzle.
*3
Nozzles must be installed by installer.
Note:
The Riello burner for the VR1-33 boiler is shipped with factory setting and oil nozzle installed, and should require only
minor adjustments. For VR1-40, and -50 boilers, replace installed nozzle with nozzle packaged with burner.
Barometric draft regulator
When a barometric draft regulator is
used, adjust the barometric draft
regulator such that the over-fire draft is
0.00 to +0.01 “w.c., while the breech
draft is approximately -0.02 “w.c.
During operation of the burner, the
barometric draft regulator installed in
the vent system must move freely.
5
6
7
1
0
4
4
v
1
.0
IMPORTANT