Burner specifications and settings – Weil-McLain 702CRD-W User Manual
Page 2
Weil-McLain 88 Water and Steam Boilers — Series 2 —
For Light Oil-Fired Burners
2
Part No. 550-142-030/0508
Burner data
Table 1
Boiler
Model
Number
Burner Input
(Forced Draft)
No. 2 Oil
Gph
Low Fire
Firing Rate
No. 2 Oil
Gph
Positive
Pressure In
Firebox
Inches W.C.
Standard
Burner
Model
Designation
Standard
Combustion
Control
Starting
Head
Setting
Approximate
Air Settings
Low Fire
488R
6.90
3.90
0.55
702CRD-W
60200
7/32
5/16
488
7.00
4.00
0.55
702CRD-W
60200
7/32
5/16
588
9.40
5.42
0.61
702CRD-W
60200
13/16
1/2
688
11.80
6.60
0.55
801CRD-W
60200
3/16
1/4
788
14.20
7.00
0.60
801CRD-W
60200
5/8
1/2
888
16.60
8.00
0.85
801CRD-W
60200
1
3/8
988R
17.20
8.90
0.65
1050FFD-W
60200
3/8
3/8
988
18.80
8.92
0.70
1050FFD-W
60200
1/2
1/4
1088R
20.00
9.60
0.70
1050FFD-W
60200
1/2
3/4
1088
21.50
10.10
0.70
1050FFD-W
RM7840L-1018
1/2
3/4
1188
23.50
12.00
0.75
1150FFD-W
RM7840L-1018
1/4
11/16
1288
26.00
12.54
0.75
1150FFD-W
RM7840L-1018
7/16
7/8
1388
28.50
13.44
0.80
1150FFD-W
RM7840L-1018
11/16
7/8
1488
31.00
15.10
0.75
1150FFD-W
RM7840L-1018
1
1
Burner capacities listed for elevations up to 2,000 feet. For
1.
higher elevations, consult local Weil-McLain distributor/
agent or sales office.
Light oil ratings based on No. 2 fuel oil with heating value of
2.
140,000 Btu per gallon.
Boiler-burner unit to be adjusted to achieve +0.10 inches
3.
W.C. pressure at the flue collar, resulting in positive pressure
in firebox as listed.
Combustion Controls:
4.
60200 combustion safety control uses a cadmium sulfide
a.
cell flame detector to monitor oil flame; provides inter-
rupted duty, recycle type operation, latch-up feature,
30-second oil valve delay on, 30-second post purge, alarm
contacts and safety monitor circuit.
RM7840L-1018 combustion safety control (for over 20
b.
GPH applications) uses an ultraviolet flame detector to
monitor oil flame and provides purge timings.
All motors furnished with integral overload protection with
5.
manual reset.
Mechanical pressure atomizing oil control system with on/
6.
off operation, low fire start, high fire run and two-position
air control is standard. Low-High-Low fire operation can
be obtained by addition of SPST temperature or pressure
controller.
120/60/1 control circuit is used for all burners.
7.
Notes for Table 1 and Table 2
Burner specifications and settings