Slant/Fin LDWO SERIES Leaflet
Modular Boiler Submittal Data
A Caravan modular boiler system consists of
two or more compact cast-iron boilers that offer
significant advantages in terms of installed
cost, efficiency and reliability. Caravan
systems are based on step-firing just enough
modules to meet hot water or space heating
demands. LDWO systems are available in
602,000 to multi-million Btuh gross input.
For additional information, see Caravan
Engineering Manual, pub. C-30 and Caravan
oil application guide, pub. CG-10-HWO.
two or more compact cast-iron boilers that offer
significant advantages in terms of installed
cost, efficiency and reliability. Caravan
systems are based on step-firing just enough
modules to meet hot water or space heating
demands. LDWO systems are available in
602,000 to multi-million Btuh gross input.
For additional information, see Caravan
Engineering Manual, pub. C-30 and Caravan
oil application guide, pub. CG-10-HWO.
Standard Equipment
One per module unless otherwise noted
Pre-assembled cast-iron heat exchanger
with built-in air separators and insulated jacket
Swing-out/removable burner door
Flame retention oil burner, with nozzle;
Pre-assembled cast-iron heat exchanger
with built-in air separators and insulated jacket
Swing-out/removable burner door
Flame retention oil burner, with nozzle;
cadmium sulfide flame detector
Hi-limit control, auto reset
Primary burner control
System pressure and temperature gauge
Primary burner control
System pressure and temperature gauge
(unmounted)
Module pressure and temperature gauge
Module pressure relief valve (ASME)
Module pressure relief valve (ASME)
(unmounted) Specify 30, 50 or 100 psi.
Draft regulator (unmounted)
Optional Equipment
Hot water supply and return header
Hot water supply and return header
assemblies
Control panel with automatic lead lag
Control header (unmounted,
one per system)
Flue brush
Module drain cock
Module drain cock
(unmounted)
LDWO SERIES—Oil-fired/Hot Water
Ratings
Oil Caravan ratings/hot water models — LDWO Series
LDWO-600-2-5
2
4.30
602
500
2900
435
14.9
31.0
1570
2"
LDWO-750-2-6
2
5.20
728
596
3453
518
17.8
35.6
1790
2"
LDWO-850-2-7
2
6.00
840
684
3967
595
20.4
45.2
2000
3"
LDWO-900-3-5
3
6.40
896
750
4347
652
22.4
46.5
2355
3"
LDWO-1100-3-6
3
7.80
1092
894
5180
777
26.7
53.4
2685
3"
LDWO-1300-3-7
3
9.00
1260
1026
5947
892
30.6
67.8
3000
3"
LDWO-1700-4-7
4
12.00
1680
1368
7933
1190
40.9
90.4
4000
3"
LDWO-2100-5-7
5
15.00
2100
1710
9913
1487
51.1
113.0
5000
3"
LDWO-2500-6-7
6
18.00
2520
2052
11893
1784
61.3
135.6
6000
3"
LDWO-2900-7-7
7
21.00
2940
2394
13880
2082
71.5
158.2
7000
4"
LDWO-3400-8-7
8
24.00
3360
2736
15860
2379
81.7
180.8
8000
4"
Model No.
No. of
Modules
I=B=R
Firing
Rate
#2 Oil
GPH*
Input
EDR
Water †
(Sq. Ft.)
I=B=R
Net
Output‡
(MBH)
Boiler
Horse-
power
Water
Content
(gal.)
Recom-
mended
Header
Size §
Ship
Wt.
Gross
Output
I=B=R Ratings
(MBH)
* Light oil, 140,000 Btuh per gallon.
† Based on 150 Btuh per square foot E.D.R. at 170°F average
† Based on 150 Btuh per square foot E.D.R. at 170°F average
water temperature.
‡ Net ratings are based on a piping and pick-up allowance of
1.15. Slant/Fin should be consulted before selecting a boiler
for installation having unusual piping and pick-up requirements.
§ Modules in excess of 8 are piped in parallel to first eight.
NOTE: For higher capacities, specify any combination of standard
Caravan models shown.
®