Slant/Fin LDZO 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 space heating demands.
LDZO systems are available in 602,000 to
multi-million Btuh gross input. For additional
information, see Caravan Engineering
Manual, pub. C-30.
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 space heating demands.
LDZO systems are available in 602,000 to
multi-million Btuh gross input. For additional
information, see Caravan Engineering
Manual, pub. C-30.
Standard Equipment
One per module unless otherwise noted
Pre-assembled cast-iron heat exchanger
Pre-assembled cast-iron heat exchanger
with insulated jacket
Flame retention oil burner, with nozzle;
cadmium sulfide flame detector
Primary burner control
System pressure gauge and siphon
System pressure gauge and siphon
(unmounted, one per system)
Module pressure gauge and siphon
(unmounted)
Module pressure relief valve (ASME)
(unmounted) 15 PSI.
Draft regulator (unmounted)
Flue brush
Flue brush
ASME Required Options
67 Low water cut off (one per module)
PA404A Pressure control (one per module)
67M Low water cut off (one per system)
L4079B Manual reset pressure control
67 Low water cut off (one per module)
PA404A Pressure control (one per module)
67M Low water cut off (one per system)
L4079B Manual reset pressure control
(one per system)
Module drain cock
(unmounted)
Water level sight glass
(unmounted)
LDZO SERIES—Oil-Fired/Steam
Ratings
Oil Caravan ratings and dimensions/steam models — LDZO Series
LDZO-600-2-5
2
4.3
602
500
85.90
375
1563
14.9
21.4
1426
3"
LDZO-750-2-6
2
5.2
728
596
85.80
447
1863
17.8
25.2
1630
3"
LDZO-850-2-7
2
6.0
840
684
85.50
513
2138
20.4
29.0
1838
3"
LDZO-900-3-5
3
6.4
896
750
85.90
563
2345
22.4
32.1
2139
3"
LDZO-1100-3-6
3
7.8
1092
894
85.80
671
2796
26.7
37.8
2445
5"
LDZO-1300-3-7
3
9.0
1260
1026
85.50
770
3208
30.6
43.5
2756
5"
LDZO-1700-4-7
4
12.0
1680
1368
85.50
1035
4313
40.9
58.0
3675
6"
LDZO-2100-5-7
5
15.0
2100
1710
85.50
1319
5496
51.1
72.5
4594
6"
Model No.
No. of
Heating
Modules
Burner
Capacity
(GPH)*
Input
(MBH)
Net
Output
MBH†
Comb.
Efficiency
Sq.Ft
Steam‡
Horse-
power
Boiler
Water
Content
(gal)
Recom-
mended
Header
Size
Weight
with
Water
Gross
Output
MBH
* Light oil, 140,000 Btu. per gallon.
† Net ratings are based on piping and pick-up allowance of 1.33.
† Net ratings are based on piping and pick-up allowance of 1.33.
Slant/Fin should be consulted before selecting a boiler for
installation having unusual piping and/or pick-up requirements.
For higher elevations, input may need to be reduced
installation having unusual piping and/or pick-up requirements.
For higher elevations, input may need to be reduced
‡ Based on 240 Btuh per square foot E.D.R. at 215˚F average
steam temperature.
Modules in excess of 5 are piped in parallel in two or more
banks.
banks.
®
I=B=R
Ratings for No. 2 Oil