Slant/Fin Caravan LZDF-1100-3-6 Specification Sheet

LZDF SERIES—
A Caravan modular boiler system con-
sists of two or more compact 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 heating
demands. LZDF systems are available in
620,000 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 heat exchanger with
insulated jacket.
Dual fuel gas/oil burner with oil valve, gas
regulator, gas valve, flame safeguard
with UV scanner and on-off fuel transfer
switch (unmounted). Gordon-Piatt burner
model #S4.1-GO has intermittent gas
pilot to light oil and/or gas main flame.
Module pressure gauge and siphon
(unmounted).
System pressure gauge and siphon
(unmounted, one per system).

Ratings

Dual Fuel Caravan ratings and dimensions/steam models–LZDF Series
No.
of
Htg. Input
Model No. Mods MPH
LZDF-600-2-5 2 620
LZDF-750-2-6 2 750
LZDF-850-2-7 2 798
LZDF-900-3-5 3 930
LZDF-1100-3-6 3 1125
LZDF-1300-3-7 3 1197
LZDF-1700-4-7 4 1596
LZDF-2100-5-7 5 1995
* Light oil, 140,000 Btu per gallon.
† 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.
®
Dual Fuel/Steam
RATINGS FOR GAS
I=B=R
Sq. Ft.
Gross Net
Steam
Output Comb. Output
MPH † Efficiency MPH †
500 83.30 375 1563 14.9
592 83.20 444 1850 17.7
620 82.90 466 1946 18.6
750 83.30 563 2346 22.4
888 83.20 666 2775 26.5
930 82.90 699 2917 27.9
1240 82.90 932 3888 37.2 12.00 1680 1348 85.50 1018 4242 40.3 58.0 3834
1550 82.90 1165 4963 46.5 15.00 2100 1685 85.50 1298 5408 50.3 72.5 4794

Modular Boiler Submittal Data

Module pressure re-
lief valve, ASME
(unmounted) 15 psi.
Double swing draft
regulator (unmounted).
Flue brush.
Drain cock (unmounted).
Water level sight glass
(unmounted).
Firing Gross
Horse- Rate Input Output
‡ power GPH* MPH
4.30 602
5.20 728
6.00 840
6.40 896
7.80 1092
9.00 1260 1011 85.50
‡ Based on 150 Btuh per square foot E.D.R. at 170°F average water temperature.
§ Modules in excess of 8 are piped in parallel in two or more banks.
Standard Equipment
Dual fuel changeover thermostat.
Internal tankless heaters.
Two-stage fuel pump in place of one-
stage fuel pump.
ASME Package—includes:
67 Low water cutoff (one per module)
PA404A Pressure control (one per mod.)
67M Low water cutoff (one per system)
L4079B Manual reset pressure
RATINGS FOR OIL
I=B=R
Sq. Ft.
Net
Steam
Comb. Output
MPH Efficiency MPH † ‡
500 85.90 375 1563 14.9 21.4 1506
592 85.80 444 1850 17.7 25.2 1710
674 85.50 506 2108 20.1 29.0 1918
750 85.90 563 2346 22.4 32.1 2259
888 85.80 666 2775 26.5 37.8 2565
758 3158 30.2 43.5 2876
Boiler Recom-
Water Weight mended
Horse- Content with Header
power (gal) Water Size
3"
3"
3"
3"
5"
5"
6"
6"