Slant-Fin GGT User Manual
®
Modular Boiler Submittal Data
GGT SERIES—Gas-Fired/Hot Water
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
heating demands. GGT systems are available in
400,000 to multi-million Btuh gross input. For
additional information, see Caravan Engineering
Manual, pub. C-30 and Caravan gas application
guide, pub. CG-10-HWG.
Standard Equipment
One per module unless otherwise noted:
Pre-assembled cast-iron heat exchanger with
built-in air separators and insulated jacket.
Base.
Flue collector.
Gas burners, gas orifices and manifold assembly.
Combination gas valve including manual shut-off
and pressure regulator.
Pilot adjustment and automatic pilot
thermocouple safety.
Hi-limit control.
Ratings
Gas Caravan ratings and dimensions/hot water models — GGT Series
Consists of
No. of
Model No. *
GGT-400 2 GG-200EC 400 332 1866 280 9.9 14.2 82.0 820
GGT-500 2 GG-250EC 500 402 2333 350 12.0 16.4 80.4 950
GGT-600 2 GG-300EC 600 480 2780 417 14.3 18.4 80.0 1080
GGHT-700 2 GG-350HEC 700 581 3368 505 17.3 20.6 83.0 1230
GGHT
-750 2 GG-375HEC 750 608 3520 528 18.1 20.6 81.0 1230
GGHT-800 2 GG-399HEC 798 654 3786 568 19.5 20.6 82.0 1230
GGT-900 3 GG-300C 900 720 4173 626 21.5 27.6 80.0 1590
GGHT-1050 3 GG-350HEC 1050 872 5052 758 26.0 30.9 83.0 1830
GGHT
-1125 3 GG-375HEC 1125 912 5286 793 27.2 30.9 81.0 1830
GGHT-1200 3 GG-399HEC 1197 981 5686 853 29.3 30.9 82.0 1830
GGT-1200 4 GG-300C 1200 960 5560 834 28.7 36.8 80.0 2140
GGHT-1400 4 GG350HEC 1400 1162 6736 1010 34.7 41.2 83.0 2440
GGHT
-1500 4 GG-375HEC 1500 1216 7046 1057 36.3 41.2 81.0 2440
GGT-1500 5 GG-300EC 1500 1200 6950 1043 35.9 46.0 80.0 2675
GGHT-1600 4 GG-399HEC 1596 1308 7580 1137 39.0 41.2 82.0 2440
GGHT-1750 5 GG-350HEC 1750 1453 8420 1263 43.4 51.5 83.0 3050
GGHT
-1875 5 GG-375HEC 1875 1520 8806 1321 45.4 51.5 81.0 3050
GGHT
-2000 5 GG-399HEC 1995 1635 9473 1421 48.8 51.5 82.0 3050
GGHT-2100 6 GG-350HEC 2100 1743 10104 1516 52.0 61.8 83.0 3660
GGHT-2250 6 GG-375HEC 2250 1824 10573 1586 54.4 61.8 81.0 3660
GGHT-2400 6 GG-399HEC 2394 1962 11373 1706 58.6 61.8 82.0 3660
GGHT-2450 7 GG-350HEC 2450 2034 11788 1768 60.7 72.1 83.0 4270
GGHT-2625 7 GG-375HEC 2625 2128 12333 1850 63.5 72.1 81.0 4270
GGHT-2800 7 GG-399HEC 2793 2289 13266 1990 68.3 72.1 82.0 4270
GGHT-2800 8 GG-350HEC 2800 2324 13472 2021 69.4 82.4 83.0 4880
GGHT-3000 8 GG-375HEC 3000 2432 14093 2114 72.6 82.4 81.0 4880
GGHT-3150 9 GG-350HEC 3150 2615 15157 2273 78.1 92.7 83.0 5490
GGHT-3200 8 GG-399HEC 3192 2616 15160 2274 78.1 82.4 82.0 4880
GGHT-3375 9 GG-375HEC 3375 2736 15860 2379 81.7 92.7 81.0 5490
GGHT-3500 10 GG-350HEC 3500 2905 16841 2526 86.8 103.0 83.0 6100
GGHT-3600 10 GG-399HEC 3591 2943 17060 2559 87.9 92.7 82.0 5490
GGHT-3750 10 GG-375HEC 3750 3040 17620 2643 90.8 103.0 81.0 6100
GGHT-4000 10 GG-399HEC 3990 3270 18953 2843 97.6 103.0 82.0 6100
FOR LARGER SIZES, USE MUL
Htg.
Mod.§
Module
Model
Number
I=B=R Ratings
(MBH)
Gross
Input
Output§
TIPLES OF THE ABOVE.
Module pressure and tempera-
ture gauge (unmounted).
Module pressure relief valve
(ASME) (unmounted). Specify 30,
50 or 100 psi.
Control header (unmounted, one
per system).
Draft hood (unmounted).
Spark ignition system.
I=B-R
Ft.)
Net
Output†
(MBH)
Boiler
Horse-
po
wer
Water
Content
(gal.)
EDR
Water‡
(Sq.
A.G.A.
Combust.
Efficienc
Optional Equipment
Hot water supply and return header
Control panel with automatic lead/lag.
Standing pilot available on:
Vent dampers.
External DHW heat exchanger.
Ship
Wt.
y
assemblies.
GG-200EC, GG-250EC, GG-300EC
* Specify gas by name, "Natural" or
"Propane".
† Net ratings are based on piping and
pick-up allowance of 1.15. Slant/Fin
should be consulted before selecting
a boiler for installation having unusual
piping and/or pic
Ratings must be reduced by 4% at
2,000 ft.
4% f
or every additional 1,000 ft.
ele
vation over 2,000 ft.
‡
Net ratings in square feet based on
emission rate of 150 Btuh/sq. ft.
§
I=B=R gross output.
Modules in excess of 10 should be
piped in parallel in two or more
batteries. For dimension
specifications, refer to Publication
number CG-10-HWG.
Specify pressure relief setting.
Note:
Relief valve is available with
30, 50 or 100 psi.
k-up requirements.
elevation and an additional
Dimensions
Model
Size
200 57
250 59
300 59
350
375 59
399
Design Data
Max. ASME
Working
Pressure:
Dimensions
A B C D
1
⁄2 7 20 83⁄4
3
⁄4 8 231⁄4 101⁄4
3
⁄4 8 263⁄4 12
1
⁄8 9
66
3
⁄4 10 30 133⁄4
3
⁄4 10
62
30
30 13
100 psi
Model No.
GGT-400 4'4" 2 GG-200EC
GGT
-500 4'7" 2 GG-250EC
3
⁄4
13
3
⁄4
GGT-600 4'11" 2 GG-300EC
GGHT-700 5'2" 2 GG-350HEC
GGHT-750 5'2" 2 GG-375HEC
GGHT-800 5'2" 2 GG-399HEC
GGT-900 7'7" 3 GG-300C
GGHT-1050 7'10" 3 GG-350HEC
GGHT-1125 7'10" 3 GG-375HEC
GGHT-1200 7'10" 3 GG-399HEC
GGT-1200 10'3" 4 GG-300C
GGHT-1400 10'6" 4 GG-350HEC
GGHT-1500 10'6" 4 GG-375HEC
GGT-1500 12'11" 5 GG-300EC
GGHT-1600 10'6" 4 GG-399HEC
GGHT-1750 13'2" 5 GG-350HEC
Dimension
L
Powe r
Requirements: 120 volts, 60 Hz,
.34 amps per
module
©Slant/Fin Corp. 2000. Printed in the U.S.A. 1102. Publication No. C-10-MG
SLANT/FIN CORPORATION, Greenvale, N.Y. 11548 • Phone: (516) 484-2600
No. of
Htg.
Mod.§
F
AX:
Consists of
Module
Model
Number
(516) 484-5921
Consists of
Model No.
GGHT-1875 13'2" 5 GG-375HEC
GGHT
-2000
GGHT-2100 15'10" 6 GG-350HEC
GGHT-2250 15'10" 6 GG-375HEC
GGHT-2400 15'10" 6 GG-399HEC
GGHT
-2450 18'6" 7 GG-350HEC
GGHT
-2625 18'6" 7 GG-375HEC
GGHT-2800 18'6" 7 GG-399HEC
GGHT-2800 21'2" 8 GG-350HEC
GGHT-3000 21'2" 8 GG-375HEC
GGHT
-3150 23'10" 9 GG-350HEC
GGHT
-3200 21'2" 8 GG-399HEC
GGHT-3375 23'10" 9 GG-375HEC
GGHT-3500 26'6" 10 GG-350HEC
GGHT
-3600 23'10" 10 GG-399HEC
GGHT
-3750
GGHT-4000 26'6" 10 GG-399HEC
• Canada:
Dimension
Slant/Fin
13'2"
26'6"
L
TD/L
L
No. of
Htg.
Mod.§
10
, Mississauga, Ontar
TEE
5
Module
Model
Number
GG-399HEC
GG-375HEC
www.slantfin.com
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