Slant/Fin GGT Series dimensions Standard Equipment, Optional Equipment, Ratings

® 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-assembledcast-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.

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.

Optional Equipment

Hot water supply and return header assemblies.

Control panel with automatic lead/lag. Standing pilot available on:

GG-200EC, GG-250EC, GG-300EC Vent dampers.

External DHW heat exchanger.

Ratings

Gas Caravan ratings and dimensions/hot water models — GGT Series

		Consists of			I=B=R Ratings
								I=B-R
					(MBH)
		No. of		Module			EDR	Net	Boiler	Water	A.G.A.	Ship
		Htg.		Model		Gross	Water‡	Output†	Horse-	Content	Combust.
Model No. *	Mod.§			Number	Input	Output§	(Sq. Ft.)	(MBH)	power	(gal.)	Efficiency	Wt.
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

*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 pick-up requirements.

Ratings must be reduced by 4% at 2,000 ft. elevation and an additional

4% for every additional 1,000 ft. elevation 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.

Note: Specify pressure relief setting. Relief valve is available with 30, 50 or 100 psi.

FOR LARGER SIZES, USE MULTIPLES OF THE ABOVE.