LAARS Mighty Therm HH PH Boiler

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Laars Mighty Therm HH/PH Hydronic Boiler

CSI CONSERVATION SYSTEMS INC 407.351.9121 CONTACT BACK HOME

Powerful. Efficient. Reliable. Economical.

The Laars Mighty Therm HH/PH gas-fired volume water heater is a powerful, efficient, reliable and economical hot water source for virtually any residential, commercial or light-industrial application. State-of-the-art atmospheric design and quality steel construction deliver energy-transfer efficiencies as high as 82% and reduce standby losses significantly, resulting in lower operational costs over the long term.

All models feature quiet stainless steel burners, integral finned copper heat exchanger, automatic gas valve(s), removable burner trays, and corrosion-resistant glass-lined or bronze headers.

Safety systems include: ignition safeguard, manual reset high limit, operating temperature control, gas pressure regulator, redundant electric gas valve, water flow sensing, and manual gas shutoff valve.

Controls, combustion chamber, pump and tank (when provided) are warranted for one (1) year; heat exchanger tubes are warranted for five (5) years (warranted against thermal shock for the life of the boiler); and all other parts are warranted for five (5) years.

HH
Standard Boiler
PH
Standard Boiler with Factory-Mounted Pump

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LAARS Mighty Therm HH/PH Hydronic Boiler (Indoor)

LAARS Mighty Therm HH/PH Hydronic Boiler (Outdoor)

HH/PH Performance Ratings
Input, output, and IBR rating in BTUs per hour x 1000 (MBH).

Indoor Models
Model	Input	Output	IBR
0175 0250 0325 0400	175 250 325 400	142 203 263 324	123 176 229 282
0500 0600 0715 0850 1010 1200 1430 1670 1825	500 600 715 850 1010 1200 1430 1670 1825	405 486 579 689 818 972 1158 1353 1478	325 423 504 599 711 845 1007 1176 1285
2000 2450 3050 3500 4050 4500 5000	2000 2450 3050 3500 4050 4500 5000	1639 2009 2501 2870 3321 3690 4100	1425 1747 2175 2496 2888 3209 3565

Outdoor Models
Model	Input	Output	IBR
0175 0250 0325 0400	175 250 325 400	137 195 254 312	119 170 220 271
0500 0600 0715 0850 1010 1200 1430 1670 1825	500 600 715 850 1010 1200 1430 1670 1825	410 492 586 697 828 984 1173 1370 1497	357 428 510 606 720 856 1020 1191 1302
2200 2800 3200 3600 4000 4500	2205 2745 3150 3645 4050 4500	1786 2223 2552 2952 3281 3645	1553 1933 2219 2567 2853 3170

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HH/PH Water Flow Data
Minimum flow in gallons per minute (GPM) required to heat the boiler's supply water by the indicated temperature rise (F°) and the resulting head loss (H/L) across the boiler's heat exchanger.

Indoor Models
Model	Design Temperature Rise Across the Boiler
	20°F		25°F		30°F		35°F
	Head Loss		Head Loss		Head Loss		Head Loss
	GPM	Ft.	GPM	Ft.	GPM	Ft.	GPM	Ft.
0175 0250 0325 0400	14 20 25 31	0.5 2.1 3.4 5.2	11 16 20 25	0.6 1.2 2.1 3.4	9.0 13 17 21	0.5 0.8 1.4 2.3	8 11 15 18	0.3 0.6 1.1 1.7
0500 0600 0715 0850 1010 1200 1430 1670 1825	38 47 56 66 79 94 112 · ·	1.4 1.8 2.5 3.4 4.7 6.5 8.9 · ·	31 37 45 53 63 75 89 102 114	1.1 1.4 1.9 2.5 3.4 4.8 6.5 8.8 10	26 31 37 44 53 62 74 85 91	0.9 1.2 1.5 2.0 2.7 3.7 5.0 6.7 8.0	22 27 32 38 45 53 64 73 81	0.6 0.8 1.0 1.4 1.9 2.6 3.5 4.7 5.5
2000 1 Pass 2000 2 Pass 2450 1 Pass 2450 2 Pass 3050 1 Pass 3050 2 Pass 3500 1 Pass 3500 2 Pass 4050 1 Pass 4050 2 Pass 4500 1 Pass 4500 2 Pass 5000 1 Pass 5000 2 Pass	164 164 201 201 250 · 284 · 332 · 369 · 410 ·	3.9 10.5 5.9 16.4 7.4 18.2 9.3 · 17.2 · 21.8 · 27 ·	131 131 161 161 200 200 230 · 266 · 295 · 328 ·	2.3 7.4 4.2 10.2 6.2 16.4 8.3 · 11.6 · 13.2 · 17.2 ·	109 109 134 134 167 167 189 189 222 222 246 · 273 ·	1.5 4.9 3.3 7.7 4.5 11.7 5.7 15.8 8.1 24 9.4 · 12.2 ·	94 94 115 115 143 143 164 164 190 190 211 211 234 ·	1.0 3.0 2.6 5.7 3.8 8.5 4.8 11.3 5.8 16 7.0 20 9.0 ·

Outdoor Models
Model	Design Temperature Rise Across the Boiler
	20°F		25°F		30°F		35°F
	Head Loss		Head Loss		Head Loss		Head Loss
	GPM	Ft.	GPM	Ft.	GPM	Ft.	GPM	Ft.
0175 0250 0325 0400	14 20 25 31	0.5 2.1 3.4 5.2	11 16 20 25	0.6 1.2 2.1 3.4	9 13 17 21	0.5 0.8 1.4 2.3	8 11 15 18	0.3 0.6 1.1 1.7
0500 0600 0715 0850 1010 1200 1430 1670 1825	41 49 58 69 82 98 117 · ·	1.7 2.3 3.2 3.6 5.0 6.9 9.5 · ·	33 39 47 55 66 78 93 109 119	1.1 1.6 2.2 3.1 3.6 4.9 6.7 9.1 10.4	27 32 39 46 55 65 78 91 99	0.9 1.1 1.6 2.2 3.1 3.6 5.0 6.8 8.3	23 28 33 39 47 56 67 78 85	0.7 0.9 1.1 1.6 2.2 3.1 3.7 5.0 5.7
2200 1 Pass 2200 2 Pass 2800 1 Pass 2800 2 Pass 3200 1 Pass 3200 2 Pass 3600 1 Pass 3600 2 Pass 4000 1 Pass 4000 2 Pass 4500 1 Pass 4500 2 Pass	179 179 222 222 255 · 295 · 328 · 365 ·	4.8 13.0 7.4 19.5 10.2 · 14.2 · 16.6 · 21.3 ·	143 143 178 178 204 204 236 · 262 · 292 ·	3.6 8.5 5.0 13.2 6.8 18.1 9.3 · 10.8 · 14.3 ·	119 119 148 148 170 170 197 197 219 219 243 ·	2.7 6.1 4.0 9.3 5.0 12.0 6.3 17.8 7.7 21.5 9.9 ·	102 102 127 127 146 146 169 169 187 187 208 208	2.1 4.5 3.3 7.0 4.1 9.2 5.1 12.7 5.8 15.9 7.0 19.8

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HH/PH Connection Sizes and Weights
Connection sizes and approximate shipping weight.

Indoor Models
Model	Connections Inches				Weight Pounds
Model	Nat	Pro	Water	Vent	HH	PH
0175 0250 0325 0400	½-¾ ¾ ¾ ¾	½ ½ ½ ½	1½ 1½ 1½ 1½	6 7 8 9	255 285 325 360	275 305 345 380
0500 0600 0715 0850 1010 1200 1430 1670 1825	1 1 1 1-1¼ 1¼ 1¼ 1¼ 1¼-1½ 1¼-1½	¾-1 ¾-1 ¾-1 ¾-1¼ 1-1¼ 1-1¼ 1¼ 1¼ 1¼	2 2 2 2 2½ 2½ 2½ 2½ 2½	10 12 12 14 16 16 18 18 18	612 702 750 830 945 995 1080 1175 1270	745 835 905 955 1075 1200 1345 1430 1480
2000 2450 3050 3500 4050 4500 5000	1½ 1½-2 2 2 2-2½ 2½ 2½	1¼-1½ 1½ 1½ 1½ 2 2 2	4 4 4 4 4 4 4	22 24 26 28 30 32 34	1815 1950 2100 2237 2555 2750 3050	N/A

Outdoor Models
Model	Connections Inches			Weight Pounds
Model	Nat	Pro	Water	HH	PH
0175 0250 0325 0400	½-¾ ¾ ¾ ¾	1½ 1½ 1½ 1½	1½ 1½ 1½ 1½	255 285 325 360	275 305 345 380
0500 0600 0715 0850 1010 1200 1430 1670 1825	1 1 1 1 1¼ 1¼ 1¼ 1¼ 1¼	2 2 2 2 2½ 2½ 2½ 2½ 2½	2 2 2 2 2½ 2½ 2½ 2½ 2½	751 821 906 1000 945 1185 1330 1490 1630	855 965 1050 1085 1155 1275 1545 1655 1715
2200 2800 3200 3600 4000 4500	1½-2 1½-2 2 2-2½ 2½ 2½	4 4 4 4 4 4	4 4 4 4 4 4	2300 2670 2750 3175 3380 3790	N/A

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Central Florida Representative:	Manufacturer:
Conservation Systems, Inc. 5850 Lakehurst Drive, Suite 120 Orlando, FL 32819-8386 407.351.9121 Phone 407.352.6391 Fax www.csiworldwide.com	Laars Heating Systems Co. A subsidiary of Bradford White Corporation 1355 Kuehner Drive Simi Valley, CA 93063-4478 1-800-900-9276 www.laars.com

Specifications subject to change without notice.
Please read our Terms of Sale notice carefully before placing an order.
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