©Johnstone Supply eCatalog 216

HVAC EQUIPMENT Boilers

t NEW

Series 49 Natural Commercial Cast Iron Steam Boiler

• Electronic ignition system • Steam riser tappings located on intermediate sections • Tappings on both end sections allows boiler to be piped right or left return

• Shipped knock-down • Final assembly is completed in the field • Approved for installation to 2,000 ft elevation Note: L60-778 , L60-779 , L60-780 are CSD-1 compliant

Heating Capacity MBH

AHRI Net Ratings MBH Flue Diam.

Order #

Mfg. #

BtuH Input

Gas Type Sections

AFUE

Width

Height

Depth

Wt. Lbs.

L60-775 t 49-299SNKRSU0 299,000 NG L60-776 t 49-350SNKRSU0 350,000 NG L60-777 t 49-399SNKRSU0 399,000 NG L60-778 t 49-450SNKCSU0 450,000 NG L60-779 t 49-500SNKCSU0 500,000 NG L60-780 t 49-550SNKCSU0 550,000 NG

7 8 9

82.0% 246 81.0% 284 81.0% 323 81.0% 365 81.0% 405 81.0% 446

185 213 242 274 304 335

8”

36-9/16” 41-5/8” 46-11/16”

40-3/4” 40-3/4” 40-3/4” 40-3/4” 40-3/4” 40-3/4”

40” 40” 40” 40” 40” 40”

881

6” & 7” 6” & 8” 7” & 8” 8” & 8” 8” & 8”

1008 1123 1239 1354 1469

10 11 12

51-3/4”

56-13/16”

61-7/8”

Hydronic Buffer Tanks Mega-Stor II • Stainless Steel Hydronic Buffer Tank designed for use in a closed loop, hot water space heating system to provide hydraulic separation • Adjustable feet for uneven floors

• 1-1/2” system connections Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. #

Gallons

Diam. 23.5” 23.5” 23.5”

Height

Wt. Lbs.

L95-792 L95-793 L95-794

MSB-030 MSB-050 MSB-075

31.4 52.6 76.3

33.125” 49.75” 68.75”

71 82

115

Indirect Water Heaters Mega-Stor High Efficiency

• Provides more gallons of water after an hour of heating than gas, electric or oil-fired water heaters • Stainless steel tanks and coil come with a limited lifetime warranty • Adjustable aquastat

• Available from 26 to 119 gallons • L99-405 is a horizontal storage tank Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Fig. Order #

Mfg. #

Gallons

First Hour GPH BtuH Output

Diam.

Height

Wt. Lbs.

Indirect Water Heaters A L93-768 MS2-030 30.1

162 192 236 307 497

87,000 101,000 121,000 150,000

23-1/2" 23-1/2" 30-3/4" 23-1/2"

33-1/8" 39-3/8" 49-3/4" 68-3/4" 62-7/8"

69 81

L93-769 L93-770 L93-771 L93-772

MS2-040 37.9 MS2-050 50.6 MS2-075 74 MS2-119 111.3

A A A A

100 130 251

A

B

264,000 30-3/4"

Horizontal B L99-405

MSH-53H 51

203

101,000

23-7/8"

24-3/8"

168

NFB Condensing Fire Tube Boilers • 10:1 turn down ratio • Patented compact stainless steel fire tube heat exchanger "H" stamped to reduce high stress point weld failures common on other boilers • Heat exchanger allows water to fill the entire heat exchanger eliminating the need for extra insulation at the top of the combustion chamber

• Non-metallic drain pan prevents corrosion caused by acidic condensate • 1/2" gas piping for up to 24' in length • Low-noise, lightweight, space-saving design • Field convertible to LP Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

A

B

Heating Capacity MBH

AHRI Net Ratings MBH Flue Diam.

Fig. Order #

Mfg. #

BtuH Input

Gas Type AFUE

Width

Height

Depth

Wt. Lbs.

Energy Star

Residential A N99-200 Commerical B N99-160 A N99-201

PNFB0000051H002 175,000 NG or LP 95.0% 161,000 PNFB0000058H002 199,000 NG or LP 95.0% 183,000 PNFB0000087H001 301,000 NG or LP 97.5% 293,000 PNFB0000116H001 399,000 NG or LP 97.5% 389,000

140,000 2" 159,000 2" 255,000 3" 338,000 3"

17-3/10" 17-3/10"

27-3/5" 27-3/5"

17-3/10" 17-3/10"

121 121

Y Y Y Y

25-1/10" 25-1/10"

32-4/5" 32-4/5"

22-3/10" 22-3/10"

243 278

N99-161

B

554

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