800,000 / 1,000,000 Btu/hr BOILER / WATER HEATER
Features and Components
Specifications and Dimensions Table
Submittal Drawings
Performance Charts
Engineering Manual GMI 800L-1ML Nov 2010.doc
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GMI 800L/1ML
Input 800,000 / 1,000,000 Btu/hr
Industrial and Commercial
Stainless Steel Boilers / Water Heaters
Maximum Pressure = 160PSI
Maximum Working Temperature = 210 o F
Key Features
A. Widest range of temperature rise (∆T up to 170 oF) with 20 year thermal shock
warranty
B. Lowest inlet water temperature; any temperature above freezing without any damage
to the heat exchanger assembly
C. Most efficient condensing boiler/water heater up to 98% efficiency
D. Super-low NOx emission (down to 10 ppm) (optional)
E. Extremely low operating noise and vibration levels
F. Most accurate operating temperature controller with accuracy of + 1 oF
G. Standard BMS connections
H. Full stainless steel construction of heat exchanger, casing, headers and ball valves
I. Flexible exhaust location (optional)
J. Sealed combustion
K. Direct vent
Superior Material
A. High grade stainless steel 316/316L for heat exchanger, headers, ball valves and
water connections and 304 stainless steel sheet metal for casing
B. Low maintenance costs
Superior Performance
A.
B.
C.
D.
Cutting edge heat exchanger design
Radial pulse combustion
Highest efficiency at full capacity
Modulating burner
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Standard Components
A.
B.
C.
D.
E.
F.
G.
H.
Complete standard gas train assembly
High temperature limit cut-off with manual reset
ASME approved safety pressure relief valve
Pressure gauge
Digital operating temperature controller
Low water cut off
Gas pressure switch
Air proving switch (air pressure switch)
Standard Warranty
A. 10 year prorated warranty
B. 20 year thermal shock warranty
Optional Features
A.
B.
C.
D.
E.
F.
Sealed combustion
Boiler sequencing controller
BAC net communication interface
Ultra low NOx (less than 10 ppm), CO (less than 5 ppm) burner
Paddle less flow switch
CSD.1, IRI, FM codes compliance capability
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GMI 1ML SPECIFICATIONS AND DIMENSIONS
CGA/AGA Input
Btu/h
1,000,000
CGA/AGA Output
Btu/hr
960,000 (as hot water boiler, tested in
accordance with ANSI Z21.13)
Btu/hr
980,000 (as water heater, tested in accordance
with ANSI Z21.10.3
Boiler Efficiency @ full load
%
96.0
Water Heater Efficiency @ full load
Fuel
Electrical Rating
%
98.0
Natural Gas
120/1/60,less than 12 amps
Heating surface
Boiler Shell Dimensions
V/PH/Hz/
A
Ft2
149.0
Inches
Inches
Inches
68.125 ±¼
25.25 ±¼
64.5±¼
- Width
- Depth
- Height
Shipping Weight1
Supply/Return
Connections
Inches
Inches
Inches
Lbs
Inches
68.125 ±¼
53±¼
86±¼
1550
3 - Stainless Steel Flange, ANSI 150 lbs
Water Content
Gas connection
Gas inlet pressure
Flue connection
Flue duct material
Air supply connection
Maximum working pressure
Maximum working temperature
Minimum inlet water temperature
Recommended water flow rate2
Minimum service clearance
Minimum clearances to combustibles
USG
Inches
Inches WC
Inches
30.5
1.5 NPTF
8 to 14
8 O.D.
Stainless Steel (air tight, corrosion resistant)
N/A
160
210
Any temperature above (32ºF)
18.8 ( For ∆T= 100F)
Top 24, Front 263, Back 24, Floor 0
Top 40, Front 40, Back 10, L.Side 2*,
R.Side* 2, Floor non-combustible.* Add 9”
for the condensate water trap if it is installed
on this side.
-
Width
Depth
Height
Overall Dimensions
Inches
psig
Degrees F
USG/min
Inches
Inches
1. Dry weight of unit
2. Above flow rate is for typical boiler condition. For each case, please consult engineering.
3. Clearance from of the burner.
Engineering Manual GMI 800L-1ML Nov 2010.doc
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GMI 800L SPECIFICATIONS AND DIMENSIONS
CGA/AGA Input
Btu/h
800,000
CGA/AGA Output
Btu/hr
760,000 (as hot water boiler, tested in
accordance with ANSI Z21.13)
Btu/hr
780,000 (as water heater, tested in accordance
with ANSI Z21.10.3
Boiler Efficiency @ full load
%
95.0
Water Heater Efficiency @ full load
Fuel
Electrical Rating
%
98.0
Natural Gas
120/1/60,less than 12 amps
Heating surface
Boiler Shell Dimensions
V/PH/Hz/
A
Ft2
149.0
Inches
Inches
Inches
68.125 ±¼
25.25 ±¼
64.5±¼
- Width
- Depth
- Height
Shipping Weight1
Supply/Return
Connections
Inches
Inches
Inches
Lbs
Inches
68.125 ±¼
53±¼
86±¼
1550
3 - Stainless Steel Flange, ANSI 150 lbs
Water Content
Gas connection
Gas inlet pressure
Flue connection
Flue duct material
Air supply connection
Maximum working pressure
Maximum working temperature
Minimum inlet water temperature
Recommended water flow rate2
Minimum service clearance
Minimum clearances to combustibles
USG
Inches
Inches WC
Inches
30.5
1.5 NPTF
8 to 14
8 O.D.
Stainless Steel (air tight, corrosion resistant)
N/A
160
210
Any temperature above (32ºF)
15.2 ( For ∆T= 100F)
Top 24, Front 263, Back 24, Floor 0
Top 40, Front 40, Back 10, L.Side 2*,
R.Side* 24, Floor non-combustible.* Add 9”
for the condensate water trap if it is installed
on this side.
-
Width
Depth
Height
Overall Dimensions
Inches
psig
Degrees F
USG/min
Inches
Inches
1. Dry weight of unit
2. Above flow rate is for typical boiler condition. For each case, please consult engineering.
3. Clearance from front of the burner.
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Superior Performance
Gasmaster boilers/water heaters offer the highest efficiency rating in the industry. The
certified efficiency range in accordance with ANSI Z21.13 latest addendum is 92% 99.8% depending on the return water temperature. In addition to this super high efficient
performance, Gasmaster products offer the cleanest and the most environmentally
friendly operation without any need for add-on or peripheral components. Gasmaster
boilers/water heaters operate at NOx levels of below 15ppm, with some models having
NOx concentration as low as 6ppm.
Efficiency %
GMI 1ML Boiler Efficiency
100
98
96
94
92
90
88
86
98
95.3
93.5
91.8
50
65
80
95
90.4
89.4
110
88.4
125
87.8
140
I nlet Water Temperature F
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Pressure Drop [ft H2O]
0
20
40
60
80
0
10
20 30 40
80 90 100 110 120 130 140 150 160 170
Flow [GPM]
50 60 70
Pressure Drop vs. Flow
GMI 800L/1ML
Unique Benefits
Unlike conventional boilers/water heaters, Gasmaster’s GMI 800L/1ML boilers/water
heaters are capable of running with an inlet water temperature as low as 1 degree above
freezing point while still providing the outlet water temperature that your system needs.
This enables you to have a greater than 100 oF difference throughout GMI 800L/1ML
boilers/water heaters! Not only can Gasmaster boilers/water heaters handle low inlet
water temperatures, but these low temperatures actually provide efficiencies greater
than 98% while keeping low levels of CO and NOx. The superior and reliable
performance of Gasmaster boilers/water heaters is guaranteed by a prorated 10 year
corrosion and 20 year non-prorated thermal shock warranty for all products.
The CO level generated by the burner is less than 40ppm, and NOx levels less than
10ppm.
The throttling mechanism of Gasmaster’s GMI 800L/1ML boilers/water heaters offers
virtually infinite modulation capability throughout the operating range of the product.
This mechanism reduces the on/off cycles by over 90%; therefore, cold starts and
associated pre-purge periods are almost eliminated, contributing to the boiler’s high
efficiency.
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