Rheem Low NOX User manual

Low NOx Universal Gas Commercial Water Heaters
Available in Sizes Ranging From 35 - 100 Gallon Tank-Type odels

125,000 BTU/Hr. thru 400,000 BTU/Hr.
Universal Low NOx Gas Commercial Water Heaters are specifically
designed to minimize the difficulty of replacing failed water heaters and are
versatile for new installations. These products are designed for applications
requiring large quantities of hot water.
Construction Features:
• Universal tank design –
maximizes installation adaptability
by offering models with Top, Front
Side and Rear Side Inlet/Outlet
water connections.
• Universal space saver design –
short heights and small jacket
diameters result in greater
installation flexibility.
• Patented multi-flue tank design
–proprietary steel formulation,
patented multi-flue design, and
two coats of high temperature
porcelain enamel to maximize
corrosion resistance result in a
superior heat exchanger design.
• Low profile automatic flue
damper –
low profile design minimizes over-
all product height. New heavy duty
vent hood supports are designed
to withstand rigors of installation.
• Spark-To-Pilot ignition system –
standard on all models. rovides
reliable and energy saving ignition
sequencing by igniting the pilot
only when the thermostat calls for
heat.
• System Sentinel™LED
diagnostic system –
our exclusive diagnostic system,
with glowing LED lights, verifies
system operation sequence by
sequence.
• Full port, full flow brass drain
valve
• Low NOx Burner – The ower
Assist enclosed burner design
incorporates stainless steel multi-
port burner tubes for long term
Low NOx compliant performance.
A sight glass allows for burner
observation and the entire
assembly is easily removable.
A blower guard is provided
against post-installation damage.
The entire design is highly
resistant to the effects of negative
air pressures common to modern
commercial buildings.
Certifications and Ratings:
• Efficiency – these models have been tested according to ANSI test
procedures, and exceed the thermal efficiency and standby loss
requirements of ASHRAE ( art of the Federally mandated Energy olicy
Act (E act)). Also exceeds energy efficiency codes of all states including
California Energy Commission (CEC).
• Safety and construction – these products are design certified by the
CSA: a) For operation at 180°F. b) To meet all safety and construction
requirements of ANSI Z21.10.3. c) As an automatic storage or instanta-
neous water heater. d) As an automatic circulating tank water heater.
e) For operation on combustible floors and in alcove installations.
All models are North Carolina Code compliant.
CERTIFIED FOR A 150 PSI AXI U WORKING PRESSURE
(160 PSI FOR AS E ODELS).
• Optional constructions – ASME construction is available on designated
models.
Continued next page.
Complies With
SCAQ D Rule 1146.2
For Low NOx
Emissions
Small Jacket
Diameters
Short
Floor-to-Vent
Heights
ultiple
Water Connection
Options
(On Selected
Models)

ODEL INPUT
GPH
NU BER BTU/HR. 40°F 50°F 60°F 70°F 80°F 90°F 100°F 110°F 120°F 130°F 140°F
GN75-125 125,000 303 242 202 173 152 135 121 110 101 93 87
GN82-156 156,000 378 303 252 216 189 168 151 138 126 116 108
GN37-200 199,900 485 388 323 277 242 215 194 176 162 149 138
GN76-200 199,900 485 388 323 277 242 215 194 176 162 149 138
GN91-200 199,900 485 388 323 277 242 215 194 176 162 149 138
GN100-200(A) 199,900 485 388 323 277 242 215 194 176 162 149 138
GN72-250(A) 250,000 606 485 404 346 303 269 242 220 202 186 173
GN100-250(A) 250,000 606 485 404 346 303 269 242 220 202 186 173
GN100-270(A) 270,000 655 524 436 374 327 291 262 238 218 201 187
GN65-360(A) 360,000 873 698 582 499 436 388 349 317 291 269 249
GN100-400(A) 399,900 969 776 646 554 485 431 388 353 323 298 277
RECOVERY CAPACITIES (80% thermal efficiency)
TE P. RISE AT 100°F IN GALLONS in.
ODEL TANK CAP. INPUT 5 10 15 20 30 45 60 120 180 to Rec.
NU BER GALLONS BTU/HR. in. in. in. in. in. in. in. in. in. Contents
GN75-125 75 125,000 63 73 83 93 113 143 174 295 416 37
GN82-156 82 156,000 70 83 95 108 133 171 209 360 511 33
GN37-200 35 199,900 41 56 72 88 119 167 214 403 562 11
GN76-200 76 199,900 69 86 102 118 150 199 247 441 635 24
GN91-200 91 199,900 80 96 112 128 161 209 258 451 645 28
GN100-200(A) 100 199,900 86 102 118 135 167 215 264 458 652 31
GN72-250(A) 72 250,000 71 91 111 131 172 232 293 535 778 18
GN100-250(A) 100 250,000 90 110 131 151 191 252 312 555 797 25
GN100-270(A) 100 270,000 92 114 135 157 201 266 332 594 855 23
GN65-360(A) 65 360,000 75 104 133 162 220 307 395 744 1093 11
GN100-400(A) 100 399,900 102 135 167 199 264 361 458 846 1233 15
FIRST TI E DELIVERY (Includes useable storage and recovery for indicated times.)
WATER CONNECTIONS APPROXI ATE
ODEL TOP FRONT REAR SHIPPING WEIGHT
NU BER AB CDEFGHIN/OUT SIDE SIDE STD. AS E
GN75-125 65-1/2 61 26-1/4 25 5 56 3/4 20 1-1/2 1-1/2 1-1/2 480 lbs. N/A
GN82-156 68-13/16 64 26-1/4 25 6 58-5/8 3/4 20 1-1/2 1-1/2 1-1/2 490 lbs. N/A
GN37-200 49-1/4 43-3/8 26-1/4 25 6 37-5/8 3/4 20 1-1/2 1-1/2 1-1/2 405 lbs. N/A
GN76-200 68-13/16 64 26-1/4 25 6 58-5/8 3/4 20 1-1/2 1-1/2 1-1/2 540 lbs. N/A
GN91-200 76-5/16 71-13/16 26-1/4 30-5/8 6 66-3/8 3/4 20 1-1/2 1-1/2 1-1/2 600 lbs. N/A
GN100-200(A) 73-1/16 66-1/8 30-1/4 23-1/4 6 57-1/2 3/4 23 1-1/2 22780 lbs. 835 lbs.
GN72-250(A) 71-1/16 64-1/2 26-1/4 25 6 58-5/8 3/4 20 1-1/2 1-1/2 1-1/2 590 lbs. 630 lbs.
GN100-250(A) 73-1/4 66-1/8 30-1/4 23-1/4 6 57-1/2 3/4 23 1-1/2 22795 lbs. 835 lbs.
GN100-270(A) 73-7/8 66-1/8 30-1/4 23-1/4 6 57-1/2 3/4 23 1-1/2 22805 lbs. 845 lbs.
GN65-360(A) 70-11/16 64-1/2 26-1/4 25 8 58-5/8 3/4 N/A N/A 1-1/2 1-1/2 640 lbs. 680 lbs.
GN100-400(A) 76 68-1/2 30-1/4 32-1/4 8 61-3/4 1 23 1-1/2 22770 lbs. 810 lbs.
DI ENSIONS (Inches)
All odels Require a 120V /1.5 Amp Power Source. (A) Suffix Indicates AS E Tank Construction Available.
Recovery ratings are based on thermal efficiencies obtained in a CSA certified laboratory.
(A) indicates available AS E model.
Recommended specifications (for trade reference only)
Water heater(s) shall be UNIVERSAL model ________________, manufactured by RHEEM-RUUD, having gas input of __________ Btu/hr. and a recovery rate of _____________ G H at a
100°F temperature rise when tested and certified at ____________ thermal efficiency. Water heater(s) shall have a storage capacity of _________ gallons. Water heater(s) shall have the CSA
seal of certification and supplied with a factory installed AGA/ASME rated temperature and pressure relief valve. Tank(s) shall be furnished with a tube bundle having a double coating of high
temperature porcelain enamel and furnished with magnesium anode rods rigidly supported. Water heater(s) shall meet or exceed the thermal efficiency and standby loss requirements of
ASHRAE Standard 90.1b-2001. Tanks shall have a working pressure rating of 150 psi, and shall be completely factory assembled, including a pressure regulator properly adjusted for operation
on ___________ gas with stainless steel burners. Controls will be arranged for safety shutoff in event of pilot failure. Water heater(s) with
inputs less than 360,000 Btu/hr. shall have top, front and rear side inlet/outlet water connections. Water heater(s) shall be covered by a
three year limited warranty against tank leaks.
• Add for AS E construction – Water heater(s) shall be constructed in accordance with the requirements of the ASME
Boiler and ressure Vessel Code, Section IV art HLW.
Limited Warranty
This product features a three year limited warranty against tank leaks. lease refer to Commercial Warranty Information brochure for
complete warranty information.
CLEARANCE TO
CO BUSTIBLES (inches)
ODEL
NU BER SIDE REAR TOP
GN75-125 2212
GN82-156 2212
GN37-200 2212
GN76-200 2212
GN91-200 2212
GN100-200(A) 2412
GN72-250(A) 6612
GN100-250(A) 2412
GN100-270(A) 2412
GN65-360(A) 6612
GN100-400(A) 6612
C
H
E
ABF
D
OUTLET
TOP
INLET
TOP
OUTLET
FRONT SIDE
OUTLET
REAR SIDE
SYSTEM
SENTINEL
T&P
INLET
FRONT SIDE
INLET
REAR SIDE
G
7"
(178mm)
Rheem Water Heaters • 101 Bell Road, Montgomery, Alabama 36117-4305 • www.rheem.com
RINTED IN U.S.A 05/07 W Form No. RR102C-1CA Rev. 3
In keeping with its policy of continuous progress and product improvement, Rheem-Ruud reserves the right to make changes without notice.