ETERNA L H Y B RID ™ advanced
water
heating
advanced : technology
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Eternal hybrid™ is the only water heating system that combines the best of tank and tankless features in one.
The patented, powerful design is engineered to replace multiple tanks, use less energy and space than one tank and produce endless hot water for multiple applications at once.
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TAN K + T a n kl e s s = ETERNA L H Y B RID ™
* PV model shown
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4
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conventional w at e r h e at e r s
how is the eternal hybrid™ different from conventional single-pass water heaters?
TAN K
TAN K l e s s
Tank water heaters utilize a single‑pass heat exchanger.
Tankless water heaters also exhaust heat with a single‑ pass
Heat is produced from the bottom, then rises through
process. Heat produced by the bottom burner rises through
50 –100 gallons of cold water and exhausts through the
slow moving cold water. Heat and energy is transferred just
top. Heat and energy is transferred just once and wasted
once and wasted in the form of high temperature fumes
in the form of high temperature fumes.
similar to a conventional tank. Water pressure is reduced as
Cold water is deposited from the top and rests at the bottom, resulting in sediment build-up that erodes efficiency, durability and performance with each use. The design limits a tank’s ability to produce endless hot water.
water winds through the coiled copper heat exchanger and the copper pipes eventually fail due to scale build-up. The design limits the ability of the tankless to provide consistent hot water to multiple applications.
WASTED HEAT HOT OUT
COLD IN
HOT OUT
COLD IN BURNER WATER CAVITY BURNER
FAN
a d v a n c e d : E t e r n a l h yb r i d™ s y s t e m
Eternal hybrid is a more effective water heating
»» P a t e n t e d c o u n t e r - f l o w
system. The advanced multi-pass heat exchanger
technology maintains 86%
drives heat downward then recycles it through 44
efficiency and delivers hot
»» Near zero greenhouse gas
water faster than tankless
emissions means Eternal is
units for multiple applications
one of the cleanest burning
at once
appliances on the market
baffled stainless steel pipes for maximum efficiency. Water spreads thinly and evenly around the 44 heating pipes to absorb heat quickly. Cold water flows from the bottom up to prevent sedimentation build-up associated with other designs and the
be PVC vented for easier, more economical installs
»» Half the size of a 50 gallon
»» Stainless steel reservoir is self
tank water heater with 300%
cleaning, maintenance free
higher output
and backed with a 20 year
straight water-flow design eliminates pressure loss
»» Built-in reservoir eliminates
no-leak warranty on stainless
associated with coiled pipes. And because water
cold water sandwich and
steel heat exchanger tank for
flows around the pipes — not through them — there
allows you to build a recircu‑
residential, 10 year warranty for
is no risk of build-up inside the pipes.
lation system with no external
commercial
electric tank »» Multistage safety features »» E x t r e m e l y l o w e x h a u s t temperature allows Eternal to
Eternal hybrid works on-demand and uses a state-of-the-art modulating infrared burner
»» Limited 3 year warranty on all other parts »» 1 year warranty on reasonable labor
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that is triggered by water-flow or thermostat. This premium stainless steel burner is a key to Eternal hybrid’s precise, safe and clean performance
The advanced multi-pass heat exchanger drives heat downward then recycles it through 44 baffled pipes for maximum efficiency
Water fills the reservoir from bottom up and spreads evenly around the 44 heating pipes; producing endless hot water with consistent pressure and temperature
* PV model shown
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advanced : Safety & precision
On-board intelligence monitors performance and responds to changing conditions to ensure safe, reliable and precise operation. Eternal does the worrying and troubleshooting so you don’t have to. »» Triple stage overheat protection »» Oxygen depletion sensor »» Double stage gas valve »» Combustion fan rpm check »» Vent blockage detection »» Temperature and pressure relief valve »» Computer controlled temperature sensors »» Computer controlled mixing valve »» Precise digital temperature settings from 100 to 167°F in 15 steps »» Error code display for easy troubleshooting
TURBO: The fan pressure injects perfectly p re m i x e d a i r a n d f u e l i n t o t h e E t e r n a l combustion chamber. This process creates far fewer by-products and better heat output than conventional methods HEAT EXCHANGER TANK: The powerful and compact design produces an endless flow of hot water at your specified temperature setting
DC TRANSFORMER : The transformer filters out surges from A/C current and provides steady power to the system. The system also has a power-out memory feature so you won’t need to reset the system after a blackout
HOT WATER FLOW COLD WATER FLOW GAS FLOW
SIROCCO EXHAUST
DOUBLE STAGE GAS VALVE: The two stage design ensures your safety. If one stage fails, the second stage will shut down the flow of gas in case of emergency
MIXING VALVE: This electronically controlled valve will draw cold water to lower the tem‑ perature of the water flowing to the outlet if the system determines the temperature to be higher than desired setting LEAKAGE BREAKER: This protective device is wired directly to the transformer. Any eletric‑ ity leakage will cause the breaker to shut the system down at the power source
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a d v a n c e d : PERFORMANCE
E T E RNAL HYBRID ™ IS E NGIN E E R E D TO OUT-PERFORM ALL OTHER WATER HEATERS ON THE MARKET.
100%
98%
ETERNAL TANKLESS
98%
% 92 80%
Pressure maintained at hot outlet This graph illustrates the difference of inlet and outlet
% 80
76% 60%
pressures between Eternal and tankless. Note that as demand increases, the tankless unit starts to lose
40%
% 47
pressure at the outlet.
1TAP 2 TAPS 3 TAPS
105°
104°
ETERNAL TANKLESS
104°
101°
Temperature variation over flow (°F)
100°
rates of mixed hot and cold water usage mimics the pressure drop pattern seen above. Note that under
99°
98°
The temperature variation across different flow 95°
higher demand, the shower temperature cooled by 13 degrees with the tankless.
90°
91° 2 GPM 3.4 GPM 4 GPM
110°
Temperature variation over time (°F)
° 104
° 104
100°
° 98
This graph shows how all 3 types of water heaters perform over time. Only shower tap is used for the first 3 minutes and additional taps are opened at 4
ETERNAL TANK TANKLESS
° 104
90°
° 96
° 98
° 91
° 91
80°
minutes. The temperature variation is most noticeable on the tankless; however, as time progresses, the storage tank water heater runs out of hot water.
70°
60°
° 75 1MIN 4MIN 8MIN
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advanced : Green living
Did you know that home appliances are the fastest growing group of pollution emitters after automobiles? The Union of Concerned Scientists has stated if homes in the US replaced their existing appliances with more efficient models, 175 million tons of heat-trapping gases would be eliminated. Nitrous Oxide (NOx) is identified by the EPA as one of the six main pollutants, and is a contributor to global warming, acid rain, as well as other environmental and respiratory problems. According to SCAQMD, (South Coast Air Quality Management District) a water heater should have 55ppm NOx under maximum combustion. At its lowest, Eternal hybrid emits 5ppm NOx. The low emissions mean Eternal is a highly efficient product that keeps our environment clean and rewards you with energy savings.
W NO O x L
CERTIFIED TO MEET SCAQMD LOW EMISSIONS STANDARD H
Y B RID
Eternal Hybrid
Tankless
Tank
Key construction material
Stainless Steel
Copper
Steel
Efficiency
86%
Avg. 80%
Avg. 60%
Nitrous oxide emissions (ppm)
5 – 30
30 – 40
60 – 90
Carbon monoxide emissions (ppm)
40 – 45
190 – 200
200 – 250
Exhaust Temp (°F)
128 – 155
390 – 410
480 – 500
Comparisons shown are averaged based on typical tank and tankless units
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I n s t a ll a t i o n r e q u i r e m e n t s
A licensed plumber familiar with tank water heaters can install Eternal easily. Eternal is pre-set for NG (optional LP Conversion Kit available for PV models, Lp conversion kit included for DV models) and can be installed indoors or outdoors (OUTDOOR KIT REQUIRED) for maximum flexibility on the jobsite.
GAS SUPPLY
ELECTRICITY SUPPLY
UNIT CLEARANCE
Requires a ¾" gas connection and
R e q u i r e s 1 2 0 VA C ( 6 0 H z ) 0 . 7 A
Install Eternal in accordance with code
s u ff i c i e n t g a s s u p p l y f o r o p t i m a l
electrical supply and must be grounded
requirement and the manufacturer’s
performance; Sufficient BTU supply
to operate properly. Includes 5' cord
recommended clearance as shown in
is crucial to proper installation and
with standard 3-prong connector.
the Operator’s Manual and labeled on
operation of the unit.
COMBUSTION AIR SUPPLY
the unit itself.
WATER SUPPLY
Eternal draws combustion air from its
VENTING MATERIAL
Requires ¾" water connections. A
surrounding. Please ensure sufficient air
Eternal can be installed with either
T h e r m a l E x p a n s i o n Ta n k m a y b e
flow as shown in the Operator’s Manual
4" Schedule 40 PVC, CPVC or ABS
required by your local code.
and install Eternal in accordance with
venting. Termination can be either
code ventilation requirement.
horizontal or vertical.
RECIRCULATION Built-in reservoir tank makes Eternal ideal for closed loop systems.
tYpical installation* PV Model
3/4" gas supply PVC VENT TEMPERATURE AND PRESSURE RELIEF VALVE
3/4" COLD WATER SUPPLY RELIEF VALVE DISCHARGE
3/4" HOT WATER OUTLET
draining valve
* PV model shown
p r o d u c t s p e c i f i c at i o n s Eternal GU32
eternal GU28
eternal GU26
eternal GU20
Eternal GU32DV
eternal GU28DV
eternal GU20DV
86%
Thermal Efficiency
Indoor/Outdoor (outdoor kit req., sold separately)
Installation
Indoor Only
Forced Exhaust Power Vent
Flue System Connection Requirements
eternal GU26DV
Sealed Combustion Direct Vent 3/4" Female
Gas
3/4" Female, 15 to 150 Psi
Water
4" Schedule 40 PVC, CPVC or ABS
Vent
120VAC (60 Hz) 0.7A. Includes 5' cord with standard 3-prong connector, Standby - 8 watts, Maximum - 105 watts
Electricity
Pre-set for NG / LP conversion kit sold separately
Gas Type
236,000 / 47,500
Maximum / Minimum Gas Rate (Input BTU’s)
199,000 / 47,500
180,000 / 47,500
145,000 / 47,500
6.4
Reserve Tank Size (Gal)
Pre-set for NG / LP conversion kit included 236,000 / 47,500
3.8
0.1 – 20.8
GPM Capacity Range
0.1 – 17.5
0.1 – 15.8
180,000 / 47,500
145,000 / 47,500
6.4
NG: 3.5" – 10.5" W.C.
Gas Pressure Requirement
199,000 / 47,500
0.1 – 12.8
3.8
LP: 8" – 14" W.C. 0.1 – 20.8
0.1 – 17.5
0.1 – 15.8
0.1 – 12.8
Electronic Direct Ignition
Ignition System
100 – 167 in 15 steps
Temperature Range
172.9
145.6
180.2
151.8
40.9" x 17.3"x 22.8"
33.5” x 17.3” x 22.8”
40.9” x 17.3”x 22.8”
33.5” x 17.3” x 22.8”
Unit Weight (LBS)
Dimension (HxWxD)
Eternal Hot water Flow Rate Data
25.0
Key Temp (°F) Rise Points
Gallons Per Minute
20.0
15.0
10.0
20°F Rise
35°F Rise
45°F Rise
50°F Rise
60°F Rise
70°F Rise
80°F Rise
90°F Rise
Eternal GU32/ GU32DV
20.8 GPMs
12.1 GPMs
9.4 GPMs
8.3 GPMs
7.0 GPMs
6.0 GPMs
5.2 GPMs
4.6 GPMs
Eternal GU28/ GU28DV
17.5 GPMs
10.0 GPMs
7.8 GPMs
7.0 GPMs
5.8 GPMs
5.0 GPMs
4.4 GPMs
3.9 GPMs
Eternal GU26/ GU26DV
15.8 GPMs
9.5 GPMs
7.4 GPMs
6.3 GPMs
5.3 GPMs
4.6 GPMs
4.0 GPMs
3.5 GPMs
Eternal GU20/ GU20DV
12.8 GPMs
7.3 GPMs
5.7 GPMs
5.1 GPMs
4.3 GPMs
3.6 GPMs
3.2 GPMs
2.8 GPMs
5.0 GU32/32DV GU28/28DV GU26/26DV GU20/20DV
0.0 20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
Temperature Rise (°F)
ETERNAL CERTIFICATIONS & INDUSTRY ASSOCIATIONS
ISO 9001
US Patent No 6,945,197 / © 2009 Grand Hall · In the interest of product development, Eternal product designs, features and specifications are subject to change without notice. Grand Hall USA, Inc. · 3838 W. Miller Road · Garland, Texas, 75041 · Tel: 1-866-946-1096 · Fax: 972-279-8440 · Email: eternalsales@grandhall.com · www.eternalwaterheater.com
Brochure Ver: 06-04-09jm Part Number: BRCA01
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