Pellet Stoves Battery Backup
Product Description
The New SF 512 interfaces between a heating appliance (wood pellet or alternative fuel stove) and its AC wall outlet. When AC utility power is present, the SF 512 charges a battery and monitors the wall outlet to detect a power outage. At the moment utility power fails, the SF 512 draws energy from a battery and converts it to enable appliance operation. When utility power returns, the SF 512 automatically switches the appliance back to AC wall outlet power. At the same time, the SF 512 resumes charging the battery to return it to full capacity in preparation for the next power failure. At sites where utility power is not present, the user should determine if there is a sufficient reserve of battery capacity to enable the pellet stove to operate for the desired time period. Consult the Surefire Stove Sentry operating manual for data relating to the size and number of batteries needed.
Typical Applications
- Wood Pellet Stoves
- Kerosene Heaters
- Gas Stoves
- Corn Stoves
- Multi Fuel Stoves
- All Harman Stoves use this Model
SF512 works with:
- Lennox / Whitefield Cascade
- American Energy Magnum Countryside, Magnum Baby Countryside & Magnum T40
- Amaizablaze America's Heat Nesco Iroquois, Cherokee & Cheyenne
- Caneco Mfg Envirotec 5775
- Country Flame Harvester & Crossfire Insert
- Cornglo Industries, LLC Model 3000 & 5000
- Grain Stove Inc. Lil' Cozy Comfort & Grain Comfort
- Golden Grain Corn Stove Model 1101, 1201 & 2004
- All Harman Stoves use this Model
Not recommended for the Quadra-Fire Units
Features
- Rugged Aluminum Housing
- Battery Cables Included
- Works with Common Marine Batteries
- Compact Size
- For Wall Mount or Surface Mount Installation
- 2 Year Factory Warranty
- Works with Most Alternative Fuel Devices
- Instant Automatic Power Transfer
- Supports Full Stove Electrical Capacity
- Does Not Occupy Living Quarter Space
- Can Be Easily Installed
- Silent and Clean Operation
It has to be a deep cycle battery because the plates on an automotive one will sulfate and rot much faster over time.
A 12 volt, deep cycle marine battery up to 200 amps needs to be purchased separately. These can be found at most auto parts stores.
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Model SF 512
Normal model Operation
(Supplying Line Power)
Input Voltage Range 100-128 VAC
Input Current 5.5 A
Charging Current (max.) 12A
Recharge Time (max.) 13 Hours
(FOR 90 A-HR. BATTERY Fully Discharged)
Back Up Mode Operation
(Supplying Battery Power)
Maximum Back Up Power 550 Watts
Maximum Input Current 55 A
Factory Warranty 2year
Dimensions (L x W x H) in. 12 x 7 x 3
Weight (lbs.) 12
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How to Calculate Backup Operating Time |
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Determining operating time requires the following inputs: |
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a) The size of the battery bank |
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i.e. its total Ampere-Hour (A-hr) capacity |
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Ampere-Hour capacity is calculated by adding the A-hr ratings |
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of all of the batteries in the battery bank where the batteries are |
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connected in parallel. |
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(For Parallel Connection See Fig. #1) |
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b) The current draw for the sentry in Amps (C). |
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This can be computed by summing all of the electrical loads |
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which the sentry is expected to operate |
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c) The average operating duty cycle of the system |
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The duty cycle of a system is the ratio of its "on" time |
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e.g. if a water circulation pump will work for one minute and is |
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then off for two minutes, its duty cycle is calculated as follows: |
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d) Once (a) (b) and (c) are known the operating time of |
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the sentry (in hours) can be calculated by the formula: |
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e.g. for a system with 3 batteries each rated 90 A-hr. |
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1) 3 batteries each rated 90 A-hr., A-hr = 3 x 90 |
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2) A load that draws 4 Amps, C=4 |
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3) Duty cycle which operates 1 minute "on" followed |
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by 3 minutes "off", D = 1/(1+3) = 0.25 |
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T (Hours)= (3 x 90)/(4 x 10 x 0.25) = 27 |
A 12 volt, deep cycle marine battery up to 200 amps needs to be purchased separately. These can be found at most auto parts stores.
It has to be a deep cycle battery because the plates on an automotive one will sulfate and rot much faster over time.
