Question about Heating & Cooling

1 Answer

Air Conditioner power rating

We have a Rinnai REC 500, several years old.

1. In terms fo how air conditioning is rated now, what is the equivalent power rating (kW) of this machine?

The room is 7.6m X 5.5m X 2.4m(ceiling) and the A/C doesn't seem adequate on really hot days.

2. What is optimum output rating for a room that size?

regards,

John

Posted by on

  • JPW1 Nov 25, 2007

    So, have you any answers to my question?


    1. In terms of how air conditioning is rated now, what is the equivalent power rating (kW) of this machine?

    I'm not getting the relationship between BTUs and KWs.

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 709 Answers

Hi JPW,

Your room should be handled well by a 12000 BTU unit.

Posted on Nov 24, 2007

  • Greg Stokes
    Greg Stokes Nov 24, 2007

    To add you have over 41 Square meters, so you will need over 3.5KW to cool it. This should be bigger than 12000 BTU like I said earlier.

  • Greg Stokes
    Greg Stokes Nov 25, 2007

    1 Ton equals 12000 Btu equals 3.5KW. I cannot find any information on the Rinnai REC500. From the model number, I can only assume it is 0.5 ton or 6000 BTU. Where REC1000 according to my assumption would be 1 Ton, 12000 BTU, and 3.5KW. I calculated your Square meterage to be about 42 Sq. Meters. 12000 BTU is good for 37 Sq meters. In all honesty I believe you should look at the label on the Rinnai and see what the actual Kw Rating is. If it is less than 3.5 KW then it is not enough. If you look at the relationship between 3.5KW and 37 Sq. Meters, then 4 KW should work on 42 Sq. Meters. I hope this helps you. I have dug up a lot of info to cover this Solution. Basically if you go with a 4.5 Kw, that will be overkill.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My Oman generator overheats and shuts down if I plug my battery charger in and have my air conditioning on and or coffee maker


to start with with an air conditioner running (2000 +watts ) plus a coffee machine (1500 watts ) you are looking at 3500 + watts of power used from the generator
the genset has to be of a minimum of 4500 watts to run full time with out over heating
never mind what the rating says on the side, that rating is surge rated and the duty cycle is around 500 watts less than that figure
So if your gen set is 3500 watts the power is at surge power and that will overheat the genset
Of course you haven't mentioned the rating of the set , but overloading is the main reason for over heating

Jun 06, 2016 | Electrical Supplies

Tip

Air Conditioner SEER Seasonal Energy Efficiency Ratio


Energy consumption for home air conditioning accounts for almost 5% of all the electricity produced in the USA. Energy Policy Act mandates minimum energy efficiency standards for commercial buildings, using research and standards developed by the American Society of Heating, Refrigerating, and Air Conditioning Engineers. Energy Star qualified central air conditioners have a higher seasonal efficiency rating (SEER) than standard models, which makes them about 14% more efficient than standard models. Energy efficiency specialists with certified training on retrofits and energy savings on both residential and light commercial units may enable you to save up to 50 percent on your air conditioning bills with the use of a high efficiency energy system. Substantial energy savings can be obtained from more efficient systems.

SEER (Seasonal Energy Efficiency Ratio) is related to the Energy Efficiency Ratio (EER), which is the ratio of output cooling in Btu/Hr and the input power in watts W at a given operating point and also to the coefficient of performance (COP) commonly used in thermodynamics. SEER rating more accurately reflects overall system efficiency on a seasonal basis and EER reflects the system’s energy efficiency at peak day operations.

The SEER rating is the Btu of cooling output during a typical cooling-season divided by the total electric energy input in watt-hours during the same period. SEER is related to the Energy Efficiency Ratio (EER), which is the ratio of output cooling in Btu/Hr and the input power in watts W at a given operating point and also to the coefficient of performance (COP) commonly used in thermodynamics. SEER rating more accurately reflects overall system efficiency on a seasonal basis and EER reflects the system’s energy efficiency at peak day operations. The higher the SEER number, the greater the efficiency of your unit. Therefore you will realize greater energy savings. The higher efficiency your product, the lower your long-term energy costs will be. Both central AC and air source heat pumps are rated according to seasonal energy efficiency ratio (SEER).

Before you consider upgrading your cooling equipment, the cheapest way to save money and energy from cooling is to reduce the need for mechanical air conditioning in the first place. Ask your contractor about a variable speed air handler, which will improve comfort and efficiency and allow continuous air filtering at minimum energy cost. Also, because ducts are often responsible for a lot of wasted energy, make sure you hire a contractor who knows about high-efficiency installations. If your central air conditioning unit is more than 12 years old, replacing it with an Energy Star qualified model could cut your cooling costs by 30 percent.


on Dec 14, 2009 | Heating & Cooling

1 Answer

I have a LG LWHD1500ER window air cond. and am wondering if I can plug it into a plug in my bedroom that has nothing else plugged into it? I don't know what a dedicated circuit means?


When you say dedicated circuit, you should have an electrical outlet that was installed just for your air conditioner. This outlet must have it's own circuit breaker that has higher ampere ratings. This ampere rating must correspond to your air condition horse power (HP) e.g. .75 hp, 1 hp, 1.5 hp, 2 hp. You should consult a qualified electrician for your safety.

Jul 02, 2011 | LG LWHD1500ER Wall/Window Air Conditioner

1 Answer

1 gallon of gas is equivalent to how many hours of heat? thank you


one gallon of gas equates to 92,000 Btu's. You heater on high burns at 22,000 Btu's. Because it modulates between 9,000 and 22,000 it's tough to come up with an exact, however I would guess an average of 4.5 to 6 hours per gallon.

Jan 07, 2011 | Rinnai EnergySaver 556 Air Conditioner

1 Answer

Will the Grundfos RCP-96 model work with my Rinnai tankless heater model # C85e-1?


Grundfos RCP-96 has Flow range: 0 - 27.5 U.S. GPM
According to Amazon spec sheet:
http://www.amazon.com/Grundfos-RCP-96-UP515-55SFC-Recirculator-Timer/dp/B00128BJAO

Most tankless require .4 GPM to start burner and .25 GPM to maintain burner
Rinnai does not show C85e-1 so you will have to consult your manual to see minimum water flow requirement.
http://www.rinnai.us/tankless-water-heater/
Sample manual from Rainnai mentions 'minimum flow rate' several times but doesn't give specific number. Yet promotion blurb on page 1 says "Ultra operates at a lower minimum flow rate."
http://www.rinnai.us/documentation/downloads/U290-665x0200_Condensing_Manual_EN_FR_1-2010.pdf
Another rinnai manual mentions flow rate several times in troubleshoot section yet fails to define what that rate is:
http://www.rinnai.us/documentation/downloads/U287-1833_VB_Series_R75LSi_R94LSi_R98LSi_Manual_EN_FR_EN_FR.pdf

It might seem that tankless promoters are CTA by failing to mention specific flow rate numbers.
I think tankless promotion is a definite overachiever, and vague flow rate is one tiny example.
It proves the necessity of reading whole manual and asking questions before buying a tankless.
There's another factor to consider:
All performance numbers are based on new products in ideal circumstance, and not based on a 4 year old product located in your home.

Your flow rate may vary, especially over time, and especially if water in your area is not crystal clear, and you are not diligent with correct water softener and filter.
Many factors can affect flow rates: water pressure, number of elbows, clogs in the line, sediment, size of pipe, aireators, water-saving shower heads, local water conservation policies, water well pressure, MUD district pressure issues, your home located near end of a water main, etc.

Read tankless efficiency vrs water softener
http://waterheatertimer.org/Battelle_Final_Report.pdf
Image of tankless parts vrs tank parts
http://waterheatertimer.org/images/Compare-water-heater-parts.jpg
Bradford White tankless vrs tank side by side
Lime scale does not flush out of tankless
Tankless must have water conditions with less than 11 grains hardness
"Savings falls far short of a payback," 'without comparing service costs'
http://www.pmengineer.com/Articles/Cover_Story/8cf9e86f7c298010VgnVCM100000f932a8c0____
geno_3245_197.jpg Sediment clogs tankless pressure sensor without softener.

Dec 28, 2010 | Grundfos RCP-96 Recirculation Pump for...

1 Answer

I purchased a new air conditioning system last year. After only 8 months of air conditioning, the coils need cleaning. My previous air condition never needed it's coils cleaned. Does this sound normal for...


Cleaning the coils with in the first year no. Rec to have it service once a year though. Cleaning them every other year. Look at them if you take a flash light and can see light thought the other side they should be good. You can also take your garden hose and clean them your self. Just dont get to close that you bend the fins.

Aug 31, 2010 | American Standard WCZ036F Air Conditioner

1 Answer

When the control is set on air conditioning, it has recently started to dehumidify also on that setting. What to do? The unit is 5 years old.


I'm sorry is the unit set on COOL (snowflake) or DRY (raindrop) All air conditioner will dehumidify when in cooling mode. That is just the dynamics of air conditioning. The air should still be cool depending on your settings. if the air is not cool and you have confirmed that it is in cooling mode, check that the filters are clean and if they are have the system serviced.

I take the time to answer your question, so please rate me.
Thankyou Mat

Aug 24, 2009 | Mitsubishi Mr. Slim MXZ30TN Air...

1 Answer

Rinnai 556 ftr keeps flashing code 12


Hi

Thanks for using FixYa. Error code 12 on a rinnai 556ftr means Flame failure. Check gas is turned ON.
Also see this error manual.

Please refer to this user manual for more details --

Rinnai 556ftr User manual

Please do rate the solution & revert for further assistance.

Thanks
Rylee

Jul 29, 2009 | Rinnai EnergySaver 556 Air Conditioner

2 Answers

Rinnai 556 Heater


Call Rinnai. I have replaced about 15 control boards that have an issue rating with the capacitor microfahred rating. There is no recall, but if you at least let them run your EXACT MODEL AND SERIAL number you may be pleasantly suprised that they send someone out to replace the board.

If you have a dual port digital manometer and are handy, you may be able to install a new board. You MUST reset the high and low fire rate with the new board. Hope this helps

Al

Feb 10, 2009 | Rinnai EnergySaver 556 Air Conditioner

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

136 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3238 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...