I have an obsolete 34 ton Carrier, rooftop, multi-zone, direct expansion unit that I virtually can't get replacement parts for. I need a comparable change out, preferably not a Carrier. Can someone recommend a good substitute, brand, and model number? Also, I have the same scenario with a 20 ton Carrier. We recently bought another home and moved. This home has two dual fuel heat pumps that are zoned. Can you explain exactly how dual fuel heat pumps work.

The airflow requirement depends on the acceptable temperature rise as air traverses through the computer unit. For air inlet temperature of 55 deg. F and a temperature rise of 20 deg. F, the required cooling airflow rate (CFM) can be calculated as:

Formulas can contain numbers or text, and also other information such as formatting details. Formulas also contain arithmetic and logic operators, or function starts. You can use basic arithmetic signs ( (, +, *, /) ) in formulas. Besides doing calculations with formulas you create, you can quickly define a sum function using Spreadsheet's Sum button. Click in a cell, click the Sum button, and enter the cell range. Press Enter to apply the sum function to that cell.

Please provide the capacity of the GE make heat pump model BWC0900400A2. Also include nominal airflow. we have a 2160 sq ft house "split type" master on one side rest of bedrooms on other side. Unit in garage in rafters, what size unit should we actually have. Currently we have 3 ton and it isn't getting job done. Runs incessantly. Same with heating. Thanks.

When number of clients is defined by CLIENTS_NUM_MAX tag, number of CAPS (call attempts per seconds) is resulting from the clients number and load duration for each cycle, comprising from url time for each url with possible redirections, intervals betwee urls and after url interval. The actions and time intervals are configurable in batch file, whereas url retrival time is server and network dependent and not always easy to predict.

Well, probably. The MA 6S will not be damaged but you will obtain much less power output, and an extremely hot amplifier. To protect itself the MA 6S will current limit to the best of its ability. The MA 3 will current limit also and its fan must be set to high speed. Be forewarned that running below rated impedance voids the warranty and may damage the amplifier channels as well as power supply.

This is a short name for "heat loss and gain calculation". This is something that every HVAC contractor should do at the very beginning of every job, but in reality there are very few that will even mention it to you, and if you even ask them about it, they will try to convince you that it is either very expensive or completely unnecessary because there's a "rule of thumb", or press you with their alleged experience and tell you how many thousands of people they have made happy.

Just add the power requirements for all the equipment being powered, these details will be in the datasheet for the product under power supply. Then follow the steps described in the APS Configurator on the website. It couldn't be easier.

To edit a formula unit for Biological Modeler, like Kf or Kr on a Reaction node, double-click the node to open the Properties Pane. There will be two text fields next to Kf and Kr. The first contains a formula/value and the second contains the units. You can change units by editing the second field, but Kf and Kr need to be dimensionally consistent with the default units, or the change will be rejected.

Yes! Each computer consumes about 300 Watts per hour and does add to the heat of the room. The heat generated from 10 computers needs 1 tonne of air conditioning to keep the room comfortable.

Debris build up like bugs and insects can clog the fan.  Please see  "Owner's Manual & Maintenance" page for cleaning instructions.

We do not recommend using a microwave oven to heat the formula, because microwaves do not heat liquids or solid foods evenly. To check the temperature of liquid in the bottle, test the teat by pulling on the bulb portion, and replace if teat shows any signs of wear. All the Dr. Brown's Natural Flow® baby bottles share the benefits of the patented internal vent. Many breast-feeding mothers prefer the Dr.

Enfamil formulas may be fed cold, at room temperature, or warmed. Your baby may have a preference. If you are warming Enfamil formulas, we recommend placing the bottle in a container of warm water or by holding the bottle under warm running tap water.

The aim is to give the simplest explanation of the calculation of the winnings in case of a dead heat. The example will be taken from a real and recent race: Prix du Bourbonnais of December 10th, 2005. First, we have to remember that we are talking about parimutuel bets: there is no creation of money, the money of the stakes is distributed after deducting the charges, the taxes..

This is tough to display here... It is the result of the gross model weight divided by the rotor disk area. Radius squared, times 3.14, divided by 144, will give you the square feet. Then take the weight of the model in ounces, and divide this by the square feet, and the result is the disk loading in "ounces per square feet"...........

Yes - WISP contains glycaemic index values for a large number of foods and automatically calculates glycaemic load from food intake records and dietary glycaemic index.

quot; wide Clayborn Precision Heat Tape will cover 6 square inches per lineal foot. If you calculate the amount of surface area in square inches, divide 6 into the result and you will have the amount of heat tape for 100% coverage.

If your Serial number starts with an S or an E, that would determine that you have either 321 SS Ht. Exchanger or 409 SS Ht. Exchanger. Heat Exchangers fabricated from 409 SS are magnetic.

The general rule on these water heaters is 1 minute per litre so the 25 litre unit would take approximately 25 minutes.