York VAV Air Handlers | HVAC Zoning - This York air handling unit serves several VAV boxes and runs on a static pressure control set point determined by a DDC program. This program has a static pressure control setpoint and sends a signal to the variable frequency drive to speed up or slow down the blower to maintain the proper static pressure control setpoint. When the VAV boxes need more air the drive speeds the air handler blower up.
When the VAV boxes need little the drive slows the blower down. The VAV boxes are controlled by a thermostat in their respective zones.
This photo shows the air handler blower compartment. This is how the air handler is opened when the blower needs service or repair. The evaporator coil is on top of the blower which makes this an upflow air handling unit. The supply air ductwork will be above the AHU. Since this air handler is installed in a closet then the ductwork is installed in the ceiling and makes this an ideal installation for AC since cool air falls. (more…)
Wireless WiFi Smart Thermostats - The future of wireless thermostats have already arrived as there are a handful of wireless thermostats available on the market now. These are the forefathers of wireless thermostats and offer basic functions that the average wired programmable thermostat has to offer that are currently available on the market.
As we progress and the thermostat manufacturers tweak and improve on their thermostats, the thermostats will grow far more complex than the wireless thermostats offered today. This new breed of the wireless thermostat is a far cry from the once state-of-the-art thermostats that offered touch screens and adaptive recovery features that the current breed of thermostat offers.
As we move into the future, we see new features and options that will offer us more control, monitoring, and energy savings. All the manufacturers have something in the pipeline for wireless thermostats including Venstar, Emerson (White-Rodgers), and Honeywell to name a few thermostat manufacturers. (more…)
Heat Pump Components - Heat Pumps are similar to air conditioners with a few extra components. Components added to allow the heat pump to offer both heating and cooling. The two major differences between a heat pump and an air conditioner are the controls and the refrigeration circuit.
While there are many different types of heat pumps and air conditioners the methods and means these two types of heating and cooling systems use are basically the same. (more…)
How to Hook Up a Home Thermostat - If you need to install a new thermostat then you have found the right place to learn. Below we will describe to you how to hook up a new digital thermostat. Whether the old thermostat is bad or not if you simply want to replace your old one and hook up a new one. First of all, the first thing you need to take into consideration is to select the right replacement thermostat.
To select the correct replacement you need to know what kind of HVAC equipment you have in your home. Or where you want to hook up the new thermostat. There are numerous types of air conditioner and heating combinations. Therefore, to simplify things, we will cover a basic gas furnace and air conditioner split system HVAC system. For hooking up a new thermostat similar systems to the air conditioner/gas furnace combination would be: (more…)
Honeywell Oil Burner Ignition Control | HVAC Heating - This Honeywell oil burner ignition control controls the oil burner sequence of operation. On a call for heat from the thermostat, the oil burner ignition control starts the burner blower. this mechanically interlinked with the oil pump.
The blower blows air into the combustion chamber and the oil pump pumps oil to the burner’s nozzle. The step-up transformer is energized and applies a very high voltage spark to the burner’s ignitor. When the flame is detected it is immediately detected by a cad cell eye which recognizes the light produced by the flame inside the combustion chamber. (more…)
Heat Pump Types - There are different types of heat pumps available on the market today. A heat pump is an air conditioning unit that cools when the temperature is hot and heats when it is cold. There are many different types of these heat pump systems available. There is the geothermal heat pump. It can either utilize a series of closed-loop water pipes buried in the ground or other methods of heat exchange. This process removes or absorbs heat for heating and cooling.
Air source heat pumps can be configured differently. One type of air source heating will utilize electric heating for backup heating while another may use a gas furnace for backup heating. These types of systems can also be split systems or package units and nearly all share a similar heat pump sequence of operation. A description of the various types of systems and how they work is below in this article on heat pump types. These systems utilize similar heat pump components but differ in how the heat pump works.
HVAC Tip - Ceiling Fans Save Energy: Ceiling fans installed strategically in your home or business can save you in air conditioning energy costs in the summer. The draft effect from the fan will allow you to raise the thermostat setting by up to 4 degrees and still remain comfortable. Make sure you purchase ceiling fans with energy efficient motors and blade designs. Some ceiling fans have inefficient motors and bad blade designs that will reduce the energy savings you can realize. A qualified electrician can install ceiling fans in your home or business and you can enjoy the savings and compliment your HVAC system.
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York VAV Air Handlers | HVAC Zoning - This York air handling unit serves several VAV boxes and runs on a static pressure control set point determined by a DDC program. This program has a static pressure control setpoint and sends a signal to the variable frequency drive to speed up or slow down the blower to maintain the proper static pressure control setpoint. When the VAV boxes need more air the drive speeds the air handler blower up.
This photo shows the air handler blower compartment. This is how the air handler is opened when the blower needs service or repair. The evaporator coil is on top of the blower which makes this an upflow air handling unit. The supply air ductwork will be above the AHU. Since this air handler is installed in a closet then the ductwork is installed in the ceiling and makes this an ideal installation for AC since cool air falls. 
Wireless WiFi Smart Thermostats - The future of wireless thermostats have already arrived as there are a handful of wireless thermostats available on the market now. These are the forefathers of wireless thermostats and offer basic functions that the average wired programmable thermostat has to offer that are currently available on the market.
Honeywell Oil Burner Ignition Control | HVAC Heating - This Honeywell 
