Lifebreath AH40DHW, AH60DHW, AH40BHW Water Heater Thermostat, Energy Saving Room Thermostat

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Water Heater Thermostat

The water heater thermostat is set by the installing contractor to provide the required temperature at the hot water outlet of the water heater. It is important that a warning label be place near the water heater thermostat telling the homeowner not to change the thermostat setting. The label is included with the furnace.

Room Thermostat

The room thermostat controls both the water circulation pump and the air circulation fan. It should be on a centrally located, inside wall away from any source of heat such as diffusers, appliances and direct sunlight.

Energy Saving Room Thermostat

A set back thermostat or “smart stat” can be used with a combo system, but care must be taken in the timing of the temperature changes. The timing of morning warm up should be early enough that the desired air temperature has been reached before the people begin to use domestic hot water. The highest demand for space heating is during the morning warm up and the highest demand for domestic hot water is during morning showers. Even if the water heater is properly sized, it may not be able to meet this combined load. Therefore, large set backs should be avoided.

to achieve higher outputs from the furnace an anti-scald valve must be used to prevent domestic hot water temperatures above 140˚F (60˚C). The manufacturer of the Hot Water Tank should be consulted for temperatures higher than 140˚F.

Hot Water Flow Rate

The hot water entering the water coil is the source of heat to the air handler. The effect of changing the amount of water entering the coil is the same as changing the water temperature. As water flow is reduced, the output of the air handler and the air temperature rise will both be lowered.

Air Handler Return Air Temperature

The return air temperature entering the air handler is approx. 60˚F (33˚C) below the hot water inlet temperature. If the return air temperature entering the air handler is reduced, more heat transfer will occur and the output of the air handler will increase.

Air Handler Air Flow Rate

The air entering the air handler can only be warmed by the temperature difference between the hot water and the cool air. As the volume (CFM (L/s)) of air is reduced, the amount of heat which can be transferred is also reduced.

Air Handler Output Capacity

There are four factors that will significantly affect the heating output of the air handler.

They are:

•Hot water supply temperature (EWT)

•Hot water flow rate (GPM)

•Air Handler return air temperature

•Air Handler air flow rate (CFM)

The hot water inlet temperature is typically 140˚F (60˚C). If this temperature must be increased

Air Handler Temperature Rise

In a fuel fired furnace, the combustion gases can be 1000˚F (538˚C) above the return air temperature. These units typically have a temperature rise from 50˚F (10˚C) to 90˚F (32˚C) and therefore delivers air at the diffuser at 120˚F (49˚C) to 160˚F (71˚C).

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Contents OPERATION, Sizing and Installation Manual Table of Contents Introduction Description and Purpose Important NoteCombo System Basic Principles Closed/Open Combo SystemAir System Call for Space Heating Only OperationCall for Domestic Hot Water and Space Heating Operation Water PipingManual Valves Throttling Valve Shut Off ValvesDrain Valve Check ValvesWater Expansion TanksCold Anti-Scald ValveWater Heater Thermostat Air Handler Return Air TemperatureAir Handler Temperature Rise Room ThermostatHead Pressure Design vs. Field ConditionsWater System Pressures Flow RateWarranty SpecificationsDimensions & Clearances Model AH40DHWModel AH60DHW AH60DHWModel AH40BHW AH40BHWModel AH60BHW AH60BHWModel AH80BHW AH80BHWDuct Connections InstallationLocating The Unit DuctingPlumbing Water HeaterAir Handler Wiring Diagram ElectricalOptional Dehumidistat OutsideStart-Up Procedure Following conditions must be met prior to start-upHeating/Cooling Optional Circulation Timer ModelsOperation Continuous Low Speed Hook UpLack of heat TroubleshootingPump is noisy Water Pump Performance Specifications System CommissioningPage Page Page Page Page Page

AH60BHW, AH80BHW, AH40BHW, AH40DHW, AH60DHW specifications

Lifebreath is a recognized leader in energy recovery ventilation systems, and its line of products, including the AH60BHW, AH40BHW, AH40DHW, and AH80BHW models, reflects the company's commitment to delivering high-quality indoor air solutions. These models provide an innovative approach to enhancing indoor air quality while ensuring energy efficiency.

The Lifebreath AH60BHW model is designed to meet the demands of larger spaces, offering a remarkable airflow capacity. This system incorporates advanced energy recovery technology, enabling it to efficiently transfer heat and moisture between incoming and outgoing air streams. As a result, it maintains comfortable indoor conditions regardless of the external climate, ensuring optimal performance year-round.

For medium-sized areas, the AH40BHW and AH40DHW models are excellent choices. Both systems feature similar designs with slight variations in their configurations. The AH40BHW operates using hot water, making it particularly effective in radiant heating applications. In contrast, the AH40DHW relies on direct water heating, providing reliable and consistent heat distribution. These models also boast high-efficiency filtration systems that capture airborne pollutants, contributing to healthier indoor environments.

The Lifebreath AH80BHW is tailored for extensive applications, delivering superior ventilation and energy management. It utilizes a robust heat recovery core that maximizes energy savings and ensures minimal heat loss during the exchange process. Additionally, the AH80BHW's compact design makes it versatile for various installation scenarios, whether in residential settings or commercial spaces.

All models are equipped with user-friendly controls that allow easy adjustments of airflow settings to suit specific requirements. Furthermore, the addition of advanced monitoring technology ensures that users can track system performance and energy usage, optimizing efficiency. With quiet operation characteristics, these systems enhance comfort without disruptive noise.

Overall, Lifebreath's AH series ventilation systems represent a combination of cutting-edge technology and practical design. Their focus on energy recovery, high filtration efficiency, and user-friendly operation makes them an ideal choice for anyone seeking better air quality and comfort in their indoor spaces. Whether for residential or commercial needs, Lifebreath provides reliable solutions that prioritize both health and efficiency.
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