Lifebreath 40DHWDF(T), 60DHW(T) Shut Off Valves, Drain Valve, Throttling Valve, Check Valves

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Shut Off Valves

There are 3 shut off valves required for an integrated combo system as follows:

•One valve (a) on the cold water side of the water heater upstream of the heating loop connection. This valve has the ability to isolate the hot water (domestic and space heating) from the household cold water supply. This valve is required on every water heater whether or not the water heater is used for space heating.

•One valve (b) on the hot water supply side of the heating loop, downstream of its connection to the domestic water.

•One valve (c) on the return side of the heating loop upstream of its connection to the domestic cold water.

The two valves in the heating loop allow the heating loop to be isolated for service or repair.

(a) Supply

(b)

(c) Return

H C

SHUT OFF VALVES

Drain Valve

system. The drain valve should be near the low point of the return piping system upstream of the shut off valve and is preferred to be near the water heater.

Throttling Valve

The throttling (balancing) valve is used to reduce the water flow rate and thereby increase the water temperature drop. This is done to ensure proper activation of the water heater thermostat. This valve should be a globe or balancing valve.

Check Valves

A spring loaded check valve is required in the heating loop to help minimize thermo-siphoning of hot water throughout the heating loop when heating is not called for and cold water back flowing through the heating loop when domestic hot water is used. The valve will have a water flow direction arrow marked on it’s exterior surface and must be installed with that arrow pointing downstream.

CHECK VALVE

A drain valve is required to allow the heating loop to be drained for service or repair and to remove air from the heating loop when commissioning a

*Check valves should always be installed in a vertical rise with the flow of water shown.

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Contents OPERATION, Sizing and Installation Manual Table of Contents Introduction Description and Purpose Combo System Basic Principles Closed/Open Combo SystemCall for Space Heating Only Operation Call for Domestic Hot Water and Space Heating OperationAir System Water PipingManual Valves Shut Off Valves Drain ValveThrottling Valve Check ValvesExpansion Tanks ColdAnti-Scald Valve Off Season Circulation ControlsAir Handler Return Air Temperature Air Handler Temperature RiseWater Heater Thermostat Room ThermostatDesign vs. Field Conditions Water System PressuresHead Pressure Flow RateDimensions & Clearances WarrantyModel 40DHW Up Flow Filters CaseModel 60DHW Up Flow 60DHWModel 40DHWDF Down Flow 40DHWDFModel 60DHWDF Down Flow 60DHWDFModel 40DHWH Horizontal 40DHWHModel 60DHWH Horizontal 60DHWHHigh CFM Lower Btuh Output 4TONDHW40VENTAC Model 40VENTACCore Filters Case Model 60VENTAC 60VENTACModel 4TONVENTAC 4TONVENTACOption 1 Ventilation Ports Off Left Side Locating The UnitDuct Connections Ducting Option 2 Ventilation Ports Off Right SideHorizontal Version Locating Intake Weatherhood Locating the Exhaust WeatherhoodsOutside Ducting the Weatherhoods Locating WeatherhoodPrior to balancing, ensure that Balancing ProcedurePitot Tube Air Flow Balancing Balancing Collar Instructions Placement of the Pitot TubePitot Tube and Gauge Piping HRV Drain Line DiagramDrain Line Plumbing Water HeaterClean Air Furnace Wiring Diagram ElectricalOptional Dehumidistat Start-Up Procedure Following conditions must be met prior to start-upOptional Circulation Timer Models OperationHeating/Cooling VentilationTroubleshooting Lack of heatPump is noisy HRV core freezes upDuring cooling cycle, hot water circulates through the coil Water sits in drain pipesCondensation/ice forming inside ventilation ducts Humidity levels are too lowWater Pump Performance Specifications System CommissioningWorksheet for Integrated Combo System Design Part a Design Load Specifications Method a domestic hot water usage for C.1 Part D Proving Required Water Flow Commissioning of Integrated Combo System HRV Balancing McCormick Blvd. London, Ontario N5W 4C8

40DHWDF(T), 4TONVENTAC, 60VENTAC, 40VENTAC, 60DHWH(T) specifications

Lifebreath is a leading manufacturer specializing in indoor air quality solutions, with their series of heat recovery ventilators tailored for both residential and commercial applications. Among their advanced systems, the Lifebreath 60DHW(T), 60DHWDF(T), 4TONVENTAC, 40DHW(T), and 40DHWDF(T) provide exceptional ventilation performance alongside energy efficiency.

The Lifebreath 60DHW(T) and 60DHWDF(T) models are designed for larger spaces, featuring an impressive air flow rate of 60 CFM, making them ideal for homes and businesses that require a robust ventilation solution. These units incorporate a state-of-the-art heat exchange core, allowing for the transfer of heat from outgoing stale air to incoming fresh air, thereby minimizing energy loss.

The significant advantage of Lifebreath's 60DHW series lies in its dual-fan operation, which delivers balanced air flow while maintaining a comfortable indoor climate. Both models are equipped with advanced filtration systems, providing effective capture of airborne pollutants and allergens, promoting optimal air quality.

Moving to the Lifebreath 4TONVENTAC, this unit offers a unique combination of ventilation and cooling functionalities, making it suitable for environments with varying weather conditions. With a 4-ton capacity, it is perfect for larger commercial establishments. The 4TONVENTAC employs innovative technology for efficient energy use, incorporating variable speed drives to adapt to changing ventilation demands, ensuring maximum energy conservation and performance.

The Lifebreath 40DHW(T) and 40DHWDF(T) are perfect for smaller residential applications. With an airflow capacity of 40 CFM, these units maintain comfort without over-ventilating. Similar to the 60DHW models, they feature the same exceptional heat exchange technology to promote energy savings. The 40DHW series also includes user-friendly controls and monitoring features, enabling homeowners to adjust settings for optimal performance based on their specific needs.

A common characteristic across all these models is Lifebreath’s commitment to durability and reliability. Made from high-quality materials, they are built to withstand varying environmental conditions while providing long-lasting service. With easy installation and low maintenance requirements, these heat recovery ventilators prove to be a smart investment for users looking to improve their indoor air quality while reducing energy costs.
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