Lifebreath CAF-02-MB Locating Intake Weatherhood, Locating the Exhaust Weatherhoods

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Locating Intake Weatherhood

The intake weatherhood should be located as follows:

4 - 6' from ventilation exhaust hood, and upstream of prevailing winds, if possible.

At least 6' from a dryer vent, oil fill pipes, combustion outlets, gas meters, garbage containers or anything else, which may contaminate the air.

Do not locate fresh air intake in garages, crawl spaces or attics.

Install 18" above grade, or above expected snow accumulation.

Locating the Exhaust

Weatherhoods

The Exhaust Weatherhood should be located as follows:

At least 4-6' from the supply inlet

At least 18" above grade or expected

 

snow accumulation

 

Outside Ducting the Weatherhoods

The ventilation portion of the Clean Air Furnace can be vented off either side of the unit by remov- ing knockouts provided. Once the knock outs in are removed, a bead of silicone can be placed on the plastic thermo-collars (provided), to form a seal between the collars and the cabinet. The collars can then be fastened into place with screws. Note the exhaust outlet is always the port on the bottom, and the supply inlet is always the port on the top, both ports should be labeled from the factory as such.

The ductwork from the outside weatherhoods to the unit, is usually flexible ducting, although rigid pipe may be needed if the runs are greater than 20 feet. In either case the pipes (both exhaust and supply and the added fittings) must be insulated, with a complete vapor barrier. To minimize restriction in airflows the ducting should be short, with as few bends as possible. See diagram below for recommended connection of insulated ducting to outside weatherhoods.

Locating Weatherhood

WEATHERHOOD INSTALLATION

At least 3' from gas meters, combustion

vents, or dryer vents

Do not install in garages, crawl spaces

or attics

1/4" (6 mm) SCREEN

(front view)

 

COLLAR IS SUPPLIED TO

SCREEN

ENSURE VAPOUR BARRIER

(side view)

IS 100% SEALED TO

 

WALL PLATE

 

12" galvanized

 

pipe supplied

EXTERIOR

WALL

1.Thermal Collar slides over galvanized sleeve of Weatherhood.

2.Fasten Thermal Collar to Belt.

3.Slide the Insulated Flexible Ducting over the Weatherhood's galvanized sleeve and fasten it to the Thermal Collar.

4.Hood is hinged to allow for easy access for cleaning of bird screen.

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Contents OPERATION, Sizing and Installation Manual Table of Contents Introduction HRV Aluminum CoreDescription and Purpose Important NoteCombo 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 ValvesOff Season Circulation Timer Expansion TanksCold WaterAir Handler Return Air Temperature Air Handler Temperature RiseWater Heater Thermostat Room ThermostatDesign vs. Field Conditions Water System PressuresHead Pressure Flow RateModel Number Nomenclature Breakdown Specifications Model CAF-U-S4A-24-P16 Dimensions & ClearancesWarranty Core Filters CaseSpecifications Model CAF-U-L4A-36-P16 CAF-U-L4A-36-P16Specifications Model CAF-D-S4A-24-P16 Filters CaseCAF-D-S4A-24-P16 Specifications Model CAF-D-L4A-36-P16 CAF-D-L4A-36-P16Specifications Model CAF-H-S4A-24-P16 CAF-H-S4A-24-P160302 Specifications Model CAF-H-L4A-36-P16 CAF-H-L4A-36-P16Specifications Model CAF-U-L2A-48-P16 CAF-U-L2A-48-P16Specifications Model CAF-U-00-36-P16 CAF-U-00-36-P160211 Specifications Model CAF-U-00-48-P16 CAF-U-00-48-P160209 Installation Locating The UnitDuct Connections Option 1 Ventilation Ports Off Left SideOption 2 Ventilation Ports Off Right Side DuctingLocating Intake Weatherhood Locating the Exhaust WeatherhoodsOutside Ducting the Weatherhoods Locating WeatherhoodBalancing Procedure Pitot Tube Air Flow BalancingPrior to balancing, ensure that Placement of the Pitot Tube Pitot Tube and GaugeBalancing Collar Instructions HRV Drain Line Diagram Drain LinePiping Plumbing Water HeaterAutomatic Self Test Basic FunctionsSelecting Different Heat & Cool Speeds ECM Motor Settings Off Season Circulation Timer OperationHeating/Cooling VentilationStart-Up Procedure Following conditions must be met prior to start-upTroubleshooting Humidity levels are too low Humidity levels are too highWater Pump Performance Specifications System CommissioningPage Page Page Page Page Page Diagram ECM CAF/Air Handler Wiring Diagram Fan Motor