Then, slide the bottom metal screen to the dual exterior hood. See illustration beside. *Patent pending 3.8.3 LOCATING THE DUAL EXTERIOR HOOD The dual exterior hood must be installed at a minimum distance of 18 inches (457 mm) from the ground. See illustration beside. 3.8.4 CONNECTING TANDEM® TRANSITION TO THE DUAL EXTERIOR HOOD 1. Using a jig saw, cut a 6’’ diameter hole in the exterior wall and insert the Tandem® transition through this hole. 1) Exhaust air to outside duct 3. INSTALLATION (CON

(By waiting 10 minutes after plugging the unit in, you are assured that the unit is not in a defrost cycle.). 2. Place the magnehelic gauge on a level surface and adjust it to zero. 3. Connect tubing from gauge to EXHAUST air flow pressure taps (see diagram beside). Be sure to connect the tubes to their appropriate high/low fittings. If the gauge drops below zero, reverse the tubing connections. NOTE: It is suggested to start with the exhaust air flow reading because the exhaust has typically mo

ELECTRICAL CONNECTION TO THE FURNACE WARNING Never connect a 120-volt AC circuit to the terminals of the furnace interlock (standard wiring). Only use the low voltage class 2 circuit of the furnace blower control. 0 ! For a furnace connected to a cooling system: On some older thermostats, energizing the «R» and «G» terminals at the furnace has the effect of energizing «Y» at the thermostat and thereby turning on the cooling system. If you identify this type of thermostat, you must use the ALTERN

Some details of your unit may be slightly different than the ones shown. Please take note that this manual uses the following symbols to emphasize particular information: WARNING ! Identifies an instruction which, if not followed, might cause serious personal injuries including possibility of death. CAUTION Denotes an instruction which, if not followed, may severely damage the unit and/or its components. NOTE: Indicates supplementary information needed to fully complete an instruction. We welcom

0 ! 3.6.1 FULLY DUCTED SYSTEM (AS ILLUSTRATED IN SECTION 2.1) Stale air exhaust ductwork • Install the stale air exhaust registers where the contaminants are produced: kitchen, living room, etc. Position the registers as far from the stairway as possible and in such a way that the air circulates in all the lived-in spaces in the house. • If a register is installed in the kitchen, it must be located at least 4 feet (1.2 m) from the range. • Install the registers 6 to 12 inches (152 to 305 mm) fro

. . . . . . . . . . . . . . . . . . . . . . . . . .6 1.6 CONTROLSAND LINKAGE POSSIBILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.0 TYPICALINSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8 2.1 FULLY DUCTEDSYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..7 2.2 CENTRAL D

Motor Speeds High and low speed Electrical supply 120 V, 60 Hz 120 V, 60 Hz Power Consumption 150 watts 160 watts Model HRV ERV 1. TECHNICAL DATA (CONT’D) 1.4 PERFORMANCE CHARTS 1.4.1 HRV U NITS Ventilation Performance Energy Performance EXT STATIC PRESSURE Pa in.w.g. NET SUPPLY AIR FLOW l/s cfm m3/h GROSS AIR FLOW SUPPLY EXHAUST l/s cfm m3/h l/s cfm m3/h 25 .1 52 110 187 52 110 187 58 122 205 50 .2 50 106 180 50 106 180 55 116 198 75 .3 48 101 173 48 102 173 53 113 191 100 .4 45 96 162 46 97 16

w.g.' o4 to 14o cfm '0.4 in. w.g.' Whole-house balanced ventilation, minimize infiltration and exfiltration Offers solid ventilation performance Best airflow range in its category Superior heat recovery Durable, reliable, high performance Ideal For Houses from 3,001 to 4,500 sq. ft. Contractors who want added value, quality, and best performance Features Best airflow and heat recovery in its class Smart Defrost y,stoin Easy to vM-vke Benefits Continuous background ventilation with

NOTE: Home with multiple forced air systems should have one unit on each system. Stale air coming from the registers located at the highest level of the house is exhausted to the outside. Fresh air from outside is filtered and supplied by the register located in the lowest liveable level. Homes with more than one level require at least one exhaust register at the highest level. See figure at right. Stale air coming from the registers located at the highest level of the house is exhausted to the