INSTALLATION GUIDE FOR VENMAR AVS UNITS CONSTRUCTO 1.0 HRV AND CONSTRUCTO 1.0 ERV Model no.: 41502 (HRV with ports on top) Model no.: 41500 (HRV with ports on sides) VB0070 VB0069 Model no.: 41506 (ERV with ports on top) VB0071 Model no.: 41504 (ERV with ports on sides) VB0074 RESIDENTIAL USE ONLY READ AND SAVE THESE INSTRUCTIONS These products earned the ENERGY STAR® by meeting strict energy efficiency guidelines set by Natural Resources Canada and the US EPA.
ABOUT THIS MANUAL Because of the large amount of models covered by this publication, the illustrations are typical ones. 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.
TABLE OF CONTENTS 1. TYPICAL INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5 1.1 1.2 1.3 1.4 2. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3. FULLY DUCTED SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. TYPICAL INSTALLATIONS Installations may vary according to the type of unit and the ports configuration (top or sides). Use the following illustrations as guidelines to help you decide on how the unit will be installed. All the units should be hung from the joists. In every case, bathroom fans and a range hood should be used to exhaust stale air. Also, for homes with more than one level, we recommend one exhaust register at the highest level.
1. TYPICAL INSTALLATIONS (CONT’D) 1.4 ATTIC INSTALLATION FOR ERV UNITS ONLY All 3 types of installations can be used in the attic (Fully ducted system, Central Draw Point or Simplified). The example shown below is a Simplified installation (connection to a forced air system). CAUTION Due to the potential temperature difference between the attic and the rest of the house, all unit ducts must be insulated. CAUTION The attic temperature must always be above 0°C (32°F).
2. INSTALLATION (CONT’D) 2.3 UNIT PREPARATION (CONT’D) The door latches location can be changed from sides to front of the unit, according to the installation needs. VD0176 Latches on sides of the unit Latches in front of the unit To do so, turn the unit upside down. Open the latches an unscrew them from the unit. Install the latches on their new locations. VO0094 VO0090 VO0089 2.4 HOW TO HANG THE UNIT Hang the unit with the 4 chains, hooks and springs provided.
2. INSTALLATION (CONT’D) 2.5 PLANNING OF THE DUCTWORK • Keep it simple. Plan for a minimum of bends and joints. • Keep the length of insulated ducts to a minimum. • Do not ventilate crawl spaces or cold rooms. Do not attempt to recover the exhaust air from a dryer or a range hood. This would cause clogging of the filters and recovery module. • If the house has two floors or more, be sure to plan for at least one exhaust register on the highest lived-in level. 2.
2. INSTALLATION (CONT’D) 2.6 INSTALLING THE DUCTWORK AND 2.6.3 SIMPLIFIED INSTALLATION (AS REGISTERS (CONT’D) ILLUSTRATED IN SECTION 1.3) 0 ! WARNING When performing duct connections, always use approved tools and materials. Respect all corresponding laws and/or safety regulations. Please refer to your local building code. CAUTION When performing duct connections to the furnace supply duct, this duct must be sized to support the additional airflow produced by the HRV/ERV. Also, use a steel duct.
2. INSTALLATION (CONT’D) 2.7 CONNECTING THE DUCTS TO THE UNIT Insulated flexible ducts: Use the following procedure for connecting the insulated flexible ducts to the port of the unit (Exhaust air to outside and Fresh air from outside ports). CAUTION Make sure the balancing dampers are set to their appropriate position before connecting the ducts to the ports. See Section 2.3.
2. INSTALLATION (CONT’D) 2.9 INSTALLING 2 EXTERIOR HOODS EXHAUST 6” Ø (152 MM) HOOD INTAKE HOOD 18’ (457 MM) Choose an appropriate location to install the exterior hoods: • There must be a minimum distance of 6’ (1.8 m) between the hoods to avoid cross-contamination • There must be a minimum distance of 18” (457 mm) from the ground 6’ (1.8 M) 18” (457 MM) 6’ (1.8 M) Make sure the intake hood is at least 6’ (1.
3. CONTROLS (CONT’D) 3.2 ELECTRICAL CONNECTION TO OPTIONAL WALL CONTROLS For more convenience, this unit can also be controlled using an optional main wall control. NOTES: 1. The integrated control must be turned OFF to use an optional main control. 2. If an optional auxiliary control is used, if activated, this auxiliary control will override the optional main control. 0 ! WARNING Always disconnect the unit before making any connections.
3. CONTROLS (CONT’D) 3.2 ELECTRICAL CONNECTION TO OPTIONAL WALL CONTROLS (CONT’D) 3.2.4 ELECTRICAL CONNECTION TO OPTIONAL AUXILIARY WALL CONTROLS 60-MINUTE CRANK TIMER DEHUMIDISTAT NOTE: If an optional auxiliary wall control is activated and then, the Dehumidistat is being activated, this one will override the auxiliary wall control commands.
- 13 - VE0210A G BK BK BK BK BK BK BN BN BL BL Ref 1 2 1 1 2 3 1 2 3 2 1 J8 J9 MED HI 3 2 1 F1 W1 Low-Med select Med-High select Factory shipped W BL R P R GR R R BL BL BL R BL Low (57) - Med (81) Med (64) - High (106) Low (57) - High (106) Ref 1 FAN SPEEDS (Voltage) G BK J10 4 321 See note 1 2 1 120 V, 60 Hz J4 J6 J7 J5 5 4 3 2 1 FAN MOTORS SPEED SELECTION SETTING BK Damper motor M3 BK J2 12 54321 12 J11 J12 J3 R1 Furnace blower interlock J14-1 :
6. BALANCING THE UNIT To avoid balancing, the difference between stale air ducts total length and fresh air ducts total length must not exceed 50 ft. However, even if the stale air ducts and fresh air ducts lengths are almost equal, your local building codes may require balancing the unit. If the unit does not need to be balanced, shut all the pressure taps (located on the unit door) with the small plastic plugs included in the hardware kit. 6.
7. CONNECTING THE DRAIN (HRV UNITS ONLY) A VD0181 From the inner side of the unit door, using the provided drain tube, punch out both drain holes (A). VO0091 In order to keep the drain pan intact, hand tighten the 2 plastic drain fittings to the unit door using the gaskets and nuts as shown. Tie-wrap VO0092 VO0093 Cut 2 sections of plastic tubing, about 12” long and attach them to each drain fitting. Join the 2 short sections to the “T” junction and main tube as shown.
8. SERVICE PARTS 13 12 1 3 2 11 4 5 10 6 7 4 3 9 8 VL0019 REF. DESCRIPTION NO.
9. TROUBLESHOOTING If the integrated control LED of the unit is flashing, this means the unit sensors detected a problem. See the table below to know where on the unit the problem occurs. LED flashes GREEN. • Thermistor error. • Replace the entire port assembly (fresh air from outside port). (The unit is still running) LED flashes AMBER. (The unit stops.) • Damper error. • Go to Point 6. LED flashes RED. (The unit stops.) • The door is open and the unit is not unplugged.
9. TROUBLESHOOTING (CONT’D) Problems Possible causes You should try this 9. The supply and/or exhaust motor do not work. • The circuit board may be defective. • Press on the integrated control push button until the unit turn on low speed (the LED will light AMBER). Using a multimeter, check the voltage on J4-1 and J4-2 (for supply motor), and on J5-1 and J5-2 (for exhaust motor). Refer to the FAN MOTORS SPEED SELECTION table in Section 5 WIRING DIAGRAM to know what the reading must be.
