Page 3 - ERV Questions & Answers; Is an ERV better than an HRV?; Here's a list of characteristics of the fixed plate core.; Can the core become clogged with dust?
3 ERV Questions & Answers What is the difference between an HRV and an ERV? T h e c o r e i n a n H R V ( H e a t R e c o v e r y V e n t i l a t o r ) transfers heat from one air stream to the other. This iscalled sensible heat. The term ERV (Energy RecoveryVentilator) is usually used to descri...
Page 5 - Selecting the Correct Size HRV/ERV; Commercial and Institutional Requirements
5 MAKE UP HEAT REQUIREMENT at 1200 CFM (566L/s) Nominal Nominal Nominal Outdoor Temp. kW Req. for kW Req. for kW Req. for C° F° 20°C (68°F) 25°C (77°F) 30°C (86°F) Air Delivery Air Delivery Air Delivery 0 32 7 10 14 -10 14 10 14 17 -20 -4 12 15 19 -30 -22 15 19 22 -40 -40 17 21 24 Selecting the Corr...
Page 6 - OPTIONS; SPECIFICATIONS; TEMPERATURE EFFECTIVENESS; PERFORMANCE
6 OPTIONS 99-104 Digital Electronic Timer - 20/40/60 min. (3 wire) 99-105 Programmable Ventilation Control includes Programmable Time Clock, Dehumidistat and Air Sentry™ 99-109 Air Sentry ™ Air Quality Monitor designed to accept remotely mounted Control Pad 99-250 Ventilation Dehumidistat - Dehumidi...
Page 9 - Sixty Minute Remote Timer
9 SPECIFICATIONS CORES Modular (3 section) patented aluminum heat recovery cores arrangedfor efficient cross-flow ventilation. MOTORS Two PSC, 3 speed double shafted, 120 VAC, 4 Amps each (8.1 total onhigh speed). HP - 1/4, 1625 RPM. Watts - total on high speed - 972. FILTERS Washable air filters in...
Page 13 - NOTE: Fully insulated ducting with an integral; HRV CABINET; Forming the “P” Trap
13 Location for Mounting The HRV/ERV must be located in a conditionedspace where the surrounding air temperaturedoes not fall below 60˚F (16˚C). The unit must bemounted level (horizontal). The warranty will bevoid if these conditions are not met. Typically the HRV/ERV is positioned close to a n o u ...
Page 14 - Outside Weatherhoods; ground level; Ducting from the Weatherhoods
Outside Weatherhoods The weatherhoods must have built-in “bird” screen with1/4 in (63.5 mm) minimum mesh to prevent birds androdents from entering into the ductwork. Do not usesmaller mesh as it will be very susceptible to pluggingup. Gravity dampers at the vents must not be used asthey will restric...
Page 15 - Figure A and B; TECHGRILLE
15 Fresh Air Supply System The fresh air supply ductwork from the HRV/ERV maybe directly connected to the return air duct of theforced air system. Check the air flow balance of theHRV/ERV with the air handler blower both “ON” and“OFF” to determine that it does not imbalance theHRV/ERV more than 10%....
Page 16 - Figure A; The Integrated HVAC System
16 ECONOMIZER HRV/ERV FRESHAIR SUPPLY HRV/ERV UNIT STALE AIREXHAUST TO HRV/ERV SUPPLY DUCT RETURN AIR DUCT or BREATHER T FRESH AIR SUPPLY STALE AIR EXHAUST ROOFTOP UNIT B.D. B.D. Example only - Duct connections not typical ROOFTOP UNIT HRV/ERV FRESHAIR SUPPLY SUPPLY DUCTWORK CEILING RETURN AIR PLENU...
Page 17 - Various Installation Types; Figure 7A; Figure 7B; Figure 7C
17 Various Installation Types Figure 7A Saddle Installation Hang unit with suspended rodsand "U" channel members. Threaded rod and U channel(Supplied by others) Vibration Isolators(Supplied by others) Figure 7B Curb Mounted Mount unit on wooden or metalcurb assembly. Unit must be raisedan ad...
Page 18 - Electrical Connections; FAN DEFROST; Electrical Connection
18 Electrical Connections It is recommended that a licensed electrician make allelectrical connections. It is very important that the unit be properly grounded. It is recommended that aseparate 15 amp/120 volt circuit be used. WARNING: In order to prevent electric shock when cleaning or servicing th...
Page 19 - DEHUMIDISTAT VENTILATION; Speed Selection and Controls; DEHUMIDISTAT; Optional Remote Controls; 0 MINUTE CRANK TIMER
19 T h e s e m o d e l s a r e e q u i p p e d w i t h a 3 s p e e d c o n t r o l , l o w m e d i u m a n d h i g h , a s w e l l a s a lighted on/off switch and a 4 screw terminal strip.The terminal strip can be used to connect anylow voltage device which will then jump the unitto high speed from ...
Page 20 - OPTIONAL REMOTE CONTROLS; AIR SENTRYTM AIR QUALITY SENSOR; If a PVC or Air Sentry is used, connect; PROGRAMMABLE VENTILATION CONTROLLER (PVC); Connects to; RED; and; YELLOW; VENTILATION DEHUMIDISTAT; *See individual control instructions for more details.
20 ControlAir 15 OPTIONAL REMOTE CONTROLS Model 500 Only 0011 NEW! AIR SENTRY™ AIR QUALITY SENSOR LOCATION: Kitchen, basement, work place (connect 1/unit only). • Digital Air Quality Monitor.• Status light indicates fan speed.• Increases ventilation to remove odours and contaminants. • Among gases d...
Page 21 - Glossary
Operating the ControlAir 15 Plugging in the HRV/ERV energizes the unit. A self testfunction will be performed every time the HRV/ERV isenergized (refer to “Self Test” for more details). Afterthe self test has completed successfully the HRV/ERVwill default to Speed 1. This is the factory default sett...
Page 22 - To select mode of operation for ControlAir 15; Modes of Operation; OFF; No LED’s illuminated; To select speed
22 To select mode of operation for ControlAir 15 Model 500 Only Press and hold the fan selection button on the Control Pad. After 5 seconds the control willbegin to cycle each mode holding each for 2 seconds. Release the button when the desiredmode of operation is reached. Modes of Operation LED Ind...
Page 23 - Excessive positive pressure; Excessive negative pressure; BALANCING PROCEDURE; CROSS SECTION AREA; Pitot tube and gauge; PITOT TUBE AIR FLOW BALANCING
It is necessary to have balanced air flows in an HRV/ERV. The volumeof air brought in from the outside must equal the volume of air exhaustedby the unit. If the air flows are not properly balanced, then; • The HRV/ERV may not operate at its maximum efficiency • A negative or positive air pressure ma...
Page 24 - MOTOR; CORE; HRV CORE; When reinstalling; ERV CORE
Servicing your HRV/ERV on a regular schedule willr e s u l t i n o p t i m u m o p e r a t i n g e ff i c i e n c i e s a n d prolonged life of the equipment. D u e t o n u m e r o u s a p p l i c a t i o n s i n w h i c h t h i s equipment can be installed, it is difficult to predictservicing inter...
Page 25 - FILTERS; CONDENSATE DRAINS; General Maintenance
25 FILTERS O p e n f r o n t s e r v i c e d o o r t o a c c e s s t h e f i l t e r slocated in both supply and exhaust air streams.Note to remove and install filters, it may be easierto first remove the core(s). See CORE . The filters are designed to stop large particlesfrom entering in the core. ...
Page 26 - TROUBLESHOOTING YOUR HRV/ERV SYSTEM; SYMPTOM
TROUBLESHOOTING YOUR HRV/ERV SYSTEM SYMPTOM CAUSE SOLUTION Poor Air Flows Supply air feels cold Dehumidistat is not Operating Humidity Levels are too High Condensation is appearing on the windows Humidity Levels are too Low HRV/ERV and / or Ducts Frosting up Condensation or Ice Build Up in Insulated...
Page 27 - DEFROST DETAILS; AUTO-TRANSFORMER DETAIL
27 DEFROST DETAILS T9 T10 T11 T12 T13 T14 T5 T4 T3 GROUND DOOR SWITCH WHITE WHITE BLACK BLACK HIGH VOLTAGE 12V LOW VOLTAGE FIELD INSTALLED LEGEND 12V LOW VOLTAGE GRN Note: Note: All control connections are labeled by colour. Connect to corresponding colour with low voltage wire ( 20 gauge minimum). ...
Page 28 - Remote Switching; UNITS ONLY
28 FAN DEFROST Remote Switching Analogue Style Controls Wiring Diagram TEMPERATURE SENSOR BLACK BLACK BLACK BLACK BLACK BLACK BLACK BLACK BLACK BLACK BLACK WHITE WHITE WHITE WHITE WHITE WHITE BLACK ORANGE ORANGE WHITE WHITE ORANGE WHITE WHITE DEFROST TIMER DEFROST LIGHT INDICATOR TRANS- FORMER WHITE...
Page 30 - • 2 Year Limited Warranty • 15 Year Aluminum Core Warranty; NUTECH
30 COMMERCIAL LIFEBREATH ® HEAT/ENERGY RECOVERY VENTILATORS • 2 Year Limited Warranty • 15 Year Aluminum Core Warranty • 5 Year Paper Core Warranty NUTECH ENERGY SYSTEMS INC. ® (NUTECH) warrants to the purchaser of the Commercial LIFEBREATH ® model and accessories referred to below, to be free from ...