Model 850FD/DD
SPECIFICATIONS
CORES
Modular (6 section) patented aluminum heat recovery cores arranged for high efficiency crossflow ventilation.
MOTORS
Two PSC, 3 speed double shafted, 120 VAC, 3.95 Amps each (7.9 total on high speed). HP - 1/4, 1625 RPM. Watts - total on High Speed - 848.
FILTERS
Washable air filters in exhaust and supply air streams.
BLOWERS
Centrifugal type rated at 950 cfm (448 L/s) free air delivery. Each air stream has one double shafted motor driving two centrifugal blowers.
CONNECTION DUCT SIZES
Three - 20" x 8" (508 mm x 200 mm).
Stale air intake - 26" x 8" (660 mm x 200 mm).
Model 850DD - additional 20" X 8" defrost port
AIRFLOW L/s (CFM)
475(1000)
425 (900)
378 (800)
329 (700)
282 (600)
235 (500)
190 (400)
143 (300)
94(200)
42(100)
PERFORMANCE
AIRFLOWS (Each Air Stream)
HIGH | SPEED | |||
MED |
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SPEED | ||||
LOW |
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SPEED | ||||
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25 (.1) | 50 (.2) | 75 (.3) | 100 (.4) | 125 (.5) | 150 (.6) | 175 (.7) |
EXTERNAL STATIC PRESSURE IN PASCALS (in. W.C.)
7.9HIGH
7.0MED
6.6LOW
TOTAL CURRENT DRAW (AMPS) @ 120 VAC
MOUNTING
Unit to be set on support brackets hung by threaded rod type apparatus. (brackets and rods not provided).
CASE
20 gauge prepainted galvanized steel (G60) for superior corrosion resistance. Insulated with foil faced insulation where required to prevent exterior condensation. Drain connections, Two - 1/2" (12 mm) O.D.
CONTROLS
Illuminated power switch, 3 speed blower control, low voltage (24 VAC) terminals for connection of remote controls and defrost light indicating automatic operation.
DEFROST CONTROLS
Model 850FD - Interrupts supply air while exhaust air defrosts core. Model 850DD - Supply bypass routes indoor air to defrost core. WEIGHT 255 lbs. (116 kg) SHIPPING WEIGHT 280 lbs. (127 kg)
TEMPERATURE EFFECTIVENESS
EFFECTIVENESS | 90% |
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| 80% |
| 70% |
NOTE: Exhaust Relative Humidity (RH) at 40%
235 | 282 | 329 | 378 | 425 |
(500) | (600) | (700) | (800) | (900) |
AIRFLOW IN L/s (CFM)
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EXHAUST AIR |
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| EXHAUST AIR |
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TO OUTSIDE |
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| FROM BUILDING | CONTROLS |
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| MOUNTING POINTS |
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| 200 mm | 660 mm |
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| 263 mm | 508 mm | 200 mm | |
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| 850 | (26") |
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| (10 3/8") | (8") | ||
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| 8") |
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| DIMENSIONS( |
| 190 mm | 625 mm | 149 mm |
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Service clearance |
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| 172 mm |
| (7 1/2 ") |
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is 760 mm (30 in.) |
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| (6 3/4") |
| 263 mm | (24 5/8") | (5 7/8") |
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| (10 3/8 ") |
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| 508 mm |
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| 508 mm | 200 mm |
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| 200 mm | ||
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| (20") | (8") | |||
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| (8") |
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SUPPLY AIR |
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FROM OUTSIDE | 1188 mm |
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| 1055 mm |
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| DRAIN CONNECTION | SUPPLY AIR |
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DEFROST AIR | (46 3/4") |
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| (41 1/2") |
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DD MODELS ONLY | FRONT VIEW | TO BUILDING | INTERIOR DUCT |
| EXTERIOR DUCT | ||||||
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| CONNECTION SIDE |
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OPTIONS | All units conform to CSA and UL standards | |
Sixty Minute Timer |
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| WARRANTY |
Remote Wall Mount Dehumidistat Control | All units carry a 15 year warranty on the heat recovery cores | |
| 24 VAC only | and a 2 year replacement parts warranty. |
DATE: __________________________
| 511 McCormick Blvd. | |
PROJECT: ________________________________________ | London, Ontario N5W 4C8 | |
Ph: (519) | ||
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| Fx: (519) | |
MECHANICAL CONTRACTOR: ________________________________ | Email: nutech@lifebreath.com | |
Website: www.lifebreath.com | ||
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