COMMERCIAL RECOVERY PLATE - BELT DRIVE | WPBB20HN
WPBB20HN
Capacity: 1,000 - 2,000 CFM
CABINET
Double wall cabinet
Galvanized 22 ga steel exterior
Galvanized 22 ga steel interior
Unit Weight: 600 lbs.
Access door with 1/4 turn handle
Insulation: 1”
Drain pan (galvanized 22 ga steel)
Drain connections under unit: 1 inNPT
Options:
• White exterior paint, 22 ga steel
• Pool option (c/w TEFC motor, stainless steel
interior and epoxy coated fans)
MOUNTING
On platform
BLOWERS
Type: forward curved
Permanently sealed with lubricated ball
bearings
Diameter: 10-1/4”
Width: 9-9/16”
Shaft: 3/4”
Power transimission by adjustable pulleys and
belts
MOTORS
Type: inverter duty 10:1, E-Pact efficiency, ODP
Speed: 1800 rpm
Maximum power: 3 HP
Options:
• TEFC motors
• Variable speed: variable speed drives on
motors (0-10VDC control signal by others)
FILTERS
Efficiency: MERV 8
Quantity: 4, 2 per airstream
Dimensions: 20” x 20” x 2”
• Optional: MERV13 supply filters
• Optional: dirty filter contacts
INDOOR UNIT
Technical Data
AHRI Certified Enthalpy Recovery
CORE
Quantity: 2
Enthalpy: dimensions: 21.22” x 21.22” x 19.375”
Pitch: 2.5mm
DAMPER OPTIONS
• Motorized and insulated dampers (on OA
and EA openings)
• Non insulated backdraft damper (on EA
opening only)
FROST CONTROL
For outside temperatures below 14°F (-10°C),
frost control is required. Available options:
• Exhaust only defrost, comes with isolated
and motorized insulated damper on fresh air
intake).
• Electric pre-heat coil in ductwork ahead of
unit (provided, installed and controlled by
others).
ELECTRICAL
24 Volt contactor for each motor (double)
with start/stop dry contact.
24 Volt transformer for controls/accessories.
Access panel with non-fused NEMA 4
disconnect.
• Optional: fused NEMA 4 disconnect
Electrical protection.
Available power:
120/1/60 208/1/60 230/1/60
208/3/60 230/3/60 460/3/60 575/3/60
WARRANTY
Core — limited ten-year warranty.
All other covered components — limited twoyear warranty.
Recovery Plate
www.carnes.com revised 02/18/2015 D-1
DIMENSIONS | WPBB20HN
WPBB20HN
Dimensions
67-7/8”
19-3/4”
TOP VIEW
INDOOR UNIT
Technical Data
42”
35-1/4”
EXHAUST
AIR
SUPPLY
AIR
PANEL
FAN AND
CONTROL
FRONT VIEW
HEAT RECOVERY
CORE AND FILTER
62”
DRAIN CONNECTION
UNDER UNIT (1” NPT)
OUTSIDE
AIR
RETURN
AIR
Recovery Plate
13-1/8”
43-1/2”
LEFT VIEW
8-7/8”
16-1/4”
11-1/2”
26-1/2”
13-1/2”
40-3/8”
24”
6”
26-1/2”
39”
RIGHT VIEW
D-2 revised 02/18/2015 www.carnes.com
CORE & AIR FLOW PERFORMANCE | WPBB20HN
WPBB20HN
Core Performances
Standard Conditions AHRI Conditions
Outside Temperature Winter Summer
Exhaust Air Temperature Winter Summer
*The efficiencies are based on standard winter condition of AHRI.
INDOOR UNIT
Technical Data
WPBB20H - 2.5mmHE
Enthalpy Core Efficiency
Dry Bulb 35°F (1.7°C) 95°F (35°C)
Wet Bulb 33°F (0.6°C) 78°F (25.6°C)
Dry Bulb 70°F (21.1°C) 75°F (23.9°C)
Wet Bulb 58°F (14.4°C) 63°F (17.2°C)
Air Flow Performance Charts
WPBB20H Enthalpy Core 2.5mmHE
Supply Temperature T2 (T3 at 21°C DB/14°C WB)
WPBB20H (Enthalpy HE Core) - External Static Pressure (in H2O) - SUPPLY/RETURN AIR
Recovery Plate
www.carnes.com revised 02/18/2015 D-3
INTERNAL STATIC PRESSURE | WPBB20HN
WPBB20HN
Internal Static Pressure
WPBB20H
Internal APD
INDOOR UNIT
Technical Data
WPBB20H
Additional pressure drop
with MERV13 filters
Air Flow APD
(cfm) (in H2O)
1000 0.07
1100 0.08
1200 0.10
1300 0.11
1400 0.12
1500 0.13
1600 0.15
1700 0.16
1800 0.17
1900 0.18
2000 0.20
Recovery Plate
D-4 revised 02/18/2015 www.carnes.com
ORDERING INFORMATION | WPBB20HN
Plate Type - Belt Drive
Supply Exh.
Model Number Series Unit Size Type Type Duct HP HP Volt Listing
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
P
W
Design Plate Motor Motor Unit
B B
2 0
H N H
OPTIONS
W - Energy
Recovery
P - Plate Type
B - Belt Drive
UNIT SIZE
20
H - Enthalpy
Core
N - Indoor
H - Horizontal
J - Pool Option,
Horiz. Ducts
R - 3/4 HP
S - 1 HP
V - 2 HP
W - 3 HP
N - Non-Listed
E - ETL Listed
(Default)
A - 115V, 1 Ph.
B - 208V, 1 Ph.
C - 208V, 3 Ph.
D - 240V, 1 Ph.
E - 240V, 3 Ph.
G - 480V, 3 Ph.
H - 600V, 3 Ph.
G - Fused Disconnect & 24VAC
Transformer
H - Non-Fused Disconnect &
24VAC Transformer
(Default)
E - Electrical Protection (Default)
D - Painted Cabinet & Electrical Protection
S - Motorized Dampers, Electrical Protection
V - Motorized Dampers, Painted Cabinet
& Electrical Protection
K - 24V Contactor
(Double)
J - Exhaust Only
Frost Control
Contact Factory
For Approval
1 - Single VFD,
Runs Both Fans
2 - Supply & Exhaust
Fan VFD’s
3 - Supply Fan Only VFD
4 - Exhaust Fan Only VFD
Optional Controls
Model Number Series Unit Size
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Y
W
Design
P B
2 0
OPTIONS
X X
X X X X X X X
W - Energy
Recovery
Y - Attached
and Wired
P - Plate Type
UNIT SIZE
20
F - Dirty Filter
Switch
WPBB’s Only
M - MERV13
Supply
Filters
www.carnes.com revised 02/18/2015 D-5
Recovery Plate
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