Installation – Greenheck ERCH (476054) User Manual
Page 7
General Description - NOT model specific
Model ERCH Energy Recovery Ventilator
®
7
Model
Configuration
Outside
Curb
Dimensions
Recommended
Roof
Openings
Optional
Piping
Vestibule
12 inch
Curb
Weight
12 inch
Curb
Weight
with Piping
Vestibule
Curb
weight
only
Curb Weight
with Piping
Vestibule
Length Width
A
B
C
D
Adder per inch
ERCH-20
Heating Only
71.8
49.9
28.6
45.2
30
16.6
134
157
+6.9
+8.3
Cooling Coil*
91.8
49.9
37
147
179
+7.7
+9.5
PDX
103.8
49.9
40.7
166
199
+8.3
+10.1
WSHP
NA
NA
NA
Evap Cooling
ERCH-45
Heating Only
79.9
60
29.5
55.3
35.1
16.6
157
180
+8.0
+9.4
Cooling Coil*
99.9
60
37
170
202
+8.8
+10.6
PDX
114.9
60
44.5
195
228
+9.5
+11.4
WSHP
NA
NA
NA
Evap Cooling
ERCH-55
Heating Only
93.1
70.8
40.6
66
41.8
16.6
184
207
+9.3
+10.7
Cooling Coil*
112.1
70.8
37
196
228
+10.1
+11.9
PDX
129.1
70.8
58.6
228
260
+10.9
+12.7
WSHP
NA
NA
NA
Evap Cooling
ERCH-90
Heating Only
105.1
90.1
41.4
85.4
51.1
16.6
231
254
+11.2
+12.6
Cooling Coil*
112.1
70.8
37
196
228
+12
+13.8
PDX
147.1
90.1
61.4
291
323
+13.1
+14.9
WSHP
NA
NA
NA
Evap Cooling
*With or without heating.
PDX = Packaged Direct Expansion
WSHP = Water-Source Heat Pump
All dimensions are in inches. All weights are in pounds. Various curb heights are available, use the adder per inch column to
determine the weights above 12 inches.
Curb Outside Dimensions, Recommended Roof Openings and Curb Weights
Curb
Height
1/2 inch
1.63
inches
1.9 inches
Unit Base
Curb Duct
Adaptor
1 inch
Curb
1-inch Foam Insulation
Curb Cap Details for Factory-Supplied Roof Curbs
SUPPLY AIR
DISCHARGE
RETURN AIR INTAKE
OPTIONAL
PIPING VESTIBULE
A
B
L
W
26.1 inches
C
D
Installation