E
NGINEERING
S
PECIFICATIONS
EMPIRE
SERIES SPECIFICATIONS
(Performance specifications subject to testing error of
+
/- 3%)
The following shall be the specifications for the solar collectors. Collectors shall
be SunEarth Empire model ________, and shall be of the glazed liquid flat plate
type. Collectors shall be tested in conformance with ASHRAE 93-2003 and Solar
Rating and Cerification Corporation (SRCC)100-10, ISO 9806-1 & 9806-2 and have
their thermal performance rated according to SRCC Document RM-1. The collec-
tors shall be certified by SRCC and the Florida Solar Energy Center (FSEC), and list-
ed by the International Association of Plumbing and Mechanical Officials (IAPMO).
GENERAL
The dimensions of the collector shall be _________ inches in length, _________
inches in width and 3.25 inches in depth. The collector casing shall be an anod-
ized aluminum extrusion (alloy 6063 T6), minimum thickness 0.060 inch, with
an architectural dark bronze finish. The casing shall have notched framewalls
for ease of plate removal and reinstallation. Sheet metal screwed fasteners
shall be stainless steel (18-8 #10). The backsheet shall be painted textured alu-
minum not less than 0.014 inch thickness. A 1 inch vent plug shall be installed
in each of the four corners of the backsheet to minimize condensation. An inte-
gral mounting channel shall allow the solar collector to be mounted without
penetration of the extruded aluminum casing.
GLAZING
The collector glazing shall be one sheet of low iron tempered glass, with a
minimum of 0.125 inch thickness (0.15625 inch on EC/EP-40, EC/EP-40-0.75),
and a minimum transmissivity of 91 percent (89 on EC/EP-40, EC/EP-40-0.75).
The glazing shall be thermally isolated from the casing by a continuous EPDM
gasket. There shall be a continuous secondary silicone seal between the glass
and casing capstrip to minimize moisture from entering the casing.
INSULATION
The insulation shall be foil-faced polyisocyanurate foam sheathing board of a
minimum 1 inch thickness, siliconed in place to the aluminum backsheet, cov-
ered by low-binder fiberglass of a minimum 1 inch thickness, providing thermal
isolation of the foam from the absorber plate. Total thermal resistance shall be
a minimum of R-12. The sides and ends of the collector shall be insulated with a
minimum of 1 inch foil-faced polyisocyanurate foam sheathing board.
ABSORBER PLATE AND PIPING
The absorber shall consist of a roll-formed copper plate of no less than 0.008
inch thickness. Risers shall be a minimum of 0.50 inch O.D. Type M copper
tubing on no more than 4.56 inch centers continuously soldered to the plate
utilizing a non-corrosive solder paste with a melting point of 460
o
F. The risers
shall be brazed to 1.125” O. D. Type M copper manifolds (0.875” O.D. Type L on
EC/EP-24-0.75, EC/EP-32-0.75 and EC/EP-40-0.75) utilizing a copper phospho-
rous brazing alloy with no less than a minimum 5 percent silver content, and
conforming to the American Welding Society’s BCuP-3 classification. EPDM
grommets shall isolate the manifold from the aluminum casing. The absorber
plate shall be designed for 160 psig maximum operating pressure.
ABSORBER COATING AND PERFORMANCE CURVE
A) Black Chrome (EC Series): The absorber coating shall be black chrome on nickel
with a minimum absorptivity of 95 percent and a maximum emissivity of 12 per-
cent. The instantaneous efficiency of the collector shall be a minimum Y-intercept
of 0.735 and a slope of no less than -0.730 BTU/ft
2
.hr.oF.
B) Moderately Selective Black Paint (EP Series): The absorber coating shall be
a moderately-selective black paint with a minimum absorptivity of 94 percent
and a maximum emissivity of 56 percent. The instantaneous efficiency of the
collector shall have a minimum Y-intercept of 0.726 and a slope of no less than
-0.910 BTU/ft
2
.hr.oF.
Note Please refer to the SRCC website at www.solar-rating.org for the
actual y-intercept and slope for each collector.
Due to SunEarth’s policy of continuous product improvement, specifications are subject to change without notice.
8425 Almeria Ave.
•
Fontana, CA 92335
(909) 434-3100
•
Fax (909) 434-3101
MANUFACTURED BY:
AVAILABLE FROM:
ES
4/13
MODEL EP
THERMAL PERFORMANCE RATINGS*
MODEL EC
A(-9
o
F)
B
(9
o
F)
C
(36
o
F)
D
(90
o
F)
E(144
o
F)
1,290
1,210
1,035
600
150
965
890
720
315
-
645
570
410
70
-
Category
(Ti-Ta)
A(-9
o
F)
B
(9
o
F)
C
(36
o
F)
D
(90
o
F)
E(144
o
F)
1,360
1,250
1,070
700
330
1020
910
745
400
95
690
580
420
120
-
Thermal performance is obtained by multiplying the collector output for the appropriate application and insolation level by the total gross collector area
EC/EP-21
EC/EP-24
EC/EP-40
EC/EP-40-0.75
40.2
36.2
48.2
48.2
76.2
98.2
122.2
122.2
3.25
3.25
3.25
3.25
21.8
24.7
40.9
40.9
18.8
21.9
37.2
37.2
70
80
141
0.72
0.78
1.20
0.62
0.73
1.20
1.20
W
idth
Inches
Length Inches
Depth Inches
Gr
oss A
rea
Sq Ft
Net A
per
tur
e
Sq Ft
Dr
y W
eigh
t,
Lbs
.
Fluid C
apacit
y
U.S. G
allons
W
ater D
esig
n
Flo
w R
ate GP
M
SunEar
th
Model No
.
71.63
93.63
115.63
115.63
43.38
39.38
51.38
51.38
1
1
1
0.75
Header
, C
en
ter
to C
en
ter
, In
ch
es
St
d. Header
W
idth, I
nches
St
d. Header
Di
amet
er, I
nch
es
Nominal
Max F
low
Ra
te GP
M
12
12
12
6
0.003
0.005
0.009
Pressur
e Dr
op
at D
esig
n F
low
Ra
te in PSIG
EC/EP-32-0.75
48.2
98.2
3.25
32.8
29.7
0.97
93.63
51.38
0.75
6
40% P
ropolyne
Gly
col D
esig
n
Flo
w R
ate GP
M
0.71
0.84
EC/EP-32
48.2
98.2
3.25
32.8
29.7
106
1.00
0.97
93.63
51.38
1
12
0.006
1.11
1.39
1.39
1.11
ASTM E330 Maximim Test Load ±90 psf -
Apply the appropriate factors of safety according to the test standards and local building code requirements when designing a solar thermal system
BTU/ft
2
.Day
BTU/ft
2
.Day
EC/EP-24-0.75
36.2
98.2
3.25
24.7
21.9
80
0.65
0.73
93.63
39.38
0.75
6
0.005
0.84
106
141
0.83
1.03
0.009
0.006
Medium Radiation
2000
BTU/ft2.Day
Category
(Ti-Ta)
High Radiation
1500
BTU/ft2.Day
Low Radiation
1000
BTU/ft2.Day
Medium Radiation
2000
BTU/ft2.Day
High Radiation
1500
BTU/ft2.Day
Low Radiation
1000
BTU/ft2.Day
R E C Y C L E D P A P E R — S O Y B A S E D I N K
www.sunearthinc.com
Appendix D
