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3.12
Technical data ZWB...-3A
Input/Output
Max. input rate 180/79 °F (82/26 °C)
Max. output rate 104/86 °F (40/30 °C)
Max. output rate 122/86 °F (50/30 °C)
Max. output rate 176/140 °F (80/60 °C)
Output rate domestic hot water (DHW), 113 °F (45 °C)
Output rate domestic hot water (DHW), 140 °F (60 °C)
Min. input rate 180/79 °F (82/26 °C)
Min. output rate 104/86 °F (40/30 °C)
Min. output rate 122/86 °F (50/30 °C)
Min. output rate 176/140 °F (80/60 °C)
Gas connection value
3
Natural Gas – H
= 1,010 BTU/ft
(37.3MJ/m
s
Liquid Propane Gas – H
= 2,500 BTU/ft
D-S
Permissible inlet gas pressure
NG
LPG (propane)
Expansion vessel
Pre-charge pressure
Total contents
DHW
Max. DHW flow rate
Nominal DHW flow rate (at 140 °F (60 °C) outlet temperature)
Outlet temperature
Max. cold water inlet temperature
Max. approved DHW pressure
Minimum water pressure
Flue gas
Flue gas mass flow at maximum/minimum nominal output
Flue gas temperature 176/140 °F (80/60 °C) at maximum/
minimum nominal heat input
Flue gas temperature 104/86 °F (40/30 °C) at maximum/
minimum nominal heat input
CO
at max. nominal output
2
CO
at minimum nominal output
2
Condensate
Max. condensate quantity (t
= 86 °F (30 °C))
R
pH level, approx.
General
Voltage
Frequency
Max. power consumption (central heating mode)
Max. power consumption (Stand-by)
Sound pressure level
Max. supply temperature
Max. permissible operating pressure (P
Permissible ambient temperature
Nominal water capacity (heating)
Weight (without packaging)
Dimensions, W x H x D
Table 6 Technical data ZWB28-3A..., ZWB35-3A...
Greenstar – 6721822579 (2021/01)
Unit
BTU/hr (kW)
BTU/hr (kW)
BTU/hr (kW)
BTU/hr (kW)
BTU/hr (kW)
BTU/hr (kW)
BTU/hr (kW)
BTU/hr (kW)
BTU/hr (kW)
BTU/hr (kW)
3
3
)
BTU/ft
(MJ/m
3
3
3
(93.1MJ/m
)
BTU/ft
(MJ/m
in. W.C. (mbar)
in. W.C. (mbar)
psi (bar)
gal (l)
gpm (l/min)
gpm (l/min)
°F ( °C)
°F ( °C)
psi (bar)
psi (bar)
g/s
°F ( °C)
°F ( °C)
%
%
gph (l/h)
VAC
Hz
W
W
dB(A)
°F ( °C)
) heating
psi (bar)
MS
°F ( °C)
gal (l)
lbs. (kg)
inch
(mm)
ZWB 28-3 A...
NG
LPG (propane)
100,800 (29.5)
98,600 (28.9)
93,800 (27.5)
93,800 (27.5)
93,100 (27.3)
93,100 (27.3)
89,400 (26.2)
89,400 (26.2)
93,600 (27.4)
93,600 (27.4)
91,400 (26.8)
91,400 (26.8)
24,600 (7.2)
40,100 (11.7)
23,900 (7.0)
39,900 (11.7)
23,900 (7.0)
39,600 (11.6)
21,800 (6.4)
36,200 (10.6)
3
)
99 (2.8)
–
3
)
–
39 (1.1)
3.5-10.5
–
(8.7-26.1)
–
8-13 (19.9-32.3)
10.9 (0.75)
10.9 (0.75)
3.17 (12)
3.17 (12)
2.64 (10)
2.64 (10)
2.03 (7.7)
2.03 (7.7)
104 - 140 (40 - 60) 104 - 140 (40 - 60) 104 - 140 (40 - 60) 104 - 140 (40 - 60)
140 (60)
140 (60)
150 (10.3)
150 (10.3)
4.35 (0.3)
4.35 (0.3)
12.0/3.2
11.7/4.9
147/133 (64/56)
147/133 (64/56)
117/90 (4/32)
117/90 (47/32)
9.4
11.0
8.6
10.4
0.6 (2.3)
0.6 (2.3)
4.8
4.8
120
120
60
60
205
205
< 6
< 6
≤ 39
≤ 39
187 (86)
187 (86)
30 (2.07)
30 (2.07)
32 - 122 (0 - 50)
32 - 122 (0 - 50)
0.925 (3.5)
0.925 (3.5)
110.2 (50)
110.2 (50)
17-21/64" × 33-15/32"13-57/64"
(440 × 850 × 353)
Product Description
ZWB 35-3 A...
NG
LPG (propane)
131,900 (38.6)
129,100 (37.8)
122,800 (36.0)
122,800 (36.0)
121,800 (35.7)
121,800 (35.7)
116,700 (34.2)
116,700 (34.2)
120,500 (35.3)
120,500 (35.3)
118,700 (34.8)
118,700 (34.8)
36,000 (10.5)
46,400 (13.6)
35,100 (10.3)
46,100 (13.5)
34,800 (10.2)
45,700 (13.4)
31,700 (9.3)
42,000 (12.3)
130 (3.7)
–
–
52 (1.5)
3.5-10.5"
–
(8.7-26.1)
–
8-13" (19.9-32.3)
10.9 (0.75)
10.9 (0.75)
3.17 (12)
3.17 (12)
3.17 (12)
3.17 (12)
2.6 (10)
2.6 (10)
140 (60)
140 (60)
150 (10.3)
150 (10.3)
4.35 (0.3)
4.35 (0.3)
15.7/4.5
15.2/5.6
162/135 (72/57)
162/135 (72/57)
127/91 (53/33)
127/91 (53/33)
9.4
11.0
8.6
10.4
0.8 (3.1)
0.8 (3.1)
4.8
4.8
120
120
60
60
205
205
< 6
< 6
≤ 44
≤ 44
187 (86)
187 (86)
30 (2.07)
30 (2.07)
32 - 122 (0 - 50)
32 - 122 (0 - 50)
0.925 (3.5)
0.925 (3.5)
110.2 (50)
110.2 (50)
17-21/64" × 33-15/32"13-57/64"
(440 × 850 × 353)
21
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