334000 Autry Street, Livonia, MI 48150 • 800.968.5530 • Fax 734.419.0209 • www.hamiltonengineering.com • LIT91178 REV 5/2017
Page 5 of 9
TESTING
The following steps require the power supply be turned back on; extreme caution must be exercised
when performing service with the power supply on and the door off.
• When turning the appliance back on, listen for significant noises from the fan and pump. Also, inspect
for leaks at the pump connections.
• Press the reset button from the home screen to access the sensor readings, and record each reading,
making sure that all sensors and thermometers are reading the same, with the heat off.
• Fire the appliance on maximum output for 5 minutes, in order to check the ∆T from the inlet sensor to
the outlet sensor.
- If the ∆T reading is out of design range by more than 10% or there is an E6 error on the
display, refer to coil cleaning instructions below. Record ∆T to track any increases from one
year to the next.
• Fire the appliance on maximum output, and measure and adjust the CO
2
percentage as required.
• Fire the appliance on minimum output, and measure and adjust the CO
2
percentage as required.
• If there are an unusual number of F5 or F6 faults or if combustion is off significantly, gas supply
pressure must be verified at static (no load) and full building load conditions.
• See Table 3-3, Page 17 for specific settings.
• Inspect intake and exhaust screens at the termination point for signs of contamination (i.e. leaves, twigs, etc).
• A differential pressure (∆P) reading should be taken across the exhaust and inlet air connection points
of each appliance to confirm that it is below the maximum shown below.
NOTE: The inlet air pressure should be negative.
MODEL
AIR PRESSURE
(∆P)
MODEL
AIR PRESSURE
(∆P)
HW129
< .6” wc
HW399
< 1” wc
HW179
< .96” wc
HW599
< .86” wc
HW199.1
< .68” wc
HWH 1499-1999
< .8” wc
Hamilton EVO Products
Flow and Pressure Drop (GPM Feet of Head)
Design
HW 79 - 129
(.8)
HW 179 - 199.1
(.8)
HW 299
HW 399
HW 599
HW 1499
HW 1999
Flow Rate
GPM
Head
GPM
Head
GPM
Head
GPM
Head
GPM
Head
GPM
Head
GPM
Head
2.2
1.8
3.5
2.1
6.6
3.4
13.2
4.8
22.0
5.9
52.8
6.3
70.4
6.2
3.3
4.6
4.4
3.9
8.8
6.0
15.4
6.5
24.2
7.2
57.2
7.4
76.3
7.4
Hydronic
4.4
(4)
7.9
6.6
(5)
7.9
11.0
9.3
17.6
8.5
26.4
9.4
61.6
8.6
82.2
8.6
5.3
11.6
7.7
12.5
13.2
13.4
19.8
10.8
30.8
11.6
70.5
11.2
99.8
12.6
6.2
15.4
8.8
15.2
15.4
18.3
22.0
13.4
35.2
15.2
79.3
14.2
111.5
15.8
DHW - direct
6.6
17.7
9.9
17.7
16.5
21.1
26.4
19.2
39.6
21.3
92.5
19.3
123.3
19.3
7.7
24.1
11
21.5
17.6
23.9
30.8
26.2
41.8
21.4
96.9
21.2
129.2
21.2
8.8
31.5
12.1
29.5
19.8
30.2
33.0
30.1
44.0
23.7
101.3
23.1
135.0
23.1
Model
BTU/hr.
Input
Minimum
Hydronic
Flow
∆
P at
Minimum
Flow
Rate - ft.
of head
Hydroni
c Pipe
Size
DHW
Pipe
Size
HWH 79
80,000
2.23
3.3
1"
34.6
19.2
1"
HWD 79
80,000
23.5
13.1
HWH 129
136,300
3.64
3.5
1"
58.9
32.7
1"
HWD 129
136,300
40.1
22.2
HWH 179
186,600
5.06
3.3
1"
53.7
29.8
1"
HWD 179
186,600
36.6
20.3
HWH 199.1
199,999
5.63
3.5
1"
57.6
32.0
1"
HWD 199.1
199,999
39.2
21.8
HWH 299
300,000
8.45
4.9
1.5"
51.8
28.8
1.5"
HWD 299
300,000
35.3
19.6
HWH 399
399,999
11.31
3.5
1.5"
43.2
24.0
2"
HWD 399
399,999
29.4
16.3
HWH 599
630,000
17.74
4.9
1.5"
45.3
25.2
2"
HWD 599
630,000
30.9
17.1
HWH 1499
1,500,000
42.13
5.2
2.5"
46.3
25.7
2.5"
HWD 1499
1,500,000
31.5
17.5
HWH 1999
1,999,999
58.45
5.2
2.5"
46.3
25.7
2.5"
HWD 1999
1,999,999
31.5
17.5
Design
∆
T
Hydronic
@ 95%
efficiency
°F °C
Design
∆
T
DHW
@ 97%
efficiency
°F °C
Effective 11/2007 -
Added minimum flow and pressure drop 3.09
LIT 91149
34000 Autry Street, Livonia, MI 48150 • 800.968.5530 • Fax 734.419.0209 • www.hamiltonengineering.com • LIT91149 REV 4/2009
ANNUAL INSPECTION CONT.
