35
Operating Limits
Operating Limits
Cooling
Heating
°F
°C
°F
°C
Source Side Water Limits
Minimum Entering Water
30
-1.1
20
-6.7
Normal Entering Water
85
29.4
60
15.6
Maximum Entering Water
110
43.3
90
32.2
Load Side Water Limits
Minimum Entering Water
50
10.0
60
15.6
Normal Entering Water
60
15.6
100
37.8
Maximum Entering Water
90
32.2
120
48.9
NOTES:
Minimum/maximum limits are only for start-up
conditions, and are meant for bringing the space up to
occupancy temperature. Units are not designed to operate
at the minimum/maximum conditions on a regular basis.
The operating limits are dependant upon three primary
factors: 1) entering source temperature, 2) entering load
temperature, and 3) flow rate (gpm). When any of the
factors are at the minimum or maximum levels, the other
two factors must be at the normal level for proper and
reliable unit operation. Consult the Capacity Tables for each
model to determine allowable normal operating conditions.
Units are not designed for outdoor installation.
Pressure Drop
Model
GPM
Pressure Drop (psi)
60°F
80°F
100°F
120°F
018H
3.0
0.5
0.4
0.4
0.3
4.0
1.4
1.3
1.2
1.2
5.0
2.2
2.1
2.1
2.0
6.0
3.0
2.9
2.9
2.8
025H
4.0
1.3
1.3
1.2
1.2
5.5
3.0
2.9
2.8
2.7
7.0
4.6
4.4
4.3
4.1
8.5
6.7
6.5
6.4
6.2
7/13/09
NOTES:
Temperatures are Entering Water Temperatures.
Double wall vented coax for heating potable water
Vented Only Load Side
Model
GPM
Pressure Drop (psi)
30°F
60°F
80°F
100°F
120°F
018R*
3.0
0.5
0.4
0.4
0.3
0.3
4.0
1.1
0.9
0.9
0.8
0.8
5.0
1.6
1.4
1.4
1.3
1.3
6.0
2.1
1.9
1.9
1.8
1.8
025R*
4.0
0.7
0.6
0.4
0.3
0.3
5.5
1.3
1.1
0.9
0.7
0.6
7.0
1.9
1.7
1.5
1.3
1.2
8.5
2.6
2.4
2.2
2.0
1.9
040H/R
5.0
0.9
0.6
0.6
0.5
0.5
7.5
2.3
2.1
2.0
1.9
1.8
10.0
3.7
3.5
3.3
3.2
3.0
12.5
5.0
4.7
4.4
4.2
4.0
050H/R
8.0
1.7
1.4
1.4
1.3
1.3
11.5
3.6
3.4
3.2
3.0
2.8
15.0
5.6
5.4
5.0
4.6
4.2
18.5
8.3
8.1
7.6
7.2
6.8
060H/R
9.0
1.4
1.1
1.0
1.0
0.9
13.5
4.2
3.9
3.5
3.1
2.7
18.0
6.9
6.7
6.0
5.2
4.5
22.5
10.7
10.5
10.0
9.4
8.7
075H/R
10.0
3.2
3.0
2.8
2.7
2.5
14.5
5.5
5.3
5.1
4.9
4.7
19.0
7.9
7.6
7.3
7.1
6.8
23.5
11.5
11.3
11.0
10.8
10.5
8/9/10
NOTES:
Temperatures are Entering Water Temperatures
*Domestic water heating units source side
pressure drop and reversible units load and
source pressure drop.
AFFINITY SINGLE STAGE HYDRONIC INSTALLATION MANUAL
Содержание YAWS018 - 075
Страница 2: ......
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