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IOM Instructions
Unit Start Up Procedure
Table 7: Coax Water Pressure Drop
Model
GPM
30°F
10.5
2.4
HKV084
15.75
5.5
21
9.2
12
3.8
HKV096
18
8.0
24
13.0
15
2.1
HKV120
22.5
5.3
30
9.4
19
2.7
HKV150
28
6.2
38
11.0
21
2.7
HKV168
31.5
6.1
42
10.4
24
4.2
HKV092
36
9.0
48
14.6
30
2.4
HKV240
45
5.9
60
10.5
38
3.1
HKV300
56
7.0
76
12.4
HKV LArge CommerCiAL
Pressure Drop
50°F
70°F
90°F
2.0
1.2
1.1
4.6
3.4
3.0
7.9
6.2
5.7
3.1
2.3
2.0
6.8
5.3
4.8
11.2
9.2
8.6
1.7
1.2
1.0
4.4
3.5
3.2
8.1
6.7
6.2
2.1
1.5
1.3
5.2
4.1
3.7
9.5
7.7
7.2
2.2
1.4
1.2
5.2
3.8
3.4
8.9
6.9
6.4
3.5
2.6
2.3
7.6
6.0
5.5
12.6
10.3
9.6
1.9
1.3
1.1
4.9
3.9
3.6
9.2
7.5
7.0
2.4
1.7
1.5
5.9
4.6
4.2
10.7
8.7
8.1
CXM Safety Control Reset
Lockout - In Lockout mode, the Status LED will begin fast
flashing. The compressor relay is turned off immediately.
Lockout mode can be soft reset via the thermostat "Y"
input or can be hard reset via the disconnect. The last fault
causing the lockout will be stored in memory and can be
viewed by going into test mode.
Fault Retry - In Fault Retry mode, the Status LED begins
slow flashing to signal that the control is trying to recover
from a fault input. The CXM control will stage off the
outputs and then "try again" to satisfy the thermostat "Y"
input call. Once the thermostat input calls are satisfied,
the control will continue on as if no fault occurred. If 3
consecutive faults occur without satisfying the thermostat
"Y" input call, then the control will go to Lockout mode. The
last fault causing the lockout will be stored in memory and
can be viewed by going into test mode.
Consult the CXM manual for complete descriptions.
CAUTION!
CAUTION! Do not restart units without inspection and
remedy of faulting condition. Equipment damage may occur.
39
Heat Controller, Inc.
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Troubleshooting
