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30
Table 24 — 50PC048 Typical Unit Operating Pressures and Temperatures
LEGEND
*Based on 15% Methanol antifreeze solution.
Table 25 — 50PC060 Typical Unit Operating Pressures and Temperatures
LEGEND
*Based on 15% Methanol antifreeze solution.
Unit Start-Up Heating Mode
NOTE: Operate the unit in heating cycle after checking the
cooling cycle. Allow 5 minutes between tests for the pressure
or reversing valve to equalize.
1. Turn thermostat to lowest setting and set thermostat
switch to HEAT position.
2. Slowly turn the thermostat to a higher temperature until
the compressor activates.
3. Check for warm air delivery at the unit grille within a few
minutes after the unit has begun to operate.
4. Check the temperature of both supply and discharge wa-
ter. Compare to Tables 15-25. If temperature is within
range, proceed. If temperature is outside the range, check
the heating refrigerant pressures in Tables 15-25.
5. Once the unit has begun to run, check for warm air deliv-
ery at the unit grille.
6. Check air temperature rise across the coil when compres-
sor is operating. Air temperature rise should be between
20 and 30 F after 15 minutes at load.
7. Check for vibration, noise and water leaks.
Unit Start-Up with WSHP Open Controls —
The WSHP Open is a multi-protocol (default BACnet*) con-
troller with extensive features, flexible options and powerful
capabilities. The unit comes from the factory pre-programmed
and needs minimal set up to function in a BAS (Building
Automation System) system or provide additional capabilities
to Carrier's WSHP product line. Most settings on the controller
have factory defaults set for ease of installation. There are a
few settings that must be configured in the field and several
settings that can be adjusted if required by unique job condi-
tions. Refer to Appendix A — WSHP Open Screen Configura-
tion. In order to configure the unit, a BAC
view
6
display is
required. See Fig. 29.
NOTE: If the WSHP Open control has lost its programming,
all display pixels will be displayed on the SPT sensor. See the
WSHP Third Party Integration Guide.
When the unit is OFF, the SPT sensor will indicate OFF.
When power is applied, the SPT sensor will indicate tempera-
ture in the space at 78 F.
ENTERING
WATER
TEMP
(F)
WATER
FLOW
(GPM/ton)
COOLING
HEATING
Suction
Pressure
(psig)
Discharge
Pressure
(psig)
Super-
heat
(F)
Sub-
cooling
(F)
Water
Temp
Rise
(F)
Air Temp
Drop
(F) DB
Suction
Pressure
(psig)
Discharge
Pressure
(psig)
Super-
heat
(F)
Sub-
cooling
(F)
Water
Temp
Drop
(F)
Air Temp
Rise
(F) DB
30*
1.5
119-129
190-210
15-20
10-15
19.3-21.3
18-26
63- 73
284-304
5-10
3-8
6.9- 8.9
17-25
2.25
119-129
179-199
15-20
9-14
14.6-16.6
19-27
66- 76
288-308
6-10
3-8
5.0- 7.0
18-26
3
119-129
158-178
15-20
9-14
9.8-11.8
19-27
69- 79
292-312
6-11
3-8
3.1- 5.1
18-26
50
1.5
124-134
248-268
10-15
10-15
19.0-21.0
18-26
92-102
309-329
8-13
3-8
9.5-11.5
23-31
2.25
123-133
230-250
10-15
9-14
14.3-16.3
19-27
96-106
313-333
9-14
3-8
7.0- 9.0
24-32
3
123-133
213-233
10-15
9-14
9.6-11.6
19-27
100-110
317-337
9-14
3-8
4.6- 6.6
24-32
70
1.5
129-139
337-357
8-13
12-17
18.6-20.6
17-25
123-133
339-359
11-16
3-8
12.5-14.5
29-37
2.25
129-139
328-348
8-13
11-16
14.0-16.0
18-26
128-138
344-364
11-16
3-8
9.3-11.3
29-37
3
129-139
300-320
8-13
11-16
9.4-11.4
18-26
133-143
350-370
12-17
3-8
6.2- 8.2
30-38
90
1.5
134-144
426-446
6-11
15-20
18.2-20.2
16-24
153-163
369-389
14-19
1-6
15.4-17.4
33-41
2.25
134-144
406-426
6-11
15-20
13.7-15.7
17-25
160-170
376-396
15-20
1-6
11.6-13.6
35-43
3
134-144
386-406
6-11
15-20
9.2-11.2
17-25
167-177
384-404
16-21
1-6
7.8- 9.8
36-44
110
1.5
140-150
560-580
4- 9
23-28
17.7-19.7
16-24
—
—
—
—
—
—
2.25
140-150
536-556
4- 9
20-25
13.4-15.4
16-24
—
—
—
—
—
—
3
139-149
511-531
4- 9
18-22
9.0-11.0
16-24
—
—
—
—
—
—
DB
—
Dry Bulb
—
—
No Heating Operation in This Temperature Range
ENTERING
WATER
TEMP
(F)
WATER
FLOW
(GPM/ton)
COOLING
HEATING
Suction
Pressure
(psig)
Discharge
Pressure
(psig)
Super-
heat
(F)
Sub-
cooling
(F)
Water
Temp
Rise
(F)
Air Temp
Drop
(F) DB
Suction
Pressure
(psig)
Discharge
Pressure
(psig)
Super-
heat
(F)
Sub-
cooling
(F)
Water
Temp
Drop
(F)
Air Temp
Rise
(F) DB
30*
1.5
108-118
180-200
16-21
10-15
20.6
19-27
61- 71
314-334
6-11
14-19
7.6- 9.6
19-27
2.25
108-118
165-185
16-21
9-14
15.2-17.2
20-28
64- 74
317-337
7-12
13-18
5.6- 7.6
20-28
3
108-118
150-170
16-21
9-14
9.7-11.7
20-28
66- 76
319-339
7-12
13-18
3.6- 5.6
20-28
50
1.5
113-123
206-226
11-14
10-15
19.8-21.8
18-26
90-100
350-370
11-16
14-19
10.5-12.5
25-33
2.25
113-123
190-210
11-14
9-14
14.5-16.5
19-27
95-105
357-377
11-16
14-19
7.9- 9.9
27-35
3
113-123
173-193
11-14
9-14
9.3-11.3
19-27
99-109
364-384
10-15
14-19
5.2- 7.2
28-36
70
1.5
119-129
305-325
9-14
12-17
18.8-20.8
17-25
123-133
391-411
12-17
14-19
13.7-15.7
33-41
2.25
118-128
287-307
9-14
11-14
13.8-15.8
18-26
129-139
399-419
12-17
14-19
10.3-12.3
34-42
3
118-128
269-289
9-14
11-14
8.8-10.8
18-26
135-145
407-427
13-18
14-19
6.9- 8.9
35-43
90
1.5
124-134
402-422
7-12
14-19
17.8-19.8
16-24
157-167
431-451
13-18
13-18
16.8-18.8
38-46
2.25
124-134
382-402
7-12
13-18
13.1-15.1
17-25
164-184
440-460
14-19
13-18
12.7-14.7
39-47
3
123-133
363-383
7-12
13-18
8.3-10.3
17-25
172-182
450-470
16-21
12-17
8.6-10.6
41-49
110
1.5
130-140
500-520
7-12
20-25
17.0-19.0
16-24
—
—
—
—
—
—
2.25
129-139
479-499
6-11
16-21
12.4-14.4
16-24
—
—
—
—
—
—
3
128-138
458-478
5-10
13-18
7.8- 9.8
16-24
—
—
—
—
—
—
DB
—
Dry Bulb
—
—
No Heating Operation in This Temperature Range
*Sponsored by ASHRAE (American Society of Heating, Refrigerat-
ing and Air Conditioning Engineers).
Summary of Contents for AQUAZONE 50PCH
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