Trane IntelliPak 2 Series, Инструкция по установке, эксплуатации и обслуживанию

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RT-SVX24Q-EN 189
Service and Maintenance
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Table 66. Control settings and time delays
Control
Description
Elec.
Designa-
tion
Contacts
Open
Contacts
Closed
Combustion
Airflow Switch
(Gas Heat
Only)
4S25 see note 1
0.1 - 0.25" wc
rise in press diff
Supply
Airflow Switch
(Gas Heat
Only)
4S38
0.03 - 0.12"
wc
0.15 + 0.05" wc
rise in press diff
Freezestat
(Hydronic
Heat Only)
4S12
(N.O.) Auto
Reset
40°F
Pre-purge
Timer:
Honeywell
(Gas Heat)
4U18
internal
timing
function
2 Stage 850/
1100 MBH 60—
seconds/All
other
configurations—
30 seconds
Sequencing
Time Delay
Relay (Gas
Heat)
4DL6
N.C. - timed
to close
60 s
20%
Note: The combustion airflow switch (4S25) differential is 0.02"
- 0.08" wc.
Table 67. Gas heat—high limit
Tons
Fan Size (in) Config.
Contacts
Open
Close
2500 MBh High Limit
120-162
40 DF 195 155
40 HZ 240 200
32 DF & HORZ 220 180
1800 MBh High Limit
120-162
32 &40 DF 240 200
32 &40 HZ 220 180
90-118
32 DF & HZ 240 200
36 DF & HZ 240 200
36 HZ 240 310
25 DF 240 200
25 HZ 220 180
1100 MBh High Limit
120-162
32 DF 240 200
32 HZ 200 160
40 DF & HZ 240 200