RT-SVX36K-EN 165
Maintenance
Table 68. Control settings and time delays
Control Description Elec. Designation Contacts Open Contacts Closed
Compressor Circuit Breakers
20 - 130 1CB8 thru 1CB11 See Table 69, p. 165 See Table 69, p. 165
Combustion Airflow Switch
(Gas Heat Only)
4S25 see Note 0.1 - 0.25" wc rise in press diff
High Limit Cutout
(Gas Heat Only)
4S26 250 + 15°F 210°F
Supply Airflow Switch
(Gas Heat Only)
4S38 0.03 - 0.12" wc 0.15 + 0.05" wc rise in press diff
Disch High Limit
(Electric Heat Only)
4S27 133 + 5°F 110 + 5°F
Linear High Limit
(Electric Heat Only)
4S33
185 + 10°F (std./UL) 145°F (std./UL)
165 F + 10°F (CSA) 125°F (CSA)
Freezestat
(Hydronic Heat Only)
4S12 (N.O.) Auto Reset 40°F
Gas Heat Units
Prepurge Timer: Honeywell
Sequencing Time Delay Relay
4U18
4DL6
internal timing function
N.C. - timed to close
60 seconds
60 seconds + 20%
Note: The combustion airflow switch (4S25) differential is 0.02" - 0.08" wc.
Table 69. Compressor circuit breakers (1CB8 - 1CB11) electrical characteristics
Unit Size Comp Designation
200 V 230 V
Must Hold Must Trip Must Hold Must Trip
20 1A,1B 50.4 58 43.2 49.7
Hi Cap. 1A,1B 50.4 58 43.2 49.7
25
1A 50.4 58 43.2 49.7
1B 57.1 65.7 51.4 59.2
Hi Cap.
1A 50.4 58 43.2 49.7
1B 63.1 72.5 57.1 65.7
30 1A,1B 63.1 72.5 57.1 65.7
Hi Cap
1A 63.1 72.5 69.3 79.7
1B 57.1 65.7 59.4 68.3
40
1A,2A 38.1 43.8 37 42.5
1B,2B 45.5 52.3 38.7 44.5
Hi Cap 1A,1B,2A,2B 45.5 52.3 38.7 44.5
50 1A,2A, 1B,2B 50.4 58 43.3 49.7
Hi Cap
1A,2A, 50.4 58 43.3 49.7
1B,2B 57.2 65.7 51.4 59.2
55 1A,1B,2A,2B 57.2 65.7 51.4 59.2
60
1A,2A 57.1 65.7 51.4 59.2
1B,2B 63.1 72.5 57.1 65.7
Hi Cap 1A,1B,2A,2B 63.1 72.5 57.1 65.7
70 1A,1B,2A,2B 69.3 79.7 59.4 68.3
75
1A,2A 73.7 84.7 63.1 72.5
1B,2B 105.2 121 90.7 104.3
Hi Cap
1A,2A 73.7 84.7 63.1 72.5
1B,2B 105.2 121 90.7 104.3
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