SECTION 10: WIRING AND ELECTRICAL INFORMATION
10.3 DAT Main Circuit Board Terminal Identification
Terminal | Use | Relay/Function | Operation | |
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| Input for Remote Fan Opera- | Optional - Main Fan Runs from | |
1 Input or Output | External Fan Control | tion Output for Fan Operation | ||
External Control | ||||
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2 Output | 230 V to external control |
| 230 V 50 Hz supply of external | |
| thermostat or control | |||
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3 Input | Burner On | Burner Fires. | Burner Operates. | |
R1 energizes with gas valve | Fan Operates via R1 | |||
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4 Output | 230 V Burner ON Signal |
| Optional Remote Indication of | |
| Burner ON. | |||
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5 Output | Neutral for Signals |
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& External Control |
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7 Output | 230 V Burner Lockout Signal |
| Optional Remote Indication of | |
| Burner Lockout | |||
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8 Input | Burner Lockout Reset from N |
| Optional Remote Burner Lock- | |
(5) |
| out Reset (must be from N) | ||
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| Site Wiring to Condensers | DualAir® units contains Coil | |
| Volt Free Safety Circuits for | Frost Thermostat, Coil Pres- | ||
9 & 10 | Normally Closed Controls | |||
External Condensers | sure Switch & Auxiliary Contact | |||
| Break on Fault Position | |||
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| on Contactor | ||
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| 230 V 1st Stage of Cooling |
| Burner OFF | |
11 Input | R2 On | Fan ON from R2 | ||
(Free Cooling) | ||||
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| Dampers Output to T16 | ||
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| Burner OFF | |
| 230 V 2nd Stage of Cooling | R2 OFF | Fan ON from R3 | |
12 Input | Dampers Output to T15 | |||
Cooling Coil Stage 1 | R3 ON | |||
| Output to Condenser 1 at T17 | |||
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| 230 V 3rd Stage of Cooling | R3 ON | All input 12 Operations | |
13 Input | Cooling Coil Stage 2 | Output to Condenser 2 at T19 | ||
R4 ON | ||||
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| 230 V Output for Optional |
| 14 = Neutral | |
14, 15 & 16 Output | From R2 | 15 = Recirculated Air | ||
Damper | ||||
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| 16 = Fresh Air | ||
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17 & 18 | Volt Free Control Circuit | R3 ON | Normally Open Contact | |
Condenser 1 |
| for Condenser 1 | ||
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| Volt Free Control Circuit | R3 ON | Normally Open Contact | |
19 & 20 | R4 ON | |||
Condenser 2 | for Condenser 2 | |||
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21 & 22 Output | 230 V Output to |
| 21 = L | |
Remote Dirty Filter Warning |
| 22 = N | ||
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| Volt Free Output to | Alternative Dirty Filter Indica- | Normally Open Contact | |
23 & 24 | tion for BMS or DualAir® Con- | |||
Remote Dirty Filter Warning | for Dirty Filter Indication | |||
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25 & 26 Input | 0 - 10 V DC Input for | T3 Must Be Live to Operate | 0 V = Minimum Fire | |
Modulating Burner | Burner | 10 V = Maximum Fire | ||
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