FIGURE 2
HEAT PUMP WITH OPTIONAL MFAD, CRV & ERV
VENTILATION PACKAGING WITH PROGRAMMABLE THERMOSTAT (RECOMMENDED)
4
Low Voltage Wiring Diagram
Thermostat | C | G | R | Y1 | Y2 | W1/E | W2 | O/B | Y O/D | L | A | Electronic | |
Bard part | Programmable | ||||||||||||
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1 | 2 | 3 | 4 | 5 | 6 |
Optional CO2 Controller 
Bard part
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24V Low Voltage | C | G | R | Y | Y1 | E | W2 | B | W1 | W3 | DH | L | O1 | Unit |
Terminal Block | ||||||||||||||
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| Red |
| 1 |
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3 |
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| Orange |
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| CRV |
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| Brown/White |
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| Black |
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| ERV |
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| Ventilation Packages |
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| Black |
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| MFAD |
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| Red |
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1 Factory Jumper Installed | ||
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2Do not connect "A" from tstat
3Connect orange wire to "G" only if optional CO2 controller is used.
Must be configured to programmable and fan
4 set to programmed for the "A" output to function during scheduled occupied periods
Manual | |
Page | 6 of 19 |