INSTALLATION INSTRUCTIONS SINGLE STAGE HEAT PUMPS LOW VOLTAGE CONTROL CIRCUIT WIRING MODELS W**H W**H*D S**H S**H*D T**H T**H*D Bard Manufacturing Company, Inc. Bryan, Ohio 43506 Since 1914...Moving ahead just as planned.
Contents Installation Instructions Wiring – Low Voltage Wiring...................................... 3 Operating Voltage Range........................................... 3 Low Voltage Connection............................................ 3 Wiring Diagram Figure 11 Heat Pump w/CS2000A*......................... 15 Figures Tables Figure 1 Basic HP w/Opt. Elec. Heat...................... 5 Table 1 Diagram to Use w/Unit & Vents................. 3 Figure 2 HP w/Opt. MFAD, CRV & ERV Vent. Pkg. .
TABLE 1 DIAGRAM TO USE WITH UNIT AND VENTS System Vent None CRV, ERV, MFAD CRVMWH-3 CHCRV-5 EIFM Economizer ECONWM* Vent Code X R, M, V, P C E T, W, S Thermostat Programmable Programmable Programmable Programmable Programmable CS2000A* All Model Series No Yes No Yes No Yes No Yes No Yes Heat Pump S**H T**H W**H 1 1 3&4 2 15 14 N/A 5 N/A 13 11 Heat Pump with Dehumidification S**H*D T**H*D W**H*D 7 6 9 & 10 8 N/A 14 N/A 12 N/A 13 N/A WIRING – LOW VOLTA
TABLE 4 HUMIDITY CONTROLS Part Number 8403-038 (H600A1014) 8403-047 (H200-10-21-10) Predominate Features SPDT switching, pilot duty 50VA @ 24V Humidity range 20-80% RH Electronic dehumidistat SPST closes-on-rise Humidity range 10-90% with adjustable stops TABLE 5 CO2 CONTROLLER Part Number Predominate Features 8403-067 Normally Open SPST relay closes-on-rise 24V dual wave length sensor.
FIGURE 1 BASIC HEAT PUMP WITH OPTIONAL ELECTRIC HEAT NO ECONOMIZER or VENTILATION PACKAGES Low Voltage Wiring Diagram Thermostat #TH5220D1151 Bard part #8403-058 C G R Rc Y O/B Aux L 1 Stage Cool 2 Stage Heat E 1 Thermostat Bard part #8403-060 C G R 24V Low Voltage Terminal Block C G R "L" is constant 24V output when thermostat is in Em Heat mode Y1 O/B Y1 Y B W2 Y O/D W1/E W1 W2 W3 1 E L Y2 A L DH O1 Electronic Programmable Unit 1 Factory Jumper Installed MIS-2645 C Ma
FIGURE 2 HEAT PUMP WITH OPTIONAL MFAD, CRV & ERV VENTILATION PACKAGING WITH PROGRAMMABLE THERMOSTAT (RECOMMENDED) Figure 2 4 Heat Pump with Optional MFAD, CRV, and ERV Ventilation Packaging with Programmable Thermostat (Recommended) Low Voltage Wiring Diagram Thermostat Bard part #8403-060 C G R Y1 Y2 W1/E W2 O/B L Y O/D 1 2 3 4 5 A Electronic Programmable Optional CO2 Controller Bard part #8403-067 6 2 24V Low Voltage Terminal Block C G 3 Black R Y Orange Y1 E B CRV ERV L O
FIGURE 3 HEAT PUMP WITH OPTIONAL MFAD, CRV and ERV VENTILATION PACKAGING WITH NON-PROGRAMMABLE THERMOSTAT (NO OCCUPIED SIGNAL) Low Voltage Wiring Diagram Thermostat #TH5220D1151 Bard part #8403-058 C G R Rc E Y AUX O/B 1 Stage Cool 2 Stage Heat L 1 24V Low Voltage Terminal Block C G R "L" is constant 24V output when thermostat is in Em Heat mode Y Y1 E W2 B W1 W3 1 3 Black Black MIS-2646 C Orange Red CRV ERV MFAD Ventilation Packages L DH O1 Unit 2 Brown/White Red 1 Facto
FIGURE 4 HEAT PUMP WITH OPTIONAL MFAD, CRV and ERV VENTILATION PACKAGING WITH NON-PROGRAMMABLE THERMOSTAT WITH CO2 CONTROLLER "L" is constant 24V output when thermostat is in Em Heat mode Low Voltage Wiring Diagram Thermostat #TH5220D1151 Bard part #8403-058 C G R Rc Y E AUX L O/B 1 Stage Cool 2 Stage Heat 1 2 1 24V Low Voltage Terminal Block C G 2 Black R Y1 Orange Y W2 1 Factory Jumper Installed Connect orange wire to "G" 2 only if optional CO2 controller is used.
FIGURE 5 HEAT PUMP WITH OPTIONAL EIFM ECONOMIZER “E” VENT OPTION Figure 5 Heat Pump with Optional Economizer Low Voltage Wiring Diagram Thermostat Bard part #8403-060 C R O/B 24V Low Voltage Terminal Block C R B W1 W1/E W2 L G E W2 L G A Y Y1 YO/D Y1 DH O1 W3 1 Pink Yellow F Orange E Black 1 Blue Black Y2 Y1 2 Stage Cool 2 Stage Heat Unit Purple 2 3 MIS-2648 C Economizer Wiring Harness 1 Factory Jumper Installed.
FIGURE 6 HEAT PUMP WITH DEHUMIDIFICATION SEQUENCE AND NO VENTILATION PACKAGE USING THERMOSTAT #8403-060 COMBINATION TEMPERATURE & HUMIDITY CONTROLLER Figure 6 Heat Pump with Dehumidification Sequence and No Ventilation Package using Thermostat part #8403-060 Combination Temperature and Humidity Controller.
FIGURE 7 HEAT PUMP WITH DEHUMIDIFICATION SEQUENCE WITH NON-PROGRAMMABLE THERMOSTAT Low Voltage Wiring Diagram Thermostat #TH5220D1151 Bard part #8403-058 C G R Rc E Y AUX O/B L 1 24V Low Voltage Terminal Block C G R 1 Stage Cool 2 Stage Heat "L" is constant 24V output when thermostat is in Em Heat mode Y Y1 E W2 B W1 W3 L DH O1 Unit 1 2 Electronic Humidistat Bard part #8403-047 Mechanical Humidistat Bard part #8403-038 6 5 3 Red 4 1 Factory Jumper Installed.
FIGURE 8 HEAT PUMP WITH DEHUMIDIFICATION SEQUENCE & OPTIONAL MFAD, CRV & ERV VENTILATION PACKAGING USING ELECTRONIC THERMOSTAT WITH COMBINATION TEMPERATURE & HUMIDITY CONTROL WITH OPTIONAL CO2 CONTROLLER Figure 8 Heat Pump with Dehumidification Sequence and Optional MFAD, CRV, and ERV Ventilation Packaging using Electronic Thermostat with Combination Temperature and Humidity Control with Optional CO 2 Controller 2 Thermostat Bard part #8403-060 Low Voltage Wiring Diagram C G R Y1 Y2 O/B W2 YO/D A W
FIGURE 9 HEAT PUMP WITH DEHUMIDIFICATION SEQUENCE & OPTIONAL MFAD, CRV & ERV VENTILATION PACKAGING USING A NON-PROGRAMMABLE THERMOSTAT (NO OCCUPIED SIGNAL) Low Voltage Wiring Diagram Thermostat Bard part #8403-058 C G R Rc E Y AUX L O/B 1 24V Low Voltage Terminal Block C G R Y1 1 Stage Cool 2 Stage Heat "L" is constant 24V output when thermostat is in Em Heat mode Y E W2 B W1 W3 DH O1 L Unit 1 Red Orange CRV ERV Black 2 Brown/White Ventilation Packages MFAD RED 4 Black 1 Factor
FIGURE 10 HEAT PUMP WITH DEHUMIDIFICATION SEQUENCE & OPTIONAL MFAD, CRV & ERV VENTILATION PACKAGING USING A NON-PROGRAMMABLE THERMOSTAT WITH CO2 CONTROLLER "L" is constant 24V output when thermostat is in Em Heat mode Low Voltage Wiring Diagram C G R Rc Thermostat #TH5220D1151 Bard part #8403-058 Y AUX E O/B 1 Stage Cool 2 Stage Heat L 1 1 2 3 4 5 6 Optional CO2 Controller Bard part #8403-067 24V Low Voltage Terminal Block C G R Y1 Y W2 B W1 W3 DH O1 E L 1 Red Orange CRV ERV
FIGURE 11 HEAT PUMP WITH CS2000A2 Figure 11 HP WITH CS2000 WH/SH HEAT PUMP CONNECTION DIAGRAM DO NOT CONNECT "L" UNTIL AFTER 8403-060 CONTROLLER IS CONFIGURED TO CS2000 = YES TEMPERATURE/HUMIDITY CONTROLLER BARD P/N 8403-060 YELLOW G C R O/B Y1 W2 L W1/E 1 THERMOSTAT TH5220D1151 BARD P/N 8403-058 IF OPTIONAL VENT PACKAGE IS INSTALLED, THE "G" WIRE MUST BE CONNECTED TO ASSURE CONTINUOUS BLOWER DURING OCCUPIED PERIODS WHEN VENT SYSTEM IS "ON".
FIGURE 12 W**H1 DEHUM. WITH ECONOMIZER & #8403-060 THERMOSTAT (EIFM) “E” VENT OPTION W**H1 Dehum. with Econ. and #8403-060 Thermostat Green Red White Brown C G R E W2 Orange L O/B YOD L W1 O/B Y2 Y1 Light Blue W2 Y Y1 W3 Light Blue W1E Blue R Orange G Black WH Unit Low Voltage Term. Strip C Black Thermostat Part #8403-060* Yellow Y2 Blue ! DANGER *ELECTRICAL SHOCK HAZARD *DISCONNECT POWER BEFORE SERVICING.
FIGURE 13 1-STAGE HEAT PUMP WITH OPTIONAL ELECTRIC HEAT WITH OR WITHOUT DEHUMIDIFICATION WITH ECONWM STYLE ECONOMIZER “W” OR “T” VENT OPTION C R B Black Red W1 W2 L G E W2 L G A Y Brown/white 3 Economizer Wiring Harness YO/D Y2 Y1 Purple 24V Low Voltage Terminal Block W1/E Y1 DH O1 W3 Yellow/red O/B Yellow R 1 Orange C Blue Thermostat part #8403-060 Pink Low Voltage Wiring Diagram 2 Yellow/White 1 Must be energized to enable minimum position.
FIGURE 14 HEAT PUMP WITH OPTIONAL CRVMWH-3 OR CHCRV-5 VENTILATION PACKAGING WITH PROGRAMMABLE THERMOSTAT (RECOMMENDED) Low Voltage Wiring Diagram 4 Thermostat Bard part #8403-060 C G R Y1 Y2 W1/E W2 O/B L Y O/D A Electronic Programmable 3 1 2 3 4 5 Optional CO2 Controller Bard part #8403-067 6 2 24V Low Voltage Terminal Block C G Black 1 Factory Jumper Installed R Y E Y1 Yellow Red B W1 W3 DH 3 Wire only needed for dehumidification units Must be configured to programmable and f
FIGURE 15 HEAT PUMP WITH OPTIONAL CRVMWH-3 OR CHCRV-5 VENTILATION PACKAGING WITH NON-PROGRAMMABLE THERMOSTAT (NO OCCUPIED SIGNAL) Low Voltage Wiring Diagram Thermostat #TH5220D1151 Bard part #8403-058 C G R Rc Y E AUX O/B E W2 B 1 Stage Cool 2 Stage Heat L 1 24V Low Voltage Terminal Block C G R Y Y1 Yellow W1 W3 1 L DH O1 Unit 2 Red Black MIS-2998 A CHCRV-5 OR CRVMWH-3 Orange Ventilation Package 1 Factory Jumper Installed 2 Add jumper, ventilation will be active whenever b