WIRING — LOW VOLTAGE WIRING

230/208V, 1 phase and 3 phase equipment dual primary voltage transformers. All equipment leaves the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. The acceptable operating voltage range for the 240 and 208V taps are shown in Table 4 below.

TABLE 4

OPERATING VOLTAGE RANGE

TAP

RANGE

 

 

 

 

240V

253

-

216

 

 

 

 

208V

220

-

187

 

 

 

 

NOTE: The voltage should be measured at the field power connection point in the unit and while the unit is operating at full load (maximum amperage operating condition).

Five (5) wires should be run from thermostat subbase to the 24V terminal board in the unit. A five conductor, 18 gauge copper, color-coded thermostat cable is recommended. The connection points are shown in Figure 8.

TABLE 5

THERMOSTAT WIRE SIZE

 

 

 

Maximum

Transformer

 

 

Distance

VA

FLA

Wire Gauge

In Feet

 

 

20 gauge

45

 

 

18 gauge

60

55

2.3

16 gauge

100

 

 

14 gauge

160

 

 

12 gauge

250

TABLE 6

WALL THERMOSTAT AND SUBBASE COMBINATIONS

Thermostat

Subbase

Predominate Features

 

 

 

8403-002

8404-003

1 stage heat, 1 stage cool

T87F3111

Q539A1220

System: heat-off-cool Fan: auto-on

8403-041

---

1 stage heat, 1 stage cool

T8034C

 

System: heat-off-cool Fan: auto-on

8403-019

8404-012

1 stage cool, 2 stage heat

T874C1760

Q674A1001

System: heat-auto-cool Fan: auto-on

8403-021

8404-012

2 stage cool, 2 stage heat

T874D1934

Q674A1001

System: heat-auto-cool Fan: auto-on

8403-049

---

2 stage cool, 2 stage heat

1F93-380

 

Electronic 7 day programming

8403-043

---

1 stage heat, 1 stage cool

CM-200

System: heat-off-cool Fan: auto-on

 

Manual 2100-425 Page 9

Page 11
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Bard WA721, WA702-A, WA611, WA701-C, WA701-B Wiring LOW Voltage Wiring, Operating Voltage Range, Thermostat Wire Size

WA701-C, WA701-B, WA611, WA721, WA702-A specifications

The Bard WA702-A, WA721, WA611, WA701-B, and WA701-C are part of Bard's renowned series of wall-mounted HVAC units designed for superior heating and cooling performance in various applications, particularly in the commercial and residential sectors. Each model boasts distinctive features and technologies that cater to specific comfort needs and energy efficiency requirements.

The Bard WA702-A model is noted for its energy-efficient engineering. It utilizes advanced scroll compressor technology, ensuring quiet operation and improved reliability. The unit’s high seasonal energy efficiency ratio (SEER) allows it to operate effectively in a variety of climate conditions, providing economic savings on energy bills.

The WA721 model takes efficiency a step further by incorporating Bard’s innovative electric heat option, which delivers rapid heating capabilities. This model is suitable for colder climates where quick temperature adjustments are essential. Its compact design allows for easy installation without compromising space, making it ideal for both residential and light commercial settings.

The WA611 is engineered with versatility in mind. This model supports multi-zone heating and cooling, allowing users to adjust temperatures in different areas independently. Its advanced controls facilitate optimal comfort while minimizing energy consumption. The WA611 also features an integrated air filtration system to enhance indoor air quality, which is a significant consideration in modern HVAC systems.

For those seeking dual functionality, the WA701-B and WA701-C models stand out with their remarkable heating and cooling capabilities. Both units are equipped with Bard’s patented thermal expansion valve (TXV) that optimizes refrigerant flow for improved efficiency across varying loads. The WA701 series includes robust insulation to reduce noise levels and enhance performance during operation.

In addition to their energy-efficient and space-saving designs, all models feature easy-to-use digital controls, enabling users to adjust settings conveniently. Moreover, the units are constructed with durable materials, providing long-lasting performance even in demanding environments.

Overall, the Bard WA series represents a blend of innovative technology, efficiency, and user-friendly designs that address the ever-changing needs of heating and cooling in contemporary spaces. Whether it’s for residential purposes or commercial applications, these models stand out for their promising performance and reliability, ensuring comfort and satisfaction for users.