TABLE 4

WALL THERMOSTAT AND SUBBASE COMBINATIONS

Thermostat

Subbase

Predominant Features

 

 

 

8403-045

- - -

1 stg. cool; 2 stg. heat; Mercury bulb

(T841A1761)

Manual changeover

 

8403-017

8404-009

2 stg. cool; 2 stg. heat; Mercury bulb

(T874R1129)

(Q674L1181)

Manual changeover

8403-018

8404-010

2 stg. cool; 2 stg. heat; Mercury bulb

(T874N1024)

(Q674F1261)

Auto or Manual changeover

8403-042

 

1 stg. cool; 2 stg. heat

- - -

Electronic Non-Programmable

(T8511G1070)

 

Auto or Manual changeover

 

 

 

 

 

8403-049

 

2 stg. cool; 2 stg. heat

- - -

Programmable Electronic

(1F93-380)

 

Auto or Manual changeover

 

 

(1)No automatic changeover position -- must be manually placed in heat or cool. Reversing valve remains energized at all times system switch is in heat position (except during defrost cycle). No pressure equalization noise when thermostat is satisfied on either heating or cooling.

(2)Allows thermostat to control both heating and cooling operation when set in "Auto" position. Reversing valve de-energizes at end of each "On" heating cycle.

IMPORTANT NOTE:

Both thermostat and subbase combinations shown above in Groups A and B incorporate the following features: Man-Auto fan switch, Off-Heat-Cool-Em. Heat switch, and two (2) indicator lamps – one for emergency heat and one for compressor malfunction.

THERMOSTAT INDICATOR LAMPS

The red lamp marked "Em. Ht." comes on and stays on whenever the system switch is placed in the emergency heat position. The green lamp marked "Check" will come on if there is any problem that prevents the compressor from running when it is supposed to be.

EMERGENCY HEAT POSITION

The operator of the equipment must manually place the system switch in this position. This is done when there is a know problem with the unit, or when the green "Check" lamp comes on indicating a problem.

COMPRESSOR MALFUNCTION LIGHT

Actuation of the green "Check" lamp is accomplished by a relay output from the heat pump control board which is factory installed. Any condition such as loss of charge, high head pressure, etc., that will prevent compressor for operating will cause green lamp to activate. This is a signal to the operator of the equipment to place system in emergency heat position.

Manual 2100-399 Page 13

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Bard WH602, WH483, WH421 Thermostat Indicator Lamps, Emergency Heat Position, Compressor Malfunction Light
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WH421, WH483, WH602 specifications

Bard WH602, WH421, and WH482 are distinguished models in Bard's line of high-performance wall-mounted heaters. Each unit is designed to offer reliable heating solutions for various commercial and industrial applications. These models are renowned for their energy efficiency, robust construction, and ease of use, making them ideal for a variety of environments, including warehouses, manufacturing facilities, and other large spaces.

The WH602 model boasts impressive heating capabilities, featuring a powerful fan-forced heater equipped with a 60000 BTU rating. This allows it to effectively heat large areas quickly and efficiently. One of its main features is the high-efficiency, stainless steel heat exchanger that promotes better heat transfer, enhancing the overall performance and longevity of the heater. The WH602 is designed with energy-saving technology, allowing it to operate with minimal electricity consumption while maximizing output.

The WH421 model offers a more compact solution without sacrificing power. With a heating capacity of 42000 BTU, it is suitable for medium-sized spaces. Like the WH602, the WH421 utilizes a stainless steel heat exchanger, ensuring durability and efficient heating. This model is equipped with a quiet, high-performance fan that distributes heat uniformly throughout the space, maintaining comfortable conditions without the distraction of excessive noise. Its compact design also allows for easy installation in tighter spaces.

The WH482 is a versatile model that falls between the two in terms of performance and application. Rated at 48000 BTU, it combines the benefits of both the WH602 and WH421, making it suitable for various heating demands. The WH482 features advanced control options, allowing users to set specific heating schedules and temperatures for improved comfort and energy efficiency. Additionally, it has built-in safety features like over-temperature protection and a thermal cutoff switch, ensuring safe operation in commercial environments.

All three models share key characteristics, including a robust construction built to withstand harsh conditions, user-friendly controls, and compliance with industry safety standards. Their wall-mounted design saves valuable floor space while providing powerful heating performance. Overall, Bard WH602, WH421, and WH482 represent a commitment to quality, performance, and customer satisfaction, making them top choices for businesses seeking efficient heating solutions.
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