In making gas connections, avoid strains as they may cause noise and damage the con- trols. A backup wrench is required to be used on the valve to avoid damage.

The capacities of gas pipe of different diameters and lengths in cu. ft. per hr. with pres- sure drop of 0.3 in. and specific gravity of 0.60 (natural gas) are shown in Table 1.

After determining the pipe length, select the pipe size which will provide the minimum cubic feet per hour required for the gas input rating of the furnace. By formula:

Cu. Ft. Per Hr. Required =

Gas Input of Furnace (BTU/HR)

Heating Value of Gas (BTU/FT3)

The gas input of the furnace is marked on the furnace rating plate. The heating value of the gas (BTU/FT3) may be determined by consulting the local natural gas utility or the L.P. gas supplier.

B. LP CONVERSION

!WARNING

FACTORY FOR USE ON NATURAL GAS ONLY. CONVERSION TO LP GAS REQUIRES A SPECIAL KIT SUPPLIED BY THE DISTRIBUTOR OR MANUFAC- TURER. MAILING ADDRESSES ARE LISTED ON THE FURNACE RATING PLATE, PARTS LIST AND WARRANTY. FAILURE TO USE THE PROPER CONVERSION KIT CAN CAUSE FIRE, CARBON MONOXIDE POISONING, EXPLOSION, PER- SONAL INJURY, PROPERTY DAMAGE OR DEATH.

Convert the valve to use liquefied petroleum (LP) gas by replacing the pressure regulator spring with the conversion kit spring. This LP kit spring allows the regulator to maintain the proper manifold pressure for LP gas. The correct burner LP orifices are included in the kit. See Figure 14.

IMPORTANT: To remove the gas valve, remove the four screws securing the manifold pipe to the burner tray. Remove the manifold pipe with gas valve attached. See Figure 15.

NOTE: Order the correct LP conversion kit from the furnace manufacturer. See Conversion

Kit Index shipped with unit for proper LP kit number. Furnace conversion to LP gas must be performed by a qualified technician.

C. NOx MODELS

When converting units equipped with NOx inserts to LP gas, the stainless steel screen mesh inserts in the entrance of the tubular exchangers are not required to meet SCAQMD NOx emission levels. These inserts and 1/8″ diameter retaining rod should be carefully removed before firing this furnace on LP gas. IMPORTANT: This furnace is not designed to operate on LP gas with the NOx inserts in place.

Step by step instructions on removing the NOx inserts and retaining rod are included in the Conversion Kit Installation Instructions.

TABLE 2

LP GAS PIPE CAPACITY TABLE (CU. FT./HR.)

Maximum capacity of pipe in thousands of BTU per hour of undiluted liquefied petroleum gases (at 11 inches water column inlet pressure).

(Based on a Pressure Drop of 0.5 Inch Water Column)

Nominal

 

 

 

 

Length of Pipe, Feet

 

 

 

 

Iron Pipe

 

 

 

 

 

 

 

 

 

 

 

 

10

20

30

40

50

60

70

80

90

100

125

150

Size, Inches

1/2

275

189

152

129

114

103

96

89

83

78

69

63

3/4

567

393

315

267

237

217

196

182

173

162

146

132

1

1,071

732

590

504

448

409

378

346

322

307

275

252

1-1/4

2,205

1,496

1,212

1,039

913

834

771

724

677

630

567

511

1-1/2

3,307

2,299

1,858

1,559

1,417

1,275

1,181

1,086

1,023

976

866

787

2

6,221

4,331

3,465

2,992

2,646

2,394

2,205

2,047

1,921

1,811

1,606

1,496

Example (LP): Input BTU requirement of unit, 150,000

Equivalent length of pipe, 60 ft. = 3/4″ IPS required.

14

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Heat Controller A-13 installation instructions LP Conversion, NOx Models
Page 13 Page 15

A-13 specifications

The Heat Controller A-13 is an innovative and efficient heating solution designed to provide optimal comfort while reducing energy consumption. This advanced unit stands out in the market due to its combination of cutting-edge technologies and user-centric features, making it an ideal choice for both residential and commercial applications.

One of the main features of the A-13 is its high energy efficiency rating. With a SEER (Seasonal Energy Efficiency Ratio) rating of up to 23, the unit not only lowers energy bills but also minimizes the carbon footprint, making it an environmentally friendly option. This efficiency is further enhanced by the use of variable speed inverter technology, which allows the unit to modulate its output based on the specific heating demand. This ensures a more consistent and comfortable indoor environment while avoiding the energy wastage associated with traditional fixed-speed systems.

The A-13 incorporates state-of-the-art smart technology, enabling users to control their heating system remotely. Through a dedicated mobile application, homeowners can adjust settings, monitor energy consumption, and receive maintenance alerts directly from their smartphones. This level of control offers convenience and ensures that the space is always comfortable upon arrival.

In addition to smart capabilities, the A-13 is designed with ultra-quiet operation in mind. Thanks to its advanced compressor and fan technology, the unit operates at sound levels as low as 26 decibels, ensuring a peaceful atmosphere even when the heating system is in operation. This is particularly beneficial for environments where noise can be a distraction, such as bedrooms or offices.

The heat exchanger technology used in the A-13 further contributes to its high performance. The unit features a corrosion-resistant, gold-fin coating that enhances durability and heat transfer efficiency. This not only extends the lifespan of the unit but also helps maintain optimal performance over time.

Safety features are also a priority in the A-13 design. The unit includes multiple safety mechanisms, such as overheating protection and automatic shut-off functions, ensuring safe operation even during extended use.

Overall, the Heat Controller A-13 represents a blend of efficiency, performance, and user-friendly technology, making it a top choice for those seeking reliable and sustainable heating solutions in their spaces. With its combination of smart controls, quiet operation, and robust safety features, the A-13 is indeed a leader in modern heating solutions.
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