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Summary of Contents for heatco EF Series
- Page 1 INSTALLATION, OPERATION & MAINTENANCE MANUAL EF SERIES DUCT FURNACE ANSI Z83.8 (2016) – CSA 2.6(2016) – GAS-FIRED DUCT FURNACES This manual must be kept with the appliance for future reference. EF-IOM-MAN-E-2016-2...
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Page 2: Table Of Contents
The information provided in this manual applies only to the duct furnace, its installation in duct work or air handler cabinet and to its operation, maintenance, and service. Refer to the air handling unit manufacturer’s instructions for information related to all other components. Table of Contents Inspection on Arrival Safety Rules... -
Page 3: Inspection On Arrival
I. Inspection on Arrival Inspect unit on arrival. Report any damage to the transportation company and unit manufacturer. Inspect skids and cartons for signs of poor handling that may have caused damage. If unit is stored prior to installation, make sure unit is protected from rain and snow and stored in a low traffic area. -
Page 4: Installation Requirements
III. Installation Requirements All unit installations must be in accordance with the National Fuel Gas Code ANSI Z223.1 (NFPA 54) in the United States and Can/CGA-B149 Installation Code in Canada, and all other applicable local codes and ordinances. These requirements include but are not limited to: ... -
Page 5: Duct Furnace Installation
Duct Furnace Installation For a duct furnace connected to a return air duct or mounted in a cabinet, furnace shall be installed on the positive pressure side of the circulating air fan. Furnace can be configured for horizontal airflow only, as shown in Fig. 1 Figure 1 –... -
Page 6: Combustion Air Supply
Combustion Air Supply The duct furnace needs an ample supply of air for proper and safe combustion of the fuel gas. Do not block or obstruct air openings to the area where the heating unit is installed. Locate unit to insure an adequate supply of fresh air to replace air used in the combustion and ventilation process. - Page 7 For outdoor installations run condensate drain from duct furnace into building (See Figure 2) Figure 2 – Condensate Drain Piping The drains must be extended through the heater base and into the heated space below to prevent freezing of Outlet Flue Drain Vent condensate in the drain...
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Page 8: Venting
IV. Venting Installation of venting system must conform to local building codes and / or the National Fuel Gas Code (ANSI Z223.1) or in Canada the Canadian Installation Code (CAN/CGA-B149). Outdoor Installation Flue gases (products of combustion) must be vented outside of the appliance. The vent discharge must be at least the same diameter as the vent connector provided on the heating unit. -
Page 9: Indoor Installation
Indoor Installations All duct furnaces must be connected to a venting system to convey flue gases outside of the heated space. Duct furnaces for indoor installation are listed as Category II or IV vented appliances. Vent pipe used must be certified to UL1738 / ULC S636 for a Category II, III and IV appliances. Joints must be gas tight and watertight. -
Page 10: Separated Combustion
Figure 5 – Horizontal Vent (Category IV) Table 1 – Vent Connector Size Flue Max. Vent Exhaust Dia. Model Size Input (Btuh) Length (inch) (ft.) EF0250 275,000 EF0400 450,000 EF0550 600,000 EF0750 835,000 EF0900 1,000,000 EF1000 1,120,00 EF1250 1,400,000 EF1500 1,650,000 EF1750 1,950,000... - Page 11 Figure 6 – Vent and Air Pipe Connections Vent pipe and air inlet pipe are sized based on input rating of the furnace. See Table 2 for connector sizing and materials based on model number and size. Minimum vent length is 5 ft. Table 2 –...
- Page 12 Indoor Vertical Venting Vertical vent systems terminate vertically up. Install a Tee fitting with condensate drain connection as shown in Figure 7. Vent and combustion air piping must be terminated as shown in Figure 8. Figure 7 – Vertical Vent Pipe Connections Figure 8 –...
- Page 13 Figure 10 – Horizontal Terminations Vent Pipe 12" (0.3m) Minimum Vent Pipe 12" (0.3m) Minimum from adjacent wall 90o (or) 45o Elbow Combustion Air 12" (0.3m) Minimum Inlet Pipe 24" (0.6m) Combustion Air Minimum 18" (.045m) Min. Inlet Pipe Above Grade or Snow Line 6 ft.
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Page 14: Gas Supply Piping
V. Gas Supply, Piping and Connections 1. Installation of piping must conform with local building codes and ordinances, or in the absence of local codes with ANSI Z223.1 the National Fuel Gas Code. In Canada, installation must be in accordance with CAN/CGA – B149.1 for Natural gas and B149.2 for propane units. - Page 15 Figure 13- Typical Gas Piping WARNING ! WARNING ! 1. All field gas piping must be 1. When pressure testing at ½ PSI or pressure / leak tested prior to less, close the manual shut-off valve operation. NEVER use an open on the appliance before testing.
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Page 16: Electrical Requirements
VI. Electrical Requirements All electrical equipment must be grounded and wired in accordance with the National Electric Code (ANSI/NFPA 70) in the United States, and the Canadian Electric Code (CSA C22.1), in Canada. The installer / equipment manufacturer is responsible for final compliance with these requirements. The furnace control system requires both line voltage and low voltage circuits with correct polarity, and clean neutral and ground. -
Page 17: Wiring Diagrams
Wiring Diagram – Siemens LME7 Controller Electrical Ratings Supply Burner Furnace Burner Model Model Voltage Amps (Max) Number Number (VAC) EF0250 EF0400 EF0550 EF0750 EF0900 EF1000 12.0 EF1250 12.0 EF1500 12.0 EF1750 12.5 EF2000 12.5... -
Page 18: Installer Safety
Installer Safety Instructions 1. BEFORE OPERATING, Check both the supply lines and factory piping for leaks. Apply a soap and water solution to all joints and watch for bubbles indicating a leak. NEVER test for gas leaks with an open flame. 2. -
Page 19: Shutdown
9. Use a manometer to check the pilot pressure at the tap provided. a) Pilot gas pressure should be 3.2” to 3.5” W.C 10. Open the Manifold gas shut-off valve. With an analog input of 2.0 VDC burner will run at low fire. 11. -
Page 20: Normal Operation
11. Verify proper system operation. See “Normal Operation” on Pg. 20 CAUTION ! If any of the original wiring needs to be replaced it must be replaced with wiring materials suitable for Heatco Inc. 50 Heatco Court Cartersville, Ga. 30120...
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