Magic-Pak HWC8-12 Installation Instructions Manual Download Page 12

Page 12 of 18

507388-01

Issue 1504

Burner & manifold assembly

To remove the burner & manifold assembly:

1. 

Disconnect electrical service and turn off gas to the appliance.

2.  Loosen the pipe union external to the unit and remove the 

gas line to the gas valve.

3.  Disconnect the orange high voltage spark wire at the ignition 

control board.

4.  Disconnect the white flame sensor wire at the flame sensor 

on top of the burner assembly.

5.  Disconnect the orange wires at the rollout switch.

6.  Disconnect the red and blue wires at the gas valve.

7. 

Refer to Figure 6. Remove the two screws on the burner 

assembly that secure it to the mounting brackets. The 

mounting brackets contain pins to locate the assembly and 

hold it in place after the screws are removed. The mounting 

brackets are hidden until the burner assembly is removed.

8. 

First, carefully pull the burner assembly toward you until it 

is clear of the locating pins in the mounting brackets. 

9. 

Then move the assembly away from the vest panel.

10.  Finally, pull the assembly from the unit.

11. 

Once the burner assembly is removed, the burners can be 

cleaned using a bottle brush.

12. 

For reassembly, follow the above steps in reverse order.

Control board mounting bracket

Summary of Contents for HWC8-12

Page 1: ...not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance Such actions could result in property damage personal injury or death WARNING Installati...

Page 2: ...ion of the unit with clogged or misplaced filters will damage the unit Units may be used for heating of buildings or structures under construction if the following conditions are met The Unit must be...

Page 3: ...d upon construction completion The input rate and temperature rise must be set per the furnace rating plate One hundred percent 100 outdoor air must be provided for combustion air requirements during...

Page 4: ...ing compound The seal must be weathertight to prevent entrance of moisture and water into the building Assure that the unit is completely seated against the gaskets on the wall sleeve Installing Witho...

Page 5: ...ustion inducer The inducer draws the combustion products out of the heat exchanger together with dilution air and forces the mixture from the unit to the outside No special provisions are required for...

Page 6: ...manual shutoff valve during any pressure testing of gas supply piping system at test pressures equal to or less than 1 2 psig or 14 W C If the piping system is to be tested at pressures in excess of 1...

Page 7: ...all sides of the duct are flanged over to permit removal of the cooling chassis if required Use a flexible connection to attach the remainder of the return duct The return duct should be sealed to th...

Page 8: ...55 770 58 735 61 700 64 208 860 52 815 55 770 58 735 61 230 880 51 835 54 790 57 750 60 TAP 1 HEAT 208 or 230 735 49 700 51 670 53 640 56 TAP 2 HEAT 208 or 230 825 43 795 45 770 46 745 48 TAP 3 HEAT 2...

Page 9: ...me additional installation and operating precautions should be taken The following precautions are taken to prevent possible vent system ice blockage that could result in safety shutdown of the burner...

Page 10: ...after the thermostat is satisfied The time delay is preset at the factory and timing can not be adjusted Cooling Sequence of operation When the thermostat system switch is set for COOL the blower wil...

Page 11: ...osen these screws to remove control board mounting bracket Ignition Control board Remove these screws to remove Burner Assembly Igniter Combustion Inducer Gas Valve Primary Limit Mounted to Vest panel...

Page 12: ...wires at the gas valve 7 Refer to Figure 6 Remove the two screws on the burner assembly that secure it to the mounting brackets The mounting brackets contain pins to locate the assembly and hold it in...

Page 13: ...Page 13 of 18 507388 01 Issue 1504 BURNER MANIFOLD ASSEMBLY REMOVAL Step 7 Mounting Brackets Step 8 Step 9 Step 10 Burner Manifold Assembly Figure 6...

Page 14: ...nd slip the rollout switch from beneath the lanced tab on the burner assembly 4 For reassembly follow the above steps in reverse order Flame sensor 1 Remove the control board mounting bracket as descr...

Page 15: ...frigeration system contained in the cooling chassis normally requires no maintenance since it is a closed self contained system System is charged with R410A refrigerant Periodic maintenance is limited...

Page 16: ...Page 16 of 18 507388 01 Issue 1504 Figure 7...

Page 17: ...Page 17 of 18 507388 01 Issue 1504 Figure 8...

Page 18: ...Page 18 of 18 507388 01 Issue 1504 NOTES...

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