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22
Figure 33
Rollout Switch Relocation (Upflow)
Figure 34
Rollout Switch Relocation
(Counterflow)
ROLLOUT PROTECTION DEVICE
If the flames from the burners are not properly drawn into
the heat exchanger, a protection device will open causing
the gas valve to close. In GUI(-) furnaces installed horizon-
tal right-to-left airflow, the device must be relocated.
Supply
Air
Return
Air
Figure 31
Right To Left Installation
Supply
Air
Return
Air
Figure 32
Left To Right Installation
If relocation is required, proceed as follows:
1. Disconnect electrical power.
WARNING
To prevent death or personal injury due to
electric shock, disconnect electrical power.
2. See Figures 33 and 34. Remove the cover from the
burner box. Save the screws that held it in place. (Note:
There are several screw holes, but only four screws.
This is intentional, and not a manufacturing defect.)
3. As shipped, the rollout protection device is located near
the flame sensor end of the manifold assembly. Re-
move and save the mounting screws.
4. For most installations, it will not be necessary to remove
the wires from the rollout protection device.
5. For horizontal-left installations, a hole is provided near
the ignitor end of the manifold assembly. Insert the
rollout protection device into this hole and attach with
screws removed in step 3.
6. Secure rollout wires to manifold and insure no wires can
come in contact with burners or other hot surfaces.
7. Push the button to confirm the rollout control is in the
closed position.
8. Replace the cover on the burner box, placing the
screws from step 2 in their original locations.
WARNING
To prevent death, personal injury or property
damage due to fire or explosion, a qualified
servicer must determine the reason the
rollout protection device opened before the
device is reset.