Roll-Out Protection Device; Auxiliary Limit Control (Gdc Only) - Amana GUC Series User's Informational Manual

10. Open the manual gas valve external to the furnace.
11. Turn on the electrical power supply to the furnace.
12. Set thermostat to desired setting.
White Rodgers
Models 36E36 or 36E37
Honeywell
Model VR-8205
Redundant
Solenoid
INLET
ON/Off
Switch
Inlet Pressure Tap
Main Regulator
(Side of Valve)
White Rodgers
Model 36E22 or 36E23

Roll-Out Protection Device

If flames from the burners are not properly drawn into the
heat exchanger, a flame roll-out limit switch will open caus-
ing combustion to cease. This limit switch must be reset
manually. The roll-out limit switch is located on one end of
the manifold assembly for GUC, GUX and GDC furnaces
(Figure 7 and 8) and in the burner box on GUD furnaces
(Figure 10). GDC furnaces installed horizontally will have
the roll-out limit switch located at the top end of the mani-
fold assembly. (Figure 9)
Figure 4
Figure 5
Main
WR
M 1 Solenoid
P 3
O
F
F
OUTLET
C 2
ON
Outlet Pressure Tap
(Side of Valve)
Adjust
Figure 6

Auxiliary Limit Control (GDC Only)

A second limit control is located on one side of the indoor air
blower. (Figure 11) Disconnect electrical power prior to re-
moving the non-louvered door to reach the secondary limit
control. The control is in addition to the main control and
shuts the furnace off in case of a blower failure. This control
is a manual reset control, which can be reset only once. If
the unit goes off on limit a second time, contact a qualified
servicer so the problem causing the control to open can be
corrected.
Roll-Out Protection Device
(GUC and GUX)
Roll-Out Protection Device - Counterflow
Position (GDC)
7
Flame Roll-Out
Protection
Device
Figure 7
Flame Roll-Out
Protection
Device
Figure 8