Unit installation

4
Component Identification
1 Gas Valve
2 Gas Line Entrance (Alternate)
3 Pressure Switch
4 Gas Manifold
5 Combustion Air Intake Connection
6 Hot Surface Igniter
7 Rollout Limit
8 Burners
9 Flame Sensor
10 Flue Pipe Connection
11 Flue Pipe
12 Combustion Air Intake (Alternate)
13 Primary Limit
14 Gas Line Entrance
15 Flue Pipe Connection (Alternate)
16 Rubber Elbow
17 Induced Draft Blower
18 Coil Front Cover Pressure Tap
19 Coil Front Cover Drain Tap
20 Drain Line Penetrations
21 Drain Trap
22 Capacitor
23 Electrical Connection Inlets (Alternate)
24 Integrated Control Module
(with fuse and diagnostic LED)
25 24 Volt Thermostat Connections
26 Transformer (40 VA)
27 Circulator Blower
28 Bottom Return Filter Retainer
29 Blower Door Interlock Switch
30 Junction Box
31 Electrical Connection Inlets
32 Auxiliary Limits
33 Coil Front Cover
34 Combustion Air Inlet Pipe
Upflow/Horizontal (GUCA Models)
Counterflow/Horizontal (GCCA Models)
BLOWER COMPARTMENT BURNER COMPARTMENT
1
2
3
4
5
6
7
8
7
9
10
11
3
12
13
14 15
16
17
18
19
20
22
24
23
30
25
26
27
28
31
32
21
20
19
18
33
29
BURNER COMPARTMENT BLOWER COMPARTMENT
1
9
7
8
7
4
6
13
14
21
20
19
18
33
3
24
22
23
25
34
5
26
27
10
29
30
31
32
3
16
15
17
12
18
19
20
2
11