Upflow
Left Side View
28-3/4
28
20
3/4
Electrical
Supply
Hole "Low
Voltage"
Gas
Supply
Hole
4-5/8
1 1/2
23
Side
14
Cut-Out
1 5/8
23 1/2
1
Bottom Knock-Out
FURNACE
MODEL
GUI__045
GUI__070
GUI__090
GUI__115
GUI__140
10
Rev. 2
PRODUCT IDENTIFICATION
GUI_ 80% Upflow/Horizontal
Knock-Out
For
Venting
3/4
4 5/8
Electrical
Hole "High
Voltage"
GUI_ DIMENSIONS
A
B
16-1/2
15
20-1/2
19
24-1/2
23
CLEARANCES TO COMBUSTIBLE SURFACES
GUI_ MODEL FURNACES
UPFLOW
1
FRONT
6
RIGHT
0
LEFT
0
REAR
0
TOP
1
2
FLUE
6
FLOOR
C
1
= 3 inch when using Type B-1 vent is used.
2
= 1 inch when Type B-1 vent is used.
C = If placed on combustible floor, floor MUST be wood ONLY.
ACCESSIBILITY CLEARANCES (MINIMUM)
36" at front is required for servicing or cleaning.
NOTE: In all cases accessiblility clearance shall take precedence over clear-
ances from the enclosure where accessibility clearances are greater.
All dimensions given in inches.
Upflow
Front View
A
B
3/4
C
D
Bottom Knock-Out
C
D
E
5-1/4
12-5/8
4
7-1/4
14-5/8
4
9-1/4
18-5/8
4
HORIZONTAL
HORIZONTAL
LEFT
RIGHT
Alcove
Alcove
6
12
12
6
0
0
6
6
2
2
6
6
C
C
Upflow
Right Side View
E
4 11/16
Supply
2-1/2
Side
Cut-Out
Minimum
Vent
Diameter
4
4
5