FURNACE SPECIFICATIONS
1. These furnaces are manufactured for natural gas operation. Optional LP Conversion Kits are available to convert to
propane gas.
2. For elevations above 2000 ft. the rating should be reduced by 4% for each 1000 ft. above sea level. The furnace must not
be derated, orifice changes should only be made if necessary for altitude.
3. The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufactures method
of in accordance with the "A.S.H.R.A.E. GUIDE" or "MANUAL J-LOAD CALCULATIONS" published by the AIR CON-
DITIONING CONTRACTORS OF AMERICA. The total heat loss calculated should be equal to or less than the heating
capacity. Output based on D.O.E. test procedures, steady state efficiency times output.
4. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
18
Rev. 2
* Off Heating - This fan delay timing is adjustable (60, 90, 120, 180 seconds). 90 seconds as shipped.
MODEL
GUIB045A30
GUIB045B30
GUIB045CX30
GUIB070A30
GUIB070B30
GUIB070CX30
GUIB070A40
GUIB070B40
GUIB070CX40
GUIB090A30
GUIB090B30
GUIB090CX30
GUIB090A50
GUIB090B50
GUIB090CX50
GUIB115A40
GUIB115B40
GUIB115CX40
GUIB115A50
GUIB115B50
GUIB115CX50
GUIB140A50
GUIB140B50
GUIB140CX50
Btuh Input (US)
46,000
69,000
69,000
92,000
92,000
115,000
115,000
140,000
Output (US)
36,800
55,200
55,200
73,600
73,600
92,000
92,000
110,400
A.F.U.E.
80%
80%
80%
80%
80%
80%
80%
80%
Rated External Static (WC)
.10 - .50
.12 - .50
.12 - .50
.15 - .50
.15 - .50
.20 - .50
.20 - .50
.20 - .50
Temperature Rise °F
35 - 65
35 - 65
35 - 65
40 - 70
40 - 70
40 - 70
35 - 65
45 - 75
Pressure Switch Trip Point
-1.80
-1.42
-1.42
-1.30
-1.30
-1.10
-1.10
-1.20
Blower Wheel (D x W)"
9 x 8
9 x 8
10 x 6
10 x 8
10 x 8
10 x 7
10 x 9
10 x 9
Blower Horsepower
1/3
1/3
1/2
1/2
1/2
1/2
3/4
3/4
Blower Speeds
4
4
4
4
4
4
4
4
Max CFM @ 0.5 E.S.P.
1200
1290
1450
1380
1975
1590
1985
2050
Power Supply
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
Min. Circuit Ampacity (MCA)
9.5
10.1
11.5
8.6
15.3
13.5
13.8
14.8
Max. Overcurrent Device
15
15
15
15
20
15
15
15
Transformer (VA)
40
40
40
40
40
40
40
40
Heat Anticipator
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
Limit Setting °F
250
200
210
180
190
160
180
160
Aux. Limit °F.
160
160
160
160
160
160
160
160
Fan Delay On
30 secs.
30 secs.
30 secs.
30 secs.
30 secs.
30 secs.
30 secs.
30 secs.
Off Heating *
90 secs.
90 secs.
90 secs.
90 secs.
90 secs.
90 secs.
90 secs.
90 secs.
Off Cooling
45 secs.
45 secs.
45 secs.
45 secs.
45 secs.
45 secs.
45 secs.
45 secs.
Gas Supply Pressure (Nat/LP)
7" / 11"
7" / 11"
7" / 11"
7" / 11"
7" / 11"
7" / 11"
7" / 11"
7" / 11"
Manifold Pressure (Nat/LP)
3.5 " / 10"
3.5 " / 10"
3.5 " / 10"
3.5 " / 10"
3.5 " / 10"
3.5 " / 10"
3.5 " / 10"
3.5 " / 10"
Orifice Size (Nat/LP)
#43 / #55
#43 / #55
#43 / #55
#43 / #55
#43 / #55
#43 / #55
#43 / #55
#43 / #55
Number of Burners
2
3
3
4
4
5
5
6
Vent Connector Diameter
4"
4"
4"
4"
4"
4"
4"
4"
Shipping Weight (lbs.)
140
151
152
169
178
190
194
198
