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Hastings Industries Inc.
Gas Units
Gas Units - Page 6
Gas Units
Specification – Fan Models
Fan Model |
Btuh Rating(1) |
Temp Rise ºF |
Air Delivery SCFM |
Fan Diam. Inches |
Fan Motor (2) |
Power Venter Motor (2) | Weight | ||||||||
| Input | Output | H.P |
AMPS |
RPM |
Type |
H.P |
AMPS |
RPM |
Type |
Crated | Net | ||||
GFH-100 |
100,000 |
82,800 |
51 |
1475 |
19 |
1/15 |
2.2 |
1050 |
Sh.P |
1/20 |
1.6 |
3000 | S.C | 188 | 149 |
GFH-140 |
140,000 |
115,850 |
54 |
1970 |
18 |
1/15 |
2.1 |
1050 |
S.C |
1/20 | 1.6 | 3000 | S.C | 231 | 199 |
GFH-180 |
180,000 |
148,950 |
56 |
2460 |
18 |
1/8 |
4.0 |
1050 |
S.C |
1/20 | 1.6 | 3000 | S.C | 283 | 238 |
GFH-230 |
230,000 |
188,600 |
57 |
3080 |
20 |
1/6 |
4.3 |
1050 |
S.C |
1/5 | 2.5 |
3000 | S.C | 352 | 297 |
GFH-280 |
280,000 |
227,400 |
61 |
3420 |
20 |
1/3 |
5.1 |
1050 |
S.C. |
1/5 | 2.5 | 3000 | S.C | 405 | 345 |
GFH-360 |
360,000 |
295,000 |
55 |
4950 | 2) 20 |
1/3 |
2) 4.0 |
1050 |
S.C. |
1/5 | 2.5 | 3000 | S.C | 529 | 464 |
(1) Rating shown are elevations up to 2,000 ft. For over 2,000 ft. reduce ratings 4 % for each 1,000 ft above sea level.
(2) Cushion mounted and overload protected. All motors except F - 50 are totally enclosed "Sh.P" is Split Capacitor, Standard motors are 115/60/1.
10 Year Heat Exchange Guarantee
The Complete heat exchanger of the hasting Gas Fired Unit Heater is guaranteed for 10 years. This is not pro-rated or "mileage" type warranty ; it provides full coverage during the entire guarantee period "if the heat exchanger should fail at any time during the first at any time during the first ten years of normal space heating operation, it will be replaced free of charge (labor not included)".
This warranty provides protection against normal wear and tear during the specified time but does not apply to equipment which has been subjected to misuse, negligence or accident; nor to equipment which has not been installed, operated and serviced accordingly to printed factory instructions; nor to equipment which has been operated beyond the factory rated capacity, nor to equipment which has been altered in any way so that the performance of the equipment is affected.
Estimating Heat Loss
TABLE 1. HEAT LOSS FACTORS
TO MAINTAIN 70% TEMPERATURE DIFFERENCE BETWEEN INSIDE AND OUTSIDE |
NUMBER OF EXPOSED WALLS |
CEILING EXPOSURE |
||
HEATED SPACE ABOVE |
ROOF INSULATED |
ROOF NOT INSULATED |
||
FACTOR |
FACTOR |
FACTOR |
||
4 |
4.0 |
4.5 |
5.5 |
|
3 |
3.5 |
4.0 |
5.0 |
|
2 |
3.0 |
3.5 |
4.5 |
|
1 |
2.5 |
3.0 |
4.0 |
|
TABLE 2. CORRECTION FACTORS
| TEMPERATURE DIFFERENCE | 50º |
60 º |
70 º |
80 º |
90 º |
| MULTIPLIER | 0.72 |
0.86 |
1.00 |
1.14 |
1.28 |
This short-cut method may be used to determine appropriate unit heater output required. (Use conventional methods for more accurate calculations.)
HEAT LOSS (Btuh) = Cubic feet of space x Factor.
- For large glass area in two or more walls, add 10% to 20%
- For garages, add from 20%-50% to Table 1, depending on traffic and exposure.
- For temperature difference other than 70º , multiply by correction factor Table 2.
EXAMPLE : Room 82 x 45 x 12; two walls exposed; space above is heated. Design temperature : -10º outside, 70º inside (temperature difference = 80º.)
SOLUTION : HEAT LOSS = 44,280 (cu.ft.) x 3 (from Table 1) x 1.14 (from Table 2) = 151,438 Btuh
INPUT (Btuh) = Heat Loss x 1.32 = 151,438 x 1.32 = 199,898 Btuh
USE : Two (2) Model GF - 100 Unit Heaters
Throw Chart – GFH Models.
Mounting Height (2) |
Heater Size and Louvers Position (1) |
|||||||||||
GFH-100 |
GFH-140 | GFH-180 | GFH-230 | GFH-280 | GFH-360 | |||||||
"A" |
"B" |
"A" |
"B" |
"A" |
"B" |
"A" |
"B" |
"A" |
"B" |
"A" |
"B" |
|
10' |
59 |
44 |
68 |
51 |
59 |
- |
- |
- |
- |
- |
- |
- |
12' |
53 |
41 |
62 |
47 |
72 |
54 |
81 |
61 |
90 |
68 |
- |
- |
14' |
49 |
38 |
57 |
43 |
66 |
50 |
75 |
56 |
84 |
63 |
103 |
78 |
16' |
44 |
33 |
51 |
38 |
60 |
45 |
67 |
50 |
76 |
57 |
95 |
70 |
18' |
- |
- |
46 |
35 |
55 |
41 |
61 |
46 |
69 |
52 |
87 |
63 |
20' |
- |
- |
- |
- |
51 |
38 |
56 |
42 |
63 |
47 |
78 |
57 |
(1) "A" equal throw of standard unit with horizontal
louvers only.
"B" equal throw with optional vertical louvers
turned "out"
(2) Distance from floor to top heater.
To find spread : Horizontal louvers only = 45 % of throw; optional vertical louvers turned "out" = 80 % of throw . By adjusting louvers , a wide variation throw spread can be obtained.