Application Manual and System Selection Guide
7
Line 11 Appliances: For appliances, the factor is a
constant 1200. Enter this in the column COOL BTU.
NOTE: For the room-by-room analysis, this 1200 factor
would be included in the kitchen heat gain.
Line 12 Sub-Total: In the column COOL BTU (HEAT
BTU), enter the subtotal of Lines 1 through 11.
Line 13 Total Sensible: In the FACTORS column,
enter a factor for Duct Gain Cooling, based on where
the plenum duct will be run, such as through an attic or
basement (see Figure 1.6). Multiply the subtotal on Line
12 by the factor and enter result in the column COOL
BTU on Line 13. These duct factors are also available in
Table 2 on the back of the Kwik-Way sheet.
Line 14 Heat Gain For Cooling Load: Multiply the
COOL BTU on Line 13 by the factor of 1.3 and enter
result in the column COOL BTU on Line 14. This
calculation accounts for the moisture introduced into
the dwelling by people, cooling or bathing. Experience
has shown this latent heat load is an additional 30% of
the total sensible load.
EQUIPMENT SELECTION
Line 15 Equipment Selection: Based on the heat
gain in Line 14 (and/or heat loss in Line 13), select the
appropriate cooling-only Model “ESP” system from the
applicable product specication sheet and enter the
information on Line 15.
Example: For our 30,706 heat gain, you would select a
Model ESP- 3642 (3-ton) system, as it has the closest
cooling capacity to the 2.6 ton overall Heat Gain.
ROOM TERMINATORS (OUTLETS)
Line 15 Equipment Selection: Based on the equipment
selected, determine the recommended number fully
open outlets from Figure 1.7 and enter the information
on Line 15. This information is also available in Table 3
on the back of the Kwik-Way sheet.
Example: 3-ton system = 18 terminators (fully open)
However, this is for estimating purposes only and does
not preclude performing a room-by-room analysis which
is completely necessary to assure a balanced system
Considering each room outlet (fully open or partially
oriced) requires a terminator/sound attenuating tubing
installation kit, we recommend completing the room-by-
room analysis before pricing the job.
FIGURE 1.7: TERMINATOR SELECTION
FIGURE 1.6: DUCT GAIN (LOSS) FACTORS
DUCT FACTOR
COOLING HEATING
Attic Unvented
Attic Vented
Crawl Space (Vented)
LOCATION
Basement
1.15
1.15
1.05
1.00
1.15
1.15
1.15
1.10
NOMINAL
TONNAGE
MODEL
ESP-2430
ESP-2430
ESP-3642
ESP-3642
ESP-4860
ESP-4860
2
2 1/2
3
3 1/2
4
5
RECOMMENDED
12
14
17
19
26
26
MINIMUM RECOMMENDED
NUMBER OF FULLY OPEN OUTLETS *
* The minimum or recommended number of outlets means fully open outlets. Any
outlet having an orifice would be only a percentage of an outlet.
12
15
18
21
24
30