Application Manual and System Selection Guide

6
Line 1 Windows (cooling): In the column AREA SQ FT,
ll in the total square footage of all exposed windows and
glass doors, based on the direction they are facing. Multiply
the square footages by the appropriate factors and enter
results in the column COOL BTU (see Figure 1.5).
Line 2 Glass Doors (heating): For heating installations,
in the column AREA SQ FT, ll in the total square footage
of all exposed glass doors. Multiply the square footage
by the factor and enter result in the column HEAT BTU.
Line 3 Windows (heating): For heating installations, in
the column AREA SQ FT, ll in the total square footage
of all exposed windows. Multiply the square footage by
the factor and enter result in the column HEAT BTU.
Line 4 Standard Doors: In the column AREA SQ FT, ll
in the total square footage of all exposed standard doors
(non-glass). Multiply the square footage by the factor and
enter result in the column COOL BTU(HEAT BTU).
Line 5 Partitions: In the column AREA SQ FT, ll in
the total square footage of all partitions (less doors and
windows). Multiply the square footage by the factor and
enter result in the column COOL BTU (HEAT BTU).
Line 6 Exposed Wall: In the column AREA SQ FT,
subtract the square footages in lines 1, 2, 3, 4, & 5 from
the total exposed wall square footage and enter the result.
Multiply the square footage by the factor and enter
result in the column COOL BTU(HEAT BTU).
Line 7 Ceiling/Roof and Line 8 Floor: In the column
AREA SQ FT, ll in the total square footage of the
ceilings and oors. Multiply the square footage by the
factors and enter the results in the column COOL BTU
(HEAT BTU).
Line 9 Ventilation/lnltration: Incoming outside air,
from either mechanical ventilation or inltration, must
be accounted for:
A. For inltration (no mechanical ventilation
available, as in our example), in the column
AREA SQ FT, ll in the square footage of
the total exposed walls. Multiply the square
footage by the factor and enter result in the
column COOL BTU (HEAT BTU).
B. If mechanical ventilation is available, select
the appropriate factor from Table 1 (Kwik-Way
sheet). Multiply the factor by the CFM of the
mechanical ventilation and enter result in the
column COOL BTU (HEAT BTU).
Line 10 People: In the column AREA SQ FT, ll in the
total number of people living in the home. Multiply the
number by the factor of 300 (constant) and enter result
in the column COOL BTU.
FIGURE 1.5: TOTAL STRUCTURE COOLING EXAMPLE (CONTINUED)
RECOMMENDED NO. OF OU
ROOM:
X
=
AREA
SQ FT
HEAT
BTU
COOL
BTU
HEAT COOL
TOTAL STRUCTURE
AREA
SQ FT
HEAT
BTU
COOL
BTU
HEAT COOL
FACTORS
HEAT COOL
Lg x Wd
L ft exp wall
Ceiling Ht
To tal Exp wall
ITEM OF CONSTRUCTION
Shade Exposure
N
NE & NW
E & W
SE & SW
S
1 WINDOWS
(cooling)
Including
Glass Doors
2 Glass Doors (heating)
3 Windows (heating)
4 Standard Doors (non-glass)
5 Partitions (less doors & windows)
6 Exposed Walls (less 1, 2, 3, 4 & 5)
7 Ceiling/Roof
8 Floor
9 Ventilation (Mechanical)/Infiltration
10 People
11 Appliances
12 Sub-To tal Lines 1 - 11
13 Sensible {Line 12 x Duct Factor (Fig.1.6)}
14 Heat Gain for Cooling Load (Line 13 x 1.3)
15 Equipment Selected (Fig.1.7)
300
1200
1.3
16 Adjusted Loads: LAF (Fig. 2.3) x Line 13 and Line 14
OUTDOOR UNIT :
3-Ton
ROOM:
X
=
AREA
SQ FT
HEAT COOL HEAT COOL HEAT
COOL
INDOOR UNIT : ESP-3642
FROM FLOOR PLAN
House Width = 65'
House Depth = 38'
Ceiling Height = 8'
Windows-N = 3 (3' x 4') = 36'
Windows-N = 1 (4' x 5') = 20'
Windows-W =3 (3' x 4') = 36'
Windows-E = 1 (4' x 5') = 20'
Windows-S = 3 (3' x 4') = 36'
Windows-S = 1 (4' x 8') = 32'
Doors = 3 (3' x 7') = 63'
Partitions = 1 (8' x 25' - 21') = 179'
People = 3
20
50
25
9
2.3
2.0
2.5
.5
1.2
1.15
206
8
1648
56
56
68
63
179
1226
2470
2470
1648
3
1120
2800
1700
567
412
2452
6175
1235
1978
900
1200
20539
23620
30706