Carrier HRVCCLHA Product Data page 7

Physical data (continued)
Model
Capacity—CFM @
0.5-0.3ESP (in. wc)
Efficiency (Sensible)—Percent Efficiency (Sensible) Percent
32_F (0_ C)
-- 13_F (-- 25_ C)
Efficiency (Latent)—Percent
@ all temperatures
Heat Core Exchange Area—
cu ft (cu m)
Model
Voltage
Max Power — watts
Max Amps
Methods to Size HRVs
Method 1:
1. Calculate cubic feet of occupied space
2. Multiply by recommended air changes per hour (AC/h)
3. Divide by 60 minutes per hour to convert to CFM
Example: 2000 sq ft with 8 ft ceiling
0.35 air changes per hour (AC/h)
(2000 sq ft x 8 ft ceiling x 0.35 AC/h) / 60 min/h =
93.3 CFM
Method 2:
1. Multiply number of people times 15 CFM/person
2. Multiply number of bathrooms times 20 CFM/each
3. Add 25 CFM for kitchen
Example: 2 people
2 bathrooms
1 kitchen
(2 x 15) + (2 x 20) + 25 = 95 CFM
Additional heating and cooling load charts
Although the ventilators process the outside air before it enters
the home, additional heating and cooling loads need to be
considered.
HRVCCLHA1150 HRVCCLHA1250
130--- 168 191--- 210
65 65 65 65
65 60
0 0
120 (3.4) 166 (4.7)
HRVCCLHA1150 HRVCCLHA1250
120 120
150 218
1.4 1.9
HEATING LOAD BTU
The heating load chart shows the heating loads in BTUh for a
range of winter design temperatures for each model of ventilator.
EXAMPLE: The heating design temperature for Milwaukee,
WI, is - -4_F. At - -5_F, the additional heating load of the
HRVCCLHA1250 is 8417 BTUh. This additional load should be
taken into consideration when sizing the heating equipment.
7
HRVCCSVA1100 HRVCCSHA1100
99--- 107 99--- 107
66 66 66 66
66 66
0 0
55 (5.1) 55 (5.1)
HRVCCSVA1100 HRVCCSVA1100
120 120
150 150
1.3 1.3
Heat Load (BTUh)
Outside Temp @ Inside Design
Temp 72°F
°F
HRVCCLHA1150
–25 4,688
–20 4,466
–15 4,598
–10 4,334
–5 4,069
0 3,805
5 3,541
10 3,502
15 3,220
20 2,938
25 2,950
30 2,636
35 2,322
40 2,009