American Aldes Aldes SIP Ventilation Design Guide

Section 3       Page 31
TYPICAL VENTILATION SCENARIOS IN SINGLE- AND MULTI-FAMILY HOMES: ZONE 2
• SCENARIO #1 EXISTING CONDITIONS
Central Ventilation System: No
Central AC/Heat: No  
Recommended Ventilation Modifications
OPTION A   
Zone 2A – Install a fully ducted Energy Recovery Ventilator (VZ-IAQ-ERV) to provide general 
ventilation.  Duct  to  bathrooms  and  kitchen  if there is no local ventilation already in place . 
Ensure the system is balanced and the airflow is regulated by using Zone Register...

Section 3       Page 32
        Recommended Ventilation Modifications
Ensure the existing ventilation system provides whole-house continuous ventilation, and that 
local exhaust ventilation meets recommended airflow rates. If not: 
OPTION A   
Zone 2A – Install a fully ducted Energy Recovery Ventilator (VZ-IAQ-ERV) to provide general 
ventilation.  Duct  to  bathrooms  and  kitchen  if there is no local ventilation already in place . 
Ensure the system is balanced and the airflow is regulated by using...

Section 3       Page 33
OPTION A  
Zone 2A – Install a fully ducted Energy Recovery Ventilator (VZ-IAQ-ERV) to provide general 
ventilation. Alternately,  duct  the  supply  air  from  the  ERV  to  the  return  of  the AHU.  This  will 
result in higher operating costs due to the AHU needing to run continuously.  
Duct  to  bathrooms  and  kitchen  if  no  local  ventilation  is  in  place.  Ensure  the  system  is 
balanced,  and  the  airflow  is  regulated  by  using  Zone  Register  Terminals...

Section 3       Page 34
        Recommended Ventilation Modifications
Ensure the existing ventilation system provides whole-house continuous ventilation, and the 
local exhaust ventilation meets recommended airflow rates. If not: 
OPTION A 
Zone 2A –  Install a fully ducted Energy Recovery Ventilator (VZ-IAQ-ERV) to provide general 
ventilation. Alternately,  duct  the  supply  air  from  the  ERV  to  the  return  of  the AHU.  This  will 
result in higher operating costs due to the AHU needing to run...

Section 3       Page 35
3.3 DESIGN RECOMMENDATIONS: CLIMATE ZONE 3
Climate Zone 3A, Warm/Humid – Mixed, humid climates experience all four seasons, but season length 
and extremity vary by location. These regions receive more than 20 inches of rain annually. The average 
winter temperature typically drops below 45°F. Summers can be extremely hot and humid. Many of these 
regions will experience some snowfall and icing during winter months.
Thermal Criteria: 4500 < CDD50°F ≤ 6300*
*CDD = Cooling Degree...

Section 3       Page 36
Climate Zone 3B, Warm/Dry – Mixed, dry climates experience seasonal temperature variations and 
typically experience all four seasons. Season length and extremity vary \
by location. These regions 
typically receive less than 20 inches of rain annually. 
Thermal Criteria: 4500 < CDD50°F ≤ 6300*
*CDD = Cooling Degree Days
Zone 
3B
Dry (B) Moist (A)
Warm-
Humid
Marine 
(C)
Recommended Ventilation Solutions for Climate Zone 3B
VZ-IAQ-ERV                                  
See Appendix...

Section 3       Page 37
Climate Zone 3C, Warm/Marine – Temperate climates found on the coast. These areas typically do not 
have extreme seasons. Temperatures remain relatively mild year-round due to the high heat capacity of 
water. Marine climates only experience two seasons, summer and winter. Summer months are dry, while 
winter can be very wet. To be considered a marine climate, 65% of annual total rainfall must occur in less 
than six months of the year. These climates are generally humid, but...

Section 3       Page 38
TYPICAL VENTILATION SCENARIOS IN SINGLE- AND MULTI-FAMILY HOMES: ZONE 3
• SCENARIO #1 EXISTING CONDITIONS
Central Ventilation System: No
Central AC/Heat:  No
  
Recommended Ventilation Modifications
OPTION A 
Zone 3A – Install a fully ducted Energy Recovery Ventilator (VZ-IAQ-ERV) to provide general 
ventilation.  Duct  to  bathrooms  and  kitchen  if there is no local ventilation already in place . 
Ensure the system is balanced and the airflow is regulated by using Zone Register...

Section 3       Page 39
• SCENARIO #2 EXISTING CONDITIONS
Central Ventilation System: Yes
Central AC/Heat:  No
  
 
Recommended Ventilation Modifications
Ensure the existing ventilation system provides whole-house continuous ventilation, and that 
local exhaust ventilation meets recommended airflow rates. If not:
OPTION A 
Zone 3A – Install a fully ducted Energy Recovery Ventilator (VZ-IAQ-ERV) to provide general 
ventilation.  Duct  to  bathrooms  and  kitchen  if there is no local ventilation already...

Section 3       Page 40
• SCENARIO #3 EXISTING CONDITIONS
Central Ventilation System: No
Central AC/Heat: Yes
  
 
Recommended Ventilation Modifications
Ensure the existing ventilation system provides whole-house continuous ventilation, and that 
local exhaust ventilation meets recommended airflow rates. If not: 
OPTION A  
Zone 3A – Install a fully ducted Energy Recovery Ventilator (VZ-IAQ-ERV) to provide general 
ventilation.  Duct  to  bathrooms  and  kitchen  if there is no local ventilation already...