Wash. Admin. Code § 51-11C-40373 - Section C403.7.3-Ventilation air heating control
C403.7.3
Ventilation air heating control. For ventilation air units with
supplemental heating capacity that operate in conjunction with zone heating and
cooling systems, supplemental heating shall not warm ventilation supply air to
a temperature greater than 55°F (13°C).
Notes
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C403.7.3 Ventilation air heating control. For ventilation air units with supplemental heating capacity that operate in conjunction with zone heating and cooling systems, supplemental heating shall not warm ventilation supply air to a temperature greater than 55°F (13°C).