We are using new version of Carrier HAP 5.11i software which forces us to set leaving temperature for reheat box. There is no requirement for reheat box temperature in appendix G so there are 2 ways of modeling that case:
1. Reheat LAT can not be set according to G220.127.116.11.1. I assume that for heating purpose of System type 7 airflow rate should be constant minimum required and max reheat temperature should vary based on max heating demand. In our case we set the maximum allowed reheat box LAT in Carrier HAP, or
2. We set Reheat LAT according to ASHRAE G18.104.22.168.1 ( 11.1C + thermostat set point) airflow in heating operation is higher in that case. We can get extra savings.
I want to be sure that method 1 is correct.
Many thanks for help