Baxi HP40 MB Series User's Operation Manual page 28

Table4 The environment temperature curve of the high temperature setting for cooling
T4
1-T1S
2-T1S
3-T1S
4-T1S
5-T1S
6-T1S
7-T1S
8-T1S
- 10≤ T4＜15 15≤ T4＜22
20 18
21 19
22 20
23 21
24 21
24 22
25 22
25 23
26
22≤ T4＜30 30≤ T4
17 16
18 17
19 17
19 18
20 18
20 19
21 19
21 20