Rinnai 34
Ducted Gas Heater IM
Table 9. Outlet Register Chart
System Model
Airflow Rate
(L/s)
A
B
C
D
Maximum No.
Ceiling Outlets
Typical No.
Floor Outlets
Minimum No.
Floor/Ceiling
Outlets
(Adaptive Zoning)
Minimum No.
Floor/Ceiling Outlets
SP6 Heaters – Universal
SP615U
695
12
13
5
2
SP623U
733
12
13
5
2
SP623U XA
769
13
13
5
2
SP630U
1000
15
23
7
3
SP630U XA
1025
17
23
7
3
SP635U
1073
17
24
7
2.5
SP6 Heaters – Internal
SP615IN
695
12
13
5
2
SP623IN
765
12
13
5
2
SP623IN-XA
795
14
13
5
2
SP630IN
1065
16
22
7
3
SP630IN-XA
1095
17
22
7
3
SP635IN
1130
17
24
7
2.5
SP5 Heaters – Universal
SP521U
785
12
13
5
1.5
SP521U XA
830
14
13
5
1.5
SP530U
1045
16
24
7
2
SP530U XA
1108
17
24
7
2
SP535U
1133
17
24
7
2.5
SP5 Heaters – Internal
SP521IN
785
12
13
5
1.5
SP521IN-XA
830
14
13
5
1.5
SP530IN
1080
17
24
7
2
SP530IN-XA
1140
17
24
7
2
SP535IN
1160
17
24
7
2.5
SP4 Heaters – Universal
SP415U
620
10
12
6
2
SP421U
621
10
12
6
2
SP430U
918
16
23
7
2
SP435U
1004
17
23
7
3
BX5 Heaters – External
BX520EN (300mm)**
605
10
12
5
2
BX520EN (350mm)**
667
12
13
6
2
BX526EN (350mm)**
944
16
23
7
2
BX526EN (400mm)**
1011
17
23
7
3
** Model and base-box duct size
Note:
For SP4, SP5 and SP6 installations, the normal return air pop configuration is side entry, but can be changed to the end of the
fan cabinet if necessary. Connecting the return air duct to the end of the unit reduces the rated airflow by up to 30%.