99
Pre-Commissioning
Due to our policy of continuous product innovation, some specifications may change without notification.
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3A Heat Recovery Unit SW01D Rotary Dial Settings
for Branch / Port Group Control
The maximum capacity of each 3A Heat Recovery Unit 60,000 Btu/h. The 96 kBtu/h Hydro Kit re-
quires that two adjacent heat recovery unit ports be connected together with an inverted Y-branch
(ARBLB03321) to provide the necessary capacity. If two ports are connected together, address the
ports as shown below using the SW01D rotary dial on the Main (Master) PCB only.
Table 47: Main Master PCB SW01D Branch / Port Group Control Settings for PRHR*3A Heat Recovery Units.
•
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•
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Branch / Port Group Control
Main (Master) PCB
SW01D Setting
Branch / Port Group
Main (Master) PCB
SW01D Setting
No Grouping
0
Group Control Branches / Ports 5,6 and 7,8
8
Group Control Branches / Ports 1 and 2
1
Group Control Branches / Ports 1,2 and 5,6
9
Group Control Branches / Ports 2 and 3
2
Group Control Branches / Ports 1,2 and 7,8
A
Group Control Branches / Ports 3 and 4
3
Group Control Branches / Ports 3,4 and 5,6
B
Group Control Branches / Ports 5 and 6
4
Group Control Branches / Ports 3,4 and 7,8
C
Group Control Branches / Ports 6 and 7
5
Group Control Branches / Ports 1,2 and 3,4 and 5,6
D
Group Control Branches / Ports 7 and 8
6
Group Control Branches / Ports 1,2 and 3,4 and 6,7
E
Group Control Branches / Ports 1,2 and 3,4
7
Group Control Branches / Ports 1,2 and 3,4 and 7,8
F
Figure 107: Eight-Port 3A Heat Recovery
Unit (Example of How the Ports are
Numbered).
4 3 2 1
38k
IDU
4 3 2 1
92k
IDU
48k
IDU
72k
IDU
Figure 108: Example of Group Controlling Heat Recovery Unit Branches / Ports for the PRHR*3A Heat Recovery Unit Series.
PRE-COMMISSIONING
Hydro Kits with Heat Recovery Units
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manual.