1. Voyager II and III – Energy Recovery Modules
Features and selection
Ph.TISSERAND
October 2010

2. Content Product Features Range ERM construction Technologies Concept
Voyager II / Voyager III design points
Selection procedure
Selection step by step
Batch run tool with case example

3. Range impact - Voyager II: from size 125 to size 340
- Voyager III: from size 275 to size 600
2 Airflow configuration:
Downflow
Horizontal flow
2 Technologies:
Plate Heat Exchanger (PHE)
Heat Recovery Wheel (HRW)
Part of Voyager II and III upgrade program
125
340
Voyager II
275
350
300
400
500
600
Voyager III
Voyager 2 cabinet
Voyager 3 cabinet B C D
A / B
C / D

4. Range impact - Voyager II: from size 125 to size 340
- Voyager III: from size 275 to size 600
2 Airflow configuration:
Downflow
Horizontal flow
2 Technologies:
Plate Heat Exchanger (PHE)
Heat Recovery Wheel (HRW)
20 Hard bill configurations

5. Energy Recovery Module construction
RAL9002 white paint
Top & side panel fixing
50mm double skin panel
Condensate outlet
No water accumulation and carry over
No bacteria development in “wet” area
Hinged / handles on access panels
Easy access to key components (Fan, Filters, dampers, Heat Exchanger)
Safe access.
Self supporting base frame
High quality cabinet construction

6. ERM – Plate Heat Exchanger
A competitive and robust design
Efficiency %
Horizontal discharge
Integrated
Adjustment of fresh air
Comparative enthalpy free cooling capability
Variable exhaust air flow (VFD + plug fan)
Downflow
discharge

7. The high efficiency solution
ERM – Rotary Heat Wheel
The high efficiency solution
Efficiency %
Horizontal discharge
Integrated
Adjustment of fresh air
Comparative enthalpy free cooling capability
Variable exhaust air flow (VFD + plug fan)
Downflow
discharge

8. Technologies in PHE
Direct drive Plenum Fan (AC motor driven by TR1-2800®)
Separated Motor / Speed Inverter to minimize maintenance cost.
Accessible location of TR1-2800® (fresh air section of rooftop unit)
Free cooling by-pass damper
Design to have the same pressure as the heat exchanger in by-pass/free cooling mode. This ensure a constant rooftop airflow and avoids any rooftop fan motor over load
Damper actuator
Mechanical Min/Max position setting
Normal / Reverse rotation switch
24VAC power supply
Modulating on return mixing damper
ON/OFF on free cooling by-pass damper
TR1-2800® Variable Speed Drive
Adjustable parameter Min/Max speed
Remote control via 2-10VDC signal input
Plate heat exchanger
Designed for low pressure drop / High efficiency
Less sensitive to clogging compared to Heat recovery wheel
20 Hard bill configurations

9. Technologies in ERW
Direct drive Plenum Fan (AC motor driven by TR1-2800®)
Separated Motor / Speed Inverter to minimize maintenance cost.
Accessible location of TR1-2800® (fresh air section of rooftop unit)
Damper actuator
Mechanical Min/Max position setting
Normal / Reverse rotation switch
24VAC power supply
Modulating on return mixing damper
Rotary heat exchanger
Designed for low pressure drop / High efficiency
Fixed rotation speed
Filtration on exhaust and fresh air side
Hygroscopic aluminum coating for increased transfer of humidity (increased latent heat transfer)
TR1-2800® Variable Speed Drive
Adjustable parameter Min/Max speed
Remote control via 2-10VDC signal input

10. Voyager II / Voyager III concept
Mixing between return and fresh air is not managed in the rooftop but in the ERM
Return air duct is connected to ERM
Voyager III
In PHE version, the mixing between return and fresh air is done inside the rooftop.
Return air duct is located as the same place as standard rooftop unit.
In ERW version, mixing between return air and fresh air is done inside the ERM
PHE
Exhaust fan treat only exhaust air flow.
Exhaust fan is variable speed according to fresh air %
Standard : a defrost pressure switch that initiate defrost cycle (bypass of PHE) during a pre-set timer sequence
Condensation evacuate via drain pipe.
ERW
Exhaust fan treat 100% of the air flow (Return fan).
Exhaust fan airflow as to be set at commissioning, but remains fixed speed during operation.
No condensate to evacuate, moisture transferred between the 2 airflow.

11. Voyager II
PHE
GDR
FRD
HTX
BPD
EXF
ROOFTOP
MXD
FLT
ERW
LVR
Voyager II
Mixing between return and fresh air is not managed in the rooftop but in the ERM
Return air duct is connected to ERM
PHE
Exhaust fan treat only exhaust air flow.
Exhaust fan is variable speed according to fresh air %
Standard : a defrost pressure switch that initiate defrost cycle (bypass of PHE) during a pre-set timer sequence
Condensation evacuate via drain pipe.
ERW
Exhaust fan treat 100% of the air flow (Return fan).
Exhaust fan airflow as to be set at commissioning, but remains fixed speed during operation.
No condensate to evacuate, moisture transferred between the 2 airflow.
HTX
FLT
ROOFTOP
MXD
EXF
GDR

12. Voyager III PHE 275-300-350-400-500-600 ERW 275-300-350-400-500-600
GDR
ROOFTOP
HTX
BPD
EXF
FLT
ERW
LVR
ROOFTOP
Voyager III
In PHE version, the mixing between return and fresh air is done inside the rooftop.
Return air duct is located as the same place as standard rooftop unit.
In ERW version, mixing between return air and fresh air is done inside the ERM
PHE
Exhaust fan treat only exhaust air flow.
Exhaust fan is variable speed according to fresh air %
Standard : a defrost pressure switch that initiate defrost cycle (bypass of PHE) during a pre-set timer sequence
Condensation evacuate via drain pipe.
ERW
Exhaust fan treat 100% of the air flow (Return fan).
Exhaust fan airflow as to be set at commissioning, but remains fixed speed during operation.
No condensate to evacuate, moisture transferred between the 2 airflow.
HTX
FLT
MXD
EXF
GDR

13. Legend Modulating Fresh air damper Modulating Mixed air damper
FRD
MXD
GDR
Modulating Fresh air damper
Modulating Mixed air damper
With 0-10VDC / 24VAC actuator
Gravity exhaust damper
HTX
Heat recovery exchanger
EXF
Exhaust fan
BPD
By-pass damper
With 24VAC ON/OFF actuator
Mixed air flow
FLT
Fresh air flow
EU3 Air filter
LVR
Return air flow
Fresh air weather louver

14. Selection procedure 2 sheets :
Selection of the Energy recovery performances are not integrated into Iris.
An Excel calculation procedure is available through Litweb on
Voyager II or Voyager III page
►Energy recovery module data
►Performance selection tool
2 sheets :
“Batch_run” is a tools to conduct multiple selection. It is not mandatory for ERM selection
“Selection_tool” is the main sheet used in the selection of ERM.

15. Step 1 : Unit selection Unit selection :
For the selected unit size, select type of ERM and air flow configuration
The Hardbill item for the Energy Recovery Module is updated automatically
List price addition for the rooftop is now added into Iris configuration. Standard order porces for plate Heat Exchanger. TFN process is for Recovery Wheel technolgy.

16. Step 2 : Parameters input
Enter rooftop airflow, % of fresh air, Exhaust airflow (optional), Return air duct pressure drop,
Outdoor and Indoor Temperature and humidity in Summer (Cooling period) and Winter (Heating period)
Click to “RUN Calculation button to refresh data on the rooftop schematic

17. Step 3 : Update Iris rooftop selection
Select unit in Iris with economizer option
Energy Recovery Module will modify the mixed temperature seen by the rooftop. The parameters in blue, red and green has to be reported in the proper cells of the Iris selection window.

18. Optional Step 5 : Integration in to Net EER/COP
The Heat recovered could be considered as incremental cooling/Heating capacity produced by the rooftop.
Step 4 help to update rooftop performance according to this assumption
Place in the yellow cells, output from Iris in Cooling and Heating mode
Updated net capacity and efficiency are calculated according to application point and EN14511 standard (0Pa ESP )

19. Step 6 : Quotation Copy/Paste
Select range of cells in the Excel spread sheet and paste in into the Word cotations to display heat recovery.
Ctrl+C
Ctrl+V

20. Additional Tool : Batch run
Batch run tool is useful when :
Multiple application point are requested
Calculate integration of total energy saved by ERM on a yearly base.
Example : Warsaw
Source :
-14 °C
1 h
-13 °C
15 h
-12 °C
17 h
-11 °C
35 h
-10 °C
38 h
-9 °C
51 h
-8 °C
66 h
-7 °C
88 h
-6 °C
79 h
-5 °C
68 h
-4 °C
123 h
-3 °C
172 h
-2 °C
231 h
-1 °C
280 h
0 °C
431 h
1 °C
408 h
2 °C
402 h
3 °C
339 h
4 °C
310 h
5 °C
6 °C
327 h
7 °C
343 h
8 °C
330 h
9 °C
290 h
10 °C ?
What would be the total energy saving in the following conditions:
Indoor 18°C
24h/24h operation
20% fresh air
YKD600 – PHE
No cooling needs below 10°C outdoor
Nb of Hours / Year
Outdoor temperature

21. Additional Tool : Batch run
1 – Setup selection tool with the proper PHE- Downflow
2 – Put In Batch run input data
3 – Click on “Run” button to get the performances

22. Additional Tool : Batch run
4 – Select Heating capacity o fthe ERM
5 – Multiply kW by Hours of operation to get Annual heating energy saving
= kWh / year
= 48.5 Ton of CO2
(if natural gas is heating energy)

23. Thank you!