Hydraulic Kit (pump and tank) Pictures from prototype

Main Characteristics Size and shape = 5 HP unit 100 litre tank for all models Separate power supply Anti Freeze protection Hydraulic Kit (pump and tank)

100 litre tank for all models ? The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Q x 1000 x  t  x d x Cw x n V = Q = Cooling Capacity at the lowest capacity step (W) t = Anti-recycling time of the compressor (s)  = Specific mass of the fluid (kg/m³) d = Thermostat difference (step length) (°C) Cw = Specific heat of the fluid (J/kg°C) (4186 for water) n = Nr of compressors that can work independently

100 litre tank for all models ? The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Water Out (°C) Time sec.) Thermostat Difference Less Water More Water

100 litre tank for all models ? The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Water Out (°C) Time sec.) Thermostat Difference Water Volume should be selected to cope with the anti-recycling timer of the compressor 240 Anti Recycling Timer Compressor On

Only 1 compressor: The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Example: EUWA20HZ Nominal Cooling Capacity: 42 kW Capacity Step: % Thermostat Difference: 1,5 °C Anti Recycling Timer: 240’’ Load: 21 kW  Only half the capacity of the chiller is required…

For 1 compressor: The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time During On - mode: During Off - mode: System will cool down with a capacity of 21 kW System will heat up with a capacity of - 21 kW

For 1 compressor: The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Water Out (°C) Time sec.) 240 Cooling 21 kW Heat Up: 21 kW Thermostat Difference Anti Recycling Timer Compressor Off

For 1 compressor: The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Out of the formula Q = m * c *  T Q = m / (  t) * c *  T m = (Q *  t) / (c *  T) m =  * V c water = 4186 J/kg°C V = W * 120 s 4186 J/kg°C* 1,5 °C V = 400 l

For 2 compressors: The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Example: EUWA20HZ Nominal Cooling Capacity: 42 kW Capacity Steps: % Thermostat Difference: 1,5 °C Anti Recycling Timer: 240’’ Load: 21 kW

For 2 compressors: The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Compressor 1 can operate continuously Compressor 2 is continuously switched off Capacity = Load Constant Temperature is obtained  no buffer tank needed

For 2 compressors: The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Water Out (°C) Time sec.) 240 Thermostat Difference Anti Recycling Timer Compressor Off

For 2 compressors: The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Example: EUWA20HZ Nominal Cooling Capacity: 42 kW Capacity Steps: % Thermostat Difference: 1,5 °C Anti Recycling Timer: 240’’ Load: 10,5 kW

For 2 compressors: Auto lead - lag switching CAPACITYLOAD 21 kW10,5 kW Cooling Down 0 kW- 10,5 kW Heating Up 21 kW10,5 kW Cooling Down 0 kW- 10,5 kW Heating Up OnOff The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time

For 2 compressors: The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time Water Out (°C) Time sec.) 240 Cooling 10,5 kW Heat Up: 10,5 kW Thermostat Difference Anti Recycling Timer Compressor Off Compressor 1 On Compressor 2 On

The water (glycol) volume should be so big that the time necessary to pull down the water temperature equal to the thermostat difference, is half the time of the anti-recycling time V = W * 60 s 4186 J/kg°C* 1,5 °C V = 100 l For 2 compressors:

10+ + The max. water volume is determined by the capacity of a 10 Hp compressor The max. water volume is determined by the capacity of a 10 Hp compressor

Hydraulic Module Model Names 4 EHMC 10 AV1 ( 5  10 HP ) 4 EHMC 15 AV1 (15 HP ) 4 EHMC 30 AV1 ( 20  30 HP) Model Names 4 EHMC 10 AV1 ( 5  10 HP ) 4 EHMC 15 AV1 (15 HP ) 4 EHMC 30 AV1 ( 20  30 HP)

Outlook 1284 mm 635 mm 724 mm Pictures from prototype

Outlook Modification to service panels : Other Cover ! Pictures from prototype Water Outlet Water Inlet

Outlook Pictures from prototype

Outlook Air Purge Pressure port (On the same side as the regulating valve) Pictures from prototype

Outlook Pressure Gauge Safety Valve Pressure regulating Shut-off valve Pressure regulating Shut-off valve Pressure port Pictures from prototype

Outlook Water INLET and Shut-Off valve Water INLET and Shut-Off valve Drain Plug Pictures from prototype For Freeze-up Protection For Freeze-up Protection

Outlook Main Switch Manual - O - Auto Main Switch Manual - O - Auto Pictures from prototype

Field Wiring Standard: 6 Core Outlook Thermal Protector Pump Relay Pictures from prototype

Compatibility EHMC 10 AV1 –EUWA 5 / 8 /10 H (Z) W1 / T1 –EUWY 5 / 8 10 H W1 EHMC 10 AV1 –E–EUWA 5 / 8 /10 H (Z) W1 / T1 –E–EUWY 5 / 8 10 H W1 EHMC 15 AV1 EHMC 15 AV1 EHMC 30 AV1 EHMC 30 AV1 –EUWA 15 H (Z) W1 / T1 –EUWY 15 H W1 –E–EUWA 15 H (Z) W1 / T1 –E–EUWY 15 H W1 –EUWA 20 / 25 / 30 H (Z) W1 / T1 –EUWY 20 / 25 / 30 H W1 –E–EUWA 20 / 25 / 30 H (Z) W1 / T1 –E–EUWY 20 / 25 / 30 H W1 EUWA 5 / 8 /10 H (Z) W1 / T1 EUWY 5 / 8 10 H W1 EUWA 5 / 8 /10 H (Z) W1 / T1

Installation Alongside the chiller or remotely A drain pan enables an indoor installation under all conditions A drain pan enables an indoor installation under all conditions Water inlet is at the same height as the chiller outlet Power supply possible via the chiller Easy hydraulic balancing via pressure regulating valve

Options Freeze-Up Protection ( 200 Watt Heater ) High Static Pump (30 m H 2 O) = Standard

1. EHMC 30 HSP 2. EHMC HSP 3. EHMC EHMC EHMC PD 6. EHMC 10 PD mH 2 0 / 10 = bar Water Flow ( l/min ) Pump System Pressure Regulating Valve Pump Characteristics

Factory Setting Water Pressure ( Pr ) Height Diff.min. Pre-Pressure Diagram Accumulator

Water Pressure ( Pr ) Height Diff. Example: Water Volume = 130 l Heighest point above hydrokit = 5m Or we change the pre pressure from 1.5 to 0.8 bar Or we increase the water pressure to 1,9 bar

Water Pressure ( Pr ) Height Diff. Here we have to decrease the pre-pressure to 0,8 bar Example: Water Volume = 200 l Heighest point above hydrokit = 5m

4 m 5,5 m 1,5 m Office1 A=25,5m 2750W T=23° Office 2 A=14m 1400W T=23° Office 3 A=14m 1400W T=23° Reception A=14m 1400W T=24° Meeting Room A=19m 1400W T=24° Example: Office Ceiling Height in all rooms: 2,3 m 3,5

1. Selection of indoor units: Indoors Office 1 Office 2 Office 3 Reception Meeting Room Cooling Cap W 1453 W 1280 W 2774 W WF 491 l/h 249 l/h 220 l/h 477 l/h Pressure Drop 1420 Pa 960 Pa 1690 Pa 1780 Pa Connections 3/4“ 1/2“ 3/4“

2. Selection Chiller Sum of Capacity: Office 1 Office 2 Office 3 Recpt. Meeting Room 2856W W W W W = 9816W T a = 30°C, Water: 10/15 Selected Chiller EUWA 5 with Cooling Capacity of 10,3 KW

3. Calculation Water Flow : Chiller : Connection: 3/4“ Capacity: 10,3KW  T = 5°K Faktor (Kf) 0,86 V = (Q x Kf) /  T = (10,3KW x 0,86) / 5°K = 0,5 l/s Technical Data from Databook.

4. Calculation Pressure Drop Evaporator : V = (Q x Kf) /  T = (10,3KW x 0,86) / 5°K = 0,5 l/s 0,5 l/s = 1,8 m /h This equals ( see databook ) 30 kPa Pressure Drop at Evaporator 3.

Piping Diagram 2,5m 3,5m 0,5m5,5m4m 2,3m Office 1 Office 2 Office 3 Reception Meeting Room W 1453 W 1453 W 1280 W 2774 W 1 ¼“ 1“ ¾“ EUWA 5

5. Calculation Pressure Drops in Pipes : Information from Databook

6. Calculation of total Pressure Drop : Pressure Drop Indoor Units + Sum of Pressure Drops of Piping + Pressure Drop Outdoor Unit __________________________________________ Total Pressure Drop  p I ndoor+piping +  p O utdoor =  p Total Pa Pa = Pa  4 mH 2 0

mH 2 0 / 10 = bar Water Flow (l / min) Pump System Pressure Regulating Valve