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Summary of Contents for Thermia EM3
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Installation Guide Expansion Module 3 (EM3) For light commercial heat pumps with Genesis control platform www.thermia.com...
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Thermia AB is not liable or bound by warranty if these instructions are not adhered to during installation or service. The English language is used for the original instructions. Other languages are a translation of the original instructions. (Directive 2006/42/EC)
Max load on 230V feeding relays (marked "FR..") or potential free relays (marked "R..") is 230W with normal motors. Max 850W with soft starting loads. Max total load on EM3 is 5A. Max load on TRIAC output (marked "TR") = 10VA Total max load on 24V supply to supply mixing valve actuators: 21VA IMPORTANT! Requires Genesis software version 7.01 or later.
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Installation Guide Expansion Module 3 (EM3) List of supported functions: ID: 1-5 ID: 10-17 (+10) ▪ ID:1 TWC/WCS ▪ ID:2 Distribution circuit 2 & 3 ▪ ID:3 Distribution circuit 4 & 5 ▪ ID:4 Cooling ▪ ID:5 Pool ▪ ID:10-17 Legacy (Jumper MUST be on both pins as shown in the picture to the right) ▪...
Internal installation For internal installation of EM3, see the below picture of the electrical cabinet in the heat pump for correct placement. Follow the instructions in the chapter regarding connecting power supply and Modbus communication to set up EM3 with the BM-card.
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Installation Guide Expansion Module 3 (EM3) 3.3.1 Enclosure The enclosure can be mounted to the wall by putting the screws through the back plane of the enclosure (marked positions inside the enclosure) or by using the mounting brackets on the corners of the enclosure.
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Installation Guide Expansion Module 3 (EM3) 1. Enclosure 2. Knock out panel 3. Sealing plug 4. Screw 5. Sealing plug for screw holes 6. Mounting bracket 7. Screw for mounting bracket If more than one enclosure is to be used for the installation it is possible to interconnect a number of enclosures with couplers (not included).
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B. Leave enough wire length to ensure tension free connections. 3. Fit the EM3 unit onto the plastic PCB spacer supports on the mounting plate and press down on the EM3 unit so that the spacer supports locks on to the circuit board. Secure the EM3 unit to the mounting plate with the two screws.
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Expansion Module 3 (EM3) 4. The function switch in the center of the EM3 unit is by default set to the 0 (zero) position and the jumper switch to the right of it is set to open position (jumper is not mounted on both pins).
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EM3-TWC/WCS EM3-Cooling EM3-Pool EM3-Legacy 1 EM3-Legacy 2 Termination Termination Locate the termination jumper on the EM3-card from the below picture: The jumper is activated on the EM3-card 0-10 The jumper is NOT activated on the EM3-card 24AC 0-10 24AC 0-10...
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Installation Guide Expansion Module 3 (EM3) Table item number Terminal Description FR61 Circulation pump (HWC) Sensor HWC return line Sensor hot water AO71 Mixing valve HW Auxiliary heater hot gas boiler Tank sensor TWC (hot gas boiler) TR65 Reversing valve hot gas boiler TWC - Tap Water Control The TWC function regulates the temperature in the end tank and the outgoing hot water (mixing valve (75) is required).
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Installation Guide Expansion Module 3 (EM3) 5. Make desired settings and save 6. Restart the heat pump and check functionality TWC - Antilegionella With the TWC the antilegionella function is scheduled to activate the auxiliary heater in the end tank, whenever the demand for antile- gionella is active.
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Installation Guide Expansion Module 3 (EM3) Table item number Terminal Description FR62 Circulation pump (WCS) Sensor (WCS) AO72 Control valve WCS External WCS start WCS - Water Charge System The WCS function controls the hot water tank charge temperature by regulating the return line temperature (54) when hot water pro- duction is active.
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Installation Guide Expansion Module 3 (EM3) WCS and TWC Table item number Terminal Description FR61 Circulation pump (HWC) FR62 Circulation pump (WCS) Sensor external brine in Sensor external brine out Sensor (WCS) Sensor HWC return line Sensor hot water AO72...
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Installation Guide Expansion Module 3 (EM3) This function is used to charging hot water via the hot gas circuit into an end tank when ordinary hot water production is not active. The hot gas circuit will charge the end tank as long as the temperature in the end tank has not reached the maximum allowed temperature (adjustable in the display).
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Installation Guide Expansion Module 3 (EM3) Distribution circuits with cooling functionality With Distribution circuits 2-5 there is also possible to control a temperature sensor (108), a circulation pump (109) and shunt valve (107) for cooling. The shunt then regulates towards a fixed temperature (can be adjusted in the display).
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Installation Guide Expansion Module 3 (EM3) 4.1.3 Function ID: 3, DC 4-5 For system solutions and setup, see Distribution circuit 2-3 Table item number Terminal Description TR65 Reversing valve cooling mode (distribution circuit 4) TR66 Reversing valve cooling mode (distribution circuit 5)
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Installation Guide Expansion Module 3 (EM3) Table item number Terminal Description FR61 Circulation pump (cooling circuit) FR62 Circulation pump (heat dump) Return line sensor cooling tank Supply line sensor cooling circuit Sensor cooling tank Return line sensor heat dump AO71...
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Installation Guide Expansion Module 3 (EM3) Cooling (passive/active) With the Passive/active cooling function, the heat pump can control and produce passive cooling when the brine temperatures are suffi- ciently low, but also actively use the compressor to produce active cooling (and dump excess heat to brine or a surplus chiller if no other heat demand is active.
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Installation Guide Expansion Module 3 (EM3) 4.1.5 Function ID: 5, Pool Pool solution 1 0-10 24AC 0-10 24AC 0-10 24AC 24AC 2 3 GND D95 D96 T81 T82 T83 T84 T85 T86 T87 Thermia AB ACEM301IG0502...
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Installation Guide Expansion Module 3 (EM3) Table item number Terminal Description FR61 Circulation pump (pool) Sensor pool TR65 Reversing valve pool Supply line sensor pool AO71 Shunt pool circuit External pool off The purpose of this function is to control and maintain a constant temperature for swimming pool or similar.
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Installation Guide Expansion Module 3 (EM3) Pool time: Max pool time when other conflicting demands arises (such as heating/hot water demands), in heating season max 3,5 hours. Gear shift delay: Delay time for changing compressor speed. Commission after installation: 1. Login: Press padlock, 607080 and confirm 2.
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Reversing valve individual pool (186). This valve should NOT be connected to the EM3 card, but instead to the internal BM card to terminal TR9, in order for the heat pump(s) to produce pool heat- ing individually (the primary heat pump, as well as one or more secondary heat pumps, can be set up to control the individual pool heating as long as they meet these criteria).
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Installation Guide Expansion Module 3 (EM3) 4.1.6 Function ID: 10-17, Legacy Example on how to structure Primary/Secondary installations: 0-10 0-10 0-10 24AC EM3:11 24AC EM3:12 24AC EM3:10 0-10 0-10 0-10 24AC 24AC 24AC 0-10 0-10 0-10 24AC 24AC 24AC 24AC...
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Installation Guide Expansion Module 3 (EM3) Table item number Terminal Description TR65 Reversing valve hot water (Legacy 1) TR66 Reversing valve hot water (Legacy 2) Start signal (Legacy 1) Start signal (Legacy 2) Alarm relay (Legacy 1) Alarm relay (Legacy 2)
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It is possible to control two external heat pumps per EM3 and up to 16 units in total (8 EM3). When using more than two external units (for instance heat pump 3 and 4) two EM3 are required to control the units, ID 10 on the first and ID 11 on the second.
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In applications where e.g. cooling is achieved by a separate system (not controlled by the heat pump), the internal brine pump can be activated (345) on external command using EM3:1-5, not available with EM3:10-16 (Legacy). The digital in (open/closed loop) will then activate the internal brine pump when required.
Requires two sensors connected to brine in (48) and brine out (49). Output (0-10V) is connected to AO73 (172). If an on/off signal is required, use relay R52 on EM3 for potential free signal or FR4 on BM for 230V signal.
Installation Guide Expansion Module 3 (EM3) Wiring diagram Table item number The following number/note are used for the heat pump. Which number/note are used depends on the heat pump model. Number/Note Description Number/Note Description Circulation pump (HWC) Auxiliary heater (anti-legionella)
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PCB. Fore more in- DI 1 formation about communication card con- DI 2 nections, see following page. DI 3 *Note 33 15kW immersion heater is optional DI 4 *Note 34 Works only together with EM3-card Spare ACEM301IG0502 Thermia AB...
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Internet: www.thermia.com Thermia can accept no responsibility for possible errors in catalogues, brochures and other printed material. Thermia reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies.
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Do you have a question about the EM3 and is the answer not in the manual?
Questions and answers