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Powrmatic HEM-NVx Series, User, Installation & Servicing Manual, Page: 19 / 44

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Powrmatic HEM-NVx Series User, Installation & Servicing Manual Download Page 19

page no. 19 of 44

HEMNVx & HEMSL Range  Users, Installation & Servicing Instructions  Doc Ref M103 issue 3.6 Mar 2020. 

Exhaust 

Header Box

Upper 

Burner Set

Lower 

Burner Set

Exhaust Fan

Exhaust Fan Flow 

Sensing Point

Gas Valves

Gas Inlet

Controls 

Panel

Upper Spark 

Ignition Probe

Probe

Limit

Thermostat

Sequence 

Controllers

Exhaust Fan 

APS

Incoming 

Electrical

Connection

Point

Limit

Indicators

Lockout

Indicators

Fuses

Burner Set

(behind Heat Shield)

Exhaust Fan

Exhaust 

Header Box

Spark Ignition 

Probe

Gas Valv

 

Inlet

Control

Panel

Exhaust Fan 

Flow Sensing 

Point

Sequence 

Controller

Exhaust Fan 

APS

Limit

Thermostat

Limit

Indicator

Lockout

Indicator

Fuse

e

Gas 

Incoming 

Electrical

Connection

Point

Modulating 

Interface 

Board

(where fitted)

Modulating 

Interface 

Board

(where fitted)

Summary of Contents for HEM-NVx Series

Page 1: ...w w w p o w r m a t i c c o u k HEM User Installation Servicing Manual Issue 3 6 Mar 2020 Doc Ref M103 Issue 3 6 Mar 2020 ErP COMPLIANT S E P T E M B E R 2 0 1 8 NVx SL...

Page 2: ...1 The heater must have been installed by a competent qualified installer and in accordance with the manufacturer s instructions building regulations and local regulations 2 The heater has been profes...

Page 3: ...fication of Items 19 2 3 Electrical Cable Installation 20 2 4 Wiring Terminal Connections 20 2 5 Wiring Diagrams 22 2 6 Commissioning and Testing 26 2 7 Servicing 30 Additional Documents 3 1 Fault Fin...

Page 4: ...Unless the cause of the fault condition is readily obvious for example a power cut whilst the heater was operating a service engineer should be contacted E Maintenance To maintain efficient reliable...

Page 5: ...as Group H G20 Appliance Categories are Cat II2H GB IE All units are CE certified and conform to all the European directives stated in section 1 3 1 HEM heaters are based on aluminised mild steel tube...

Page 6: ...mp Rise t C 35 Air Off Max C 70 Airflow Min Airflow m3 s 0 34 0 44 0 58 0 71 0 86 1 01 1 55 1 94 2 28 2 78 2 99 3 39 4 14 4 67 Min Airflow P Pa 43 26 45 32 47 31 59 67 59 54 43 43 47 45 Electrics V ph...

Page 7: ...low P Pa 16 17 20 18 21 15 19 22 19 19 20 21 Electrics V ph Hz 1N 230V 50 Current A 0 30 0 90 3 50 Power kW 0 07 0 21 0 80 Fuel Natural Gas Connection BSP Rc 1 1 Minimum Inlet Pressure mbar 20 Rate m3...

Page 8: ...0 15840 16920 18000 19080 20160 21240 22320 22320 23400 24480 25560 26640 27720 28800 29880 29880 30960 32040 33120 34200 35280 36360 37440 37440 38520 39600 40680 41760 42840 43920 45000 45000 46080...

Page 9: ...0 13680 15120 16560 18000 19440 20880 20880 22320 23760 25200 26640 28080 29520 30960 30960 32400 33840 35280 36720 38160 39600 41040 41040 42480 43920 45360 46800 48240 49680 51120 51120 52560 54000...

Page 10: ...HEMNVx 125 15 9 6 2 54 750 10 8 13 4 5 0 9 2 HEMNVx 150 18 9 9 2 54 750 10 5 16 3 4 6 10 6 HEMNVx 175 21 12 9 2 54 750 11 0 18 4 5 0 13 3 Injector Sizes Burner Pressures Natural Gas Group H G20 Net CV...

Page 11: ...HEMNVx 110 13 109 9 98 0 75 0 66 0 3 0 10750 145 21 HEMNVx 125 15 126 4 112 0 86 5 76 5 3 4 12200 168 25 HEMNVx 150 18 153 9 134 9 100 2 78 8 4 1 14900 195 30 HEMNVx 175 21 174 0 154 4 125 7 112 8 4 7...

Page 12: ...ing should be consulted at the installation planning stage in order to establish the availability of an adequate supply of gas to suit the building requirements An existing service pipe must not be us...

Page 13: ...supply of air is necessary 1 3 4 3 Type C flued installations Where AHU s are installed in a plant room ie not within the heated space having g combustion air ducted to the appliance and combustion pr...

Page 14: ...19 8 439 6 219 8 1099 0 1099 0 549 5 549 5 HEMNVx 125 15 126 4 252 8 505 6 252 8 2528 0 2528 0 1264 0 1264 0 HEMNVx 150 18 153 9 307 8 615 6 307 8 n a HEMNVx 175 21 174 0 348 0 696 0 348 0 Type B22 In...

Page 15: ...or external units please note The lowest edge of air inlets must be at least 500 mm above ground level Access panels and doors to be removed during normal servicing shall be designed so that repeated...

Page 16: ...4 181 142 150 18 1347 204 181 142 175 21 1554 204 181 142 A B HORIZONTAL FLUE POSITION D HOLE FOR FLUE SEAL C A B HORIZONTAL FLUE POSITION D HOLE FOR FLUE SEAL C HORIZONTAL FLUE POSITION D HOLE FOR FL...

Page 17: ...uld be cut to the dimensions in the following table to accept the silicone seals supplied where D is the actual cut size in the casing sheet metal Type C Flue and air inlet cut hole sizes and centres...

Page 18: ...ttings in which case ensure that the dimensions shown are adhered to The trap must be filled with water after installation and before the heater is commissioned The trap and associated pipe work must...

Page 19: ...ing Electrical Connection Point Limit Indicators Lockout Indicators Fuses Burner Set behind Heat Shield Exhaust Fan Exhaust Header Box Spark Ignition Probe Gas Valv Inlet Control Panel Exhaust Fan Flo...

Page 20: ...eater s via a suitable fused isolator that will prevent remote activation of the heater during servicing see section 1 2 for ratings be in a readily accessible position adjacent to the heater s serve...

Page 21: ...ication 230V Output Lockout 1 Reset Neutral Input Main fan Proving Switch suppled by others Modulating Ground 0V Lockout 2 Indication 230V Output Lockout 2 Reset Neutral Input t3 t10 t8 t9 t4 t5 t6 t7...

Page 22: ...Internal Lockout Reset Button J Hylec Terminal Block 3 Way K Terminal Block L Ignition Electrode M Rectification Probe N O P Heat Demand 230V Input Heat Hi Demand 230V Input Lockout 1 Indicator 230v...

Page 23: ...K Terminal Block L Ignition Electrode M Rectification Probe N O P Br 0 5 Blu 0 5 Blu 0 5 Br 0 5 Blu 0 5 Br 0 5 Wiring Legend Heat Demand 230V Input Heat Hi Demand 230V Input Lockout 1 Indicator 230v...

Page 24: ...E E E N N N N 1 1 3 3 4 4 5 5 6 6 10 10 11 11 12 12 15 15 16 16 9 9 7 8 NC NO C 2 3 1 LIVE NEUTRAL EARTH Br 0 5 Br 0 5 Blu 0 5 Blu 0 5 Blu 0 5 Blk 0 5 Red 0 5 Yel 0 5 Wh 0 5 Br 0 5 Br 0 5 Blu 0 5 Wh...

Page 25: ...ch Supplied by Others Br 0 5 Br 0 5 Blu 0 5 Or 0 5 Yel 0 5 Or 0 5 External Controls Connections 1 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 13 14 15 J5 CON6 J6 CON5 JT2 JT1 1 1 1 Blu 0 5 1 2 3 4 5 6 7 8 9...

Page 26: ...Ensure the external control BMS is set to winter operation 1 Ensure that the gas service valve is closed 2 Switch on the electrical supply at the isolator and the ignition sequence will commence Afte...

Page 27: ...6 1 1 1 SIT Sigma 843 Adjustment Adjustment nut 10mm for maximum pressure setting Cap Adjustment screw for minimum pressure setting Maximum Setting With the controls set to high fire use an adjustable...

Page 28: ...res proceed as follows after removing the plastic cover from the Modulating regulator Note Minimum fire setting must be adjusted first after which the high fire setting can be set Any adjustment of th...

Page 29: ...V7335A is controlled by P1 varying between 50 and 100 of the input signal E g When P1 is set at 100 fully clockwise maximum power 165mA 22VDC is provided to the modulation coil with a 10VDC input con...

Page 30: ...vicing work has been complete or any component replaced the air heater s must be fully commissioned and tested for soundness as described in Section 2 6 2 6 Commissioning and Testing 2 6 6 2 Final Adj...

Page 31: ...electrode is located at the top of the burner assembly Inspect the electrodes making sure that they are in a sound and clean condition In particular check that the ignition electrode is clean and und...

Page 32: ...ssembly to the burner assembly side plate and withdraw the assembly 3 Fit replacement and reassemble in reverse order Check that the spark gap is 2 5mm See section 2 7 3 and the rectification electrod...

Page 33: ...gas supply is ON Exhaust fan runs continuously Electrical 1 Check overrun thermostat 3 1 Fault Finding 3 Whilst supporting the fan motor remove the three screws securing the fan motor mounting plate t...

Page 34: ...2 Rectification Flame Sensor Probe All 142423003 Burner All 142400240 Limit Thermostat All 142403611 Control Box Sequence Controller All High Low All Modulation 145030846 145030847 High Low Governor H...

Page 35: ...Switch HUBA 604 All 142522177 Exhaust Fan 10 50 140210496 Exhaust Fan 60 75 140201505 Exhaust Fan 100 140210499 Exhaust Fan 110 150 140201503 Exhaust Fan 175 140201502 Exhaust Fan 200 140201507 Brahma...

Page 36: ...eat Capacity kW 66 0 76 5 78 8 112 8 Gross Efficiency High Fire 80 0 80 0 79 0 80 0 Low Fire 81 0 80 0 81 0 82 0 Nett Efficiency High Fire 88 8 88 8 87 7 88 8 Low Fire 89 9 88 8 89 9 91 0 Seasonal Eff...

Page 37: ...nt 125 16 150 18 175 21 200 24 Rated Heat Capacity kW 116 7 135 7 160 8 178 3 Minimum Heat Capacity kW 70 5 79 9 82 6 108 3 Gross Efficiency High Fire 82 0 80 0 79 0 78 0 Low Fire 83 0 80 0 84 0 81 0...

Page 38: ...o be extended to a point where it has clearance from windows doors The following notes and sketches refer to Fluing Combustion Air and Ventilation requirements for modules fitted as stand alone applic...

Page 39: ...thin a secondary housing ahu etc Internal location HEM SL HEM NVx within open space ie not plant room Single module c w Powrmatic burner enclosure Combustion air to Powrmatic burner enclosure via Powr...

Page 40: ...Internal location HEM SL HEM NVx within a plant room as defined by BS6230 Single module c w Powrmatic burner enclosure Combustion air ventilation requirements in accordance with BS6230 Plant room vent...

Page 41: ...page no 41 of 44 HEMNVx HEMSL Range Users Installation Servicing Instructions Doc Ref M103 issue 3 6 Mar 2020 Notes...

Page 42: ...page no 42 of 44 HEMNVx HEMSL Range Users Installation Servicing Instructions Doc Ref M103 issue 3 6 Mar 2020 Notes...

Page 43: ...page no 43 of 44 HEMNVx HEMSL Range Users Installation Servicing Instructions Doc Ref M103 issue 3 6 Mar 2020 Notes...

Page 44: ...laght Dublin 24 tel 353 0 1452 1533 fax 353 0 1452 1764 e mail info powrmatic ie web www powrmatic ie Getting In Touch Powrmatic pursues a policy of continues improvement in both design and performanc...

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