Contents H - McCallum Water Heating

1 HTHE WHEPUMTHESHT-Breeze pages 2-71 HEATINGTHE WORLD'S WATERWhen space is tight and hot Water needs to becarefully controlled, that s when the new HT-Breeze range of plate heat exchangers comesinto its own. Thirteen outputs, 0 25 to 5 00litres/second, all on the same compact 340mmx 750mm standard features mean the new HT-Breezegives even better control of hot Water to the time, temperature and pump controlsetting, the new Breeze offers: Automatic night set-back plus ananti-legionella pasteurisation cycle. Remote operating temperature display. Remote adjustment of set points. Full BMS compatibility. 3 or 4 port valve stand alone , or with a buffer vessel, thenew HT-Breeze can provide flexible hot watergeneration for large and small projects, whethernew or 8-11 Plate heat exchangers provide a fast reacting and variable response to hot Water demands, especiallywhen those demands can change in seconds from, say, a single tap to a multiple shower operation.

2 The new Vari-E-breeze combines our plate exchanger expertise with the variable speed technology of theGrundfos MAGNA pump, giving closer control of output, greater speed of response and therefore,enhanced energy efficiency and lower running new Vari-E-breeze range is available in outputs from 0 25 l/sec to 4 0 l/sec. In addition to the time,temperature and pump control setting, the standard Breeze controller offers an automatic night set-back plus ananti-legionella pasteurisation cycle, retransmission of Water temperature, remote set point adjustment andBMS compatibility, with single or twin head variable speed 12-15 Connecting into an existing steammain to provide Heating or hotwater is made easier and quickerwith the introduction of Rycroft snew Steam-Breeze.

3 The stainlesssteel plate exchanger package canmake the interface of steam toDHW or LTHW standard range of units provides for heat loads of up , which in DHW service will provide a 5 l/sec flow. Largerloads can be accommodated by using Rycroft s bespoke design andbuild capability. Control of the primary side of the Steam-Breeze can be by electricor pneumatic valves, selected to provide accurate temperaturecontrol. Also included are isolation, anti-vacuum valves and linestrainer, independent failsafe (spring return). High limit protectionis provided as a standard feature on this range. A standard floattrap system is incorporated into the condensate side, and anadvanced three term (PID)

4 Controller within the panel providessecondary temperature standard units can be extended to incorporate additionalequipment such as secondary pumps, buffer storage, pressurereducing sets and specific valve arrangements, all controlledthrough the central Steam-Breeze has a relatively small footprint and is simple toinstall, requiring only the connection of electrical power or air,steam inlet and condensate outlet, with flow and returnconnections on the secondary units are also available for low and medium temperaturehot Water applications with fixed valve and pump control or withvariable pump (Vari-E-Breeze).ContentsDef 2 S T N A H Lo P PAdd S Bp Lo A NBen Idu H Rw Vex B S N Q Cd V C ERYC00003_BreezeBro 22/3/05 10:55 am Page 1 Combined Space/ Water Heating SystemsWhere the peak demand exceeds the available boiler power forwater Heating , installation techniques may resolve the example on a primary circuit, the HT-Breeze must be the firstpiece of equipment to be fed from the boiler.

5 Under peak demandconditions, the boiler power can be directed to the HT-Breeze atthe expense of the space Heating for installations where the boiler capacity is insufficientto meet the demand, a buffer vessel is connected in parallel withthe have developed a range of buffer vessels specificallydesigned to match the HT-Breeze. Both vented and unventedoptions are available and can be skid mounted to provide acomplete hot Water Features Large, clearly visible display of day, time, temperature andstatus. Process variable re-transmission. Remote set point adjustment. Remote enable/disable. Volt free change over fault contact.

6 Displayed alarm messages. Runs to default settings on start up. Bar graph valve output indication. Three term modulating control (PID). Time boost facility. Dual primary pump (duty/standby plus auto change over) shuntand secondary re-circulation pump Instantaneous Water HeatersTHE HT-BREEZE INSTANTANEOUS Water HEATER PROVIDES AN ECONOMIC AND EASY TO USE SOLUTION FOR PROVIDING HOT THE PACKAGE IS INSTALLED AND SWITCHED ON, THE SIMPLE TO USE CONTROLLER WILL RUN THE APPROPRIATE NUMBER OFPUMPS AND CONTROL AT 60 C. THE FACTORY DEFAULT SETTINGS WILL SUIT 95% OF APPLICATIONS WITHOUT FURTHER DEFAULT SETTINGS ARE FREELY ADJUSTABLE AND ARE AS WORLD'S WATER21.

7 Day/Mode Display2. Time/Alarm Display3. Temperature/Parameter Display4. High Temperature AlarmIndicator5. Reset Pushbutton6. Step Left Pushbutton7. Value Increase Pushbutton8. Step Right Decrease Pushbutton10. Mode Select Pushbutton11. Pump Energised Indicator12. Power On / Standby Indicator13. System Healthy Indicator14. System Fault Indicator15. Valve Position Bar Display16. On/Off Switch12345151311810967161412theerennd-1 5onttoethDefault Settings 24-Hour Operation. Set Temperature. Time Display. Number of pumps fitted. Auto pump changeover on a timed basis. High temperature cut out (manual reset). Low temperature alarm. PID settings. Pump run on Settings Seven day calendar (two timed periods per day).

8 Boost facility to activate the heater when in an OFF timedperiod. Low temperature boost facility. Actuator output curve and speed adjustment. Night setback and pasteurisation Ideal for retrofit applications where access is limited orupgrading of existing calorifiers is required. Hot Water produced as required. Reduce the risk from legionnaires disease by reducing the hotwater storage requirements. Very compact design utilising the benefits of plate heatexchangers. Building Management System compatibility. Small area required for servicing. Negligible standing losses. Quick heat up and rapid response. Can be designed to be extended for future changes indemand.

9 Vented and unvented applications. Complete packaged unit ready for immediate use. Electrically self protecting 22/3/05 10:55 am Page 2 SiTo sFacHosHotResSchSpoBarResUniOffiFactApaS iziCareof dis tosporinforThe this This whilIt is ExaUsin42 S55 P9 Pu3 Slo15 BThe Sizi3 HEATINGTHE WORLD'S WATERThe HT-Breeze comprises of a Supapac Plate Heat Exchanger,either a 3-port or 4-port control valve, primary pump, temperaturesensor and PID controller all mounted on a skid motorised 3 or 4 port control valve allows rapid adjustment of the primary heat input to match changes in secondary hotwater HT-Breeze requires no insulation and the design ensures thatthe outlet temperature does not fall below the set point (60 Cdefault but can be adjusted to suit customer requirements)

10 Andconsequently reduces the risk of legionnaires the class of accommodation and details of the numberand type of fixtures are known, Rycroft will be pleased torecommend the optimum size of PORT VALVEPHESECONDARYOUTLETPRIMARYRETURNCONT ROLSTATSECONDARYINLETPHE4 PORT VALVEO perationSchematic DiagramCOMMISSIONINGVALVECONTROLSENSORCO LD FEEDPRIMARYRETURNPRIMARYFLOWSECONDARY FLOWSECONDARYRETURNEXPANSIONVESSELSECOND ARYSHUNT PUMPBUFFERVESSELDRAINPLUGLOCKSHIELDVALVE EXPANSIONRELIEFVALVEDRAINNON-RETURNVALVE CONTROLPANELPRESSURE/TEMPRELIEF VALVETEMPERATURE GAUGEPRESSURE GAUGEHT BREEZEUNITSECONDARYINLETCIRCULATINGPUMPT ypical Schematic for Unvented HT-Breeze/Buffer ApplicationRYC00003_BreezeBro 22/3/05 10.