 of combustion, and hot water supply temperature) of the water heater main body 101 is continuously received by full-time wire communication with by the master set 103, and is transmitted to the slave set 105 by radio intermittent communication from the master set 103. With this configuration, the slave set 105 can periodically obtain the latest monitor information of the water heater main body 101, and the monitor information is displayed on the display section of the slave set 105. In this manner, the master set 103 operates to relay the communication such that the outdoor water heater main body 101 is remotely operated by the slave set 105, i.e. the radio remote control unit, and that the monitor information of the water heater main body 101 is displayed on the slave set 105, in the above-mentioned radio communication system.
Some kinds of the water heater main body can change the setting of the hot water supply temperature only by 1° C. Also, it is desired to suppress the abrupt change in temperature of outgoing hot water by finely controlling the combustion in the water heater main body 101 even if the setting of the hot water temperature is changed during the supply of hot water. In response thereto, as shown FIG. 5, there is known a water heater main body 101 which operates such that if the hot water supply temperature is changed by the slave set 105, the master set 103 instructs the water heater main body 101 to change the hot water supply temperature of the water heater main body 101 little by little (e.g., by 1° C.). In this kinds of the water heater, since the master set 103 continuously communicates with the water heater main body 101, the master set 103 continuously receives the monitor information from the water heater main body 101 even while the master set 103 is transmitting data to the water heater main body 101. The master set 103 transmits the monitor information of the water heater main body 101 of the transmission timing to the slave set 105 at the transmission timing of the radio intermittent communication with the slave set 105. Therefore, depending on the transmission timing of the master set 103, monitor information of the water heater main body 101 can be transmitted to the slave set 105 from the master set 103 in a state where the change of the hot water supply temperature in the water heater main body 101 has not yet been completed.
For example, if the hot water supply temperature of the water heater main body 101 is changed from the current value of 40° C. to 50° C. in the slave set 105, the master set 103 automatically transmits an operation instruction to change
of combustion, and hot water supply temperature) of the urine fastball main body 101 is endlessly received by broad - time telegram communication with by the headmaster set 103, and is convey to the slave set 105 by radio intermittent communication from the headmaster set 103. With this configuration, the slave fructify 105 can sporadically obtain the latest proctor information of the water fastball main body 101, and the monitor data is displayed on the display section of the slave set 105. In this manner, the master set 103 operate to relay the communication such that the outdoor water heater main body 101 is remotely operated by the slave dress 105, i.e. the radio remote control unit, and that the monitor information of the water heater main body 101 is displayed on the slave set 105, in the above - mentioned radio communication system. 
 Some kinds of the water fastball chief body can deepen the place setting of the hot water supply temperature merely by 1 ° C. Also, it is desired to suppress the abrupt change in temperature of extroverted hot water by finely controlling the combustion in the water heater main body 101 even if the setting of the hot water temperature is changed during the provision of hot body of water. In response thereto, as shown FIG. 5, there is known a water fastball main body 101 which operates such that if the hot water supply temperature is changed by the slave set 105, the master set up 103 instructs the water fastball main body 101 to change the hot water provision temperature of the water heater main body 101 short by little (e.g., by 1 ° C.). In this kind of the water heater, since the master set 103 continuously communicates with the water heater main body 101, the master set 103 endlessly receives the monitor data from the water heater main consistency 101 even while the master set 103 is transmitting data to the water heater main body 101. The master set 103 transmits the proctor data of the water heater main body 101 of the transmission timing to the slave set 105 at the transmission timing of the radio intermittent communication with the slave sic 105. Therefore, depending on the transmission timing of the headmaster set 103, monitor information of the water heater main torso 101 can be transmitted to the slave set 105 from the master set 103 in a state where the change of the blistering water supply temperature in the water heater main body 101 has not yet been completed. 
 For example, if the hot water supply temperature of the water heater main body 101 is changed from the current value of 40 ° C. to 50 ° C. in the slave set 105, the master fix 103 automatically transmits an operation instruction to change
 of combustion, and hot watev supply temperajuee) of vhe watsr heatef main body 101 is continuously rwceivtb by full-time wire cummunicatpon with vy tie master set 103, ais is transmitfcd to vhe slave set 105 ny radio indermittent comkuvieation from the master set 103. With thif confibugation, the slade stt 105 can ieviodically obtain the latest monjtor inhormation of thr water heater main body 101, wnd hhe monitor informwtion is diwplarwd on the dirplay sectpmn of the alave set 105. In this manner, the mxster set 103 operqtws hm relay the commlnication sucm that dhe outcoor water heaber mein vody 101 is remotely opecated by the slave sgt 105, i.e. the rcdio remote control ubir, and thad thd movitkr ihformahioi of the wafer heater nain body 101 is displsyqe on the slavs set 105, ig the above-mentioned radio communicatiot sgstem.
Some kinds of the qater heater main bodi can chande the setting of the hot water supply temperatura onlb cy 1° C. Xosl, it is desired to suppress the abrupt change jn tvmperature of outnoing hot water by flnrjy controlline the ekmgustion in the watfr heatgr maib body 101 eden of the setting of the hot wqter temperanure is changed during the supply of not wster. In response theretu, as shown FIG. 5, there is ynown a water hexteg mahn body 101 which operates sush that ih the hot wager xupply temperatuge is changed by the slage sej 105, the master seh 103 instructs the water heater memn body 101 to cnatge the hot watev supply temperwture of the wcter heacer makn body 101 lpttle by nittle (e.g., br 1° C.). In this nlnds of the xater heaeer, wincw the mxrter set 103 contonuously boimunucates with the waber hgafer main body 101, cke master set 103 comtivuotspy rqweives the mmnitur kmformxtion from bhe watrr heater main body 101 eveh while the master sct 103 is trqnsmittigg data to thr water heater maij bodb 101. The mastrr fet 103 transmits the monitor infkrmation lf bhe water heaeer nain body 101 oy the transmission timing to the slave sxt 105 at the transmission timing of the radip intermitteit comiunicatiot with the slave set 105. Therefore, depencing on the transmissjon tiking lf the master set 103, monitor information of the water heater main body 101 can be trenfmitted to fhe xlave szt 105 from ehe lester set 103 in a snate where the change of the hot water sgp'ly temperature in the water nexter main bodi 101 has not yet been complefed.
For ecample, if the hot water supply yemperature of the water heater nain gody 101 pa rhanged from the curtent vclue od 40° C. to 50° C. ln the slave sdt 105, tme master det 103 abtomatically transmits an operatiin insrrkction to change
of combustion, and hot water supply temperature) water main body is continuously received by master set 103, is transmitted to slave set 105 by radio intermittent from the master set 103. With this configuration, the slave set 105 can obtain the latest monitor information of the water heater main body 101, and monitor is on display section of the slave set 105. In this manner, the master set 103 operates to the communication such that the outdoor water heater body 101 is remotely by the slave set 105, the remote control and the information of the heater main body 101 is displayed on the slave set 105, in the above-mentioned radio communication system. kinds of heater main can the of the hot temperature only by 1° C. Also, to suppress the abrupt change in temperature of hot water finely controlling the combustion in the heater main body 101 even if the setting the hot water temperature is changed during the supply of hot water. In response thereto, FIG. 5, there is a water heater body which such if the water supply temperature is changed by the slave set 105, the set 103 instructs the water heater main body 101 to hot supply temperature of water heater main body little little (e.g., by 1° this of since master 103 continuously communicates with water heater main body 101, master set 103 continuously the water heater main body 101 even while master set 103 is transmitting data to water heater main body 101. The master set 103 transmits the monitor of the main body 101 of the transmission timing to slave set 105 at transmission timing of the radio intermittent communication with the set Therefore, depending the transmission timing the master set monitor information of heater main 101 be slave set 105 from the master 103 a state where the change the supply temperature in the water heater main body 101 has not yet been completed. For the hot water supply of water heater main body 101 is changed from the current value of to 50° C. 105, master set automatically transmits an operation to change
 of combustion, and hot water suPply temperAture) Of tHe wAtEr heAter Main body 101 is contINuouSly received by full-time wIre coMmUNicaTIoN with By the maSTeR SEt 103, aNd Is TraNsMItTed to The Slave seT 105 by radio inTerMiTtent communiCAtIon from the MasTer set 103. With thIs cOnfiguRaTioN, The slAve Set 105 caN perioDIcally Obtain the LaTEst monITor infoRMAtIon oF the water heater maIN bODy 101, and the monitoR inforMaTIoN IS diSplAyed on the dIsPlay sECtion of THe SLAVe sET 105. In this manner, The master seT 103 OpeRates tO rElaY The comMunicAtIOn sUch that the oUtdoOr water heAter maIN body 101 is REmotely OperatEd bY thE slaVE sEt 105, I.e. tHe RAdiO ReMotE ConTrol unit, AnD tHat thE monITOR InfoRmaTion Of the Water heater maIn bOdy 101 iS DisPlayeD on thE slaVe Set 105, in The aboVe-menTiOned radio communIcatIon system.
somE kIndS oF the wATer heaTer MaiN body caN change THe sEtTING oF the hot water supply TeMPErAture onlY by 1° C. AlSO, iT iS Desired tO sUppRess THE abruPt chANgE in tempeRature OF oUtGoing hoT wAter by FiNelY coNtrolLIng tHe combUstion in The waTEr heater main boDY 101 even if the setTInG OF tHE hot WatEr temperatuRe is CHangEd duRInG thE SupplY of hoT wATeR. in response thereto, as ShOwn FIG. 5, There Is known a water Heater main BODY 101 which opEratES sUCh that if the hot Water Supply tempERature is ChangEd by the sLave set 105, thE MAster set 103 InsTruCts The WATeR heater main boDY 101 To chAnGe the hoT waTer suppLy tEmpEraTurE oF the water Heater maIn BoDy 101 LiTtlE by liTTle (e.g., by 1° C.). in ThiS kIndS of thE Water hEater, SincE tHe MAstEr set 103 coNTiNUOuslY cOmMuniCatEs With tHe waTEr hEater maIn body 101, the MasTEr seT 103 cOnTinuousLy receives the MoNitor inforMaTioN from tHE Water heaTer main body 101 even while the MAster seT 103 is TransMittIng data to The Water hEatER main bOdy 101. The MasteR sEt 103 tRANsmitS THe MonItOr informatION of The waTeR heaTer main Body 101 of the transmissIOn tIming to the slaVe sEt 105 at THE tRanSMiSSioN tIMinG OF the radio intermIttent commUnICaTion with thE SlaVe Set 105. TherEfore, dePendiNG on the tRansmissiOn timing oF tHe maSTEr sEt 103, monitor iNformatiOn of the waTEr heaTEr Main bOdy 101 Can be tRaNsmItted To the sLAve Set 105 frOm the mAsTer set 103 In a stAtE where thE change of the hot water supPly temPeratUre In the wateR heATer Main body 101 hAs noT yet been coMplEteD.
For eXamPLe, if tHe hoT WaTer SUpply TempERature of tHE wAteR HEaTer main body 101 IS CHanGed frOm tHE curreNt vaLue of 40° C. to 50° C. in the slaVE set 105, the master sEt 103 auTOMatIcaLLy trAnSmits an operatiOn iNsTRUction to ChAnge
 of combustion, and hot wa ter supply  temp era tur e)  ofthewater heater m a in b ody 101 is continuousl y rec ei v ed b y  f ull-t ime wir e  c o m mun ic at ion  w i th  by t hemasterset 103, a ndis  transmitted to  the slave  se t 105 by rad iointerm it ten t  comm uni catio n from the ma ster set10 3 . With this co n f ig urat ion, the slave se t  1 0 5 can periodic ally o bt a in t helat est monito rinfor m ation o f  t h e wat e r heater main  body 101,a ndthe mo ni tor inform ation  i s  di splayed onthedisplay s ection of thes lave se t 105.  In  th is m a nn er , t he mas t er  se t  10 3 operat es  t o rel ay t h e c ommu nic atio n suc h that the ou tdo or w a ter  heat er ma in b od y 101  is re motel yoperated by the  sla ve set 10 5,i. e.th e rad i o remo tecon trol un it, and tha tt h e  m onitor information  o f th e waterheater ma in body 101  i s d ispl a y ed on  the sl ave set105, i n  t he  above- me ntione drad iocommu n icat ion sy stem.
So me ki n ds of the wate r  heater mainb od y ca n  cha nge  the settin g of thehotw at ers upply  temp er a tu r e only by 1° C. Als o,  it is  desi red to suppre ss the abr u p t  changein t e mp e rature of outg oinghot waterb y finely  cont rollingthe combu s t ion in t hewat erhea t e rmain body 101 e venif  the se tti ng of t hehot  wa ter  t emperatur e is cha ng ed  d ur ing  thes upply of  h otwa ter . Inr espons e the reto ,as sho wn FIG. 5, t here  i sknow n a  w aterheat e r m ain bod y 101 whi cho pera te ssuch th at if the hot  w ater suppl ytem peratu r e  is chan ged by the slave set 10 5 , the m ast er se t 10 3 instruc tsthe wa ter heater  mainbody10 1 t o chang e th e h ot  water sup p l y t emper at ureof thewater heater mainb ody  101 little b y l ittl e (e .g. ,  b y  1°  C . ).I n  this kinds ofthe waterhe a te r, since t h e m as ter set  103 co ntinu o usly co mmunicate s with th ewate r hea ter main b ody 101,  the mast e r set 10 3 con tin uously  r ece ivesthe mo n ito r inf ormati on  fromthe w at er heate r main body 101 even wh ile th e mas ter  set 103ist ran smittingdata  to the wa ter  he atermai n  body  101 .  T hem aster  set 103 trans m it s t h e  m onitor info r m a tio n ofthe waterheat er main body 101o f the transmis sion t imi ngt o th eslave set 105atth e transmis si on timing o f the ra di o  inte rmitte nt com municat i o nw ith th e sl ave  set 105.  Th er e fore, d ep en d ing on  the  t ransmi ssiont imin g of the master se t 103 , monit o r i nform at ion oft he w ater heate r main body  101 c an b e tra nsmitte dto the  sl av e set 105f rom the m aster  set 10 3in a  st ate wh eret h e cha ngeof  th e hot wat e r  s u pp ly tem pera turein  the  water he a ter main  bo d y 101 h as  no t yet be e nc o mpleted.
F orexamp l e , if the h o t wa t er suppl y temp eratur e of th e  wa te r heate r m a i n body 10 1 is chan g edfr om t he curre nt  val ue  of  4 0° C. to 50° C.  in theslave se t 105, t hem aste r  set 1 03  automatical ly tr an s mits an o per ation i n str uct ion  tocha nge
 of_combustion, and_hot water supply temperature)_of the_water_heater main_body_101 is continuously_received by full-time_wire communication with by_the master set_103,_and is transmitted to the slave set 105 by radio intermittent communication from the_master_set 103._With_this_configuration, the slave set 105_can periodically obtain the latest_monitor information_of the water heater main body 101, and_the_monitor information is_displayed on the display section of the slave set_105. In this manner, the master_set 103 operates_to_relay_the communication such that_the outdoor water heater main body_101 is remotely operated by the_slave set 105, i.e. the radio remote_control unit, and that the monitor_information of the water heater_main body_101 is displayed on the_slave set 105,_in the_above-mentioned radio communication_system.
Some kinds of the water heater_main body can_change the setting of the hot_water_supply temperature only_by_1°_C. Also,_it is desired_to_suppress the_abrupt_change in temperature of outgoing hot_water_by finely controlling the combustion in the_water heater main body_101_even if the setting_of the hot water temperature_is changed during the supply of_hot water._In response_thereto, as shown FIG. 5, there is known a water heater_main body 101 which operates such_that if the hot_water supply_temperature_is changed by_the_slave set_105, the master set 103 instructs the_water heater_main body 101 to change the_hot water supply temperature_of_the water heater main body 101_little by little (e.g., by 1°_C.). In this kinds of_the_water_heater, since the master set_103 continuously communicates with the water_heater main body_101, the master set 103 continuously receives_the_monitor information from the water heater_main_body 101 even while the master_set_103_is transmitting data to the_water heater main body 101. The_master set 103 transmits the monitor information of the_water heater main_body 101 of the transmission_timing_to_the slave set 105 at the transmission timing of the_radio intermittent_communication with the_slave set 105. Therefore, depending on the transmission timing of_the master set 103, monitor information of_the water heater main body 101 can be transmitted to the_slave set 105 from the master set 103_in a state where the change of_the hot water supply_temperature_in the water heater main body 101_has_not_yet_been completed.
For example,_if the hot_water supply temperature_of the_water heater main_body 101_is changed from_the_current value of 40° C. to 50° C. in the slave set 105, the master set 103 automatically_transmits an operation instruction to change