Maxitrol Selectra Bedienungsanleitung

Page 1 System Components

Page 2 & 3 Introduction and Dimensions

Page 4 Specications

Installation of Components

Typical Gas Trains

Page 5 Field Service Checklist

Page 6 Preliminary Circuit Analysis

Page 7 Wiring Diagrams

Sensitivity Adjustment

Low Fire Start Time Adjustment

Page 8 Temperature Calibration

Valve Adjustments

Table of ConTenTs

Series 44 Installation Instructions



SYSTEM COMPONENTS



A1044U



A1044U (replaces all A1044L1, suitable re-

placement forA1044 [C,D,E,H]) (includes 0,



A1044UF (replacement for A1044FL1)

A1044UG (replacement for A1044G[L1])













NOTE:-

ture Sensor must have same temperature





Sensors compatible with A1044U:











Sensors compatible with A1044UF:



Sensors compatible with A1044UG:



































speed blower or dual fuel operation)

NOTE: M (Modulator) valve requires an



-

tor) valve requires no upstream pressure



Selectrastat (Senses and Selects)





or optional pair to replace

Selectrastat

Space Temperature Selector









Space Temperature Sensor





NOTE: 

-

perature Sensor must have

same temperature range to be



INTRODUCTION AND DIMENSIONS





-



       





A discharge air temperature sensor (and mixing tube) is a means





wall mounted Selectrastat senses space temperature and has an





































Selectrastat, Temperature Selector, Space Temperature Sensor



 

without front dial)

SPECIFICATIONS

 (Maximum Fire)

 

 

   

Vent:



MR212-two vents located in upper housing, both equipped with





 

 



Optional:

Remote Temperature Selector:   

        

   Note:     



Remote Temperature Sensor:   

Remove cover to mount in area where representative space





   Control wires connected to the Selec-

     





so may cause the unit to function erratically or may destroy the





 Install in any convenient location that is protected from



Selectrastat: -











MR Valve: Modulator-

regulator valve

M Valve: Regulator upstream of

modulator valve



-







 Suitable for application in natural, manufactured, mixed

        











 

















SYMPTOM   REMEDY

     

 Continuous



 

 



 

           



             



 

 



 

 

 











 

 

            





       



 

 



 

 -





  





         









 Continuous Minimum









     











      











 













      



 

  

 

 Continuous









     



 

 

 Continuous





  

  



  -



pressure setting and pressure drop of the valve (See Maxitrol Capacity



-

tion of equipment manufacture



about possibility of using special spring to reduce pressure drop on selected





 









     





      







 



 



  



 Incorrect Space

Temperature





  







            











         















.



      

faulty components, improper wiring or calibration, and other





Note:      

Section I





     



    

  











Section II

         















If proper voltages are not observed, continue testing to identify







Section III

-

Note















Section IV

 -

sponding correctly, wire the system (see Figure 1 below),











       

  



If proper delivered air temperatures are observed, the prob-



      







Section V

-



Model A1044U

Model A1044

















 

and separate temperature selector

SENSITIVITY ADJUSTMENT



       





If hunting is encountered (rapid oscillation), rotating the sensitivity





-





-

able between 0, 10, or 20 seconds, and begins timing after the















Sensitivity







VALVE: Green









20 Second

10 Second

0 Second





Maxitrol Company











Note:

       







 

minimum temperature setting is at least ten degrees higher than









 

















       









Space Temperature





        

Because of the large space being heated, wait at least one half







        



































     

   







    









 



-







NOTE:





    

 







-









1 2



A B



(See bulletin M/MR_MT_EN for additional M/MR valve information)

NOTE:





A1044

VALVE: Green





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