Walter Wilson HYDRA Series, Installation Instructions And Homeowner'S Manual

TABLE OF CONTENTS 

1 INSTALLATION ................................................................................................................. p. 3 

 
 1.1) SAFETY 

LABELING AND WARNING SIGNS...........................................................................................p. 3 

 1.2) IMPORTANT INFORMATION ....................................................................................................................p. 3 
 1.3) DANGER 

OF FREEZING ...........................................................................................................................p. 3 

 1.4) HEATING 

WITH HOT WATER...................................................................................................................p. 3 

 1.5) DELIVERY...................................................................................................................................................p. 4 
 1.6) INSTALLATION...........................................................................................................................................p. 4 
 1.7) DISTRIBUTION SYSTEM ..........................................................................................................................p. 4 
 1.8) INSTALLATION OF THE BOILER .............................................................................................................p. 4 
 1.9) ELECTRIC POWER SUPPLY....................................................................................................................p. 5 
 

2 OPERATION ........................................................................................................................... p. 6 
 

 2.1) ADJUSTMENTS AND START-UP.............................................................................................................p. 6 
 2.2) CHECKING 

THE CONTROLS ...................................................................................................................p. 6 

 2.3) BCEH 

DUAL-ENERGY INSTALLATION ...................................................................................................p. 7 

3 MAINTENANCE...................................................................................................................... p. 8 

4 INFORMATION ....................................................................................................................... p. 8 

TABLES AND FIGURES 

 
TABLE 1 – MINIMUM CLEARANCE ............................................................................................................................p. 4 
TABLE 2 – DIP SWITCHES POSITION .......................................................................................................................p. 6 
TABLE 3 – TECHNICAL SPECIFICATIONS..............................................................................................................p. 10 
 
 
FIGURE 1 – HYDRA ELECTRONIC BOARD ..............................................................................................................p. 6 
FIGURE 2 – BOILER WATER TEMPERATURE VARIATION ACCORDING TO OUTDOOR TEMPERATURE .....p. 9 
FIGURE 3 – COMPONENT IDENTIFICATION..........................................................................................................p. 11 
FIGURE 4 – TYPICAL DIAGRAM OF A SINGLE ZONE INSTALLATION................................................................p. 12 
FIGURE 5 – ELECTRICAL DIAGRAM .......................................................................................................................p. 13 
FIGURE 6 – LADDER DIAGRAM ...............................................................................................................................p. 14 
FIGURE 7 – TYPICAL DIAGRAM OF A DUAL-ENERGY INSTALLATION WITHOUT 3-WAY VALVE .................p. 15 
FIGURE 8 – TYPICAL DIAGRAM OF A DUAL-ENERGY INSTALLATION WITH 3-WAY VALVE .........................p. 16 
 
 
EXPLODED VIEW OF COMPONENTS AND PARTS LIST ................................................................................ p. 18-19 

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