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10 

 

PISCES 

MINIFILL 

12.1  First Fill and Setting to Work 

(cont’d) 

1) 

Open the Quarter Turn Isolation Valve on the underside of the Break Tank. 

MECHANICAL 

M1/1 

2) 

Vent The Pump. Located on the top of the center pipe connection of the pump assembly, is a vent valve.  Undo this vent 
valve with a Vent Key and release any air. When all the air has been released, securely close the vent valve. 

3) 

To  Check/Set  the  operation  of  the 

LOW  WATER  PRESSURE  ALARM 

Switch.  Turn  the  COLD  FILL  PRESSURE 

adjuster to the Minimum position (fully clockwise). Turn ON the Electrical Power Supply to the appliance, the PUMP  will 
operate  for  a  short  period  of  time.  Whilst  monitoring  the  appliance  Pressure  Gauge,  slowly  turn  the  COLD  FILL 
PRESSURE adjuster, clockwise, and the PUMP will operate to increase the pressure. Continue this procedure until  the 
appliance  pressure  gauge  is  recording  the  desired  water  pressure  required  for 

LOW  WATER  PRESSURE  ALARM 

activation.  Safely remove any Electrical Wires that has been connected to Terminals 1, 2 & 3, and make safe.   Connect 
a  Multi-meter  across  Terminals  1  &  2,  and  check  for  a  Closed  Circuit.  Using  the  LOW  WATER  PRESSURE  ALARM 
adjuster,  turn  the  adjustment  knob  ANTI-CLOCKWISE  to  increase,  and  CLOCKWISE  to  de-crease,  until  the  Circuit 
Closes at the pressure displayed on the appliance pressure gauge. 

Record the Pressure Setting on the  Commissioning 

Form on Page 12

. Re-connect any Electrical Wires previously removed from Terminals 1, 2 & 3. 

Factory Setting  Cut- 

Out 0.5 Bar, Cut-In 0.9bar (+/- 0.1 bar).

 

4) 

To  Check/Set  the  operation  of  the 

HIGH  WATER  PRESSURE  ALARM 

Switch.  Gradually  turn  the  COLD  FILL 

PRESSURE adjuster slowly towards the Maximum position (anti-clockwise). The PUMP will operate for a short period of 
time  with  every  adjustment.  Whilst  monitoring  the  appliance  Pressure  Gauge,  continue  to  slowly  turn  the  COLD  FILL 
PRESSURE adjuster (anti-clockwise) until the appliance pressure gauge is recording the desired water  pressure 
required for 

HIGH WATER PRESSURE ALARM 

activation. Safely remove any Electrical Wires that has been connected 

to Terminals 4, 5, & 6, and make safe.  Connect a Multi-meter across Terminals 5 & 6, and check for a Closed  Circuit. 
Using  the  HIGH  WATER  PRESSURE  ALARM  adjuster,  turn the  adjustment  knob  ANTI-CLOCKWISE  to  increase,  and 
CLOCKWISE to de-crease, until the Circuit Closes at the pressure displayed on the appliance pressure gauge. 

Record 

the Pressure Setting on the Commissioning Form on Page 12. 

Re-connect any Electrical Wires previously removed from 

Terminals 4, 5 & 6. 

Factory Setting Cut-Out 2.7 Bar, Cut-In 2.3bar (+/- 0.1 bar).

 

5) 

To  Set  the 

COLD  FILL  PRESSURE

,  firstly  turn  OFF  the  Electrical  Power  Supply  to  the  Appliance  and  connect  a 

small tube to the Drain Valve. Slowly loosen the bleed screw to drain water from the Drain Valve. Continue to drain the 
appliance  until  the  pressure  gauge  indicates  the  desired  COLD  FILL  PRESSURE.  Turn  the  COLD  FILL  PRESSURE 
adjuster to the minimum position (clockwise).  Turn ON the Electrical Power Supply to the appliance, the PUMP should 
not be running at this point. Gradually turn the COLD FILL PRESSURE adjuster until the PUMP turns ON. The  PUMP 
should continue to operate until a pressure increase of 0.4 bar has been detected and the PUMP should then turn  OFF. 

Record the Pressure Setting on the Commissioning Form on Page 12. Factory Setting Cut-In 1.4bar, Cut-Out 1.0  Bar 
(+/- 0.1 bar).

 

 

6) 

Open the Quarter Turn Isolation Valve on the Water Outlet (on the end of the Flexible Hose). The Pressure Gauge will 
now be recording the Current System Pressure (+/-  0.1 bar). 

Care should be taken to ensure the appliance is not 

exposed to a backpressure in excess of 3.0 bar from the Heating / Chilled Water System.

 

7) 

Open  a  drain  facility  on  the  system  (as  close  to  the  Pressurisation  Management  Unit  as  possible)  so  that  a  gradual 
pressure loss is achieved. Monitor the Pressure Gauge on the Appliance and check that the Pump Cuts-In/Cuts-Out to 
replenish  the  system  water  at  the  required  pressure,  as  set/recorded  in  Item  5  above.  Repeat  Item  5  if  the  pressure 
maintained is incorrect. 

8) 

Close the drain facility on the system, and check that the Pump Cuts-Out as required. 

 

13.0  Fault Diagnosis 

Should  a  problem  occur  with  the  operation  of  the  appliance,  the  following  procedures  should  be  referenced.  Further 

technical assistance is available from our MHS Boilers Technical Services Department, on 01268 546700, during normal office 
hours. 

  

 

Symptom 

Remedial Action

 

Pump Running, pressure not 
rising, but NO new water 
input into Break Tank 

 

Mains Cold Water Supply turned OFF. 

 

Quarter Turn Isolation Valve on the underside of the Break Tank 
closed / blocked. 

 

Quarter Turn Isolation Valve on the Water Outlet closed / blocked. 

 

Break Tank empty of water. 

 

Pump Assembly Air Locked. 

 

Non Return Valve on outlet of Pump Assembly blocked. 

  

•     

Pump Impeller Failure, replace Pump Assembly.  

 

Содержание M1/1

Страница 1: ...COMPACT WALL MOUNTED PRESSURISATION MANAGER INSTRUCTIONS FOR INSTALLATION SERVICING MAINTENANCE OF THE PISCES MINIFILL MODEL M1 1 Mechanical Single Pump Unit L250 M1 1 PISCES MINIFILL Mechanical Mode...

Страница 2: ...deemed to be competent This manual shall be handed to the unit user following completion of the installation The unit shall not be left to operate without being correctly commissioned Installation Req...

Страница 3: ...and maintain a system Cold Fill Pressure from as low as 0 8bar up to3 0bar The unit detailed in this manual utilizes a Type AF Air Gap and is therefore compatible for use with both Fluid Category 3 C...

Страница 4: ...associated fittings The Pisces Minifill unit cartoncontains Assembled and Tested Pisces Minifill unit Wall mounting bracket Supplied attached to the front of the water tank Installation Template part...

Страница 5: ...d clearances is printed onto the appliance packaging cut along the dotted lines and position the template in the desired location to ensure that all minimum clearances can beachieved The wall mounting...

Страница 6: ...the foul water system The Waste Water Outlet Overflow shall be routed in such a way to minimize the risk of blockage through freezing If any part of the Waste Water Outlet Overflow is to be run extern...

Страница 7: ...Base Earth Tag Front Door Earth Tag Rd Pp Pk Yw Or Gy Br Or Wh Bl Bk GY Bk Bk Scale Scale Scale Scale Cold Fill Pressure Switch Factory setting 1 0 bar High Pressure Alarm Switch Factory setting 2 5 b...

Страница 8: ...C to 115 C 2 0 Max Operating Temp 115 C to 120 C 11 1 Filling the System The Pisces Minifill Mechanical M1 1 pressurisation manager cannot be used to fill the system however the Pisces Minifill Elect...

Страница 9: ...arious safety items associated with the safe operation of the heating cooling chilled water system need to be checked and confirmed We would therefore recommend that a Qualified Gas Safe registered en...

Страница 10: ...ses at the pressure displayed on the appliance pressure gauge Record the Pressure Setting on the Commissioning Form on Page 12 Re connect any Electrical Wires previously removed from Terminals 4 5 6 F...

Страница 11: ...rrect operation and adjust replace as needed Check Setting of HIGH PRESSURE ALARM switch and adjust as needed 14 0 Internal Components Short Parts List Item No Description Part No Cold Fill Pressure S...

Страница 12: ...ty Valve Setting bar Final Working Pressure of System Hot bar High Pressure Alarm Switch Setting bar Low Pressure Alarm Switch Setting bar High Pressure Fault Test Yes No Low Pressure Fault Test Yes N...

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