Axiom Industries DMF150 Installation Manual

DMF Series Solution Feeder

Installation, Operation, & Maintenance Instructions

- Français page 11 -

Installation Procedure

1) Set system feeder on a secure and level base or on the provided wall bracket.

2) If mounting on the wall, the cardboard cut-out on the side of the DMF box may be used to locate the screw holes for the wall bracket.

3) Ensure the wall bracket is level and fastened securely to the wall.

4) HANG AND FILL TANK PRIOR TO MAKING SYSTEM CONNECTION. This helps to ensure that the tank is securely seated on the mounting bracket

Startup Procedure

1) Close isolation valve between feeder and system connection point

2) Fill reservoir, turn valve on feeder to mix/purge and plug in

3) Ensure pump is cycling fluid through reservoir (primed)

4) Simultaneously turn valve to run and open isolation valve to system

Scan the QR code to the left, search for Axiom Industries Ltd. on YouTube, or use the link below to view a list of instructional videos on the DMF series system feeders: https://www.youtube.com/watch?v=tmWsw0clEng&list=UU3IhT 10cEPKmm_S-HlGcbNw

3603 Burron Avenue, Saskatoon, SK S7P 0E4 Ph: (306) 651-1815 Fax: (306) 651-2293

email: sales@axiomind.com website: www.axiomind.com

DMF150 HYDRONIC SYSTEM FEEDER

INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS

The system feeder is used to maintain a minimum system pressure within a hydronic heating or cooling system. It should be used to pressurize the system while the system temperature is at its lowest.

Installation Instructions

1. Set system feeder on a secure and level base or on the provided wall bracket. If mounting on the wall,

the cardboard cut-out on the side of the DMF box may be used to locate the screw holes for the wall bracket. Ensure the wall bracket is level and fastened securely to the wall. HANG AND FILL

TANK PRIOR TO MAKING SYSTEM CONNECTION.

2. Connect the unit to the system using suitable hydronic piping. Ensure that there is a system isolation

valve installed to allow for isolation of the unit. DO NOT INSTALL A CHECK VALVE OR PRESSURE REGULATOR BETWEEN SOLUTION FEEDER AND SYSTEM.

3. Mount power supply and secure with mounting bracket. Do not power up system feeder until a

system connection is made, isolation valve is closed and feeder valve is set to mix.

4. To connect the system feeder to the RIA10-1-SAA alarm panel connect the blue and green wires

from the digital pressure controller to terminals 1 and 2 inside the Axiom RIA10-1-SAA alarm panel.

5. Install proper water/glycol mix in the tank to a level above minimum level indication on tank scale. A

30-50% Propylene Glycol mixture is recommended.

6. Close system isolation valve, turn feeder valve to vertical position (mix position).

7. Insert DC plug into the System Feeder first, and then plug power supply into 120v outlet. The red

LED in the power supply cord should light up. If it does not, check the power receptacle.

8. Once the pump is primed, turn the feeder valve handle to horizontal position (run position), open

system isolation valve and allow pump to pressurize system. If the system pressure is below the cut in pressure setting (approx.16 psi), the pump will start. The system feeder will run until the system is pressurized to approximately 18 psi and shut-off. It may cycle a number of times while system pressure stabilizes and while air is removed from the system.

9. If a higher fill pressure is required (up to 45 psi) the digital pressure controller may be adjusted by

pressing the up arrow to increase pressure and the down arrow to decrease pressure. The Pressure cannot be adjusted outside the high pressure (HiAL default = 26 psi) and low pressure (LoAL default = 10 psi) set point. The F2 alarm set points will need to be adjusted before a fill pressure can be set outside these set points. Please see the F2 function in the Adjusting the Digital Pressure Controller section on the following page.

Please note that the digital pressure read out may read differently from another gauge, which may be installed elsewhere in the system. This may be due to gauge calibration or differences in elevation within the system.

The system feeder does not require any scheduled maintenance. Should you wish to test pump operation, turn mix/purge valve to vertical position to start pump. Turning mix/purge valve handle back to the horizontal position will allow the pump to re-pressurize the system and then shut off.

Adjusting the Digital Pressure Controller on the DMF Series Solution Feeders

The pressure controller is factory set to start the pump at 16psi and shut off the pump at 18 psig. It can be field adjusted to a maximum of 45 psig. To quickly adjust the pressure set point, without changing the differential, press the up or down arrows on the front of the pressure controller.

Function Menu

The five functions of the digital pressure controller may be toggled through by pressing the button. Press and hold the

button for 3 seconds

below. The button moves you through the menu while the

arrow buttons are used to change the settings.

Symbol Description Operation

Pressure Settings

for Pump Operation

Pressure Settings for

Max Pump Operating

the Alarm

Pressure Setting

Pump Relay Test

(PTST)

Alarm Relay Test

(ATST)

to enter the function menu shown

F1-Hi–P (Pump cut-out set point)

F1-Lo-P (Pump cut-in set point)

Default: Hi-P = 18.0 psi. Low-P = 16.0 psi. Min. recommended differential 2psi

F2-H (HiAL) (high pressure alarm), Default HiAL = 26 psi

F2-L (LoAL) (low pressure alarm) Default LoAL = 10 psi

F2-r NO (normally open contacts) NC (normally closed contacts)

Sets the maximum pressure to which the pump Cut-out setting may be set

Default setting = 45 psi

This can be used to manually test the load relay (pump)

This can be used to test the alarm relay

to adjust the pump cut-out set point