Axiom Industries MF300 Installation Manual
INDUSTRIES LIMITED
Installation, Operation & Maintenance
Instructions for MF Series Solution Feeders
En Français Page 12
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) Turn valve to run and open isolation valve to system
2615 Wentz Avenue, Saskatoon, SK S7K 5J1 Ph: (306) 651-1815 Fax: (306) 651-2293
email: sales@axiomind.com website: www.axiomind.com
MF200 and MF300 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 system temperature is at it’s lowest.
Installation Instructions
1. Set System Feeder on a secure and level base or in the optional tank shelf.
2. Connect the unit to the system using copper or plastic tubing. 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 SYSTEM 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 remove low level float switch from
circuit and connect to 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% Polypropylene Glycol 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 fuse and 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 system pressure is below pressure
switch setting (18 psi), the pump will start. The System Feeder will run until system is pressurized to
approximately 18 psi. and shut-off. It may cycle rapidly a number of times while system pressure
stabilizes and while air is removed from the system. The cycling will stop once system pressure rises
above 18 psi due to thermal expansion.
9. If a higher fill pressure is required (up to 25 psi) the internal pressure switch may be adjusted by
turning the center adjusting screw counter clockwise to increase pressure. Access to the pressure
switch can be gained by lifting the left side of the top cover.
10. The MF200 is shipped with a small amount of 50% propylene glycol (non-toxic) in the discharge
tubing between the pump and the check valve. This is to aid in priming.
Please note that the pressure gauge supplied with the unit 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 and should not be a concern.
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 to horizontal
position will stop pump.
COLD STATIC FILL PRESSURE
The cold static fill pressure (CSFP) in a closed hydronic system has to be high enough to
accomplish three things.
1) Overcome the static head (height) between the fill point and the highest point in the system.
2) Provide adequate pressure (minimum 4 psig) at the top of the system for proper air venting.
3) Maintain adequate pressure at the inlet of the system pumps to prevent cavitation.
The formula for calculating the required CSFP to satisfy points 1 & 2 is:
(Static height in feet/2.31) + 4 = CSFP in psig.
As an example, the CSFP for a system with a static height above the fill point of 40 feet would
be: (40/2.31) + 4 = 21.3 psig.
For most closed hydronic systems operating below about 210 F, maintaining the minimum topof-system pressure at 4 psig will be adequate to prevent pump cavitation even if the pumps are at
or near the top of the system as well.
IMPORTANT NOTE – For air-charged diaphragm or bladder tanks, the air charge in the tank must be
adjusted to equal the cold static fill pressure before it is connected to the system.
Purger
Pump
Expansion
Tank
Connection Schematic – MF 200 Packaged System Feeder
MF 200
Installation Instructions for the RIA10-1-SAA Control Panel for use
with MF200 Feeder
The low level float switch in the MF series are factory wired to be OPEN on LOW LEVEL. Remove the
screws fastening the top cover to the unit and lift the cover to get access to the float switch wiring.
Disconnect the power before doing this.
1. Cut the wires connecting the float switch to the rest of the MF200 circuit.
2. Connect the wires to complete the circuit without the float switch.
Note – the switch positions shown in this document are for the unit as it comes out of the box, with no
fluid in the tank and no pressure in the system
3. Extend the wires from the float switch and push the float cable through strain relief fitting in control
panel and connect float wires to terminals 1 and 2 on terminal strip. Connect ground wire to ground
connection. Tighten strain relief nut to secure cable into panel.
4. Connect DCS wiring to remote alarm dry contacts as requested to provide alarm signal.
5. To disable the audible alarm, remove the jumper on the control board.
6. Plug the MF200 into the RIA10-1-SAA panel.
Interrupteur à
flotteur
Retirez le cavalier pour désactiver l’alarme sonore
Note : l’isolation du câblage à basse tension doit être approuvée pour
300V
1
2
3
N.F.
4
N.O.
5
COM
LEGEND
ITEM #
8
25
15
24
14
21
17
2
11
12
9
23
10
1
11
3
4
16
18
5
13
4
7
19
22
20
6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
MF200-0102
MF200-0111
MF200-0201
MF200-0401
MF200-0700
MF200-0800
MF200-0920
MF200-0930
MF200-0950
MF200-0960
MF200-0980
MF200-0990
MF200-1000
MF200-1000A
MF200-1200
MF200-1300
MF200-1400
MF200-1410
MF200-1421
MF200-1501
MF200-1510
MF200-1520
MF200-1600
25
PROJECT
CUSTOMER
DRWG. NO. EQUIP. NO. JOB NO. DATE
MF-200 (EXPLODE)
TLL-MF200-1005
PARTS LIST
AXIOM INDUSTRIES
DEC 11 2014
DESCRIPTIONPART #
120V to 24DCV power adapter
inline DC jack (female)
adjustable pressure switch
pressure snubber
pressure gauge
float switch
strainer
3/8" plastic hose
½” OD clear braided hose
3/8” vinyl hose
5/8" plastic clampMF200-0970
¼” check valve
1/2
" to
1/4
" adapter
tank
tank cap
¼” angle ball valve
pump & motor assembly
manifold block
bracket - manifold block
power adapter bracket
strain relief grommet
cable clamp
½” plastc clamp
tank lid
funnelMF200-1700
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