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© 2005 D 704 - 04/05
Technical Data
1. Disconnect the electrical supply.
2. Reduce system pressure to 0 psi and allow system to return to room temperature. Isolate the Mixing Station 704 by closing the
service valves or draining the system.
3. Remove the Boiler Supply connection to the Mixing Station 704.
4. Remove snap ring.
5. Remove the check valve, using needle nose pliers.
6. Install replacement check valve by pressing the valve into the casing until it is fi rmly seated.
7. Install the snap ring.
8. Reconnect the Boiler Supply connection to the Mixing Station 704.
9. Follow the “Installation” procedure to start up the Mixing Station 704.
Replacing the Check Valve
PERFORMANCE DATA
Flow Range: ......................................... 0 - 15.5 GPM
Head Range: ........................................ 0 - 15 Feet
Minimum Fluid Temperature: ............... 32°F (0°C)
Maximum Fluid Temperature: .............. 180°F (82°C)
Maximum Working Pressure: .............. 125 psi (875 kpa)
Connections: ......................................... 3/4” NPT
C US UL Mark
FOR INDOOR USE ONLY
MATERIALS OF CONSTRUCTION
Casing (body): ....................................... Bronze
Stator Housing: ...................................... Steel
Cartridge: ............................................... Stainless Steel
Impeller: ................................................. Non-Metallic
Shaft: ..................................................... Ceramic
O-Ring & Gaskets: ................................. EPDM
ELECTRICAL DATA CHART
Voltz ....................................................... 120
Hz .......................................................... 60
Ph .......................................................... 1
Amps ..................................................... 2
RPM ....................................................... 3250
HP .......................................................... 1/40 & 1/25
DIMENSIONS & WEIGHT
Ship Weight: 18.5 lbs (8.4 kg)
Motor Type ............................................. Permanent Split Capacitor
Impedance Protected
CONTROL ADJUSTMENT MENU
Mixing Setpoint Temperature ................. 60 to 185°F (16 to 85°C)
Maximum Temperature Difference
Between Mixing Supply and Return ...... 10 to 70°F (-12 to 21°C), Off
Design Outdoor Air Temperature ........... -60 to 32°F (-51 to 0°C), Off
Design Heating System Supply Water
Temperature .......................................... 70 to 185°F (21 to 85°C)
Maximum Mixing Target Supply ............. 80 to 185°F (27 to 85°C)
Minimum Mixing Target Supply
Fluid Temperature .................................. 35 to 150°F (2 to 66°C), Off
Minimum Boiler Target Supply
Water Temperature ................................ 80 to 180°F (27 to 82°C), Off
Warm Weather Shut Down .................... 35 to 100°F (2 to 38°C), Off
Units ...................................................... °F or °C
2 3/8” (60 mm)
2 3/8” (60 mm)
4 1/2” (114 mm)
CLEARANCE FOR
VENT REMOVAL
11 1/2”
(290 mm)
11 1/2”
(290 mm)
8 1/4”
(209 mm)
8 1/4”
(209 mm)
8 1/8”
(206 mm)
8 1/8”
(206 mm)
7 1/4”
(184 mm)
7 1/4”
(184 mm)
1”
(25 mm)
1”
(25 mm)
1”
(25 mm)
6 1/2”
(165 mm)
6 1/2”
(165 mm)
6 1/2”
(165 mm)
6 1/2”
(165 mm)
6 7/8”
(175 mm)
6 7/8”
(175 mm)
4” (101 mm)
4” (101 mm)
3 3/8” (86 mm)
3 3/8” (86 mm)
2 3/4”
(70 mm)
2 3/4”
(70 mm)
14”
(360 mm)
14”
(360 mm)
1 5/8” (41 mm)
1 5/8” (41 mm)
3/4” (19 mm)
