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1.  Valve body may be installed in any position, in any orientation (see Figure A). 3-way actuator’s power connections must be over the 

supply port to ensure proper flow direction (see Figure A).

2.  Before mounting body, refer to Figure B and Dimensions Section for clearances.

3.  Use of a lead or tin based solder with a melting point below 600°F is recommended. Do not overheat. Make sure the ball valve is in 

the FULL OPEN position during soldering. Direct flame tip away from the center of the valve. Cool valve quickly with a wet rag.

4.  Solder build-up on the ball valve may prevent proper opening and closing of the valve. Rotate the manual operation button several 

times to loosen any possible build-up.

5.  Valve body can be submerged for leak testing before the actuator is attached.

Actuator Installation / Removal

1.  Valve actuator may be attached to the valve body in either direction (see Figure A). The 3-way actuator must be attached with the 

power connections over the supply port to ensure proper flow direction (see Figure A).

2.  Actuator removal: Remove valve actuator prior 

to soldering by rotating the actuator counterclock-

wise approximately 30 degrees and lifting upward 

approximately 3/4” (see Figure C).

3.  To re-assemble actuator to valve body: Position 

actuator such that the “D” shaped valve stem aligns 

properly with the “D” shaped actuator drive cavity 

(Note: The “D” shaped stem design allows for cor-

rect  insertion  every  time).  Next,  slide  valve  stem 

into  actuator  cavity  and  rotate  until  the  actuator 

slips over the valve’s locking posts (see Figure C), 

once the actuator is flush with valve body, turn actu-

ator clockwise and lock into position.

Wiring and Sensor Installation

All terminals provided with the iSeries-R are removable. In order to prevent 

damage to the electronics, disconnect all plugs before the power is turned on 

and check voltages and sensors. Once the circuits are tested, plug in the ter-

minals.

Powering the Control 

For  intermittent  operation,  connect  one  side  of  the  end  switch  (e.g.  Taco 

ZVC/SR  series  zone  control)  or  thermostat  to  an  external  24  V  (ac)  trans-

former. Connect the other side of the zone control’s end switch to the R ter-

minal on the iSeries-R. The C terminal must then be connected to the other 

side of the transformer. For continuous operation, simply wire the transformer 

directly to the R and C terminals on the iSeries-R. Ensure that no power is 

present during this process. 

Sensors 

Do not apply power to these terminals as this will damage the iSeries-R. The 

wiring terminals for the sensors may be removed for ease of installation.

Outdoor Sensor 

Remove the screw and pull the front cover off the sensor enclosure.

The outdoor sensor can either be mounted directly onto a wall or in a 2” x 

4” electrical box. When the sensor is wall mounted, the wiring should enter 

through the back or bottom of the enclosure. Do not mount the sensor with 

the  conduit  knockout  facing  upwards  as  rain  could  enter  the  enclosure  and 

damage the sensor.

WARNING: 

Wiring connections must be made in accordance with all applicable electrical codes.

CAUTION: 

To prevent electrical shock, disconnect electric power to system at main fuse or 

circuit breaker box until installation is complete. When a service switch is installed, more than 

one disconnect switch may be required to deenergize this device for servicing.

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Figure C: Actuator Removal

Step 1

Rotate actuator counter

clockwise approximately 30

degrees

Step 2

Move actuator upward

3/4" to discharge

Locking

Post

4

Summary of Contents for i Series

Page 1: ...mperature drop For example if a Reset Ratio of 1 2 is selected the supply water temperature is increased by 1 2 degrees of every 1 degree of outdoor temperature drop 2 Way 3 Way Mixing An iSeries Mixing Valve may be used to mix the hot boiler water temperature with the cooler return water temperature from the system loop The position of the iSeries Mixing Valve is modulated in order to inject diff...

Page 2: ...1 5 From the 2 Way Cv chart below select the valve size with the closest Cv value to the injection flow rate calculated in step 4 Do not size the 2 Way iSeries Mixing Valve based soley on pipe size 3 Way iSeries Mixing Valve Selection Select the 3 Way iSeries Mixing Valve based on the 3 way Pressure Drop chart below Sequence of Operation Power Up and Heat Request Whenever the iSeries R is powered ...

Page 3: ...he minimum setting The minimum setting is selected via DIP switch 3 When the switch is turned on the minimum temperature is set to 120 F and when the DIP is turned off the minimum tempera ture is 135 F When using low temperature boilers such as condensing or electric the boiler minimum temperature may be disabled by powering up the control without a boiler return sensor Whenever the iSeries R is b...

Page 4: ...able In order to prevent damage to the electronics disconnect all plugs before the power is turned on and check voltages and sensors Once the circuits are tested plug in the ter minals Powering the Control For intermittent operation connect one side of the end switch e g Taco ZVC SR series zone control or thermostat to an external 24 V ac trans former Connect the other side of the zone control s e...

Page 5: ...eatly simplify troubleshooting of the iSeries R When the control flashes an error message identify the fault and follow standard test ing procedures to confirm the problem If you suspect a wiring fault return to the wiring section on this brochure and carefully check all external wiring and wiring connections Multi Status LED Adjustment of Settings If the outdoor temperature is cold and the buildi...

Page 6: ... rings EPDM Dimensions Ufnqfsbuvsf Sftjtubodf Ufnqfsbuvsf Sftjtubodf Ufnqfsbuvsf Sftjtubodf Ufnqfsbuvsf Sftjtubodf G D X G D G D G D 41 31 21 1 21 31 41 51 61 71 81 91 1 211 221 231 241 251 261 271 281 291 2 1 311 45 3 34 29 23 8 2 5 21 27 32 38 43 49 54 5 65 71 77 82 88 93 99 4 345 2 7 276 291 229 129 96 473 73 576 57 329 45 669 37 1 2 11 26 422 22 994 3 8 445 6 939 5 776 4 871 4 161 3 5 1 3 156 ...

Page 7: ...tion 9300 2044RP Strap on Sensor 9300 2052RP Outdoor Sensor iT024Q6A1 Outdoor Reset Actuator iU024Q6A1 Setpoint Actuator Notes 7 2 j jWbmwf Tj f 161 203 186 405 211 2 Dpoofdujpo D Txfbu U Uisfbe Cbmm Uzqf 3 3 Xbz 4 4 Xbz Bduvbups Uzqf S Sftfu T Tfuqpjou ...

Page 8: ...epair Any Taco product or part not installed or operated in conformity with Taco instructions or which has been subject to misuse misapplica tion the addition of petroleum based fluids or certain chemical additives to the systems or other abuse will not be covered by this warranty If in doubt as to whether a particular substance is suitable for use with a Taco product or part or for any applicatio...

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