Install Instructions

ManualsBrandsTaco ManualsHeating Supplies1", 2 Way Setpoint I-Series Mixing Valve (Sweat)

Boiler

Sensor

iSeries-S

4-way Valve with Low Temperature Zones

Supply

Sensor

Instruction Sheet

iSeries - Setpoint (iSeries-S)

2-Way, 3-Way and 4-Way iSeries Mixing Valves

102-144

The iSeries-S is a microprocessor-based valve designed to provide a setpoint (fixed) temperature to a heating system by modulating

the position of an iSeries Mixing Valve. With the addition of a boiler sensor, the iSeries-S can provide boiler protection in order to pre-

vent boiler flue gas condensation.

2-Way / 3-Way / 4-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 different rates of hot water into the cooler system return

water. This allows for virtually any water temperature to be supplied to the heating system. When deciding between using a 2-way,

3-way or 4-way valve, maximum flow rates must be considered. See the charts on pages 2 and 3 before selecting style of valve / piping.

Most boilers cannot operate at low temperatures, therefore the iSeries-S can be modulated back in order to prevent the boiler from

operating at cold temperatures by installing the boiler sensor.

SUPERSEDES: August 15, 2005 EFFECTIVE: June 1, 2009

Plant ID# 001-1026

WARNING: Do not use iSeries products for potable water tempering or in any application where

scalding can occur as a result of exposure to the tempered water.

Supply

Sensor

Boiler

Sensor

iSeries-S

2-way Valve

Boiler

Sensor

Supply

Sensor

3-way Valve

iSeries-S

3-way Valve, Multiple Temperature System

iSeries-S

Supply

Sensor

Supply

Sensor

Boiler Sensor Boiler Sensor

High Mass

Boiler

Supply

Sensor

3-way Valve with High Temperature Zones

(Alternate Piping)

iSeries-S

4-way Valve, MultipleTemperature System

Boiler

Sensor

Supply

Sensor

Summary of content (8 pages)

PAGE 1
02-144 Instruction Sheet iSeries - Setpoint (iSeries-S) 2-Way, 3-Way and 4-Way iSeries Mixing Valves SUPERSEDES: August 15, 2005 EFFECTIVE: June 1, 2009 Plant ID# 001-1026 WARNING: Do not use iSeries products for potable water tempering or in any application where scalding can occur as a result of exposure to the tempered water. The iSeries-S is a microprocessor-based valve designed to provide a setpoint (fixed) temperature to a heating system by modulating the position of an iSeries Mixing Valve.
PAGE 2
Design When using an iSeries-S Mixing Valve, the following piping requirements must be considered for proper operation. 1. In order to hydraulically isolate the boiler loop from the injection or system loop primary/secondary piping must be used. There must be no more than 4 pipe diameters between the tees in the boiler loop (Note 1). 2.
PAGE 3
-Way / 4-Way iSeries Mixing Valve Selection Select the 3-way or 4-way iSeries Mixing Valve based on the Pressure Drop chart below. iSeries 3-way Valve Pressure Drop Flow GPM 1⁄ " 2 1⁄ " 2 Sweat & Threaded Cv = 1.5 Union Cv = 3.5 3⁄ " 4 Sweat & Threaded Cv = 3.5 3⁄ " 4 Union Cv = 4.5 1" Sweat & Threaded Cv = 4 1" Union Cv = 4.5 PSI Ft. Head PSI Ft. Head PSI Ft. Head PSI Ft. Head PSI Ft. Head PSI Ft. Head 1 ⁄2 0.11 0.26 0.02 0.05 0.02 0.05 0.01 0.03 0.02 0.04 0.01 0.
PAGE 4
Valve Installation WARNING: Operator must be removed from the valve body before soldering. Ball valve must be in the full open position before soldering. Valve is shipped in the full closed position. 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.
PAGE 5
Wiring and Sensor Installation 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. All terminals provided with the iSeries-S are removable.
PAGE 6
Testing the Sensors A good quality test meter capable of measuring up to 5,000 kΩ (1 kΩ = 1000 Ω) is required to measure the sensor resistance. In addition to this, the actual temperature must be measured with a good quality digital thermometer. First measure the temperature using the thermometer and then measure the resistance of the sensor at the iSeries-S. The wires from the sensor must not be connected to the iSeries-S while this test is performed.
PAGE 7
Dimensions Valve Size 1⁄ 2" C A B 3" 23⁄8" Weight (lbs) / Cv F 2-way 3-way 3*-way, U 4-way 2&3-way 3*-way, U 4-way 3*-way, U 4-way 3 ⁄4" 3" 2 ⁄8" 1" 3" 23⁄8" 3" 23⁄8" 11⁄4" E 39⁄16" 3 3 49⁄16" 53⁄16" — — 3 — 3 1.45/3.5 — 3 ⁄4" 2 ⁄8" 2 ⁄16" 3 ⁄16" 4 ⁄4" 3 ⁄16" 1.20/10.3 1.32/4.5 1.50/4.5 1.80/7.0 311⁄16" 5" 65⁄8" 315⁄16" 25⁄8" 29⁄16" 31⁄16" 71⁄4" 33⁄4" 1.55/8.9 1.75/4.5 1.50/4.5 1.25/9.3 — 35⁄16" — 33⁄8" — — — 3.15/17.
PAGE 8
Notes LIMITED WARRANTY STATEMENT Taco, Inc. will repair or replace without charge (at the company’s option) any product or part which is proven defective under normal use within one (1) year from the date of start-up or one (1) year and six (6) months from date of shipment (whichever occurs first). Taco, Inc.