Watts Tekmar Switching Relay 302P-3, Switching Relay 303P Series, Tekmar Switching Relay 302P Series, Switching Relay 303P-1, Switching Relay 303P-2 Installation Manual

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Installation Manual

Switching Relay 302P

Two Zones with Priority

H3024A

Power

Priority

Zone 1Zone 2

RoomResponse

Switching Relay 302P

The Switching Relay 302P connects up to two thermostats and operates circulators to provide heating to a zoned hydronic heating system.

Features

• RoomResponseTM signal

• Compatible with all low voltage thermostats

• Unlimited zone expansion

• Zone priority

• Priority override

• Pump exercising

• Post purge

• Away signal shared between tekmar thermostats

• LED for each zone, priority, end switch and RoomResponse

• Four ground screws

• Top, bottom and back conduit knockouts

• Fuses protect transformers and pumps

• Two spare fuses included

• CSA approved

Table of Contents

Important Safety Information ......................................... 2

Installation ...................................................................... 3

Packaging Contents ................................................... 3

Tools Required ...........................................................3

Materials Required ..................................................... 3

Location ..................................................................... 3

Installing the Enclosure .............................................. 3

Application 302P-1 .................................................... 4

Application 302P-2 .................................................... 5

Application 302P-3 .................................................... 6

User Interface ................................................................. 7

Indicator LED ............................................................. 7

Sequence of Operation .................................................. 7

Technical Data .............................................................. 11

Limited Warranty and Product Return Procedure ........ 12

Important Safety Information

It is your responsibility to ensure that this control is safely installed according to all applicable codes and standards. tekmar is not responsible for damages resulting from improper installation and/or maintenance.

This is a safety-alert symbol. The safety alert symbol is shown alone or used with a signal word (DANGER, WARNING, or CAUTION), a pictorial and/or a safety message to identify hazards. When you see this symbol alone or with a signal word on your equipment or in this manual, be alert to the potential for death or serious personal injury.

This pictorial alerts you to electricity, electrocution, and shock hazards.

This symbol identifies hazards which, if not avoided, could result in death or serious injury.

This symbol identifies hazards which, if not avoided, could result in minor or moderate injury.

This symbol identifies practices, actions, or failure to act which could result in property damage or damage to the equipment.

Read manual and all product labels BEFORE using the equipment. Do not use unless you know the safe and proper operation of this equipment. Keep this manual available for easy access by all users. Replacement manuals are available at tekmarControls.com

• It is the installer’s responsibility to ensure that this control is safely installed according to all applicable codes and standards.

• Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury or death.

• This control is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be placed into the control circuit.

The control includes fuses and transformer that are serviceable. Do not attempt to service any other parts on the control. Attempting to service the control voids the warranty.

• Strip all wiring to a length of 3/8 in. or 10 mm for all terminals.

• A circuit breaker or power disconnect that provides power to the control should be located nearby and clearly labeled.

• Refer to the current and voltage ratings at the back of this manual before connecting devices to this control.

2 of 12

Radio Frequency Interference

The installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise. Conversely, this Class B digital apparatus complies with Part 15 of the FCC Rules and meets all requirements of the Canadian Interference-Causing Equipment Regulations. However, if this control does cause harmful interference to radio or television reception, which is determined by turning the control off and on,

Installation

Packaging Contents

• 1 Switching Relay 302P

• 2 Spare fuses (located in cover)

Tools Required

• tekmar or jeweler screwdriver

• Phillips head screwdriver

Materials Required

• 18 AWG LVT solid wire (low-voltage connections)

• 14 AWG solid wire (line-voltage connections)

the user is encouraged to try to correct the interference by re-orientating or relocating the receiving antenna, relocating the receiver with respect to this control, and/ or connecting the control to a different circuit from that to which the receiver is connected.

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

• Installation Manual 302P_D

• Needle-nose pliers

• Wire stripper

• Four 1/8” - 1” wood screws

Location

• Keep the control dry. Avoid potential leakage onto the control.

• Maintain relative humidity less than 90% in a non-condensing environment.

• Avoid exposure to extreme temperatures beyond 32-122°F (0-50°C).

• Install away from equipment, appliances, or other sources of electrical interference.

• Install to allow easy access for wiring, viewing, and adjusting the display screen.

• Install approximately 5 feet (1.5 m) off the finished floor.

• Locate the control near pumps if possible.

• Provide a solid backing which the enclosure can be mounted to. Example: plywood or wall studs.

• Use the conduit knockouts provided on the upper, lower, and back of the enclosure for wiring.

Installing the Enclosure

To prevent the risk of personal injury and/or death, make sure power is not applied to the control until it is fully installed and ready for final testing. All work must be done with power to the circuit being worked on turned off.

Please be aware local codes may require this control to be installed or connected by an electrician.

3 of 12

Application 302P-1

The Switching Relay 302P operates the circulators for two heating zones when the corresponding thermostat calls for heat. The boiler is fired whenever a zone calls for heat.

Mechanical

Legend

B1 = Boiler P1, P2 = Zone 1 and 2 Pumps T1 = WiFi Thermostat 561, 562 or 563 T2 = Generic Digital Power-Stealing Thermostat

302P

Electrical

Away C R Rh W

MOD

POWER ROOM

DHW CRW

tN4

BOILER T-STAT 1T-STAT 2T-STAT 3

RESPONSE

FUSE 1

120 VAC POWER

tN4

T1 T2 T3 T4 T5 T6

FUSE 7

FUSE 8

FUSE 2

PRIORITY

PUMP 1

NLNLNL NLNLNLN

R W

CRW

tN4

FUSE 3FUSE 4FUSE 5

PUMP 2PUMP 3PUMP 4PUMP 5PUMP 6

CRW

tN4

T-STAT 4

CRW

tN4

T-STAT 5

CRW

P1 P2

tN4

CRW

tN4

T-STAT 6 EXPANSION

MASTER MEMBER

T-STAT 1 PRIORITY : 0N

EXERCISING : ON

POST PURGE : ON

MOD BOILER : 0-10V

RESERVED

50 100

MOD MAX %

FUSE 6

BCDE

70 80

9060

DIP Switches

Master T-stat 1 Priority Off Exercising On Post Purge On Mod Boiler - not applicable

OFF OFF OFF 4-20 mA

The 302P includes internal circuitry to support power stealing thermostats. External resistors are not required.

L N

P1 P2

4 of 12

Application 302P-2

The Switching Relay 302P operates two heating zone circulators when the corresponding thermostat calls for heat. Zone 1 heats a domestic hot water tank. When priority is selected, zone 2 shuts off when zone 1 is heating. The boiler is fired when there is a call for heat.

Mechanical

Legend

A1 = DHW Tank Aquastat B1 = Modulating Condensing Boiler BP = Boiler Pump P1 = Zone 1 DHW Tank Pump P2 = Zone 2 Pump T1 = WiFi Thermostat 561, 562 or 563

302P

Electrical

DHW

+T-T

B1 P1

Away C R Rh W

MOD

POWER ROOM

DHW CRW

tN4

BOILER T-STAT 1T-STAT 2T-STAT 3

RESPONSE

FUSE 1

120 VAC POWER

tN4

T1 T2 T3 T4 T5 T6

FUSE 7

FUSE 8

FUSE 2

PRIORITY

PUMP 1

NLNLNL NLNLNLN

CRW

tN4

FUSE 3FUSE 4FUSE 5

PUMP 2PUMP 3PUMP 4PUMP 5PUMP 6

CRW

tN4

T-STAT 4

CRW

tN4

T-STAT 5

CRW

tN4

T-STAT 6 EXPANSION

CRW

tN4

T-STAT 1 PRIORITY : 0N

EXERCISING : ON

POST PURGE : ON

MOD BOILER : 0-10V

RESERVED

FUSE 6

BCDE

MASTER MEMBER

70 80

50 100

MOD MAX %

DIP Switches

Master T-stat 1 Priority On Exercising On Post Purge On Mod Boiler - depends on boiler

OFF OFF OFF 4-20 mA

9060

The 302P includes internal circuitry to support power stealing thermostats. External resistors are not required.

L N

5 of 12

Application 302P-3

Away

C R Rh W

Away

C R Rh W

Away

C R Rh W R W R W

FUSE 2

FUSE 7

FUSE 8

FUSE 3FUSE 4FUSE 5

FUSE 6

70 80

9060

50 100

MOD MAX %

MASTER MEMBER

OFF OFF OFF 4-20 mA

T-STAT 1 PRIORITY : 0N

EXERCISING : ON

POST PURGE : ON

MOD BOILER : 0-10V

RESERVED

FUSE 1

120 VAC POWER

MOD

tN4

POWER ROOM

RESPONSE

T1 T2 T3 T4 T5 T6

DHW CRW

BOILER T-STAT 1 T-STAT 2 T-STAT 3

PRIORITY

PUMP 1

PUMP 2PUMP 3PUMP 4PUMP 5PUMP 6

NLNLNL NLNLNLN

tN4

CRW

tN4

C RW

T-STAT 4

tN4

C RW

T-STAT 5

tN4

C RW

T-STAT 6 EXPANSION

tN4

C RW

tN4

BCDE

FUSE 2

FUSE 7

FUSE 8

FUSE 3FUSE 4FUSE 5

FUSE 6

70 80

9060

50 100

MOD MAX %

MASTER MEMBER

OFF OFF OFF 4-20 mA

T-STAT 1 PRIORITY : 0N

EXERCISING : ON

POST PURGE : ON

MOD BOILER : 0-10V

RESERVED

FUSE 1

120 VAC POWER

MOD

tN4

POWERROOM

RESPONSE

T1 T2 T3 T4 T5 T6

DHW CRW

BOILER T-STAT 1 T-STAT 2 T- STAT 3

PRIORITY

PUMP 1

PUMP 2PUMP 3PUMP 4PUMP 5PUMP 6

NLNLNL NLNLNLN

tN4

CRW

tN4

C RW

T-STAT 4

tN4

C RW

T-STAT 5

tN4

C RW

T-STAT 6 EXPANSION

tN4

C RW

tN4

BCDE

+TT

Two Switching Relay’s operate six heating zone circulators. The two controls are connected together using an expansion bus wire. The master 302P fires the boiler when any zone calls for heat. If priority is selected, zones 2 through 6 shut off when zone 1 is calling for heat.

Mechanical

Legend

A1 = DHW Tank Aquastat B1 = Modulating Condensing Boiler BP = Boiler Pump P1 = Zone 1 DHW Tank Pump

302P 304P

P2 to P6 = Zone 2 through 6 Pump T1 = WiFi Thermostat 561, 562 or 563 T2, T3 = Thermostat 518 or 519 T4 = Generic Power-Stealing Thermostat T5 = Generic Bi-Metallic Strip Thermostat

Expansion

P3 P4

The 302P includes internal circuitry to support power stealing thermostats. External resistors are not required.

Electrical

DIP Switches

Master T-stat 1 Priority On Exercising On

LLN

P1 P5

P2 P6P3 P4

Post Purge On Mod Boiler - depends on

boiler

DIP Switches

Member

T-stat 1 Priority Off Exercising On

T4 T5T2 T3

Post Purge On Mod Boiler - not applicable

6 of 12

User Interface - Indicator LED

Power

• On when 115 V (ac) is applied.

• Off when power disconnected or transformer fuse is blown.

Priority

• On when zone 1 has priority over zone 2.

• Flashing while in priority override.

RoomResponse

• On when modulating condensing boiler is operating below maximum setting.

Sequence of Operation

Zone 1

• On when thermostat 1 calls for heat.

Zones 2

• On when thermostat 2 calls for heat.

• Off during priority operation.

• Off when corresponding thermostat stops calling for heat.

Zone Operation

When a thermostat calls for heat by closing the R and W terminals:

• 115 V (ac) is applied to the corresponding circulator pump.

• The corresponding zone indicator LED is turned on.

Boiler Operation

When a thermostat calls for heat by closing the R and W terminals:

• The boiler end switch XX is closed to fire the boiler. This requires the control DIP switch to be set to Master.

• The RoomResponseTM 0-10 V (dc) or 4-20 mA signal is sent to a modulating-condensing boiler.

DHW Operation

Many modulating-condensing boilers have multiple temperature call inputs. Wire the DHW end switch to input recommended in the boiler's manual.

When a zone 1 calls for heat by closing the R and W terminals:

• The DHW end switch is closed to fire the boiler at the DHW temperature.

• The Mod Boiler output is changed to 10 V (dc) or 20 mA.

Priority Override

• The Priority LED light flashes when priority override is in effect.

• Priority for zone 1 is in effect for 60 minutes after which priority override starts by shutting off zone 1 and resumes heating on zone 2 and expansion zones.

• During priority override, the mod max dial setting limits the RoomResponse

signal to the boiler.

Master / Member DIP Switch

• Allows for unlimited expansion using additional Switching Relays and/or Zone Valve Controls.

• The Master Switching Relay is wired and operates the boiler.

• If using a single Switching Relay set to Master.

• When using multiple Switching Relays and/or Zone Valve Controls, set one control to Master and set all other controls to Member.

• The boiler end switch XX only closes when the DIP switch is set to Master and does not close when set to Memb e r.

T-Stat 1 Priority DIP Switch

When T-Stat 1 is calling for heat by closing the R and W terminals:

• 115 V (ac) is applied to the zone 1 circulator pump.

• Zone 1 indicator LED is turned on.

• Priority indicator LED is turned on.

• Zone 2 circulator pumps and LEDs are turned off.

• Expansion Member controls shut off their zones.

• After 60 minutes of continuous zone 1 call for DHW heating the control goes into priority override. This prevents building freeze up if the DHW tank aquastat fails in the closed position.

Exercising DIP Switch

• ON: Each circulator pump is energized for 30 seconds every 72 hours.

• OFF: Circulator pump exercising disabled.

Post Purge DIP Switch

• ON: After the last thermostat stops calling for heat, the last circulator pump remains on for 2 minutes to purge heat from the boiler to the zone.

• OFF: Post purge disabled.

Mod Boiler DIP Switch

• Select either 0-10 V (dc) or 4-20 mA signal to the modulating condensing boiler. Consult the boiler manual to determine the signal type. The DIP switch position does not matter if the modulating boiler output is not used.

Fuses

• All fuses are T5A 250V slow blow, glass 5 x 20 mm.

• Fuses 1 and 2 correspond to the zone 1 and 2 circulator pump output. If a fuse is blown, first check that the pump is not seized and the wiring is not shorted. Then replace the fuse.

• Fuse 7 and 8 correspond to the 24 V (ac) transformer power supply. If a fuse is blown, first check that the thermostat wiring is not shorted. Then replace the fuse.

Expansion Terminals

• Connect the five wires of the expansion bus from the master to the member controls.

Terminal

Description

A/tN4 Away signal connecting tekmar thermostats B

RoomResponse

signal from member controls C Power common D Demand signal. 0 Vdc = demand. 2 Vdc = no

demand

Priority signal. 0 Vdc = priority. 2 Vdc = no priority

7 of 12

RoomResponseTM Signal

70 80

9060

50 100

MOD MAX %

The RoomResponseTM signal adjusts the temperature of a modulating condensing boiler that accepts a 0-10 V(dc) or 4-20 mA input. It works by continually adjusting boiler water temperatures to the lowest possible value to meet comfort without wasting energy. This is done by monitoring each thermostat's on and off time pattern and determines the ideal water temperature for each zone. The control then chooses the highest water temperature requirement of all the thermostats and provides a 0-10 V (dc) or 4-20 mA signal proportional to the boiler operating temperature. The RoomResponseTM signal is a DOE compliant method of controlling boiler temperature to building load. The RoomResponseTM signal is not available to on/off boilers.

Benefits of the RoomResponseTM signal include:

• Increase in boiler efficiency

• Reduction in room temperature swing

• Reduction in expansion noises from heating pipes

Mod Max % Dial

The upper limit of the 0-10 V (dc) or 4 -20 mA signal to the modulating condensing boiler can be set using the Mod Max % Dial.

This sets the upper temperature limit for the boiler.

Mod Max % dial set to 100% in the illustration.

The dial is only applicable to controls set as the Master.

Mod Max % Max Voltage Max mA

50 5 12 60 6 13.6 70 7 15.2 80 8 16.8 90 9 18.4

100 10 20

Setting the Max Mod % Dial

Required Adapter

Boiler Make/Model

Aerco AM series Not required 0-10 V 50% 65% 80% 100%

Bosch Greenstar ICM Module 0 -10 V 55% 70% 80% 100% Buderus GB142, GB162 EM10 Module 0-10 V 50% 60% 75% 90%

FTXL*

™

Burnham® Alpine Camus® Modulating Micoflame HTP Elite Not required 0-10 V 50% 65% 80% 90%

IBC VFC and SL series* Laars® Mascot LX Not required 0-10 V 55% 70% 85% 100% Laars® Mascot FT Not required 0-10 V 50% 65% 80% 100% Lochinvar® Knight

Lochinvar

NTI Trinity Fire Tube and LX Not required 4-20 mA 55% 65% 75% 90% Peerless PureFire PFA-1 Adapter 0-10 V 55% 65% 75% 90% Raypak Xfyre, Xtherm, MVB, XPakFT Not required 0-10 V 55% 65% 80% 90%

(Supplied by boiler

manufacturer)

Not required 4-20 mA 50% 70% 85% 100%

Not required 0-10 V 50% 60% 70% 85%

Not required 0-10 V 65% 75% 85% 100%

Not required 0-10 V 55% 70% 85% 100%

0-10 V (dc) /

4-20 mA

DIP Switch

Mod Max % Dial for Boiler Design Temperature

120 °F 140°F 160° F 180°F

Riverside HeatStation*

Viessmann 100-W, WB1B

Viessmann 200-W, B2HB and 300 CU3A

Weil-McLain

* Requires changes to boiler's settings

Evergreen*

Not required 0-10 V 50% 65% 85% 100%

OpenTherm Module

Not required 0-10 V 50% 60% 70% 80%

Not required 0-10 V 50% 70% 85% 100%

8 of 12

0-10 V 55% 70% 85% 100%

Aerco AM Series Camus Modulating MicoFlame

–

302P

22+23

–

Aerco AM

• No changes to the boiler are required.

Bosch Greenstar

–

302P

• Install the Bosch ICM as per the directions.

• Set ICM jumper to the left position to enable system supply water temperature (VT) mode.

9+10

–

Bosch ICM

Buderus GB142 and GB162

–

302P

5+6

–

Camus Micoflame

• Change control to mode 6 in the control parameters.

Heat Transfer Products Elite

–

302P

• Move jumper on connection board from A to B.

• Set function 17 to temperature.

16–17

HTP Elite

IBC VFC and SL Series

–

302P

Buderus EM10 Module

• Install the Buderus EM10 module as per the directions.

• Do NOT install the jumper between U terminals 1 and 3 on the EM10 module.

–

On the V10 controller:

• Set Load 1 to External Control

• Change "Max Control @ 9.5 Vdc" to 190°F (88°C)

• Change "Min Control @ 2.1 Vdc" to 32°F (0°C)

Burnham Alpine Laars Mascot LX

–

302P

• Change Parameter 9 Remote 4-20 mA to Setpoint Source.

• Change "Energy Management" setting "Central Heat Modulation Source" to 4-20 mA.

• Change "Energy Management" setting "Central Heat 4-20 mA Setup, 4 mA Water Temperature" to 80°F (26.5°C).

TT –+

Burnham Alpine

–

• Change Installer Parameter 25 "0-10V to Power" to Disabled.

• Change Installer Parameter 26 "0-10V to outlet setpoint" to Disabled.

TT –+

IBC V10 Control302P

TT –+

5611 12

Laars Mascot LX302P

9 of 12

Laars Mascot FT

Peerless Pinnacle PF-200, 210, 300, 399

–

302P

16–17

Laars Mascot FT

• No changes to the boiler are required.

Lochinvar Knight

–

302P

• Set BMS Type to Setpoint. This is the factory default setting.

WR –+

1237 38

Lochinvar Knight

Lochinvar FTXL

–

302P

• Set BMS parameter to ACTIVE.

• Set BMS Type to SETPOINT.

WR –+

21 22 35 36

Lochinvar FTXL

–

302P J5 J8 J18

15+16

–

Peerless

Pinnacle Terminal

Strip

2–8+12

Peerless PFA-1

Interface Adapter

Peerless Pinnacle

Control

Board

• Install the Peerless PFA-1 Interface Adapter

• On the boiler display, change Central Heating Mode to 4 for 0-10 VDC Input to Modulate Setpoint

Riverside HeatStation

+–

302P

Riverside HeatStation

• Set boiler PIM DIP switch 2 to Off.

• Set boiler PIM DIP switch 5 to On.

• Set boiler PIM DIP switch 6 to Off.

• Set APP parameter to EMS.

• Set SIGNAL parameter to 0-10Vdc.

• Set SETP LO to 70°F.

• Set SETP HI to 180°F.

EMS 8

–+

NTI Trinity LX

–

302P

• Enter boiler password.

• Set Parameter "Setpoint source" to 4-20mA

CH1R +–

3511 12

NTI Trinity LX

NTI Trinity FireTube

–

302P

NTI Trinity Fire Tube

• Enter boiler password.

• Set Parameter "Setpoint source" to 4-20mA

CH1R –+

Sensor I/O24Vac I/O

Raypak MVB and XTherm

–

302P

• Set boiler PIM DIP switch 2 to Down.

• Set boiler PIM DIP switch 5 to Up.

10 of 12

Raypak MVB or XTherm

–+

13 14 17 18

Raypak XFyre and XPakFT

Viessmann Vitodens 200-W, B2HP and Vitocrossal 300 CU3A

+– XX

–+ TT

J2 J1

302P

Raypak XFyre or XPakFT

• Set boiler PIM DIP switch 2 to Down.

• Set boiler PIM DIP switch 5 to Up.

Viessmann Vitodens 100-W, WB1B

–

302P

• Install the OpenTherm Module as per the boiler manufacturer's instructions.

1–4

Viessmann

OpenTherm Module

–

1–2

Viessmann

302P

Extension Module EA1

Plug 0 -10V

• Connect to the Viessmann Extension Module EA1 Pl u g 0 -10V.

Weil-McLain Evergreen

–

302P

• Use Local Priority 1 for DHW tank heating.

• Use Local Priority 2 for the RoomResponseTM signal.

• Set Local Priority 2 Supply Min to 60°F.

• Set Local Priority 2 Supply Max to 180°F.

• Set Local Priority 2 Volts For Min to 2 V.

• Set Local Priority 2 Volts For Max to 10 V.

5+6

–

Weil-McLain

Evergreen P15

Technical Data

Switching Relay 302P Two Zones with Priority

Literature Submittal 302P_C, Installation Manual 302P_D, Job Record 302P_J

Packaged weight 5.0 lb. (2250 g)

Dimensions 8-3/16” H x 10-11/16” W x 2-3/8” D (208 x 271 x 60 mm)

Enclosure Cover: ABS plastic, Base: galvanized steel, NEMA type 1

Approvals CSA C US, RoHS

Ambient conditions Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% non-condensing

Power supply 115 V (ac) ±10%, 60 Hz, 11 A

Transformer

Fuses T5A 250 V slow blow 5 x 20 mm glass fuse, two spare fuses included

Control load 7 VA at 24 V (ac)

Pump relays 115 V (ac), 5 A, 1/3 hp, 10 A combined

Boiler XX end switch 24 V (ac), 5 A

DHW end switch 24 V (ac), 5 A

Mod boiler output 0-10 V (dc) 500 Ω min load impedance / 4-20 mA 1 kΩ max load impedance

40 VA at 24 V (ac), expandable to 80 VA with additional transformer M3069 (sold separately)

11 of 12

Warranty

Limited Warranty The liability of tekmar under this warranty is limited. The Purchaser, by taking receipt of any tekmar product (“Product”), acknowledges the terms of the Limited Warranty in effect at the time of such Product sale and acknowledges that it has read and understands same.

The tekmar Limited Warranty to the Purchaser on the Products sold hereunder is a manufacturer’s pass-through warranty which the Purchaser is authorized to pass through to its customers. Under the Limited Warranty, each tekmar Product is warranted against defects in workmanship and materials if the Product is installed and used in compliance with tekmar’s instructions, ordinary wear and tear excepted. The pass-through warranty period is for a period of twenty-four (24) months from the production date if the Product is not installed during that period, or twelve (12) months from the documented date of installation if installed within twenty-four (24) months from the production date.

The liability of tekmar under the Limited Warranty shall be limited to, at tekmar’s sole discretion: the cost of parts and labor provided by tekmar to repair defects in materials and / or workmanship of the defective product; or to the exchange of the defective product for a warranty replacement product; or to the granting of credit limited to the original cost of the defective product, and such repair, exchange or credit shall be the sole remedy available from tekmar, and, without limiting the foregoing in any way, tekmar is not responsible, in contract, tort or strict product liability, for any other losses, costs, expenses, inconvenien c es, or da mag es, whe the r direct , ind ir ect, spec ial, se c ond ary, inci dental or consequential, arising from ownership or use of the product, or from defects in workmanship or materials, including any liability for fundamental breach of contract.

The pass-through Limited Warranty applies only to those defective Products returned to tekmar during the warranty period. This Limited Warranty does not cover the cost of the parts or labor to remove or transport the defective Product, or to reinstall the repaired or replacement Product, all such costs and expenses being subject to Purchaser’s agreement and warranty with its customers.

Any representations or warranties about the Products made by Purchaser to its customers which are different from or in excess of the

tekmar Limited Warranty are the Purchaser’s sole responsibility and obligation. Purchaser shall indemnify and hold tekmar harmless from and against any and all claims, liabilities and damages of any kind or nature which arise out of or are related to any such representations or warranties by Purchaser to its customers.

The pass-through Limited Warranty does not apply if the returned Product has been damaged by negligence by persons other than tekmar, accident, fire, Act of God, abuse or misuse; or has been damaged by modifications, alterations or attachments made subsequent to purchase which have not been authorized by tekmar; or if the Product was not installed in compliance with tekmar’s instructions and / or the local codes and ordinances; or if due to defective installation of the Product; or if the Product was not used in compliance with tekmar’s instructions.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHICH THE GOVERNING LAW ALLOWS PARTIES TO CONTRACTUALLY EXCLUDE, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, DURABILITY OR DESCRIPTION OF THE PRODUCT, ITS NON-INFRINGEMENT OF ANY RELEVANT PATENTS OR TRADEMARKS, AND ITS COMPLIANCE WITH OR NON-VIOLATION OF ANY APPLICABLE ENVIRONMENTAL, HEALTH OR SAFETY LEGISLATION; THE TERM OF ANY OTHER WARRANTY NOT HEREBY CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL NOT EXTEND BEYOND TWENTY-FOUR (24) MONTHS FROM THE PRODUCTION DATE, TO THE EXTENT THAT SUCH LIMITATION IS ALLOWED BY THE GOVERNING LAW.

Product Warranty Return Procedure All Products that are believed to have defects in workmanship or materials must be returned, together with a written description of the defect, to the tekmar Representative assigned to the territory in which such Product is located. If tekmar receives an inquiry from someone other than a tekmar Representative, including an inquiry from Purchaser (if not a tekmar Representative) or Purchaser’s customers, regarding a potential warranty claim, tekmar’s sole obligation shall be to provide the address and other contact information regarding the appropriate Representative.

Need help? Go to our website or contact us.

tekmarControls.com | tekmar.customerservice@wattswater.com | 1-800-438-3903

All specications are subject to change without notice

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Watts Tekmar Switching Relay 302P-3, Switching Relay 303P Series, Tekmar Switching Relay 302P Series, Switching Relay 303P-1, Switching Relay 303P-2 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual