Watts Tekmar Zone Valve Control 304V Installation And Operation Manual
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Watts Tekmar Zone Valve Control 304V Installation And Operation Manual

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Installation & Operation Manual
Zone Valve Control 304V
Introduction
The Zone Valve Control 304V connects up to four thermostats and operates zone valves to provide heating to a zoned
hydronic heating system. The 304V operates a system pump whenever a zone valve opens. Zone 1 can operate either
a zone valve or a circulator to provide heat to an indirect domestic hot water tank with optional priority over zones
2 through 4. The 304V includes optional exercising to prevent circulator seizure when not in use, and optional post
purge operation of the domestic hot water tank to maximize energy savings. The 304V provides a RoomResponse
signal to modulating-condensing boilers to optimize comfort while improving boiler efficiency.
Features
• RoomResponse
signal
TM
• Compatible with all 24 V (ac) thermostats
• Compatible with 2, 3 and 4-wire zone valves
• Unlimited zone expansion
• Zone priority
• Priority override
• Pump exercising
• Post purge
Zone Valve Control 304V
Four Zones with Priority
© 2019 tekmar 304V _ D - 10/19
• LED for each zone, priority, end switch and RoomResponse
• Away signal shared between thermostats
• Four ground screws
• Top, bottom and back conduit knockouts
• Fuses protect transformers and pumps
• Two spare fuses included
• CSA approved
Power
Call
TM
RoomResponse
Zone 1
System
Valve
Priority
Pump
Open
Zone 2
Zone 3
Zone 4
304V _ D
10/19
Zoning
Replaces: 11/16
TM
TM

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Summary of Contents for Watts Tekmar Zone Valve Control 304V

  • Page 1 Installation & Operation Manual 304V _ D Zone Valve Control 304V 10/19 Zoning Replaces: 11/16 Introduction The Zone Valve Control 304V connects up to four thermostats and operates zone valves to provide heating to a zoned hydronic heating system. The 304V operates a system pump whenever a zone valve opens. Zone 1 can operate either a zone valve or a circulator to provide heat to an indirect domestic hot water tank with optional priority over zones 2 through 4. The 304V includes optional exercising to prevent circulator seizure when not in use, and optional post purge operation of the domestic hot water tank to maximize energy savings. The 304V provides a RoomResponse signal to modulating-condensing boilers to optimize comfort while improving boiler efficiency. Features • RoomResponse signal • LED for each zone, priority, end switch and RoomResponse • Compatible with all 24 V (ac) thermostats • Away signal shared between thermostats • Compatible with 2, 3 and 4-wire zone valves • Four ground screws • Unlimited zone expansion • Top, bottom and back conduit knockouts • Zone priority • Fuses protect transformers and pumps • Priority override...

  • Page 2: Table Of Contents

    Table of Contents Important Safety Information ..........2 User Interface ..............7 Indicator LED ..............7 Installation .................3 Preparation ..............3 Sequence of Operation .............7 Location ................. 3 Technical Data ..............8 Installing the Enclosure ..........3 Limited Warranty and Product Return Procedure .....8 Application 304V–1 ............4 Application 304V–2 ............5 Application 304V–3............6 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.

  • Page 3: Installation

    Radio Frequency Interference The installer must ensure that this control and its wiring are the control off and on, the user is encouraged to try to correct isolated and/or shielded from strong sources of electromagnetic the interference by re-orientating or relocating the receiving noise. Conversely, this Class B digital apparatus complies antenna, relocating the receiver with respect to this control, with Part 15 of the FCC Rules and meets all requirements of and/or connecting the control to a different circuit from that the Canadian Interference-Causing Equipment Regulations. to which the receiver is connected. However, if this control does cause harmful interference to Cet appareil numérique de la classe B respecte toutes les exi- radio or television reception, which is determined by turning gences du Règlement sur le matériel brouilleur du Canada. Installation Preparation Tools Required - - - - - - ----------- ------------------------- --------------------- -------------------------- • tekmar or jeweler screwdriver • Needle-nose pliers • Phillips head screwdriver • Wire stripper Materials Required ------- ----------- --------- ---------------- --------------------- --------------------- • 18 AWG LVT solid wire (low-voltage connections) • Four 1/8" - 1" wood screws...

  • Page 4: Application 304V-1

    Application 304V–1 The Zone Valve Control 304V operates four heating zones. When the thermostat calls for heat, the zone valve opens, the system pump is turned on and the boiler is fired. Mechanical - - - - - - -- - - ------- ---------- ----------- ------ --------------------- ---------------------------- Legend B1 = Boiler 304V PS = System Pump T1 = WiFi Thermostat 561 or 562 T2 = Thermostat 518 or 519 T3 = Generic Digital Power-Stealing Thermostat T4 = Generic Bi-Metallic Strip Thermostat V1 to V4 = 2-Wire Zone Valves Electrical - - - - - - - - -- - - ------- ---------- ----------- ----- ---------------------- ---------------------------- DIP Switches Master T-stat 1 Priority = Off...

  • Page 5: Application 304V-2

    Application 304V–2 The Zone Valve Control 304V operates a three heating zones and a domestic hot water tank. When a thermostat calls for heat, the zone valve opens and the system pump and the boiler turn on once the zone valve end switch closes. The domestic hot water tank is heated using a pump. When priority is selected, the heating zones are shut off while the hot water tank is heated. Mechanical - - - - -- - - - - --------- ----------- ---------- ----------------- --------------------- --------------- Legend A1 = DHW Tank Aquastat B1 = Modulating Condensing Boiler 304V Power BP = Boiler Pump PS = System Pump P1 = Zone 1 DHW Tank Pump T1 = WiFi Thermostat 561 or 562 T2 = Thermostat 518 or 519 T3 = Generic Digital Power-Stealing Thermostat V1 = 2-Wire Zone Valve V2 = 3-Wire Zone Valve (e.g. Taco 570) V3 = 4-Wire Zone Valve Electrical - - - - - - - - - - - - ----------- ------------------- ----------------- --------------------- --------------- DIP Switches Master T-stat 1 Priority = On...

  • Page 6: Application 304V-3

    Application 304V–3 Two Zone Valve Control 304V operate seven heating zones and a domestic hot water tank. When a thermostat calls for heat, the zone valve opens. The hot water tank is heated using a pump when the tank aquastat calls for heat. The master control operates the system pump and the boiler when there is a call for heat on either the master or member control. Mechanical - - - - - - -- - - - - ---------- ----------- --------- ------------------ --------------------- ------------ Legend A1 = DHW Tank Aquastat P1 = Zone 1 DHW Tank Pump T6 = Generic Digital Power-Stealing Thermostat T1 to T3 = WiFi Thermostat 561 or 562 T7 = Generic Bi-Metallic Strip Thermostat B1 = Modulating Condensing Boiler T4, T5 = Thermostat 518 or 519 V1 to V7 = 4-Wire Zone Valves BP = Boiler Pump PS = System Pump Expansion 304V 304V Power Electrical - - - - - - - - - - - - - -- ----------- ------------------ ----------------- ---------------------- ------------ End switch jumper required for Zone 1 when using a pump and Zone Valve End Switch DIP = On C R Rh W...

  • Page 7: User Interface

    User Interface - Indicator LED Power Zone 1 Call • On when 115 V (ac) is applied. • On when thermostat 1 calls for heat. • Off when power disconnected or transformer fuse is blown. • Off when thermostat 1 stops calling for heat. Priority Zones 2 to 4 Call • On when zone 1 has priority over zones 2 to 4. • On when the corresponding thermostat calls for heat. • Flashing while in priority override. • Off during priority operation. • Off when corresponding thermostat stops calling for heat. RoomResponse Zones 1 to 4 Valve Open • On when modulating condensing boiler is operating below maximum setting.

  • Page 8: Technical Data

    Expansion Terminals 70 80 Connect the five wires of the expansion bus from the master to the member controls. Terminal Description A/tN4 Away signal connecting tekmar thermostats RoomResponse signal from member controls Power common Demand signal. 0 Vdc = demand. 2 Vdc = no demand MOD MAX % Priority signal. 0 Vdc = priority. 2 Vdc = no priority RoomResponse Signal Mod Max % dial set to 100% in the illustration. FUSE 6 The RoomResponse signal adjusts the temperature of a • Reduction in expansion noises from heating pipes modulating condensing boiler that accepts a 0-10 V(dc) or 4-20 Mod Max % Dial mA signal input. It works by continually adjusting boiler water temperatures to the lowest possible value to meet comfort 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 without wasting energy. This is done by monitoring each thermostat's on and off time pattern and determines the ideal % Dial. This sets the upper temperature limit for the boiler. water temperature for each zone. The control then chooses the The dial is only applicable to controls set as the Master.
  • Page 9 Aerco AM Series - - ------- ---------- --------- ---- Camus Modulating MicoFlame -- ---------------- – – – – Camus 304V Aerco AM 304V Micoflame • No changes to the boiler are required. • Change control to mode 6 in the control parameters. Bosch Greenstar - -------- ----------- --------- -- Heat Transfer Products Elite - -------------------- –...
  • Page 10 Laars Mascot FT - - - - - - ---------- ----------- ----- NTI Trinity FireTube - ------------------ ----------- – – – – Laars 304V Mascot FT 24Vac I/O 304V Sensor I/O • No changes to the boiler are required. NTI Trinity Fire Tube • Enter boiler password. Lochinvar Knight - - - - - --- ----------- --------- ---- • Set Parameter "Setpoint source" to 4-20mA Peerless Pinnacle PF-200, 210, 300, 399 ---------...
  • Page 11 Raypak MVB and XTherm - ----------- --------- -- Weil-McLain Evergreen -------------------------- – – – 304V Weil-McLain – 13 14 17 18 Evergreen P15 • Use Local Priority 1 for DHW tank heating. Raypak MVB or 304V • Use Local Priority 2 for the RoomResponse signal. XTherm • Set Local Priority 2 Supply Min to 60°F. • Set boiler PIM DIP switch 2 to Down. • Set Local Priority 2 Supply Max to 180°F. • Set boiler PIM DIP switch 5 to Up. • Set Local Priority 2 Volts For Min to 2 V.

  • Page 12: Limited Warranty And Product Return Procedure

    California to cause cancer and birth defects or other reproductive harm. Purchaser’s sole responsibility and obligation. Purchaser shall indemnify and hold For more information: Watts.com/prop65 All specifications are subject to change without notice Tel: (250) 545-7749 • Fax: (250) 984-0815 tekmarControls.com...

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