User Guide

ManualsBrandsTekmar ManualsBoiler/DHW ControlsBoiler Control - One Stage Boiler & DHW

1 of 8

- Application

Boiler Control 260

A 260-1

03/09

Note:

This is only a concept drawing. The designer must determine whether this application will work in his system and must ensure compliance with

code requirements. Necessary auxiliary equipment, isolation relays (for loads greater than the specified tekmar internal relay ratings), and other safety

and limit devices must be added.

Outdoor

Sensor (S2) 070

Boiler

Sensor

(S1) 082

Z1Z2Z3

Class 2

Transformer

120 V (ac)

24 V (ac)

260

Mechanical

Zone Valve

Motor End

Switches

Boiler

260

12468 10 11

Boiler

Demand

Power

Boil

Do not apply power

13 14 15 16 17 18

Com

UnO

Com

Boil

Out

Indr

DHW

Demand

P1 N

DHW

Pmp/Vlv

Boiler

10A

10A10A

24 V (ac)

120 V (ac)

Class 2

Transformer

Electrical

P1 = Boiler Pump

S1 = Boiler Sensor 082

S2 = Outdoor Sensor 070

T1, ..., T3 = Thermostats

U1 = tekmar Timer 033 (optional)

Z1, ..., Z3 = Zone Valve Motor End Switches

Off

Installer

Advanced

DHW during UnOcc

DHW Pump

Off

DHW Priority

DHW Valve

= Not Used

= Required

= Optional

Summary of content (8 pages)

PAGE 1
- Application A 260-1 03/09 Boiler Control 260 Mechanical 260 Outdoor Sensor (S2) 070 Class 2 Transformer 24 V (ac) 120 V (ac) Z3 Z2 Z1 M M M T2 T3 T1 Boiler Sensor (S1) 082 Electrical 10A 10A P1 260 10A Do not apply power P1 = Boiler Pump S1 = Boiler Sensor 082 S2 = Outdoor Sensor 070 T1, ..., T3 = Thermostats U1 = tekmar Timer 033 (optional) Z1, ...
PAGE 2
A 260-1 03/09 System Operation The Boiler Control 260 provides partial or full outdoor reset to three (or more) boiler zones. The boiler is operated at the temperature required in order to satisfy the load. Heat Source Details The heat source can be either a high mass or low mass non-condensing or low temperature boiler. Piping Details Thermostat controlled zone valves are piped into the boiler loop. The boiler pump (P1) provides circulation through these zones when heat is required.
PAGE 3
- Application A 260-2 03/09 Boiler Control 260 Mechanical 260 Outdoor Sensor (S2) 070 Class 2 Transformer 24 V (ac) 120 V (ac) A2 Z3 Z2 M M T3 A1 Z1 M T2 T1 M V1 DHW Tank P1 Boiler Sensor (S1) 082 10A 10A Electrical 260 10A Do not apply power A1 = DHW Aquastat A2 = DHW High Limit Aquastat P1 = Boiler Pump S1 = Boiler Sensor 082 S2 = Outdoor Sensor 070 T1, ..., T3 = Thermostats U1 = tekmar Timer 033 (optional) V1 = DHW Valve Z1, ...
PAGE 4
A 260-2 03/09 System Operation The Boiler Control 260 provides partial outdoor reset to three (or more) boiler zones. The 260 also controls the supply of heat to an indirect fired Domestic Hot Water (DHW) tank. The boiler is operated at the temperature required in order to satisfy the loads. Heat Source Details The heat source can be either a high mass or low mass non-condensing boiler. Piping Details Thermostat controlled zone valves are piped into the boiler loop.
PAGE 5
- Application A 260-3 03/09 Boiler Control 260 Mechanical 260 Outdoor Sensor (S2) 070 Class 2 Transformer 24 V (ac) 120 V (ac) A2 Z3 Z2 M M T3 A1 Z1 M T2 T1 DHW Tank P2 Boiler Sensor (S1) 082 P1 10A 10A Electrical 260 10A Do not apply power A1 = DHW Aquastat A2 = DHW High Limit Aquastat P1 = Boiler Pump P2 = DHW Pump S1 = Boiler Sensor 082 S2 = Outdoor Sensor 070 T1, ..., T3 = Thermostats U1 = tekmar Timer 033 (optional) Z1, ...
PAGE 6
A 260-3 03/09 System Operation The Boiler Control 260 provides partial or full reset to three (or more) boiler zones. The 260 also controls the supply of heat to an indirect fired Domestic Hot Water (DHW) tank. The boiler is operated at the temperature required in order to satisfy the loads. Heat Source Details The heat source can be either a high mass or low mass non-condensing or low temperature boiler.
PAGE 7
- Application A 260-4 03/09 Boiler Control 260 Mechanical 260 Outdoor Sensor (S2) 070 Class 2 Transformer 24 V (ac) 120 V (ac) A2 R1 Z1 R2 T1 R3 T2 Z2 A1 T3 Z3 P1 DHW Tank Boiler Sensor (S1) 082 Electrical 10A 10A 260 10A Do not apply power A1 = DHW Aquastat A2 = DHW High Limit Aquastat P1 = DHW Pump R1, ..., R3 = Relay 003 S1 = Boiler Sensor 082 S2 = Outdoor Sensor 070 T1, ..., T3 = Thermostats U1 = tekmar Timer 033 (optional) Z1, ...
PAGE 8
A 260-4 03/09 System Operation The Boiler Control 260 provides partial or full reset to three (or more) boiler zones. The 260 also controls the supply of heat to an indirect fired Domestic Hot Water (DHW) tank. The boiler is operated at the required temperature in order to satisfy the loads. Heat Source Details The heat source can be either a high mass or low mass non-condensing or low temperature boiler.