HeatLink TWH070P, TWH070XP Installation, Operation And Maintenance Manual

Heat Link

®

TWH070P, TWH070XP

Tankless Water Heater Panels
Installation, Operation, and Maintenance Manual

™

MECHANICAL

ROOM IN A BOX

L6TWH000P

Heat Link

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Table Of Contents

Warnings ........................................................................................................................3

Tools Needed ...............................................................................................................3

Function .........................................................................................................................4

Unpacking .....................................................................................................................4

Panel Components ....................................................................................................5

Speci cations ...............................................................................................................6

Dimensions ...................................................................................................................7

Panel Component Speci cations .........................................................................7-9

Valve Adjustments .....................................................................................................9

Mounting.......................................................................................................................10

Piping Hookup ............................................................................................................11

Fill and Purge ..............................................................................................................12

Panel Wiring .................................................................................................................13

Panel Control Sequence ...........................................................................................14

DHW Priority Switch Installation ...........................................................................15

Troubleshooting .........................................................................................................16-17

Maintenance ................................................................................................................17

Schematics

Mechanical ...............................................................................................................18-25

Electrical Rough-in ................................................................................................26-27

Electrical Detail .......................................................................................................28-34

®

Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

2

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Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

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Warnings

The zone control panel is for indoor use only and must be installed by a quali ed installer/service technician. This product
must be installed and operated in strict accordance with the terms set out in this manual and in accordance with the relevant
requirements of the Local Authority Having Jurisdiction. Failure to comply will result in a void of warranty, and may also result
in property damage, serious injury, or death.

Servicing

Prior to commencing installation of this panel it is necessary to read and understand all sections of this manual. The
symbols below are used throughout this document to ensure proper operation of the panel, and your safety. Please pay
attention to these symbols.

Warning

Possible Hazard

In order to avoid injury or death, switch o the power to the panel prior to
inspecting or making connections to the terminal strip.

Disclaimer

HeatLink Group Inc. shall not be responsible for errors in its brochures or printed materials. HeatLink Group Inc. reserves
the right to alter its products at any time without notice, provided that alterations to products already on order shall not
require material changes in speci cations previously agreed upon HeatLink Group Inc. and the Purchaser. All trademarks
in this material are property of the respective companies. HeatLink and the HeatLink logotype are trademarks of HeatLink
Group Inc. All rights reserved.

Tools For Installation

• Level

• Screwdriver or power drill

• Flat head bit

• Phillips head bit # 2

• 2 adjustable wrenches (or 2× 30mm wrenches and 2× 40mm wrenches)

Warning

Live Power

Warning

Hot Pipes

Warning

Treated Water

3

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Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

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Function

This panel can provide mixing, distribution, and zoning for a wide variety of hydronic heating applications.

The e ectiveness of the system is dependant on the system being designed and installed correctly. Proper consideration
of factors such as BTU loads, outdoor design temperature, indoor design temperature, room set-point temperature(s),
di erential  uid temperatures, head loss,  ow rates, and transfer capacities of the heat emitters is critical.

Once these factors have been considered and the system requirements determined, these can then be evaluated and
compared to the zone control panel capabilities (refer to pages 5-9).

Note: This panel does not regulate or monitor the operating safety limit temperatures of the  uid leaving the heat source.

Unpacking

Step 1 Examine carton for any damage that may have occurred during shipping. If damage is visible notify your courier and

supplier immediately.

Step 2 Open the carton by removing the staples.

Step 3 Remove the cardboard spacers from the carton, then remove the panel from the carton. Lift the panel by the base,

not the enclosure.

Step 4 There are 2 screws holding the enclosure in place during shipping. They are located at the top left & right of the panel

base. Remove these 2 screws.

Step 5 Remove the enclosure from the panel by sliding it upwards until it stops, then gently pulling outwards o .

Side View

To p

Screws

Step 6 Verify the following items:

• (4) Mounting screws

• (4) ¾" MBSP x 1" FNPT adapters

• (6) ¾" rubber washers (2 spares)

• (2) 1" rubber washers (spares)

Bottom

4

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Panel Components

®

Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

TWH070P

1

TWH070XP

4

3

5

2

7

1

3

8

4

5

2

6

Part Number

# Component

1

Primary Circulator PUMP1558 PUMP2699BR

2

Secondary Circulator PUMP1558 PUMP1558

3

Thermostatic Mixing Valve – –

4

Power Box with 6' Power Cord PWRB7R2 PWRB7R2

5

Thermometer 76940 76940

6

Enclosure n/a n/a

Accessory Pack ACCTWH ACCTWH

7

3⁄4" Washer WHTWSH34 WHTWSH34

1" Washer NTRWSH1 NTRWSH1

Flow Switch for DHW Priority

8

(optional, sold separately)

TWH070 TWH070XP

FLWSWTCH FLWSWTCH

5

®

3

1

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Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

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Speci cations

Listing cETLus
Conforms to CAN/CSA-C22 No.14, UL508
Dimensions 18.25"H x 16.25"W x 8"D
Nominal panel output 70,000 btu/hr 70,000 btu/hr
Primary nominal fl ow 4.0 US gpm @ 35°F ΔT 4.0 US gpm @ 35°F ΔT
Primary nominal pressure drop outside of panel 14 ft 24 ft
Secondary nominal fl ow 7 US gpm @ 20°F ΔT 7 US gpm @ 20°F ΔT
Secondary nominal pressure drop outside of panel 4 ft 4 ft
Max ambient temperature 120°F
Max water temperature 200°F
Min required fl ow for correct temp control 1.3 US gpm (5 L/min)
Power supply: pre-wired on system controller 110 V(ac)

Primary circulator

Secondary circulator

Auxiliary terminal Yes
DHW priority Optional @ ~0.5 US gpm DHW fl ow
Temperature control method 1" 3-Way thermostatic
Temperature control range 100°F - 145°F
Valve Cv 3.0
Piping
Piping connections 1" FNPT
DHW priority switch connection
Backplate Galvanized steel
Enclosure Powder coated steel

TWH070P TWH070XP

Non-ferrous, Grundfos

UPS15-58CIL2

Non-ferrous, Grundfos

UPS15-58CIL2

⁄4" 304 Stainless steel tubing

⁄2" FNPT (FLWSWTCH optional)

Non-ferrous, Grundfos

Non-ferrous, Grundfos

UPS26-99BFC

UPS15-58CIL2

20.0

18.0

16.0

14.0

12.0

10.0

FT HD

8.0

6.0

4.0

2.0

0.0

TWH Series FT HD Outside of Panel

12345678

US GPM

6

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Dimensions

®

Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

18.250”

3.602”

1.563”

2.936”

7.998”

Panel Component Speci cations

16.250”

7.908”

1.563”

3.570”

7.533”

Power Box

This module provides the required power for all electronic
components on the panel, via the ON/OFF switch. Power box may
not be exactly as shown.

Speci cations:

• Requires 115V power source.

• Requires a maximum 15A circuit breaker.

7

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Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

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Circulators

The circulators moves the heated  uid through the hydronic system when there is a call for heat from the thermostat. Primary
pump on the TWH070XP is a UPS26-99BFC.

Speci cations:

• The following pump curves apply.

UPS15-58CIL2 Pump Curve

20

18

16

14

12

10

8

Head (feet)

6

4

2

0

0246810121416

Flow (gpm)

1st Speed 2nd Speed 3rd Speed

8

UPS26-99BFC Pump Curve

35

30

25

20

15

Head (feet)

10

5

0

0 5 10 15 20 25 30 35

Flow (gpm)

1st Speed 2nd Speed 3rd Speed

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®

Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

Indicator

on back

3-Way Thermostatic Mixing Valve (TMV)

The TMV controls the temperature of the hydronic system via a
self regulating thermostat.

MINMAX7

1

2

Setting the TMV

The indicator for the valve is located at the base of the knob on
the back. The mixed (desired) temperature is a function of the
TMV setting.

MIX

See the below chart to determine the proper setting for you
system. After allowing the system to run for a short period, verify
the setting and adjust if necessary.

Unit

°F 81 90 100 111 120 127 136 145 152

°C 27 32 38 44 49 53 58 63 67

Min. 1234567Max.

Mixed Fluid Temperature

Flow Switch for DHW Priority (FLWSWTCH)
(optional, sold separately)

The electronic  ow indicator provides DHW priority when the
DHW  ow rate reaches a factor pre-set level (approx. 0.5 US
gpm). Must be piped in downstream of panel (see schematic on
page 15).
Mounted separately from the panel (see page 15).

Thermometer (76940)

The pipe mounted thermometer reads the supply  uid
temperature.

Speci cations:

• Temperature range of 32-210°F (0-100°C).

9

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®

Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

Mounting

Prior to mounting the panel, ensure the wall is capable
of supporting the weight of the panel.
Ensure that a 115V receptacle is within reach of the
6-foot cord and plug.

Step 1 Determine the locations and distance

between the wall studs. With a level at a
minimum height of 4' from the  oor draw a
straight line on the wall and mark the stud
locations.

If the panel cannot be secured directly to the

studs, or suitable backing boards, plywood
may need to be installed behind the panel to
properly secure it in place.

Step 2 Screw two of the supplied mounting screws

into the wall studs (or backing plywood) 2"
from the top of desired height, and 10-½"
apart, leaving ¼" of screw out from the wall.

Step 3 Lift and place the panel onto the mounting

screws.

min. 4'
from fl oor

Wall Stud

1

2"

10-½"

⁄4"

Step 4 Screw the two remaining mounting screws

into the holes at the bottom of the panel and
tighten the top two screws.

Step 5 Before replacing the enclosure, refer to pages

12-14 for  ll and purge, and proper wiring
instructions.

10

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Piping Hookup

Step 1 Before making any connections, identify the

required connections to and from the panel.

Adapters are ¾" M BSPP x 1" FNPT, and must use

the supplied adapters and rubber washers.

Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

Step 2 Connect all adapters.

1. Connect MNPT adapter E to copper pipe or
tubing F.

2. Screw supplied M x FNPT adapter D onto E
using appropriate thread sealant.

3. Take assembly

D E F

and place rubber

washer C on  at surface of D.

4. Without disturbing rubber washer C, place
assembly against  anged stainless steel pipe

B

.

5. Slide nut

A

over adapter D and  rst  nger
tighten nut. Then, using two 30mm wrenches,
tighten the nut taking care not to overtighten
the nut, as this will damage the rubber washer.

Step 3 See page 15 for instructions on connecting

the optional Flow Switch for DHW Priority
(FLWSWTCH).

A

Primary Supply

1

Primary Return

2

Secondary Supply

3

Secondary Return

4

4

312

C

D

E

F

B

Note: Use precautions when soldering or applying heat within 16" of the panel.

Do not overtighten brass nuts!

11

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Fill And Purge

The following steps are recommended in order to  ll the panel
with water and purge entrained air once piping is completed,
and before activation of the panel.

The discharged system  uid from the  ll and purge
process is not for consumption or washing.

Note: Additional purging steps may be required for the rest of

the hydronic system.

Note: Isolation and drain valves are not included with the

panel, but are necessary to properly  ll and purge the
panel, and to isolate the panel for service.

Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

E F

Step 1 Ensure the panel is not plugged in.

Step 2 Adjust the thermostatic mixing valve to a position of

“Max.“ (see page 9).

Step 3 Fully close valves A, B, C, D,and F.
Fully open valve E.

Step 4 Attach a purge hose (not included) to E and a  ll

hose (not included) to F. Open valve F.

Step 5 When exiting water from E is free of bubbles, close

valve E, then valve F.

Step 6 Remove hoses from drain valves and full open valves

A, B, C

Step 7 Check for leaks at connections. If any leaks are found,

use a back-up wrench and carefully tighten until leak
stops. Do not overtighten.

Step 8 Readjust the setting of the thermostatic mixing valve

to provide a proper mixed  uid temperature to the
hydronic system (see page 8).

, and D.

A B C D

12

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Installation, Operation, and Maintenance

Panel Wiring

Note: Terminal headers are removable to make wiring connections easier.

Thermostat Wiring

• 24V low voltage power may be supplied to the thermostat. Wiring of thermostat
should be done by quali ed electrician and should meet local codes and
jurisdictions. Wiring to the terminal strip requires 18 gauge 4 wire.

• Do not exceed 2VA per thermostat.

• Do not cross terminals C and R – this will damage the Power Box.

TWH – Tankless Water Heater Panels

Factory Jumper

24 V

Signal

Do not remove.

WRC AUX

2-Wire Thermostat

(battery only or non-electric)

Signal

WRC AUX

3-Wire Thermostat

(HeatLink thermostats)

Factory Jumper

24 V

24 V

Do not remove.

24 V

24 V

Dry Contact

Factory Jumper
Do not remove.

Signal

Jumper to

WRC AUX

4-Wire Thermostat

(with dry contact signal)

Other Terminals

Auxiliary Contacts The auxiliary contact set is dry, meaning no supply of power is present at the terminal. The

maximum allowable load is 2A. The auxiliary dry contact located on the terminal is to switch
another device (ie. the heat source) when there is a call for heat from any zone.

DHW Priority Contacts The wiring harness of the optional Flow Switch for DHW Priority (FLWSWITCH) plugs into these

contacts (see page 15).

13

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Installation, Operation, and Maintenance

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Panel Control Sequence

1. When the power cord 1 from the power module is plugged in, and the Power switch located on the front of the module
is placed in the on position the red LED will be lit, indicating that the panel is powered with 110V.

2. The factory setting for the BYPASS switches 2 are to remain in the OFF position. Only switch the front 3-way switch to
“Heat Source Pump Bypass“ or Radiant Pump Bypass switch to ON if the red and green LED’s on the power module do not
light up during a call for heat. Please refer to the troubleshooting section of the manual for further details.

3. When a thermostat calls for heat, its internal 24V contacts close, the auxiliary terminals close, and both circulators 3
turn on.

4. As the circulators move  uid through the panel the thermostatic mixing valve adjusts the  uid temperature based on the
user settings (page 8).

5. When the requirements of the thermostat are met, the internal contacts of the thermostat open, the auxiliary contacts
open, and the circulators stop.

6. Both the primary and secondary circulators are activated once every 24 hours, for 15 minutes, to ensure that potable
water in the piping is not stagnant.

Note: If the FLWSWTCH optional DHW priority  ow switch 4 is installed and the DHW  ow is above the factory setting for

this device, the primary pump stops. When the DHW  ow drops below the factory setting the primary pump resumes
and the panel returns to normal operation.

4

2

3

14

1

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Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

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Flow Switch for DHW Priority (FLWSWTCH) Installation (optional, sold separately)

Installation Notes:

• Makes sure the cable to the  ow switch isn't under tension.

• Clean the pipe system in which the  ow switch is to be installed and remove any magnetic

particles, e.g. welding residue.

• The straight in- and outlet pipe (in front of and behind the  ow switch) has to be at least

2-1⁄2" (65 mm).

• The  ow switch should be installed in an “upright standing position” in horizontal pipework.

• The switch should only be installed in a vertical position, deviation max. 45°.

• Make sure that ther are no external magnetic  elds or large ferromagnetic

bodies in the immediate vicinity of the  ow switch, since these can impair
device functioning.

• Screw on the union plastic nut with a maximum torque of 8 Nm.

• To prevent overheating when soldering near the  ow switch, the  ow switch

(body with paddle system) and the o-ring must be removed from the pipe
section.

max. 45°

Step 1 DHW connectors are 1⁄2” FNPT. Using appropriate thread sealant and

 ttings, connect the water heater output to the input on the  ow
switch; and house hot water system to output on  ow switch.
The straight in- and outlet pipe (in front of and behind the  ow

switch) has to be at least 2-1⁄2" (65 mm).
Observe  ow direction when making connections.
Be sure to connect the DHW priority downstream from the panel

(see schematic below).

Heat

Source

FS

FLWSWTCH

DHW Priority Switch

DHW Supply

to House

Thermostat

Heating Load

Min. 2-1⁄2" (65 mm)Min. 2-1⁄2" (65 mm)

Step 2 Turn the panel o . Plug the terminal header of the wiring

harness into the DHW priority contacts of the power box.

Terminal Header

of Wiring Harness

15

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Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

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Troubleshooting

Problem Check / Verify Possible Cause

Low Temperature Within Room

High Temperature Within Room

Misplacement of thermostat location within
room.

Low temperature setting of the thermostat. Adjust the temperature setting on thermostat.

The system fails to turn on if the thermostat is
set to high setting

The electronic actuator fails to open during a
call for heat

Low supply mixed fl uid temperature. Adjust the thermostatic mixing valve to the

Wiring from heat source to panel. Check that the wiring is done properly. Consult

Output of heat source is unable to meet
demand of heating system.

The red and green LED’s on the power module
do not light up during a call for heat.

Circulator is not on during a call for heat. (Use
a stethoscope or similar device to verify)

When zone valves are installed outside the
panel a qualifi ed electrician should verify 24V
power is supplied to the thermostats and
actuator.

Check current setting of the thermostat. Adjust the temperature setting on thermostat

High supply mixed fl uid temperature. Adjust the Thermostatic Mixing Valve to the

Installed electronic actuators remain open
after the thermostat is satisfi ed.

Bypass switch(es) may be on. Check that the front three-way switch on the

Make sure thermostat is not being infl uenced
by an additional heat source, such as lighting
or air duct.

Thermostat may be out of calibration or
defective. Replace thermostat.

The electronic actuator may be improperly
seated or may be defective. Replace if
necessary.

appropriate setting.

qualifi ed electrician prior to alteration of wiring
between heat source and panel.

Compare output of heat source to the
requirements of the heating system.

The zone valve controller may be defective
or there is no power being supplied to the
panel or the power module is not on. If this
is so, switch the power module to by-pass
mode. When the front three-way switch is
placed in the “Heat Source Pump Bypass”
position, the green LED will be lit, indicating
that the panel is powered with 110V, and the
Primary pump will run. When the side “Bypass
Radiant Pump” switch is placed in the “ON”
position, the yellow LED will be lit, indicating
that the panel is powered with 110V, and the
Secondary pump will run. This will provide
constant circulation so long as there is still
110V power to the panel.

The power box or circulator may be defective.

The 24V transformer may have failed. If this
so, switch the power module to Bypass mode.
This will provide constant circulation so long
as there is still 110V power to the panel. Prior
to Bypass mode selection, any zone valves
must be opened manually to avoid dead­heading of the circulator.

to a lower setting.

appropriate settings.

An obstruction inside the zone valve is not
allowing the actuator to fully close or the
thermostat is still calling for heat.

power box is in the “ON” position and the side
“Bypass Radiant Pump” switch is in the “OFF”
position.

16

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Troubleshooting (continued)

Temporarily create a “permanent” heat demand:

With switch in ‘ON’
position, red ‘POWER’
light will be on.

With jumper between
W & R, green and yellow
lights will be on and
pumps will run.

Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

Install Jumper
between W & R

(closed when
pump running)

Maintenance

Yearly maintenance should be done on the panel prior to each heating season to ensure the e cient and accurate operation
of the panel.
Complete the following check list:

• Raise all thermostats to cause a call for heat within the system. Verify that the circulator starts, via a stethoscope or

similar device.

• Con rm that the Auxiliary Contacts close.

• If applicable, verify that each zone valve opens during the call for heat – the actuator should be warm to the touch, the

LED will light up (on 5620x models) and the white indicator should rise from the top of the actuator.

• Return all thermostats to a desirable setting.

You are now ready for another heating season with HeatLink.

17

SCH-MRIB-R001

SCH-TWH-M002

SCH-TWH-E001

Schematic #:

Thermostat

Panel

TWH070P/

TWH070XP

T

Manifold

Radiant Heating

to House

DHW Supply

FS

Optional

T

DHW Priority Switch

Tankless Water Heater

Heat Source:

Rough-in wiring see:

TWH Series

Radiant Floor Heating – Single Zone

Panel(s):

Heat Load(s):

Wiring detail see:

2013-03-18

Date:

Pump

Check

Primary

Valve in

180

18

Supply

Cold Water

Drawings are for HeatLink suggested system layout only! User must determine

if system layout will work for their particular application.

Air vents, expansion tanks, pressure relief valves, etc. for heat source as per

local codes.

Use isolation ball valves for all circuits and components.

Notes:

Local codes, regulations, and authorities have final jurisdiction.

1-866-661-5332

www.heatlinkgroup.com

Thermostat

Manifold

Radiant Heating

DHW Supply

FS

to House

Optional

SCH-MRIB-R001

SCH-TWH-M003

SCH-TWH-E003

Schematic #:

Wiring detail see:

Rough-in wiring see:

Check

Panel

TWH070P/

TWH070XP

T

Pump

Primary

Valve in

T

DHW Priority Switch

Tankless Water Heater with Storage Tank

TWH Series

Radiant Heating – Single Zone

2013-03-18

Panel(s):

Heat Source:

Heat Load(s):

Date:

Storage Tank

180

Check Valve

R1

in Pump

P3

Drawings are for HeatLink suggested system layout only! User must determine

if system layout will work for their particular application.

Air vents, expansion tanks, pressure relief valves, etc. for heat source as per

local codes.

Use isolation ball valves for all circuits and components.

Local codes, regulations, and authorities have final jurisdiction.

Cold Water

Notes:

Supply

1-866-661-5332

www.heatlinkgroup.com

19

SCH-MRIB-R001

SCH-TWH-M004

SCH-TWH-E004

Schematic #:

Thermostat

Panel

TWH070P/

TWH070XP

T

Manifold

Radiant Heating

to House

DHW Supply

FS

Optional

T

DHW Priority Switch

Tankless Water Heater with High Flow Resistance

Heat Source:

Rough-in wiring see:

TWH Series

Radiant Floor Heating – Single Zone

Panel(s):

Heat Load(s):

Wiring detail see:

2013-03-18

Date:

Pump

Check

Primary

Valve in

180

20

R1

P3

In Series Pump

Supply

Cold Water

Drawings are for HeatLink suggested system layout only! User must determine

if system layout will work for their particular application.

Air vents, expansion tanks, pressure relief valves, etc. for heat source as per

local codes.

Use isolation ball valves for all circuits and components.

Notes:

Local codes, regulations, and authorities have final jurisdiction.

1-866-661-5332

www.heatlinkgroup.com

SCH-MRIB-R001

SCH-TWH-M005

SCH-TWH-E005

Schematic #:

Rough-in wiring see:

TWH Series

Radiant Floor Heating – Single Zone

Panel(s):

Heat Load(s):

Wiring detail see:

2013-03-18

Date:

P3

by heater or timer.

Non-ferrous pump controlled

Manifold

Radiant Heating

Farthest

Fixture

DHW Supply

T

FS

to House

Optional

DHW Priority Switch

Tankless Water Heater

Heat Source:

Thermostat

Panel

TWH070P/

TWH070XP

T

Pump

Check

Primary

Valve in

180

Drawings are for HeatLink suggested system layout only! User must determine

if system layout will work for their particular application.

Air vents, expansion tanks, pressure relief valves, etc. for heat source as per

local codes.

Use isolation ball valves for all circuits and components.

Local codes, regulations, and authorities have final jurisdiction.

Supply

Cold Water

Notes:

1-866-661-5332

www.heatlinkgroup.com

21

SCH-TWH-M006

SCH-MRIB-R001

SCH-TWH-E006

Schematic #:

Wiring detail see:

Thermostat

Manifold

Rough-in wiring see:

Radiant Heating

Recommended

Panel

TWH070P/

TWH070XP

T

Sidestream Filter

Boiler

Heat Source:

TWH Series

Radiant Floor Heating – Single Zone

Panel(s):

Heat Load(s):

2013-03-18

Date:

Check

Primary

Valve in

Pump

Supply

Cold Water

Boiler

Drawings are for HeatLink suggested system layout only! User must determine

if system layout will work for their particular application.

Air vents, expansion tanks, pressure relief valves, etc. for heat source as per

local codes.

Use isolation ball valves for all circuits and components.

Notes:

Local codes, regulations, and authorities have final jurisdiction.

1-866-661-5332

www.heatlinkgroup.com

22

SCH-TWH-M007

SCH-MRIB-R002

SCH-TWH-E002

Thermostats

T

Thermostat

Manifold

Radiant Heating

Schematic #:

Wiring detail see:

Manifold

Rough-in wiring see:

Radiant Heating

Recommended

Panel

TWH070P/

TWH070XP

Pressure

Bypass Valve

Recommended

Sidestream Filter

Boiler

Heat Source:

TWH Series

Radiant Floor Heating – Multiple Zones

Panel(s):

Heat Load(s):

2013-04-30

Date:

Check

Primary

Valve in

Pump

Supply

Cold Water

Boiler

Drawings are for HeatLink suggested system layout only! User must determine

if system layout will work for their particular application.

Air vents, expansion tanks, pressure relief valves, etc. for heat source as per

local codes.

Use isolation ball valves for all circuits and components.

Notes:

Local codes, regulations, and authorities have final jurisdiction.

1-866-661-5332

www.heatlinkgroup.com

23

SCH-MRIB-R001

SCH-TWH-M008

SCH-TWH-E001

Schematic #:

Wiring detail see:

Rough-in wiring see:

Check

Thermostat

Panel

TWH070P/

TWH070XP

T

Pump

Primary

Valve in

Manifold

Radiant Heating

Recommended

Sidestream Filter

Tankless Water Heater

Heat Source:

TWH Series

Radiant Floor Heating – Single Zone

Panel(s):

Heat Load(s):

2013-04-30

Date:

Supply

Cold Water

24

Drawings are for HeatLink suggested system layout only! User must determine

if system layout will work for their particular application.

Air vents, expansion tanks, pressure relief valves, etc. for heat source as per

local codes.

Use isolation ball valves for all circuits and components.

180

Notes:

Local codes, regulations, and authorities have final jurisdiction.

1-866-661-5332

www.heatlinkgroup.com

SCH-TWH-M009

SCH-MRIB-R002

SCH-TWH-E007

Thermostats

Thermostat

Manifold

Radiant Heating

Schematic #:

Wiring detail see:

Rough-in wiring see:

Manifold

Radiant Heating

Recommended

Panel

TWH070P/

TWH070XP

Pressure

T

Bypass Valve

Recommended

Sidestream Filter

Tankless Water Heater

TWH Series

Radiant Floor Heating – Single Zone

2013-04-30

Panel(s):

Heat Source:

Heat Load(s):

Date:

Supply

Cold Water

Check

Pump

Primary

Valve in

Drawings are for HeatLink suggested system layout only! User must determine

if system layout will work for their particular application.

Air vents, expansion tanks, pressure relief valves, etc. for heat source as per

local codes.

Use isolation ball valves for all circuits and components.

Notes:

180

Local codes, regulations, and authorities have final jurisdiction.

1-866-661-5332

www.heatlinkgroup.com

25

1

SCH-MRIB-R001

2

2

Heating Load

4

Rough-in Wiring for One Zone Heating

2012-10-19

Heat

Source

Application: Schematic #:

Drawings are for HeatLink suggested electrical schematics only! User must

Notes:

Room Thermostat

Standard 4-wire to be run from thermostat to mechanical room.

Floor Sensor (optional)

Standard 2-wire to be run from thermostat to floor sensor.

1

2

Date:

determine if electrical schematic will work for their particular application . User

must also confirm all HeatLink schematics with manufacturer schematics of each

particular control chosen.

In all cases manufacturer equipment schematics will take precedence over

HeatLink electrical schemat ics.

Local codes, regulations, and authorities have final jurisdiction.

26

1-866-661-5332

www.heatlinkgroup.com

SCH-MRIB-R002

22

444 4 4

2

Manifold #2 Location

4

1 1

5 5

3

2

6

Optional

Allow for 110V power source to a 24V transformer at each manifold location instead

of supplying 24V power from the mechanical room.

Floor Sensor (optional)

Standard 2-wire to be run from thermostat to floor sensor.

4

2 2 2

Manifold #1 Location

4

6

5

Rough-in Wiring for Multiple Zone Heating with

StatLink

2012-10-19

Application: Schematic #:

Date:

Mechanical Room

Drawings are for HeatLink suggested electrical schematics only! User must

determine if electrical schematic will work for their particular application . User

must also confirm all HeatLink schematics with manufacturer schematics of each

particular control chosen.

In all cases manufacturer equipment schematics will take precedence over

HeatLink electrical schemat ics.

Notes:

Room Thermostats

Standard 4-wire to be run from each zone back to the corresponding manifold location.

6-wire Jumper

6-wire to be run between each manifold location. This allows for the transfer of the

clock signal, heat demand information, and power from module to module.

6-wire Jumper

6-wire to be run from the last manifold location to the mechanical room. This allows

Heat

Source

1

2

for the transfer of the clock signal, heat demand information, and power.

3

Local codes, regulations, and authorities have final jurisdiction.

1-866-661-5332

www.heatlinkgroup.com

27

SCH-MRIB-R001

SCH-TWH-E001

Rough-in wiring see:

46443

C C R W NTC

Optional

TWHP Panel

RC AUX
W

24 Vac

FS

Switch

FLWSWTCH

DHW Priority

L

Pump

Secondary

Pump

Primary

N

Single Zone Heating

Application: Schematic #:

Drawings are for HeatLink suggested electrical schematics only! User must

determine if electrical schematic will work for their particular application . User

must also confirm all HeatLink schematics with manufacturer schematics of each

particular control chosen.

In all cases manufacturer equipment schematics will take precedence over

Notes:

2013-03-18

Date:

HeatLink electrical schemat ics.

Local codes, regulations, and authorities have final jurisdiction.

28

1-866-661-5332

www.heatlinkgroup.com

46443

SCH-MRIB-R002

SCH-TWH-E002

Rough-in wiring see:

1

21122

R

C

W

CR

C

C C R W NTC

R

24 V

Module 40226

StatLink Base

L

or

110V

220V

N

Multiple Zone Heating with StatLink

2013-03-18

Application: Schematic #:

Drawings are for HeatLink suggested electrical schematics only! User must

Notes:

Date:

determine if electrical schematic will work for their particular application . User

must also confirm all HeatLink schematics with manufacturer schematics of each

particular control chosen.

In all cases manufacturer equipment schematics will take precedence over

HeatLink electrical schemat ics.

Local codes, regulations, and authorities have final jurisdiction.

Transformer

24 Vac Class II

(Floating Neutral)

Boiler

Contacts

TWHP Panel

RC AUX
W

24 Vac

FS

Switch

Optional

FLWSWTCH

DHW Priority

L

Pump

Secondary

Pump

Primary

N

1-866-661-5332

www.heatlinkgroup.com

29

SCH-MRIB-R001

SCH-TWH-E003

R1

24 Vac

SPDT

Relay

P3

Rough-in wiring see:

Aquastat

End Switch

C

R

24 V

46443

Transformer

24 Vac Class II

(Floating Neutral)

C C R W NTC

FS

Switch

Optional

FLWSWTCH

DHW Priority

RC AUX
W

24 Vac

L

or

110V

220V

N

L

TWHP Panel

Pump

Secondary

Pump

Primary

N

One Zone Heating with Storage Tank

Application: Schematic #:

Drawings are for HeatLink suggested electrical schematics only! User must

determine if electrical schematic will work for their particular application . User

must also confirm all HeatLink schematics with manufacturer schematics of each

particular control chosen.

In all cases manufacturer equipment schematics will take precedence over

Notes:

2013-03-18

Date:

HeatLink electrical schemat ics.

Local codes, regulations, and authorities have final jurisdiction.

30

1-866-661-5332

www.heatlinkgroup.com

SCH-MRIB-R001

SCH-TWH-E004

R1

24 Vac

SPDT

Relay

Rough-in wiring see:

P3

Pump

C

R

24 V

46443

Transformer

24 Vac Class II

(Floating Neutral)

C C R W NTC

FS

Switch

Optional

FLWSWTCH

DHW Priority

RC AUX
W

24 Vac

L

or

110V

220V

N

L

TWHP Panel

Pump

Secondary

Pump

Primary

N

One Zone Heating with Fixed Speed Pump

Application: Schematic #:

Drawings are for HeatLink suggested electrical schematics only! User must

determine if electrical schematic will work for their particular application . User

must also confirm all HeatLink schematics with manufacturer schematics of each

particular control chosen.

In all cases manufacturer equipment schematics will take precedence over

Notes:

2013-03-18

Date:

HeatLink electrical schemat ics.

Local codes, regulations, and authorities have final jurisdiction.

1-866-661-5332

www.heatlinkgroup.com

31

SCH-MRIB-R001

SCH-TWH-E005

Rough-in wiring see:

See Tankless

Water Heater

Instructions

Heater

Tankless Water

P3

Pump

Recirculation

46443

C C R W NTC

Optional

TWHP Panel

RC AUX
W

24 Vac

FS

Switch

FLWSWTCH

DHW Priority

L

Pump

Secondary

Pump

Primary

N

Single Zone Heating

Application: Schematic #:

Drawings are for HeatLink suggested electrical schematics only! User must

determine if electrical schematic will work for their particular application . User

must also confirm all HeatLink schematics with manufacturer schematics of each

particular control chosen.

In all cases manufacturer equipment schematics will take precedence over

Notes:

2013-03-18

Date:

HeatLink electrical schemat ics.

Local codes, regulations, an d authorities have final jurisdiction.

32

1-866-661-5332

www.heatlinkgroup.com

46443

SCH-MRIB-R001

SCH-TWH-E006

Rough-in wiring see:

Boiler

Contacts

TWHP Panel

C C R W NTC

RC AUX
W

24 Vac

L

Pump

Secondary

Pump

Primary

N

Single Zone Heating

2013-04-22

Application: Schematic #:

Date:

Drawings are for HeatLink suggested electrical schematics only! User must

determine if electrical schematic will work for their particular application . User

must also confirm all HeatLink schematics with manufacturer schematics of each

particular control chosen.

Notes:

In all cases manufacturer equipment schematics will take precedence over

HeatLink electrical schemat ics.

Local codes, regulations, and authorities have final jurisdiction.

1-866-661-5332

www.heatlinkgroup.com

33

46443

SCH-MRIB-R002

SCH-TWH-E007

Rough-in wiring see:

1

21122

R

C

W

CR

C

C C R W NTC

R

24 V

Module 40226

StatLink Base

RC AUX
W

(Floating Neutral)

L

or

110V

220V

N

Multiple Zone Heating with StatLink

2013-04-22

Application: Schematic #:

Drawings are for HeatLink suggested electrical schematics only! User must

Notes:

Date:

determine if electrical schematic will work for their particular application . User

must also confirm all HeatLink schematics with manufacturer schematics of each

particular control chosen.

In all cases manufacturer equipment schematics will take precedence over

HeatLink electrical schemat ics.

Local codes, regulations, and authorities have final jurisdiction.

Transformer

24 Vac Class II

TWHP Panel

24 Vac

L

Pump

Secondary

Pump

Primary

N

34

1-866-661-5332

www.heatlinkgroup.com

Heat Link

www.heatlinkgroup.com

®

Installation, Operation, and Maintenance

TWH – Tankless Water Heater Panels

35

Canada

Manufactured & distributed by HeatLink Group Inc.

Head Office:

4603E - 13th Street N.E.
Calgary, Alberta, T2E 6M3

Eastern Canada Distribution Center:

2810 Argentia Road, Units 5-7
Mississauga, Ontario, L5N 8L2

Toll Free: 1-800-661-5332
Fax: [phone]

China

Distributed by Cathay-Links International
Phone: [phone]
Fax: [phone]

Ireland

Distributed by Jamoni Ltd.
Phone: 057 - 932 4062
Fax: 057 - 932 4063
Freephone: 1800-311338

México

Distributed by Distribuidora Caisa S.A. de C.V.
Phone: [phone]
Fax: [phone]

HeatLink, the HeatLink logo, and “Mechanical Room in a Box” logo are either registered

April 30, 2013

United States

Distributed by HeatLink Group Inc.

USA Distribution Center:

1000 - 100th Street SW, Suite B
Byron Center, MI, 49315
Toll Free: 1-800-661-5332
Fax: [phone]

www.heatlinkgroup.com

trademarks or trademarks of HeatLink Group Inc.

Printed in Canada

© HeatLink Group Inc.