Viessmann SM1 Guide rapide

Please file in Service Binder

5774 469 v1.0 09/2013

SM1

SOLAR CONTROL MODULE

for use by heating contractor

Installation and Service

Instructions

Solar Control Module

for solar connections to the Vitotronic control

Product may not be exactly as shown

Read and save these instructions

for future reference.

IMPORTANT

Certified as a component

part for Viessmann boilers

Solar Control Module SM1, Installation and Service

Safety, Installation and Warranty Requirements

Please ensure that these instructions are read and understood before commencing installation. Failure to comply with

the instructions listed below and details printed in this manual can cause product/property damage, severe personal

injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information

found in manual subsections).

Product documentation

Read all applicable documentation before commencing

installation. Store documentation near boiler in a

readily accessible location for reference in the future

by service personnel.

uFor a listing of applicable literature,

please see section entitled “Important

Regulatory and Safety Requirements”.

Licensed professional heating contractor

The installation, adjustment, service and maintenance

of this equipment must be performed by a licensed

professional heating contractor.

uPlease see section entitled Safety and

“Important Regulatory and Installation

Requirements”.

Advice to owner

Once the installation work is complete, the heating

contractor must familiarize the system operator/

ultimate owner with all equipment, as well as safety

precautions/requirements, shutdown procedure, and

the need for professional service annually before the

heating season begins.

Safety

Warranty

Information contained in this and

related product documentation must

be read and followed. Failure to do

so renders the warranty null and void.

5774 469 v1.0

Table of Contents

Page

5774 469 v1.0

Solar Control Module SM1, Installation and Service

Safety

Important Precautions

General Information

Installation

Connections

Additional Information

Safety, Installation and Warranty Requirements..............2

Product documentation...........................................2

Licensed professional heating contractor...................2

Advice to owner....................................................2

Warranty...............................................................2

Important Regulatory and Installation Requirements........4

Approvals.............................................................4

Codes..................................................................4

Working on the equipment......................................4

Power supply........................................................4

About these Installation Instructions..............................5

Mounting on the Wall....................................................6

Overview of Electrical Connections...............................7

.System Example 1...................................................8

.System Example 2...................................................11

.System Example 3....................................................14

Power Supply...........................................................18

Connecting the KM Bus to the Extension Modules........19

Connection and Wiring Diagram.................................20

Function Description.................................................21

Specifications..........................................................23

Solar Control Module SM1, Installation and Service

5774 469 v1.0

Important Precautions

Important Regulatory and Installation Requirements

Approvals

Viessmann boilers, burners and controls are approved for

sale in North America by CSA International.

Codes

The installation of this unit shall be in accordance with

local codes. In the absence of local codes, use:

- CSA C22.1 Part 1 and/or local codes in Canada

- National Electrical Code ANSI/NFPA 70 in the U.S.

Always use latest editions of codes.

The heating contractor must comply with the Standard

for Controls and Safety Devices for Automatically Fired

Boilers, ANSI/ASME CSD-1 where required by the

authority having jurisdiction.

Working on the equipment

The installation, adjustment, service, and maintenance

of this product must be done by a licensed professional

heating contractor who is qualified and experienced in the

installation, service, and maintenance of hot water boilers.

There are no user serviceable parts on the boiler, burner,

or control.

Power supply

Install power supply in accordance with the regulations

of the authorities having jurisdiction or, in absence of

such requirements, in accordance with National Codes.

Viessmann recommends the installation of a disconnect

switch to the 120V power supply outside of the boiler

room.

Ensure main power supply to equipment, the heating

system, and all external controls have been deactivated.

Close main oil or gas supply valve. Take precautions in

both instances to avoid accidental activation of power

during service work.

u Please carefully read this manual prior to attempting

installation. Any warranty is null and void if these

instructions are not followed.

For information regarding other Viessmann System

Technology componentry, please reference

documentation of the respective product.

We offer frequent installation and service seminars

to familiarize our partners with our products. Please

inquire.

u The completeness and functionality of field supplied

electrical controls and components must be verified

by the heating contractor. These include low water

cut-offs, flow switches (if used), staging controls,

pumps, motorized valves, air vents, thermostats, etc.

WARNING

Turn off electric power supply before

servicing. Contact with live electric

components can cause shock or loss

of life.

5774 469 v1.0

Solar Control Module SM1, Installation and Service

About these Installation Instructions

General Information

Take note of all symbols and notations intended to draw attention to potential hazards or important

product information.

CAUTION

Cautions draw your attention to the presence of potential

hazards or important product information.

WARNING

Warnings draw your attention to the presence of potential

hazards or important product information.

IMPORTANT

u Indicates an imminently hazardous situation which,

if not avoided, could result in death, serious injury or

substantial product/property damage.

u Indicates an imminently hazardous situation which,

if not avoided, may result in minor injury or product /

property damage.

u Helpful hints for installation, operation or maintenance

which pertain to the product.

u This symbol indicates to note additional information

u This symbol indicates that other instructions must be

referenced.

Solar Control Module SM1, Installation and Service

5774 469 v1.0

Installation

Mounting on the Wall

Extension kit for installation on a wall

1. Loosen the retaining screws from the extension kit

enclosure (do not remove).

2. Remove cover and set aside.

3. Mount the extension module enclosure to the wall

using the supplied hardware.

4. Install the cover.

Components:

HSM1 module

HKM BUS plug aVG

HPower cord pre-wired to plug fÖ

HTemperature sensor %

HTemperature sensor &

HTemperature sensor / (accessory)

HTemperature sensor aÖ (accessory)

HPump plug sS

HPump plug sF

HSpeed control PWM plug

5774 469 v1.0

Solar Control Module SM1, Installation and Service Connections

Overview of Electrical Connections

Note: Apply a strain relief to all on-site cables.

Close any unnecessary knock-outs with cable

grommets (not cut open).

CAUTION

Electronic modules can be damaged by electrostatic

charges.

Before commencing work, touch an grounded object,

e.g. heating or water pipes to discharge static loads.

Legend

A Solar control module

% DHW tank temperature sensor

& Collector temperature sensor

/ Temperature sensor (accessory)

aÖ Temperature sensor (accessory)

sS Transfer pump or 3-way diverter valve

sF Solar circuit pump

fÖ Power supply

aVG KM BUS to boiler control unit

PWM Speed control, solar circuit pump (if circulation

pump with PWM control installed)

Solar Control Module SM1, Installation and Service

5774 469 v1.0

System Example 1

Connections

DHW heating with dual mode DHW tank

Function description

DHW heating with solar energy

If the temperature differential between collector

temperature sensor eQ and DHW tank temperature sensor

qQ is greater than the start temperature differential

(coding address 00), solar circuit pump eE is started and

DHW tank qP is heated.

Solar circuit pump eE stops if:

HActual temperature drops below stop temperature

differential (coding address 01)

HMaximum DHW tank temperature is exceeded (coding

address 08)

HThe temperature selected at high limit safety cut-out qW

(if installed) is reached

Additional function for DHW heating

The requirements for the additional function are achieved

through circulation pump qT.

Boiler installation and service instructions

Suppression of DHW tank reheating by the boiler

Reheating suppression takes place in two stages.

Required codes at the oil/gas boiler control unit

Reheating of DHW tank qP by boiler 1is suppressed

as soon as DHW tank qP is heated by collectors eP.

For this, the set DHW tank temperature for reheating

is reduced by boiler 1. After solar circuit pump eE

has been switched off, suppression remains active

for a certain time.

In the case of uninterrupted heating by the collectors eP

(> 2 h), boiler 1will only reheat if the set DHW

temperature selected at boiler control unit 2(coding

address “67”) is not achieved.

A third set DHW temperature can be specified via coding

address “67” [setting range 50 to 203° F (10 to 95° C)].

This value must be below the first set DHW temperature.

DHW tank qP will only be heated by boiler 1if this set

value cannot be achieved by the solar thermal system.

DHW heating without solar energy

The upper section of DHW tank qP is heated by

boiler 1. The DHW tank thermostat with DHW tank

temperature sensor qZ of boiler control unit 2regulates

DHW tank heating.

Note: Coding address 00 can be set to min. 0.9° F (0.5 K)

above coding address 01.

Coding address 01 can be set to max. 0.9° F (0.5 K)

below coding address 00.

Function/system components

Code in solar group

Adjust Factory set

condition

Start temperature differential for solar circuit pump at connection sF

Factory set condition 8 K (14.4° F)

00:... 00:8

Stop temperature differential for solar circuit pump at connection sF

Factory set condition 4 K (7.2° F)

01:... 01:4

Solar circuit pump type:

HSolar circuit pump is not speed-controlled

HSolar circuit pump is speed-controlled with wave pack control

HSolar circuit pump is speed-controlled with PWM control

02:1

02:2

02:0

Maximum DHW tank temperature (Factory set condition 140 F) 60° C) 08:... 08:60

Additional DHW heating function:

HWithout additional function for DHW heating

HWith additional function for DHW heating

20:1

20:0

5774 469 v1.0

Solar Control Module SM1, Installation and Service Connections

System Example 1 (continued)

Hydraulic installation scheme

Equipment required

Legend

1 Wall mounted oil/gas boiler with

2 Boiler and heating circuit control unit

qP Dual mode DHW tank

qQ DHW tank temperature sensor % (solar control

module)

qW High limit safety cut-out (accessory)

qE DHW circulation pump (on site) (accessories may be

required for connection)

qR Thermostatic mixing valve (accessory)

qT Circulation pump sS (transfer of heat, on site)

qZ DHW tank temperature sensor % (boiler)

eP Solar collectors

eQ Collector temperature sensor &

eW Solar-Divicon (accessory) with

eE Solar circuit pump sF

eZ Solar control module, type SM1

eU Junction box (on site)

Solar Control Module SM1, Installation and Service

5774 469 v1.0

Connections

System Example 1 (continued)

Electrical installation scheme

Solar control module, type SM1

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