Steffes ThermElect 8150 Manual de usuario

OWNER'S AND

INSTALLER'S MANUAL

Models: 8150, 8155, 8180, 8185, 8188

Applicable to Software Version 2.0

LISTED

For Customer Use

Please record your model and serial number below. This number is found on the identification labels

located on the front of and inside the electrical panel. Retain this information for future reference.

Model No. ________________________________________________________________________

Serial No. ________________________________________________________________________

RECOGNIZE THESE SYMBOLS AS SAFETY PRECAUTIONS

It is important, both for your personal safety and to avoid possible damage to the

equipmentandyourproperty,thatyouobservethesafetyinstructionsgivenfollowing

thesesymbols.



The equipment described herein is intended for installation by a qualified

technician in accordance with applicable local, state, and national codes and

requirements.



To insure proper installation and operation of this product, completely read all

instructions prior to attempting to assemble, install, operate, maintain or repair

this product. Upon unpacking of the system, inspect all parts for damage prior

to installation and start-up.



This manual should be retained by the owner upon completion of the installa-

tion and made available to service personnel as required.



Disclaimer: In compiling this manual, Steffes Corporation has used its best

judgement based upon information available, but disclaims any responsibility

or liability for any errors or miscalculations contained herein, or any revisions

hereof, or which result, in whole or in part, from the use of this manual or any

revisions hereof.

Steffes disclaims any responsibility or liability for mold/mildew growth and/or

any damages caused by either. We strongly recommend that the user follow

the moisture, mold and mildew prevention guidelines prescribed by local or

national protection agencies.

IMPORTANT

SAFETY PRECAUTIONS

1. DO NOT energize the system while disassembled or

without ceramic heat storage brick in place.

2. DO NOT use or store materials that may produce explo-

sive or flammable gases near the system.

3. DO NOT violate the placement and clearance require-

ments specified in this manual. (Page 3.03)

4. DO NOT place anything on top of the Storage Module(s).

5. Disconnect power to all circuits before servicing. This

heating system may be connected to more than one branch

circuit.

6. Installation of and/or service to this heating system should

be performed by a qualified technician in accordance with

information contained herein and with national, state, and

local codes and requirements.

7. A repeated message of “CORE FAIL” indicates a need

for service by a qualified technician.

BUILT-IN SAFETY DEVICES

The ThermElect heating system incorporates safety devices to ensure normal operating temperatures are main-

tained. The chart below describes these safety devices.

DEVICENAME FUNCTION LOCATION

ON SYSTEM

Core Charging High

Limit Switches

(Auto Reset)

These limit switches monitor the core and top temperatures.

If normal operating temperatures are exceeded, the system

will display "CORE FAIL" and the elements will not be

allowed to operate.

This limit switch monitors the discharge air temperature

and interrupts power to the core blower if the normal

operating temperature is exceeded:

160oF / 71oC (nominal)

Core Blower

Limit Switch

(Auto Reset)

This limit switch monitors the discharge air temperature

and interrupts power to both the supply air blower and the

core blower if the normal operating temperature is ex-

ceeded: 190oF / 88oC (nominal)

Supply Air Blower

LimitSwitch

(Manual Reset)

Core Blower Housing

TemperatureLimit

Switch (Auto Reset)

This limit switch monitors the temperature in the base of the

air handler and interrupts power to the core blower if the

normal operating temperature is exceeded:

160oF / 71oC (nominal)

In the base of the air

handler near the core

blower.

Mountedonlimit

bracket at discharge

airoutlet.

Mountedonlimit

bracket at discharge

airoutlet.

THERMELECT SAFETYINFORMATION

Air handler side of

each storage module

and storage module top

panel.

WARNING



Hazardous Voltage: Risk of elec-

tric shock, injury, or death. This

system may be connected to

more than one branch circuit.

Disconnect power to all circuits

before installing or servicing.

Installation of and/or service to

this equipment MUST be per-

formed by a qualified technician.



Risk of injury or fire. Violation of

the clearance requirements can

cause improper operation of the

equipment. Maintain the place-

ment and clearance requirements

specified.

Table of Contents

TABLEOFCONTENTS THERMELECT

Operation

GeneralOperation ........................................................................................................................................................................ 1.01

System Use During Construction Phase...................................................................................................................................... 1.01

SystemStart-Up ........................................................................................................................................................................... 1.01

Turning System "OFF" and "ON" ............................................................................................................................................... 1.01

ControlPanel ............................................................................................................................................................................... 1.02

Operating Status .......................................................................................................................................................................... 1.02

TemperatureControl .................................................................................................................................................................... 1.03

BrickCoreChargeControl ........................................................................................................................................................... 1.03

ChargeControlOverride .............................................................................................................................................................. 1.03

Maintenance and Cleaning .......................................................................................................................................................... 1.03

Optional Accessories

Load Management Control .......................................................................................................................................................... 2.01

ExternalDuctSensor.................................................................................................................................................................... 2.02

LiftingHandles ............................................................................................................................................................................ 2.02

Installation

Shipping and Packaging .......................................................................................................................................................3.01-3.02

PlacementandClearanceRequirements....................................................................................................................................... 3.03

InitialSet-up................................................................................................................................................................................. 3.04

Attaching Storage Module(s) to Air Handler .......................................................................................................................3.04-3.05

ElectricalPanelInstallation ...................................................................................................................................................3.06-3.07

BrickLoading ........................................................................................................................................................................3.07-3.08

HeatingElementInstallation ........................................................................................................................................................ 3.08

BrickCoreTemperatureSensorInstallation-............................................................................................................................... 3.09

AirConditioner/HeatPumpInterface........................................................................................................................................... 3.09

Ducting ........................................................................................................................................................................................ 3.10

LineVoltageElectricalConnections ............................................................................................................................................ 3.10

Outdoor Temperature Sensor Installation.................................................................................................................................... 3.11

Thermostat Connections ......................................................................................................................................................3.11-3.12

ElectronicAirFilterInstallation ................................................................................................................................................... 3.14

Installer'sFinalCheck-OutProcedure .......................................................................................................................................... 3.14

Load Management Control

On-Peak/Off-PeakProgram ...................................................................................................................................................4.01-4.02

4-20MilliampControl(1-5VoltDC) ............................................................................................................................................. 4.02

Pulse Monitoring ......................................................................................................................................................................... 4.03

Appendix

Specifications..................................................................................................................................................................... A.01-A.03

TypicalSystemLineVoltageWiringDiagrams.................................................................................................................. A.04-A.05

InternalSystemWiringDiagram-LowVoltage .......................................................................................................................... A.06

Help Menu ..................................................................................................................................................................................A.07

ErrorCodes ........................................................................................................................................................................ A.07-A.09

Warranty

GENERAL OPERATION

The ThermElect heating system stores off-peak electricity in the form of heat. Off-peak electricity is available

during times of the day or night when electricity is plentiful and the associated costs are low.

Operation of the heating system is automatic. During off-peak hours, the system converts electricity to heat which

is then stored in its ceramic brick core. The amount of heat stored in the brick core of the Storage Module(s)

variesinrelation to outdoor temperature, current building load, utility peak conditions, and/or the heating require-

ments.

A heat call from the thermostat or main system control energizes the blowers in the system. The variable speed

core blower automatically adjusts its speed to circulate air through the brick core. The supply air blower then

delivers the heated air into the desired area through the duct system to maintain constant, comfortable temperature.

The versatility of this system allows it to fit many applications. The system is designed for use as either a sole

heating source (“stand alone” furnace) for make up air heating or as a supplement to another ducted heating

system such as a heat pump.

SYSTEM USE DURING CONSTRUCTION PHASE

Like most heating equipment manufacturers, Steffes strongly recommends that “Construction Heating Units” be

used instead of the permanent heating system during the construction phase. Use of the permanent heating system

during this phase may contaminate the duct system and/or internal areas of the heating system. This may cause

poor indoor air quality issues and/or improper system operation or equipment damage.

SYSTEM START-UP

On start-up of the system, odors relating to first time operation of the heating components may be experienced.

Also, if not used for an extended period of time, dust may accumulate in the system. Allow the heating system to

charge to its maximum brick core charge level to expel odors in a timely manner.

As with most heating systems, air borne particles and odors may be drawn into the system and oxidized. Odors

can be amplified; thus, it is not recommended to operate the system if odors such as those from paints,

varnishes, or chemicals are present in the air. Air borne particles, which have been oxidized, are expelled

back into the room and may accumulate on air vents or other surfaces. Over time, these particles may appear as a

black residue, commonly referred to as soot. High concentrations of air borne particles from aerosols, dust,

candles, incense, pet hair, smoke, or cooking can contribute to poor indoor air quality and accelerate the sooting

process.

During operation, the heating system may produce minor expansion noises. These noises are the result of the

internal components reacting to temperature changes.

TURNING SYSTEM "OFF" AND "ON"

The system is fully automatic and does not need to be manually disabled. Talk to your installer or energy manage-

mentpersonforadditionalinformation.

THERMELECT OPERATION 1.01

Operation

CONTROL PANEL

Operation of the ThermElect system is automatic. All operational functions are stored in its microprocessor in

function locations and are factory preset. If necessary, the installer can adjust them through the control panel.

(See Figure 1.)

Four-Digit LED Display

The four digit LED displays specific operating information. During an editing

process, the function locations and the values set in these locations are displayed

for viewing and adjusting purposes.

AM and PM Indicator Lights

The AM and PM indicator lights are only utilized if the Steffes Time Clock Module

is being installed. With this module installed, the system displays time on AM/PM

intervals and the corresponding light flashes. The system can be configured to

display military time, in which case both the AM and PM lights illuminate.

Mode (Edit) Button

Activates the editing menu for changing the operating

information of the system.

Up and Down Arrow Buttons

Used to scroll up or down when viewing or changing

operatingfunctions.

Interface Port

FOR SERVICE USE ONLY! Allows technician external access for updating software and troubleshooting.

OPERATING STATUS

The ThermElect system is set to display various operating information as described below. Press and release the

up arrow to view this data.

Operating Mode - Indicates the current operating mode of the system.

C = Off-Peak (Charge) Time

P = On-Peak (Control) Time

A = Anticipated Peak Time

Outdoor Temperature -“O” followed by a number indicates current outdoor temperature.

Heat Call Status - Indicates the current heat call status being received from the room thermostat.

HC_0 = No Heat Call HC_1 = Stage 1 Heat Call

HC_2 = Stage 2 Heat Call HC_3 = Emergency Heat

COOL = Cooling/Air Conditioning Call

Brick Core Charge Level - “CL” (charge level) followed by a number indicates the current

percentage of heat stored in the brick core. “CL:_” represents zero percent and “CL: F” repre-

sents a full core charge level.

Targeted Brick Core Charge Level - “tL” (target level) followed by a number indicates the

current percentage of brick core charge being targeted by the system. A display of “tL:_” indi-

cates a target level of zero percent and “tL: F” indicates a full core charge target level.

Load Control - Current demand (kW) divided by 10. A value of "d 75" is equal to a current

demand of 750kW.

OPERATION 1.02 THERMELECT

A bar illuminates on the lower portion of

the display's second digit whenever one or

more heating elements are energized.

CAUTION

Editingoperating

information may alter

the performance and

operation of the system.

CONTROL PANEL

FIGURE 1

STEFFES CORPORATION

Operation

×Ø

THERMELECT OPERATION 1.03

TEMPERATURE CONTROL

Temperature set point is adjusted at the wall thermostat(s) or the main system control. If temperature in the area

drops below the desired set point, a heat call is initiated and the blower in the ThermElect system is energized.

The variable speed core blower automatically adjusts speed in relation to brick core temperature and duct tem-

perature to circulate air through the brick core. The supply air blower then delivers the heated air into the desired

area through the duct system to satisfy heating requirements.

When used to supplement heat pump systems, the ThermElect system replaces resistance strip heat, which is

typically required as a supplement or back-up to the heat pump system. The outlet sensor monitors the discharge

air temperature. If the demand for heat is at a point where the heat pump alone cannot maintain the desired duct

temperature, stored heat is used to supplement the heat pump and satisfy the heating requirements.

When the ThermElect system receives a “G” call, the supply air blower is energized; however, no heat is deliv-

ered as this is a “fan only” call.

When a “G” call is received with a “Y” call, the supply air blower is energized and the minimum discharge air

temperature (as set in Location 48) is targeted.

Anytime the ThermElect system receives a “W” call with any other call from the thermostat (except “O”) then

the maximum discharge air temperature (as set in Location 49) is targeted. The maximum discharge air tempera-

ture is also targeted if the current outdoor temperature (shown in Location 109) is lower than the off-peak lock out

temperature (set in Location 46) or the on-peak lockout temperature (set in Location 47).

Reference the Supplemental Installer's Guide for more information on system operation.

BRICK CORE CHARGE CONTROL

The amount of heat stored in the brick core of the Storage Module(s) varies in relation to outdoor temperature,

currentbuildingload,utilitypeakconditions,and/ortheheatingrequirements.Theoutdoorsensor,suppliedwiththe

system, monitors outdoor temperature and provides this information to the system. As the outdoor temperature

decreases, heating requirements increase and the system stores more heat accordingly.

CHARGE CONTROL OVERRIDE

If desired, the ThermElect system can be programmed to allow a charge control override. This override allows the

user to force the system to target a full core charge level and can be initiated or cancelled at any time. If an

override is initiated, the system targets a full core charge level during the next off-peak period. It continues to

charge during off-peak hours until it achieves full (maximum) core charge or until the override is cancelled. Once

full charge is achieved or the override is cancelled, the system charges according to the standard configuration.

MAINTENANCE AND CLEANING

Any air filter(s) in the system should be replaced on a regular basis to ensure proper operation and to maintain

overall efficiencies. No additional routine maintenance is required.

If utilizing a heat pump or air conditioning system with the ThermElect system, the indoor coil should be cleaned

periodically as dirt accumulation may reduce system efficiency. It is important to follow the manufacturer’s

maintenance and cleaning recommendations for these devices.

Operation

Optional Accessories

LOAD MANAGEMENT CONTROL

The ThermElect is a commercial Electric Thermal Storage (ETS) heating system. It uses Demand Free, Off-Peak

electricity to provide a low cost heating solution for commercial, industrial, and large residential applications. ETS

equipment is designed to store electricity, as heat, during hours when energy costs are lower and kW demand

charges are not incurred. The ThermElect’s thermal mass consists of a high-density ceramic brick capable of vast

heat storage.

The ThermElect system is designed to operate under one of three different load management control strategies.

1. On-Peak/Off-Peak Program

a) The ThermElect system responds to heat calls during the on-peak and off-peak periods; however, only

consumes energy (energize heating elements) during the off-peak periods. The ThermElect system is

controlled by an external control device such as a meter or time clock module.

b) The ThermElect system also offers on-peak control of external loads by utilizing the dry contacts provided

on the relay driver board.

2. 4-20 Milliamp Control (1-5 volt DC)

a) The ThermElect system receives a signal from an external load control device such as a building load

management system. This external signal dictates to the ThermElect the maximum amount of energy

which can be consumed during a preset time interval.

b) Other external loads would generally be controlled through the building's

load management control system.

3. Pulse Monitoring

a) The ThermElect system monitors pulse outputs from the power company's

electric meter. Program parameters such as desired maximum building kW

and pulse ratios for the metering system being used are entered into the

ThermElect system. The system then changes proportionally when demand

free power is available. This keeps the total building kW usage at or below

the desired level.

b) External load management control modules (Order Item # 1908410) are

availablewhen using pulse monitoring load control. Each module has eight

(8) zones which can be controlled. The ThermElect system must be

configured to recongnize the number of load management modules installed

(maximum of two per ThermElect system).

Reference the Load Management Section of this manual for more specific information on the individual methods

ofcontrol.

Optional Accessories

OPTIONALACCESSORIES2.01 THERMELECT

Optional Accessories

THERMELECT OPTIONALACCESSORIES 2.02

EXTERNAL DUCT SENSOR

The optional external duct sensor (Order Item #1041536)

provides the ability to monitor the duct temperature at an

area beyond fresh air makeup and/or beyond other

devices and regulate the discharge air temperature

accordingly.

The duct sensor feature is enabled if the 4 bit is set in

Location 53 (L053). Once enabled, the ThermElect

system monitors temperature at both the duct sensor and

the output sensor during Y, W, or E calls from the ther-

mostat.

If there is a Y and a G call from the thermostat, the

ThermElect system operates the core blower at the

required speed to maintain the minimum output tempera-

ture as set in Location 48 (L048) at the duct sensor. If

there is only one call from Y, W, or E, then the system will operate the core blower at the required speed to

maintain the maximum output temperature as set in Location 49 (L049) at the duct sensor. The system is set to

turn off the core blower if the output temperature at the output sensor exceeds 150 degrees Fahrenheit.

LIFTING HANDLES

Optional lifting handles are available (Order Item #1302120) to aid in

moving the ThermElect Storage Module(s) into their final location. It is

extremely important to use caution when lifting a Storage Module.

Instruct workers to NOT walk under or place any body parts under

the Storage Module when lifting and/or moving.

WARNING

HEAVY OBJECT WARNING: Risk

of personal injury, or death.

ThermElect Hydronic systems

are heavy. Use lifting aids to

move system into place.



Do not place object, hands,

and/or body parts under the

system when lifting.



Do use care to keep objects,

hands, and/or body parts clear

of system when lifting.

Installation

SHIPPING AND PACKAGING

The ThermElect Storage Module(s) should always be transported in an upright position to avoid damage to internal

components and insulation materials. The information below describes the items shipped with each system.

Installation

1STORAGE MODULE(S)

INSTALLATION3.01 THERMELECT

MODULES

MODEL 53kW 80kW

8150 1 0

8155 2 0

8180 0 1

8185 1 1

8188 0 2

HEATING ELEMENTS

WITH CERAMIC INSULATORS

INFORMATION PACKAGE

(includes Owner's Manual and

Warranty Registration Card)

(included on pallet with the electrical panel )

ELECTRICAL PANEL

AIR HANDLER

2000CFM-Standard

3000CFM-Optional

(shipped separately) MODULE ELEMENTS

53kW 12 (2 boxesof6)

80kW 18 (3 boxesof6)

(shipped separately)

(includeselectrical

panel mounting

screws,romex

connectors, and

wiringschematic)

208/240V shown

ELEMENT SCREW KIT &

INSTALLATION HARDWARE KIT

(shipped

inside the

electrical

panel)

SEAM WRAP

(shipped inside brick storage cavity)

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