Reznor SCE Betriebsanleitung

Revision: SCE-IOM (01-22) 207697-B

MODEL SCE

INSTALLATION/OPERATION/MAINTENANCE FOR

SEPARATED-COMBUSTION PACKAGED FURNACE/BLOWER

Supersedes: I-SCE (04-21) 207697-A

⚠ DANGER ⚠

FIRE OR EXPLOSION HAZARD

• Failure to follow safety warnings exactly could result in serious injury, death, or property

damage.

• Improper installation,adjustment,alteration, service,or maintenance can cause serious injury,

death, or property damage.

• Installation and service must be performed by a qualiﬁed installer, service agency, or the gas

supplier.

• Be sure to read and understand the installation, operation, and service instructions in this

manual.

• Do not store or use gasoline or other ﬂammable vapors and liquids in the vicinity of this or

any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Leave the building immediately.

• Immediately call your gas supplier from a phone remote from the building. Follow the gas

supplier’s instructions.

• If you cannot reach your gas supplier, call the ﬁre department.

DO NOT DESTROY. PLEASE READ CAREFULLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

2SCE-IOM (01-22) 207697-B

TABLE OF CONTENTS

GENERAL INFORMATION ............................................................................. 3

References ........................................................................................ 4

Important Safety Information........................................................................... 4

Separated Combustion ............................................................................... 5

Installation Codes ................................................................................... 5

Special Installations (Aircraft Hangars/Garages) ........................................................... 5

Warranty .......................................................................................... 5

Dimensions ........................................................................................ 5

Weights........................................................................................... 7

Clearances ........................................................................................ 7

Location .......................................................................................... 7

Hazards of Chlorine ................................................................................. 7

INSTALLATION ...................................................................................... 8

Uncrating/Unpacking................................................................................. 8

Shipped-Separate Parts .............................................................................. 8

Suspension ........................................................................................ 9

Mounting .......................................................................................... 9

Duct Connections .................................................................................. 10

Requirements and Suggestions for Connecting and Installing Ducts ........................................ 11

Venting/Combustion Air Connections ................................................................... 12

Speciﬁc Venting Requirements: Piping ............................................................... 12

Speciﬁc Venting Requirements: Venter Outlet and Combustion Air Inlet Connections........................... 13

Speciﬁc Venting Requirements: Joints and Sealing ..................................................... 13

Speciﬁc Venting Requirements: Support.............................................................. 14

Speciﬁc Venting Requirements: Clearance ............................................................ 15

Speciﬁc Venting Requirements: Concentric Adapter Box ................................................. 15

Speciﬁc Venting Requirements: Concentric Adapter Box Pipe Connections .................................. 15

Vent Terminal Options............................................................................ 16

Vertical Vent Terminal (Option CC2) Installation........................................................ 17

Horizontal Vent Terminal (Option CC6) Installation...................................................... 22

Piping Connections................................................................................. 26

Gas Supply Pressure............................................................................. 26

Gas Supply Piping............................................................................... 27

Supply Piping Connections ........................................................................ 27

Condensate Drain Installation ...................................................................... 28

Electrical Connections .............................................................................. 29

Control Wiring .................................................................................. 29

CONTROLS ........................................................................................ 30

Thermostat ....................................................................................... 30

Combustion Air Proving Switch........................................................................ 30

Blower Fan Control ................................................................................. 31

Limit Control ...................................................................................... 31

Variable Frequency Drive ............................................................................ 31

Combination Gas Valve ............................................................................. 31

Optional Two-Stage Control (Heating Only Application)..................................................... 32

Optional Two-Stage Control (Makeup Air Application) ...................................................... 32

Optional Ductstat with Capillary Tubing (Option AG3) ................................................... 32

Optional Ductstat with Electronic Remote Setpoint Module (Option AG15 or AG16) ............................ 33

Optional Electronic Modulation ........................................................................ 33

Electronic Modulation Between 50% and 100% Firing Rate (Option AG7, AG8, or AG9) ........................ 33

Computer-Controlled Electronic Modulation Between 50% and 100% Firing Rate (Option AG21).................. 34

Electronic Modulation Between 20–28% and 100% Firing Rate (Option AG39) ................................ 34

Electronic Modulation Between 20–28% and 100% Firing Rate (Option AG40) ................................ 35

SCE-IOM (01-22) 207697-B

GENERAL INFORMATION

•This unit has been tested for capacity and efﬁciency so as to provide many years of safe and dependable comfort

providing it is properly installed and maintained. With regular maintenance, this unit will operate satisfactorily year

after year. Abuse, improper use, and/or improper maintenance can shorten the life of the appliance and create

unsafe hazards.

•To achieve optimum performance and minimize equipment failure, it is recommended that periodic maintenance

be performed on this unit. The ability to properly perform maintenance on this equipment requires certain tools

and mechanical skills.

•This unit has been design-certiﬁed by the Canadian Standards Association to ANSI Standards and is available

for use with either natural or propane gas. The type of gas, the rate, and the electrical characteristics are on the

unit rating plate.

TABLE OF CONTENTS—CONTINUED

Pilot and Ignition Systems............................................................................ 37

Burners, Burner Oriﬁces, and Carryover System .......................................................... 37

Dampers and Damper Controls ....................................................................... 38

Dirty Filter Switch .................................................................................. 39

OPERATION ....................................................................................... 39

Pre-Startup Checklist ............................................................................... 39

Startup .......................................................................................... 40

Post-Startup Checklist .............................................................................. 40

ADJUSTMENTS..................................................................................... 41

Belts, Blowers, and Drives ........................................................................... 41

Checking and Adjusting Belt Tension ................................................................ 41

Adjusting Blower Speed .......................................................................... 41

Reversing Blower Rotation ........................................................................ 42

Motor Load and Amp Adjustment ...................................................................... 42

Measure and Adjust Manifold (Outlet) Gas Pressure ....................................................... 43

High Elevation (>2,000 Feet/609 Meters) Installations ................................................... 44

Conversion to LP (Propane) ....................................................................... 45

Burner Air Shutter Adjustment ........................................................................ 46

Damper Linkage Adjustment.......................................................................... 46

Dirty Filter Switch Adjustment ......................................................................... 47

MAINTENANCE..................................................................................... 48

Service Checklist .................................................................................. 48

Maintenance Procedures ............................................................................ 48

Combination Gas Valve Maintenance ................................................................ 48

Vent/Combustion Air System Maintenance ............................................................ 49

Burner Rack Maintenance......................................................................... 49

Cleaning Pilot and Burners ........................................................................ 50

Spark Ignition System Maintenance ................................................................. 51

Maintenance Procedures—Continued .................................................................. 52

Cleaning Heat Exchanger ......................................................................... 52

Venter Motor Maintenance ........................................................................ 52

Air Circulation System Maintenance ................................................................. 52

Limit Control Check .............................................................................. 52

TROUBLESHOOTING ................................................................................ 52

INSTALLATION RECORD (TO BE COMPLETED BY INSTALLER)............................................. 56

4SCE-IOM (01-22) 207697-B

Table 1. Related Technical Manuals Available from Factory Distributor

Type Form*PN

Replacement parts SC-SCE-SSCBL-SSCDBL-RPL 269822

Vent/combustion air kit installation OPT-CC2-CC6 205892

Gas conversion OPT-GC 143147

*Also available at www.reznorhvac.com.

GENERAL INFORMATION—CONTINUED

References

Important Safety Information

Please read all information in this manual thoroughly and become familiar with the capabilities and use of your

appliance before attempting to operate or maintain this unit. Pay attention to all dangers, warnings, cautions, and

notes highlighted in this manual. Safety markings should not be ignored and are used frequently throughout to

designate a degree or level of seriousness.

DANGER: A danger statement describes a potentially hazardous situation that if not avoided, will result in severe

personal injury or death and/or property damage.

WARNING: A warning statement describes a potentially hazardous situation that if not avoided, can result in severe

personal injury and/or property damage.

CAUTION: A caution statement describes a potentially hazardous situation that if not avoided, can result in minor

or moderate personal injury and/or property damage.

NOTE: A note provides important information that should not be ignored.

⚠ DANGER ⚠

Gas-ﬁred appliances are not designed for use in hazardous atmospheres containing ﬂammable

vapors or combustible dust, in atmospheres containing chlorinated or halogenated hydrocarbons,

or in applications with airborne silicone substances.

⚠ WARNING ⚠

For your safety, read the warning labels on the unit.

NOTES:

• Installation should be done by a qualiﬁed agency in accordance with the instructions in this

manual and in compliance with all codes and requirements of authorities having jurisdiction.

• The instructions in this manual apply only to the model SCE blower-type unit heater with blower

cabinet.

• Model SCE units are not certiﬁed for residential use.

SCE-IOM (01-22) 207697-B

Separated Combustion

•This separated-combustion unit is designed and manufactured in accordance with the ANSI deﬁnition of separated

combustion, which reads, “Separated Combustion System Appliance: A system consisting of an appliance and

a vent cap(s) supplied by the manufacturer, and (1) combustion air connections between the appliance and the

outside atmosphere, and (2) ﬂue gas connections between the appliance and vent cap, of a type(s) speciﬁed by the

manufacturer but supplied by the installer, constructed so that, when installed in accordance with the manufacturer’s

instructions, air for combustion is obtained from the outside atmosphere and ﬂue gases are discharged to the

outside atmosphere.”

•Separated-combustion units are designed to separate air for combustion and ﬂue products from the environment

of the building in which the unit is installed. Separated-combustion appliances are recommended for use in dust-

laden and some corrosive-fume environments or in buildings with negative pressure (up to 0.15 IN WC). As the

deﬁnition states, all separated-combustion, power-vented equipment must be equipped with both combustion-air

and exhaust piping to the outdoors.

Installation Codes

•These units must be installed in accordance with local building codes. In the absence of local codes, in the United

States, the unit must be installed in accordance with the National Fuel Gas Code NFPA/ANSI Z223.1 (latest edition).

A Canadian installation must be in accordance with the CSA B149.1 Natural Gas and Propane Installation Code.

These codes are available from CSA Information Services, 1-800-463-6727. Local authorities having jurisdiction

should be consulted before installation is made to verify local codes and installation procedure requirements.

•These gas-ﬁred products are certiﬁed by ANSI Z83 family of standards governing the safe usage of heating

equipment in the industrial/commercial marketplace. This includes using the heaters in makeup air applications to

supply corridor pressurization in commercial buildings such as ofﬁce structures and apartment complexes.

•The heaters are not certiﬁed as residential heating equipment and should not be used as such.

•Clearances from the heater and vent to combustible construction or material in storage must conform with the

National Fuel Gas Code ANSI Z223.1 (latest edition) pertaining to gas-burning devices, and such material must

not attain a temperature over 160°F (71°C) by continued operation of the heater.

Special Installations (Aircraft Hangars/Garages)

Installations in aircraft hangars should be in accordance with NFPA No. 409 (latest edition), Standard for Aircraft

Hangars; in public garages in accordance with NFPA No. 88A (latest edition), Standard for Parking Structures; and

for repair garages in accordance with NFPA No. 88B (latest edition), Standard for Repair Garages. In Canada,

installations in aircraft hangars, repair garages, and parking garages should be in accordance with the requirements

of the enforcing authorities and in accordance with CSA B149 codes.

Warranty

Refer to the limited warranty information on the warranty card in the owner’s envelope. Warranty is void if:

a. Separated-combustion heaters are used in atmospheres containing ﬂammable vapors or atmospheres containing

chlorinated or halogenated hydrocarbons or any contaminant (silicone, aluminum oxide, etc.) that adheres to

the spark ignition ﬂame sensing probe.

b. Wiring is not in accordance with the diagram furnished with the heater.

c. Unit is installed without proper clearance to combustible materials.

Dimensions

All dimensions for the model SCE unit heater are shown in Figure 1 and are listed in Table 2.

6SCE-IOM (01-22) 207697-B

GENERAL INFORMATION—CONTINUED

Figure 1. Model SCE Dimensions in Inches (±1/8 (mm ±3))

STANDARD MODEL SCE

MODEL SCE WITH OPTIONAL HORIZONTAL INLET WITH DUCT FLANGES

Table 2. Dimensions

Dimension

(See Figure 1)

Unit Size

125 150, 175 200, 225 250 300 350 400

Inches ±1/8 (mm ±3)

A 32-1/4 (819) 35-1/4 (895)

B 25-1/4 (641) 30-3/4 (781) 36-1/4 (921) 43-1/2 (1105) 44-1/2 (1130) 50 (1270) 55-1/2 (1410)

D 15-1/4 (387) 20-3/4 (527) 26-1/4 (667) 33-1/2 (851) 34-1/2 (876) 40 (1016) 45-1/2 (1156)

E 8-1/8 (206) 10-3/4 (273) 9-3/4 (248) 10-3/4 (273)

F 16-1/4 (413) 21-3/4 (552) 27-1/4 (692) 34-1/2 (876) 35-1/2 (902) 41 (1041) 46-1/2 (1181)

G 7 (178) 10 (254) 9 (229) 10 (254)

H 17-3/4 (451) 23-1/4 (591) 28-3/4 (730) 36 (914) 37 (940) 42-1/2 (1080) 48 (1219)

J 17-3/8 (441) 22-7/8 (581) 28-3/8 (721) 35-5/8 (905) 38-5/8 (930) 42-1/8 (1070) 47-5/8 (1210)

K 17 (432) 18-3/8 (467) 17 (432) 16 (406) 17 (432) 18-3/8 (467) 17 (432)

L 1/2 (13) 3/4 (19)

M 40-1/4 (1022) 39 (991) 40-1/4 (1022) 39-1/4 (997) 40-1/4 (1022) 39 (991) 40-1/4 (1022)

N 27-3/4 (705) 30-3/4 (781)

SCE-IOM (01-22) 207697-B

Clearances

Clearance to combustibles is deﬁned as the minimum distance—from the heater to a surface or object—that is

necessary to ensure that a surface temperature of 90°F (50°C) above the surrounding ambient temperature is not

exceeded. For safety and convenience, ensure that the clearances listed in Table 4 are provide as shown in the

following table. Minimum clearances are also listed on the heater rating plate.

Table 3. Weights

Unit Size

125 150, 175 200, 225 250, 300 350 400

Net Weight (Pounds (kg))

313 (142) 358 (162) 382 (173) 482 (219) 498 (226) 560 (254)

Weights

Before installation, check the supporting structure to ensure that it has sufﬁcient load-carrying capacity to support

the weight of the unit. Refer to Table 3, which lists unit weight based on unit size.

Location

⚠ CAUTION ⚠

Do not locate the heater where it may be exposed to water spray, rain, or dripping water.

•For best results, the heater should be placed with certain rules in mind. In general, a unit should be located from

8–12 feet (2.6–3.6 meters) above the ﬂoor. Units should always be arranged to blow toward or along exposed wall

surfaces, if possible. Where two or more units are installed in the same room, a general scheme of air circulation

should be maintained.

•Suspended heaters are most effective when located as close to the working zone as possible, and this fact should

be kept in mind when determining the mounting heights to be used. However, avoid directing the discharged air

directly on the room occupants.

•Partitions, columns, counters, or other obstructions should be taken into consideration when locating the unit heater,

so that a minimum quantity of airﬂow will be deﬂected by such obstacles. When units are located in the center of the

space to be heated, the air should be discharged toward the exposed walls. In large areas, units should be located

to discharge air along exposed walls with extra units provided to discharge air in toward the center of the area.

•At those points where inﬁltration of cold air is excessive, such as at entrance doors and shipping doors, it is

desirable to locate the unit so that it will discharge directly toward the source of cold air from a distance of 15–20

feet (4.5–6 meters).

Hazards of Chlorine

⚠ WARNING ⚠

SC series separated-combustion units are not designed or approved for use in atmospheres

containing ﬂammable vapors or atmospheres highly-laden with chlorinated vapors.

Table 4. Clearances

Unit Surface Minimum Clearances (Inches (mm))

Top 6 (152)

Control side 6 (152) + width of unit

Side opposite controls 6 (152)

Bottom, to combustibles 6 (152)

Bottom, to noncombustibles 0 (0)

8SCE-IOM (01-22) 207697-B

GENERAL INFORMATION—CONTINUED

Hazards of Chlorine—Continued

NOTE: Remember, chlorine is heavier than air.This fact should be kept in mind when determining

the installation location of heaters and building exhaust systems.

The presence of chlorine vapors in the combustion air of heating equipment presents a potential corrosion hazard.

Chlorine, found usually in the form of Freon or degreaser vapors, when exposed to ﬂame will precipitate from the

compound and form a solution with any condensation present in the heat exchanger or associated parts. The result

is hydrochloric acid, which readily attacks all metals, including 300 grade stainless steel. Care should be taken to

separate these vapors from the combustion process. This may be done by wise location of the unit vent terminal

and combustion air inlet with regard to exhausters or prevailing wind directions.

INSTALLATION

NOTE: Before installation,make preparations for necessary supplies,tools,and manpower.

Uncrating/Unpacking

•The furnace is shipped completely-assembled. Immediately upon uncrating, check the gas speciﬁcations and

electrical characteristics on the unit’s rating plate to be sure that they agree with the gas and electric supply at

the installation site.

•Check the unit for any damage that may have been incurred during shipment. If damage is found, document the

damage with the transporting agency and immediately contact your Distributor. If you are an authorized Distributor,

follow the FOB freight policy procedures.

NOTE: After removing the shipping clips that fasten the unit to the crate, it is required that the

bolts that attach the shipping clips be reinstalled for support.

•The bottom corners are fastened to the crate using angled shipping clips. Remove the bolts from the shipping

clips and remove the clips. Reinstall the bolts on the heater legs to support the corner leg and the heater bottom.

•To protect the unit during shipping, blower models have special supports that must be removed before installation.

Remove the special supports as follows:

• Blower support legs: Remove the blower support legs and screws.

• Motor shipping block: Remove the wooden block located under the motor bracket. Find the two rubber pads

shipped in the instruction envelope. Place these pads on the ends of the motor bracket bolts.

• Motor shipping plate: Units equipped with motors of 1-1/2 HP or less have a metal shipping plate attached between

the motor and the blower housing. The shipping plate must be removed and the plate and screws discarded. on

a unit factory-equipped with an optional belt guard, the belt guard must be removed to reach the shipping plate.

• Concentric adapter box: The concentric adapter box assembly in the venting/combustion air kit (option CC2

or CC6) is required on all separated-combustion models. Ensure that the concentric adapter box carton is at the

installation site (refer to parts list in Table 8 or Table 10).

Shipped-Separate Parts

Some gas control options have parts that are either shipped loose—with the heater—or shipped separate. Before

beginning installation, ensure that any shipped-separate parts ordered are available at the site. Shipped-separate

options could include a shutoff valve, a condensate drain kit, a thermostat, a remote console, a disconnect switch, or

high-temperature vent sealing tape. Also, if your unit is equipped with any of the gas control options listed in Table

5, ensure that these parts are available at the job site.

SCE-IOM (01-22) 207697-B

Suspension

⚠ WARNING ⚠

Units must be level for proper operation. Do not place additional weight on or add additional weight

to the suspended unit.

The unit has four-point suspension (see hanger center line dimensions shown in Figure 1). At each suspension point,

the unit is factory-equipped with a free-turning, female, 1-inch NPT pipe hanger. Suspend the unit by connecting the

pipe hanger to a 1-inch threaded pipe. See Figure 2 for the standard and alternative suspension methods. The factory-

installed pipe hanger may be removed and the heater may be suspended as shown in the right view of Figure 2.

Figure 2. Suspension Methods

Mounting

NOTE: Support is required where furnace and blower cabinets meet.

•Model SCE requires six mounting support locations—three on each side—as shown in Figure 3.

Table 5. Shipped-Separate Parts for Gas Control Options

Application Option Part(s)

Heating AG7 Thermostat (PN 48033)

Makeup air

AG3 Control switch (PN 29054)

AG8 Control switch (PN 29054); sensor and mixing tube (PN 48041)

AG9 Control switch (PN 29054); remote temperature selector (PN 48042); sensor and mixing tube (PN 48041)

AG15,

AG16

Control switch (PN 29054); remote temperature selector (PN 115848); stage adder module (PN 115849); discharge

air sensor holder (PN 115850); discharge air sensor holder bracket (PN 213612); AG16 also includes temperature

display (PN 115852)

AG39 Remote temperature selector (PN 174849); temperature sensor (PN 133228); mixing tube (PN 90323)

NOTE: If an optional remote console is ordered, the control switch and temperature selector may be mounted on the console.

Figure 3. Support Locations

10 SCE-IOM (01-22) 207697-B

Figure 4. Corner Mounting Supports

Duct Connections

Refer to Table 6 for duct connection dimensions.

FIELD-FABRICATED

AVAILABLE AS A PA RT

INSTALLATION—CONTINUED

Mounting—Continued

•Supports (PN 74487) available from the manufacturer or ﬁeld-fabricated legs, as shown in Figure 4, may be

used at the four corner support locations. Do not use this type of support at the center support locations between

the furnace and the blower section. At the center locations, a ﬁeld-fabricated angle-iron brace support must

extend horizontally, jointly supporting a portion of both the furnace and the blower cabinet. All supports must be

noncombustible.

Table 6. Duct Connection Dimensions

Unit Size

125 150, 175 200, 225 250, 300 350 400

Dimension G (Inches (mm)*

15-1/4 (387) 20-3/4 (527) 26-1/4 (667) 34-1/2 (876) 40 (1016) 45-1/2 (1156)

*See Figure 5.

Figure 5. Duct Connection Dimensions

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