Reznor UDAP, UDAS Installation Manual

CQS

Table of Contents

Page

Warnings ........................................ 1

Installation/Operation .............. 2-25

Check/Test/Startup ................. 26-28

Maintenance/Service .............. 28-36

Index (by page)

Burner .................................................. 16, 29

Burner Orifice............................................ 30

Burner Removal.......................................... 29

California W arning Label..............................3

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

Installation Codes ........................................ 2

Confined Space (UDAP) ..............................8

Dimensions ............................................... 4-5

Disconnect, Built-in (UDAS)................ 16, 34

Door Switch (UDAS) ........................... 19, 33

Downturn Nozzle (Option) ...........................4

Electrical Connections ............................... 16

Fan ............................................................. 32

Fan Motor ............................................. 22, 32

Flame Rollout Switch .......................... 19, 34

Gas Piping and Pressures ........................... 12

Gas Valve .............................................. 22, 33

General ........................................................ 2

Hanging the Heater ..................................... 10

Hazard Intensity Levels ............................... 2

Heat Exchanger Maintenance .....................29

High Altitude .......................................... 7, 14

Ignition System ..................................... 19, 31

Limit Control ........................................ 18, 33

Location (Heater).......................................... 9

Maintenance Schedule ............................... 28

Pressure Switch (Combustion Air)....... 18, 33

Replacement Parts ................ See Form P-UD

Sound Data .................................................. 6

Startup ........................................................26

Suspending Heater ....................................... 4

Technical Data ..............................................6

Thermostat (Option) .................................. 17

Throw (Heater) ............................................. 9

Transformer ................................................ 33

Troubleshooting ................................... 34-36

Uncrating and Preparation ........................... 3

Valve Outlet Pressure ..................................14

Vent System ............................................... 34

Venter Motor .............................................. 32

V enting UDAP .......... Use Form I-UD-V-PV

V enting UDAP-CV .......... Use Form I-V-CV

V enting UDAS........... Use Form I-UD-V-SC

Warranty ....................................................... 3

Wiring Diagrams .................................. 23-25

Series Fan-Type

Unit Heaters

Installation/Operation FORM RZ-NA I-UDA

APPLIES TO: Models UDAP and UDAS

FOR YOUR SAFETY

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.

• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.

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

FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operation, and maintenance instructions thoroughly before installing or servicing this equipment.

WARNING: 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. See Hazard Levels, page 2.

WARNING: Should overheating occur, or the gas supply fail to shut off, shut off the manual gas valve to the appliance before shutting off the electrical supply.

WARNING: Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and replace any gas control that has been under water.

Form RZ-NA I-UDA, Mfg #195673 Rev 9, Page 1

Hazard Levels of W arnings in this Manual

HAZARD INTENSITY LEVELS

1. DANGER: Failure to comply will result in severe personal injury or death and/or property damage.

2. WARNING: Failure to comply could result in sever e personal injury or death and/or property damage.

3. CAUTION: Failure to comply could result in minor personal injury and/or property damage.

1. General

BOTH this manual and the correct venting manual are REQUIRED for installation of this heater.

Model UDAP 30, 45, 60, 75, 100, and 125 and Model UDAS 30, 45, 60, 75, 100, and 125 are design certified by the Canadian Standards Association for use in residential, industrial, and commercial installations. Unit heaters certified for “residential use” are intended to be used as supplementary heating devices in residential areas such as workshops and garages. They are not intended to be the primary source of heat in residential applications or to be used in sleeping quarters.

Models UDAP 150, 175, 200, 225, 250, 300, 350, and 400 and UDAS 150, 175, 200, 225, 250, 300, 350, and 400 are design certified by the Canadian Standards Association for use in industrial and commercial installations only .

All models and sizes are available for use with either natural or propane gas. The type of gas, the input rate and the electrical supply requirement is shown on the heater’s rating plate. Check the rating plate to determine if the heater is appropriate for the intended installation.

Installation requires both this manual AND the venting manual.

V enting Manual by Model

Venting Instruction Look for Matching Label on

Model Manual by Form No. Venting Manual and Heater UDAP Standard Power Vent Label with

Installation (each heater Red Square has its own dedicated vent)

- Form RZ-NA I-UD-V-PV

UDAP-CV Optional Common Vent Label with with Installation (must be inverted Option equipped with Option AV6) Blue Triangle AV6 - Form RZ-NA I-V-CV

Model UDAP-CV is available in Sizes 30, 45, 60, 75, 100 only UDAS Separated Combustion Label with

- Form RZ-NA I-UD-V-SC Green Circle

2. Installation Codes

Form RZ-NA I-UDA, P/N 195673 Rev 9, Page 2

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, ANSI Z223.1. A Canadian installation must be in accordance with the CSA B149 Installation Codes. These codes are available from CSA Information Services, 1-800-463-6727. Local authorities having juris-

Both this installation manual and the appropriate venting manual are shipped with the heater. Verify that the literature is correct for the heater being installed. If either manual is missing or incorrect, contact your distributor before beginning installation.

The instructions in this manual apply only to the models listed. Installation should be done by a qualified agency in accordance with these in-

structions. The qualified service agency installing this heater is responsible for the installation.

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

Special Installations (Aircraft Hangars/ Repair Garages/ Parking Garages)

California Warning Label

Massachusetts Requirement

3. W arranty

Installations in aircraft hangars should be in accordance with ANSI/NFPA No. 409 (latest edition), Standard for Aircraft Hangars; in public garages in accordance with ANSI/NFPA No. 88A (latest edition), Standard for Parking Structures; and for repair garages in accordance with ANSI/NFPA No. 88B (latest edition), Standard for Repair Garages. In Canada, installations in aircraft hangars should be in accordance with the requirements of the enforcing authorities, and in public garages in accordance with CSA B149 codes.

If the heater is being installed in the state of California, the installer MUST attach a warning label on the outside of the access door. The California Warning label is shipped in the owner’s envelope along with this manual, the warranty form, and any other paperwork that applies.

If installation is in California, select a location on the heater access panel. Be sure the surface is clean and dry and adhere the label.

If the heater is being installed in the Commonwealth of Massachusetts, these units must be installed by a licensed plumber or licensed gas fitter .

Refer to the limited warranty information on the Warranty Card in the "Owner's Envelope".

Warranty is void if ...

a. Wiring is not in accordance with the diagram furnished with the heater. b. The unit is installed without proper clearance to combustible materials. c. A fan model is connected to a duct system or if the air delivery system is

modified.

4. Uncrating and Preparation

This unit was test operated and inspected at the factory prior to crating and was in operating condition. If the heater has incurred any damage in shipment, document the damage with the transporting agency and contact an authorized Reznor Distributor. If you are an authorized Distributor, follow the FOB freight policy procedures as published by Thomas & Betts for Reznor products.

Check the rating plate for the gas specifications and electrical characteristics of the heater to be sure that they are compatible with the gas and electric supplies at the installation site.

Read this booklet and become familiar with the installation requirements of your particular heater. If you do not have knowledge of local requirements, check with the local gas company or any other local agencies who might have requirements concerning this installation.

Before beginning, make preparations for necessary supplies, tools, and manpower. If the installation includes optional vertical louvers, downturn nozzle, ceiling mounting bracket, hanger kit, high altitude kit, multiple heater control, and/or stepdown transformer, install these options before the heater is suspended. Follow the instructions included in the option package; option packages are shipped separately .

Other shipped separate items could include a vent/combustion air kit, high temperature tape, a thermostat bracket kit, a thermostat, and/or a thermostat guard. Be sure all options ordered are at the installation site.

IMPORTANT: Shipping brackets are attached with cabinet screws. When removing shipping brackets, re-insert ALL screws into the cabinet.

Form RZ-NA I-UDA, Mfg #195673 Rev 9, Page 3

5. Dimensions

M and N - Hanger Dimensions for both 2-pt and 4-pt Suspension

P and Q -

Hanger

for 4-pt

(4-pt is

3/8-16 Female Thread

- all suspension points

Dimensions

Suspension

required if

installing

optional

nozzle.)

TOP VIEW

R - Hanger Dimension for 2-pt Suspension

(30-125 Ver tical;

150-400 Horizontal)

Thermostat Connection

FIGURE 1 - Model UDAP,

Combustion Air Inlet

REAR

Power Vented Fan Model

VIEW

Line Voltage

Inlet (connects

at circuit board)

FRONT

VIEW

1-1/4

(32)

External Gas

Connection

RIGHT SIDE

VIEW

(Access Panel)

Vent Collar

(see Technical Data for size)

REZNOR

MODEL UDAP DIMENSIONS (inches ± 1/16)

Size

30, 45

75 100 125

150, 175,

200

225, 250

300, 350,

400

MODEL UDAP DIMENSIONS (mm ± 2)

Size A B C D E F G H J K M N P Q R

30, 45

75 100 125

150, 175,

200

225, 250

300, 350,

400

FIGURE 2 With Optional Downturn Nozzle Dimension “U”

-- Applies to both UDAP and UDAS

Form RZ-NA I-UDA, P/N 195673 Rev 9, Page 4

ABC D EF G H J K MNPQ R

12-1/8 26-5/8 10 13-13/16 26 21-9/16 5-3/16 6-1/2 2-11/16 3-7/8 17-3/8 11/16 4-5/16 13 9-9/16 15-1/8 26-5/8 13 13-13/16 27 21-9/16 7-7/8 6-1/2 5 -1/2 3-7/8 17-3/8 11/16 4-5/16 13 10-1/2 15-1/8 26-5/8 13 13-13/16 27-5/8 21-9/16 7-7/8 6-1/2 5-1/2 3-7/8 17-3/8 11/16 4-5/16 13 10-1/2 23-1/8 26-5/8 21 13-13/16 28-5/8 21-9/16 14-1/2 6-1/2 8-3/4 3-7/8 17-3/8 11/16 4-5/16 13 10-1/2 23-1/8 26-5/8 21 13-13/16 29-3/8 21-9/16 14-1/2 6-1/2 8-3/4 3-7/8 17-3/8 11/16 4-5/16 13 10-1/2

20-1/8 38-3/16 16 23 42 35-3/8 8-1/2 8-1/4 5-7/16 6-1/2 25-11/16 1-3/8 8-3/16 22-3/16 16-3/8 26-1/8 38-3/16 22 23 42 35-3/8 13-1/16 8-13/16 9 6-1/2 25-11/16 1-3/8 8-3/16 22-3/16 15-5/8 34-1/8 41 30 23 42 35-3/8 17-1/16 9 11-13/16 7-5/16 27-11/16 1-3/8 8-3/16 22-3/16 16-3/16

308 676 254 351 660 548 132 165 6 8 98 441 17 110 330 243 384 676 330 351 686 548 200 165 140 98 441 17 110 330 267 384 676 330 351 702 548 200 165 140 98 441 17 110 330 267 587 676 533 351 727 548 368 165 222 98 441 17 110 330 267 587 676 533 351 746 548 368 165 222 98 441 17 110 330 267

511 970 406 584 1067 899 216 210 138 165 652 35 208 564 416 664 970 559 584 1067 899 332 224 229 165 652 35 208 564 397 867 1041 762 584 1067 899 433 229 300 186 703 35 208 564 411

Downturn nozzles require 4-pt suspension.

With

UDAP or UDAS

Option CD2 or CD4

UDAP or UDAS

With

Option

CD3

U U

Size

30, 45 60, 75 100, 125 150, 175, 200 225, 250 300, 350, 400

Options CD2 and CD4

inch es mm inch es mm

7-1/8 181 12-3/8 314

8-5/8 219 15 381 12-5/8 321 21-7/8 556 11-1/2 292 19-7/8 505 14-1/2 368 25-1/8 638 18-1/2 470 32 813

Option CD3

P and Q -

Hanger

Dimensions

for 4-pt

Suspension

(4-pt is

required if

installing

optional

nozzle.)

M and N - Hanger Dimensions

for both 2-pt and 4-pt Suspension

3/8-16 Female Thread

- all suspension points

TOP VIEW

R - Hanger Dimension for 2-pt Suspension

Thermostat

Connection

(30-45, 150-400

Horizontal;

60-125 Vertical)

FIGURE 3 - Model UDAS,

Separated Combustion Fan

Model

Combustion Air Connection

(see Technical Data for size)

REAR

VIEW

Line Voltage

Inlet (connects in

sealed electrical box)

1-1/4

(32)

FRONT

VIEW

(Access Panel)

REZNOR

External Gas

Connection

RIGHT SIDE

VIEW

LED Viewport

Vent Connection

(see Technical Data for size)

MODEL UDAS DIMENSIONS (inches ± 1/16)

Size

30, 45

150, 175,

225,

300, 350,

ABCD EF GH J KMNPQ R S T

12-1/8 26-5/8 10 13-13/16 26 21-9/16 5-3/16 6-1/2 2-11/16 3-7/8 17-3/8 11/16 4-5/16 13 9-9/16 2-15/16 2-15/16

15-1/8 26-5/8 13 13-13/16 27 21-9/16 7-7/8 6-1/2 5-1/2 3-7/8 17-3/8 11/16 4-5/16 13 10-1/2 3-1/4 2-15/16

15-1/8 26-5/8 13 13-13/16 27-5/8 21-9/16 7-7/8 6-1/2 5-1/2 3-7/8 17-3/8 11/16 4-5/16 13 10-1/2 3-1/4 2-15/16

100

23-1/8 26-5/8 21 13-13/16 28-5/8 21-9/16 14-1/2 6-1/2 8-3/4 3-7/8 17-3/8 11/16 4-5/16 13 10-1/2 4-5/8 2-15/16

125

23-1/8 26-5/8 21 13-13/16 29-3/8 21-9/16 14-1/2 6-1/2 8-3/4 3-7/8 17-3/8 11/16 4-5/16 13 10-1/2 4-5/8 2-15/16

20-1/8 38-3/16 16 23 42 35-3/8 8-1/2 8-1/4 5-7/16 6-1/2 25-11/16 1-3/8 8-3/16 22-3/16 16-3/8 4-1/8 8-5/16

200

26-1/8 38-3/16 22 23 42 35-3/8 13-1/16 8-13/16 9 6-1/2 25-11/16 1-3/8 8-3/16 22-3/16 15-5/8 5-9/16 8-5/16

250

34-1/8 41 30 23 42 35-3/8 17-1/16 9 11-13/16 7-5/16 27-11/16 1-3/8 8-3/16 22-3/16 16-3/16 9-1/16 8-9/16

400

MODEL UDAS DIMENSIONS (mm ± 2)

Size A B C D E F G H J K M N P Q R S T

30, 45

75 100 125 150, 175,

200

225,

250 300, 350,

400

308 676 254 351 660 548 132 165 68 98 441 17 110 330 243 384 676 330 351 686 548 200 165 140 98 441 17 110 330 267 384 676 330 351 702 548 200 165 140 98 441 17 110 330 267 587 676 533 351 727 548 368 165 222 98 441 17 110 330 267 587 676 533 351 746 548 368 165 222 98 441 17 110 330 267

511 970 406 584 1067 899 216 210 138 165 652 35 208 564 416

664 970 559 584 1067 899 332 224 229 165 652 35 208 564 397

867 1041 762 584 1067 899 433 229 300 186 703 35 208 564 411

Form RZ-NA I-UDA, Mfg #195673 Rev 9, Page 5

75 75 89 75

89 75 117 75 117 75

105 211

141 211

230 217

6. T echnical Dat a

TECHNICAL DATA - Sizes 30 - 125 (Data app li es to both Mod els UDAP and UDAS unless noted otherwise.)

Size 30 45 60 75 100 125

Inp ut Heating C apacity Thermal Efficiency (%) 828383838383 Output Heating Capacity

Gas Conne c t ion (inches) Vent Connection

C ombustion Air Inlet

(inches diam e t e r)

(inches diameter) Control Amps (24 volt) 1.0 1.0 1.0 1.0 1.0 1.0 Full Load Amps (115 volt) 1.9 2.4 2.4 3.3 3.9 5.1

Maximum Ov er Cu rrent Protection

D E

Normal Power Consumption (watts) 109 155 155 217 276 354 Discharge Air Temperature Rise (°F) 50 55 60 60 60 60

Ai r Vol ume

Discharge Air Opening Area

Output Vel ocity

Fan Motor HP

Fan Motor RPM 1550 1550 1550 1550 1050 1050 Fan Diameter (inches) 10 10 12 12 16 16 Sound Level dba @ 15 ft 40 40 40 49 54 55

TECHNICAL DATA - Sizes 150 - 400

Size 150 175 200 225 250 300 350 400

In pu t Heating Capacity Thermal Efficiency (%) 8383838383838383 Output Heating Capacity

Gas C onnection (inches) Vent Connection

Combustion Ai r Inlet

(inches di a meter )

(inche s diameter) Control Amps (24 volt) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Full Load Amps (115 volt) 3.8 3.8 4.6 7.5 7.5 10.7 10.7 10.7

Maximum Ov er Current Protection

D E

Normal Power Consumption (watts) 392 392 491 747 747 1086 1086 1086 Discharge Air Temperature Rise (°F) 60 60 60 60 60 60 60 60

Ai r Volume

Discharge Air Opening Area

Output Velocity

Fan Motor HP

Fan Motor RPM 1050 1050 1050 1050 1050 1050 1050 1050 Fan Diameter (inches) 18 18 18 20 20 24 24 24 Sound Level dba @ 15 ft 51 52 53 56 56 59 61 62

CSA ratings for altitudes to 2000 ft.

Size shown is for gas connection to a single-stage gas valve, not supply line size.

Smaller and/or larger vent and combustion air pipe diameters may be permissible. For Model UDAS refer to the Venting

Installation Manual for Separated Combustion Units. For Model UDAP refer to the Venting Installation Manual for Power Vented units. For a Model UDAP with Option AV6, refer to the Venting Installation Manual for Common Venting.

MOCP = 2.25 x (largest motor FLA) + smallest motor FLA. Answer is rounded to the next lower standard circuit breaker size.

Except where indicated, information in this table is based on a heater equipped with a standard 115 volt open fan motor.

Form RZ-NA I-UDA, P/N 195673 Rev 9, Page 6

BTUH 30,000 45,000 60,000 75,000 105,000 120,000

kw 8.8 13.2 17.6 22.0 30.8 3 5.2

BTUH 24,600 37,350 49,800 62,250 87,150 99,600

kw 7.2 11.0 14.6 18.3 25.6 2 9.2

Natural 1/2 1/2 1/2 1/2 1/2 1/2

Pro pane 1/2 1/2 1/2 1/2 1/2 1/2

444444

UDAS only

444444

Standard 115V 15 15 15 15 15 15

Optional 208V or 230V 15 15 15 15 15 15

CFM 456 629 769 961 1345 1537

/minute

12.9 17.8 21 .8 27.5 36.7 45.9

0.96 0.96 1.25 1.25 2.01 2.01

0.09 0.09 0.12 0.12 0.19 0.19

FPM 475 656 616 770 668 763

M/minute 145 200 188 238 196 245

Standard Open 0.02 0.03 0.03 0.06 1/30 1/20

Optional Enclosed N.A. N.A. N.A. N.A. 1/4 1/4

(Data applies to both Model s UDAP and UDAS unless noted otherwise.)

BTUH 150,000 175,000 200,000 225,000 250,000 300,000 350,000 400,000

kw 43.9 51.2 58.6 65.9 73.2 87.8 102.5 117.1

BTUH 124,500 145,250 166,000 186,750 207,500 249,000 290,500 332,000

kw 36.4 42.5 48.6 54.7 60.8 72.9 85.1 97.2

Natural 1/2 1/2 1/2 3/4 3/4 3/4 3/4 3/4

Propane 1/2 1/2 1/2 3/4 3/4 3/4 3/4 3/4

55555666

UDAS only

666666

Standard 115V 1515151515202020

Optional 208V or 230V 15 15 15 15 15 15 15 15

CFM 1921 2242 2562 2882 3202 3843 4483 5123

/minute

54.4 63.5 72.5 81.6 90.7 108.8 126.9 145.1

2.56 2.56 2.56 3.51 3.51 4.79 4.79 4.79

0.24 0.24 0.24 0.33 0.33 0.45 0.45 0.45

FPM 752 877 1003 820 911 802 936 1069

M/minute 229 267 306 250 278 244 285

Standard Open 1/6 1/6 1/6 1/4 1/4 1/2 1/2 1/2

Optional Enclosed 1/4 1/4 1/4 1/4 1/4 1/2 1/2 1/2

7. High Altitude

If the heater is being installed at an elevation above 2000 ft (610M), the input rate will have to be derated. This is done by adjusting the valve outlet pressure.

Operation

In addition, if the heater is being installed at an altitude above 6000 ft (1830M), the pressure switch will have to be changed. If ordered with the unit as Option DJ20 or DJ21, the pressure switch is shipped separately.

Gas valve adjustment for high altitude can only be done after heater is operating; see Paragraph 12.

Adjusting the valve outlet pressure is done after the heater is in operation; follow the instructions in Paragraph 12. Capacities and inputs for derated units are also listed in Paragraph 12.

If the pressure switch needs to be changed, do that before the heater is operated; follow the instructions in FIGURE 4.

FIGURE 4 - Installing High Altitude Pressure Switch required above 6000 ft (1830M) elevation

Model UDAP Size 30 45 60 75 100 125 150 175 200 225 250 300 350 400

High Altitude Switch P/N Negative Pressure OFF Setpoint "w.c. Label color

Model UDAP-CV with Option AV6 for Common Venting Size 30 45 60 75 100

Hig h Altitude Switch P/N 197029 197032 196388 Negative Pressure OFF Setpoint " w.c. 0.60 0.45 0.50 Label color Lt Blue Pink Orange

Model UDAS Size 30 45 60 75 100 125 150 175 200 225 250 300 350 400

Hig h Altitude Switch P/N 196388 197030 Dif ferential Pressure OFF Setpoint "w.c. 0.50 0.40 Label c olor Orange Green

197031 197032

0.35 0.45

Purple Pink

196362

0.55

White

197029

0.60

Lt. Blue

197031

0.35

Purple

197031

Purple

0.35

201160

1.00

Brown

201160 201161

1.00 1.30

Brown

201161

1.30

White

Pressure Switch

8. Clearances

Clearances

Size

30 - 12 5

150 - 4 00

*Suspend t he heater so that the bot t om is a minimum of 5 feet (1 .5 M) above the floor.

Instructions for Changing Pressure Switch

1. In the control compartment, locate the pressure switch.

2. Mark and disconnect the two wires attached to the pressure switch.

3. Disconnect the sensing tube from the pressure switch.

4. Locate the two screws holding the switch mounting bracket. Remove the screws (save screws) and the pressure switch.

5. Using the same screws, install the high altitude pressure switch. Attach the sensing tube and wires.

Units must be installed so that the clearances in the table are provided for combustion air space, inspection and service, and for proper spacing from combustible construction. 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 above the surrounding ambient temperature is not exceeded.

T op F lue Connector Access Panel Non- Access Sid e

inches mm inches mm in ches mm inches m m inches mm inches mm

125 6 152 4102 6 152

18 457 1 25 1 25 18 457 18 457 2 51 1 25 18 457

Bottom* Rear

Form RZ-NA I-UDA, Mfg #195673 Rev 9, Page 7

9. Combustion Air -

applies to Model UDAP and Model UDAP-CV

(Note: For Model UDAS, see V enting Manual for combustion air requirements.)

This heater must be supplied with the air that enters into the combustion process and is then vented to the outdoors. Sufficient air must enter the equipment location to replace that exhausted through the heater vent system. In the past, the infiltration of outside air assumed in heat loss calculations (one air change per hour) was assumed to be sufficient. However , current construction methods using more insulation, vapor barriers, tighter fitting and gasketed doors and windows, weatherstripping, and/or mechanical exhaust fans may now require the introduction of outside air through wall openings or ducts.

The requirements for combustion and ventilation air depend upon whether the unit is located in a confined or unconfined space. An "unconfined space" is defined as a space whose volume is not less than 50 cubic feet per 1000 BTUH of the installed appliance. Under ALL conditions, enough air must be provided to ensure there will not be a negative pressure condition within the equipment room or space.

WARNING: Model UDAP and UDAP-CV power-vented unit heaters are designed to take combustion air from the space in which the unit is installed and are not designed for connection to outside combustion air intake ducts. Connecting outside air ducts voids the warranty and could cause hazardous operation. See Hazard Levels, page 2.

Combustion Air Requirements for a Heater Located in a Confined Space - applies to Model UDAP and Model UDAP-CV

FIGURE 5 - Definition of Confined Space and Required Openings for Combustion Air

Do not install a unit in a confined space without providing wall openings leading

to and from the space. Provide openings near the floor and ceiling for ventilation and air for combustion as shown in FIGURE 5, depending on the combustion air source as noted in Items 1, 2, and 3 below.

Add total BTUH of all appliances in the confined space and divide by figures below for square inch free area size of each (top and bottom) opening.

Confined Space: A space whose volume is less than 50 cubic feet per 1000 BTUH of the installed appliance input rating

1. Air from inside the building -- openings 1 square inch free area per 1000

BTUH. Never less than 100 square inches free area for each opening. See (1) in

FIGURE 5.

2. Air from outside through duct -- openings 1 square inch free area per 2000 BTUH. See (2) in FIGURE 5.

3. Air direct from outside -- openings 1 square inch free area per 4000 BTUH. See (3) in FIGURE 5.

(3)

Confined

Space

(3)

(1)

(2)

NOTE: For further details on supplying combustion air to a confined space, see the National Fuel Gas Code ANSI Z223.1a (latest edition).

Form RZ-NA I-UDA, P/N 195673 Rev 9, Page 8

10. Unit Heater

Location

Use the sound data in Paragraph 6, clearances in Paragraph 8; the combustion air requirements in Paragraph 9; the throw tables, mounting height requirements, and location recommendations below; the weights in Paragraph 11; and the venting requirements in the Venting Manual to determine where to suspend the heater.

Heater Throw

*Louver angle listed in the table is relative to the top of the heater.

FIGURE 6 - Throw for Fan Models UDAP and UDAS

NOTE: Throws listed are with

standard adjustable horizontal louvers at the angles listed (angle is relative to the top of the heater). Throw pattern changes with the addition of optional vertical louvers and/or downturn nozzles.

Dimensio ns X, Y, and Z (feet ) Mo del UDAP and Mo del U DAS with Standard Horizo nt al Louv ers at Mount ing Heights of 5 - 18 ft

5 ft 6 14 30 -21° 7 16 40 -20° 8 18 45 -16° 9 20 57 -14° 9 20 59 -18° 10 22 65 -14°

8 ft 7 13 26 -39° 9 16 37 -34° 10 18 42 -29° 12 22 54 -25° 11 21 56 -28° 12 23 63 -24° 10 ft 6 11 22 -52° 9 15 33 -43° 10 17 39 -37° 12 22 52 -32° 12 20 52 -36° 13 24 60 -30° 12 ft - - - - 8 12 27 -55° 10 16 34 -46° 12 21 48 -39° 11 19 47 -44° 14 23 57 -36° 14 ft - - - - - - - - 9 14 29 -56° 12 19 44 -46° 11 17 42 -51° 14 22 53 -43° 16 ft - - - - - - - - - - - - 11 17 38 -54° 10 14 34 -58° 13 20 47 -50° 18 ft------------------ --111740-57°

8 ft 13 24 73 -26 ° 15 28 90 -22° 16 30 93 -20° 14 27 86 -24° 16 29 93 -21° 15 28 9 4 -24° 17 31 105 -20° 1 8 34 113 -17° 10 ft 14 24 69 -32° 17 29 87 -27° 17 31 91 -25° 15 27 82 -30° 17 30 90 -26° 16 28 89 -29° 18 32 103 -25° 20 35 110 -21° 12 ft 14 24 64 -39° 18 29 84 -32° 18 31 88 -30° 16 27 78 -35° 18 30 87 -31° 17 28 85 -34° 19 32 98 -30° 21 36 108 -25° 14 ft 14 22 59 -45° 18 28 79 -37° 19 30 84 -34° 16 26 73 -41° 18 30 83 -36° 17 27 80 -40° 20 32 95 -34° 23 35 105 -29° 16 ft 13 20 53 -51° 18 27 74 -42° 19 29 79 -39° 16 24 67 -47° 19 28 78 -41° 17 25 74 -45° 21 31 90 -38° 23 35 101 -33° 18 ft 11 17 44 -58° 17 26 68 -48° 19 28 74 -44° 14 22 60 -53° 18 27 72 -46° 16 24 66 -51° 20 30 85 -43° 23 35 97 -37°

Dimensions X, Y, and Z (meters) Model UDAP and Model UDAS with Standard Horizontal Louv ers at Mounting Heights o f 1.5 - 5.5M

1.5 M 1.8 4.3 9.1 -21° 2.1 4.9 12.2 -20° 2.4 5.5 13.8 -16° 2.7 6.1 17.4 -14° 2.7 6.1 18.0 -18° 3.0 6.7 19.9 -14°

2.4 M 2.1 4.0 7.9 -39° 2.7 4.9 11.3 -34° 3.0 5.5 12.8 -29° 3.7 6.7 16.5 -25° 3.4 6.4 17.1 -28° 3.7 7.0 19.2 -24°

3.0 M 1.8 3.4 6.7 -52° 2.7 4.6 10.0 -43° 3.0 5.2 11.9 -37° 3.7 6.7 15.8 -32° 3.7 6.1 15.8 -36° 4.0 7.3 18.3 -30°

3.7 M - - - - 2.4 3.7 8.2 -55° 3.0 4.9 10.4 -46° 3.7 6.4 14.6 -39° 3.4 5.8 14.3 -44° 4.3 7.0 17.4 -36°

4.3 M - - - - - - - - 2.7 4.3 8.8 -56° 3.7 5.8 13.4 -46° 3.4 5.2 12.8 -51° 4.3 6.7 16.1 -43°

4.9 M - - - - - - - - - - - - 3.4 5.2 11.6 -54° 3.0 4.3 10.4 -58° 4.0 6.1 14.3 -50°

5.5 M------------------ --3.45.212.2-57°

2.4 M 4.0 7.3 22.3 -26° 4.6 8.5 27.4 -22° 4.9 9.1 28.0 -20° 4.3 8.2 26.2 -24° 4.9 8.8 28.3 -21° 4.6 8.5 28.7 -24° 5.2 9.4 32.0 -20° 5.5 11.3 34.4 -17°

3.0 M 4.3 7.3 21.0 -32° 5.2 8.8 26.6 -27° 5.2 9.4 27.7 -25° 4.6 8.2 25.0 -30° 5.2 9.1 27.4 -26° 4.9 8.5 27.1 -29° 5.5 9.8 31.4 -25° 6.1 10.7 33.5 -21°

3.7 M 4.3 7.3 19.5 -39° 5.5 8.8 25.6 -32° 5.5 9.4 26.8 -30° 4.9 8.2 23.8 -35° 5.5 9.1 26.5 -31° 5.2 8.5 25.9 -34° 5.8 9.8 29.9 -30° 6.4 11.0 32.9 -25°

4.3 M 4.3 6.7 18.0 -45° 5.5 8.5 24.1 -37° 5.8 9.1 25.6 -34° 4.9 7.9 22.3 -41° 5.5 9.1 25.3 -36° 5.2 8.2 24.4 -40° 6.1 9.8 29.0 -34° 7.0 10.7 32.0 -29°

4.9 M 4.0 6.1 16.2 -51° 5.5 8.2 22.6 -42° 5.8 8.8 24.1 -39° 4.9 7.3 20.4 -47° 5.8 8.5 23.8 -41° 5.2 7.6 22.6 -45° 6.4 9.4 27.4 -38° 7.0 10.7 30.8 -33°

5.5 M 3.4 5.2 13.4 -58° 5.2 7.9 20.7 -48° 5.8 8.5 22.6 -44° 4.3 6.7 18.3 -53° 5.5 8.2 21.9 -46° 4.9 7.3 20.1 -51° 6.1 9.1 25.9 -43° 7.0 10.7 26.9 -37°

30 45 125

XYZ

150 175 200 225 350 400

XYZ

30 45 60

XYZ

150 175 200

XYZ

Louver

le*

XYZ

Louver

XYZ

Louver

le*

XYZ

Louver

le An

Louver

le*

Louver

le An

Louver

le*

Louver

Z**

H = Distance from bottom of heater to the floor X = Distance from heater to start of floor coverage Y = Distance to end of floor coverage **Z = point when the air velocity drops below 50 ft (15.2M) per minute

XYZ

Louver

XYZ

Louver

XYZ

Louver

XYZ

Louver

75 100

XYZ

le*

XYZ

75 100 125

XYZ

le*

XYZ

XY Z

Louver

le*

XY Z

Louver

XY Z

Louver

le*

XY Z

Louver

250 300

XY Z

Louver

le*

XY Z

Louver

XY Z

Louver

le*

XY Z

Louver

le An

Louver

le*

XYZ

Louver

le An

Louver

le*

XYZ

Louver

le*

XYZ

Louver

le*

XYZ

Louver

400225 250 300 350

le*

Louver

le*

Louver

Location

Locate the heater so that it is a minimum of five feet (1.5M) above the floor and in compliance with the clearances in Paragraph 8.

Recommendations

W ARNING: If touched, the vent pipe and internal heater surfaces that are accessible from outside the heater will cause burns. Suspend the heater a minimum of 5 feet (1.5M) above the floor.

Form RZ-NA I-UDA, Mfg #195673 Rev 9, Page 9

10. Unit Heater Location (cont’d)

NOTE: V enting requirements may affect location. Consult the V enting Manual for this heater before making final determination.

For best results, the heater should be placed with certain rules in mind. In general, a unit should be located from 8 to 12 feet (2.4-3.7M) 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 for best results.

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, care should be exercised to 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 to 20 feet (4.6-6.1M).

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

Hazards of Chlorine applies to location of Model UDAS heater with regard to combustion air inlet

11. Hanging the Heater

WARNINGS: Check the supporting structure to be used to verify that it has sufficient load carrying capacity to support the weight of the unit. Suspend the heater only from the threaded nut retainers or with a manufacturer provided kit. Do NOT suspend from the heater cabinet.

Form RZ-NA I-UDA, P/N 195673 Rev 9, Page 10

The presence of chlorine vapors in the combustion air of gas-fired 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 go into solution with any condensation that is 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 and combustion air terminals with regard to exhausters or prevailing wind directions. Chlorine is heavier than air. Keep these facts in mind when deter mining installation location of the heater in relation to building exhaust systems.

Before suspending the heater, check the supporting structure to be used to verify that it has sufficient load-carrying capacity to support the weight of the unit.

Model UDAP Size

lbs kg

Model UDAS Size

lbs 55 60 68 73 97 102 173 188 204 216 270 295 307 kg 25 27 31 33 44 46 78 85 93 98 122 134 138

When the heater is lifted for suspension, support the bottom of the heater with plywood or other appropriately placed material. If the bottom is not supported, damage could occur . Before hanging, verify that any screws used for holding shipping brackets were re-installed in the cabinet.

The heater is equipped for either two-point or four-point suspension. A 3/8"-16 threaded nut retainer is located at each suspension point. NOTE: Four-point suspension is required when installing an optional downturn nozzle. See Dimensions in Paragraph 5 and the illustration in FIGURE 7A.

30 45 60 75 100 125 150 175, 200 225 250 300 350 400

54 59 67 72 96 101 172 187 203 215 269 294 306 24 27 30 33 44 46 78 85 92 98 122 133 139

30 45 60 75 100 125 150 175, 200 225 250 300 350 400

FIGURE 7A - Suspending

the Heater with Rods from the Threaded Nut Retainers (either two or four point suspension)

WARNING: Unit must be level for proper operation. Do not place or add additional weight to the suspended heater. Hazard Levels, page 2.

FIGURE 7B - Swivel Connectors to Suspend the Heater from 1” Pipe, Option CK8 (2-pt) or CK10 (4-pt)

Be sure the threaded hanger rods are locked to the heater as illustrated. Length of threaded rod extending into the heater MUST NOT exceed 1/2” (13mm).

Add a 3/8 nut and

washer to lock the

hanger rod to the heater.

3/8 threaded rod (field supplied)

Recommended maximum hanger rod length is 6 feet (1.8M).

If ordered with swivel connectors for 1” pipe, Option CK8 or CK10, attach the swivels at the threaded nut retainers. Suspend with 1” pipe. (See FIGURE 7B.)

Be sure the threaded swivel connectors are locked to the heater as illustrated.

Lock the swivel

connector to

the heater. The connector is threaded for

hanging from

a 1 pipe.

FIGURE 8 - Suspending the Heater using Option CK22, Ceiling Suspension Kit (no hanger rods)

FIGURE 9 - Model UDAS Plug the unused suspension points on the control side of the heater with the 1/2” long screws and flat washers. Find the screws and washers in the literature bag shipped inside the heater.

If ordered with a ceiling suspension kit, Option CK22, follow the illustrated instructions in the kit. (See FIGURE 8.)

A vailable for Sizes 30-125. Allows the heater to be installed one inch from the ceiling.

NOR

Model UDAS - Whether using the suspension points or the hanger kit, when installing a Model UDAS, the unused suspension points on the control side of the heater MUST be plugged. Plug these holes with the 1/2” long cap screws and flat washers shipped in the bag with the heater. (See FIGURE 9.)

Plug any unused suspension points on the control side with the 1/2long cap screws and flat washers provide

Control Side

Model UDAS

Form RZ-NA I-UDA, Mfg #195673 Rev 9, Page 11

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