Service manual

ManualsBrandsModine Manufacturing ManualsGas HeaterBD

WARNING

1. Improper installation, adjustment, alteration, service or

maintenance can cause property damage, injury or

death, and could cause exposure to substances which

have been determined by various state agencies to

cause cancer, birth defects, or other reproductive harm.

Read the installation, operating, and maintenance

instructions thoroughly before installing or servicing this

equipment.

2. The installation and maintenance instructions in the unit

manual as well as the following instructions must be

followed to provide safe, efficient and trouble-free

operation. In addition, particular care must be exercised

regarding the special precautions listed on page 2 of the

units Installation and Service Manual. Failure to properly

address these critical areas could result in property

damage or loss, personal injury, or death. These

instructions are subject to any more restrictive local or

national codes.

6-530.13

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CAUTION

This power exhauster (for horizontal or vertical venting) is

designed for use on gas-fired unit heaters and duct furnaces

made by Modine Manufacturing Company. The power

exhauster adapter is to be used with the power exhauster.

Do not use the adapter on any heater model other than that

specified in this manual. A restrictive type vent cap (i.e.

Breidert Type L, Gary Steel 1092) should be used when

power exhausting.

THIS MANUAL IS THE PROPERTY OF THE OWNER.

PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.

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The power exhauster is shipped in two packages. The power

exhaust in one carton and the adapter kit for the unit heater or

duct furnace in a separate carton.

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To overcome venting difficulties of gas-fired unit heaters and

duct furnaces due to:

1. Non-linear or irregular vent runs.

2. Long horizontal vent runs.

3. Negative pressure areas.

4. Low ambient temperature areas restraining natural drafts.

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The PV-124 power exhaust is furnished with tri-voltage

115V/208V-230V single phase motors. Each motor displays a

wiring diagram showing the wiring schematic for 115 V or

208V/230V power. When utilizing 460V 3ø power, a 250VA

transformer must be used to step down to 230V or 115V. The

power exhaust includes a 25-volt factory mounted relay for

operation with the gas unit’s 25-volt control system.

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The power exhaust contains an integrally mounted motor that is

controlled by a room thermostat. When the thermostat senses

the requirement for heat, it starts the exhaust motor. When the

motor reaches proper running speed, a built-in centrifugal switch

closes; thus the automatic gas valve, which is electrically in

series with the switch, becomes energized and gas flows to the

burner. When the thermostat is satisfied, the exhaust motor

stops, centrifugal switch opens, and gas valve closes. If the

motor does not run or reach proper running speed, the

centrifugal switch will not close and the automatic gas valve will

not be energized.

IMPORTANT

The use of this manual is specifically intended for a qualified

installation and service agency. All installation and service of

these units must be performed by a qualified installation and

service agency. Modine manuals may contain excerpts from

component supplier literature adapted for Modine products.

Any accompanying component supplier literature is for

general information.

Summary of content (8 pages)

PAGE 1
6-530.13 5H73756A1 (Rev. C) January, 2002 INSTALLATION INSTRUCTIONS DIMENSIONS AND SUBMITTAL DATA power exhaust accessory for gravity vented gas-fired equipment IMPORTANT The use of this manual is specifically intended for a qualified installation and service agency. All installation and service of these units must be performed by a qualified installation and service agency. Modine manuals may contain excerpts from component supplier literature adapted for Modine products.
PAGE 2
INSTALLATION through holes provided in adapter flange, and fasten with two (2) #10 sheet metal screws. The “S” type clip will hold the bottom mounting plate flange to bottom of flue collar. Sheet metal screws may also be used here if desired.(see figure 2.1) For DFG/DBG/DCG/IFG/IBG/ICG, assemble adapter over outlet collar of flue. Drill three (3) 1/8” diameter holes into flue collar through adapter in evenly spaced intervals around adapter. Fasten with three (3) #10 sheetmetal screws.
PAGE 3
INSTALLATION Table 3.1 DFG/DBG/DCG/IFG/IBG/ICG - Allowable Horizontal Vent Pipe Lengths for Modine Power Exhausts Pressure in Unit Location ("W.C.) 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 Model Adapter Part Vent Pipe size No.
PAGE 4
INSTALLATION Dimensional Data – Model PV-124 with 24-Volt Relay Control 5. The National Fuel Gas Code requires at least 6 inches from combustible materials for single wall vent pipe. The minimum distance from combustible materials is based on the combustible material surface not exceeding 160°F. Clearance from the vent pipe (or the top of the unit) may be required to be greater than 6 inches if heat damage other than fire (such as material distortion or discoloration) could result. 6.
PAGE 5
INSTALLATION Additional Requirements for Horizontally Vented Category III Units Figure 5.1 Vertical Venting (pitched roof)➀ Listed Terminal X H Roof Flashing 12 Roof Pitch is X/12 1/4” Use Thimble with Through Ceiling 1’0” Drip Leg with Cleanout Cap Slope 1/4” to the foot 1. Seal all vent joints with a metallic tape or silastic suitable for temperatures up to 350°F. (3M tapes 425, 433 or 363 are acceptable.) Wrap tape two full turns around the vent pipe. 2.
PAGE 6
Specifications — PV-124 Blower - Wheel type, forward curved, statically balanced. Motor Motor type — permanent split capacitor with T.O.L. HP — 1/9 Voltage — 115/208-230/60/1 Amps — 1.6/.8 (Fasco) - 1.7/.87 (Universal) RPM — 3000 Sealed ball bearings 1. Built-in automatic reset, thermal overload protection. 2. Ball bearings permanently lubricated for long life. 3.
PAGE 7
TYPICAL POWER EXHAUST WIRING - DJE/DHE/IJE/IHE Figure 7.1 Typical Power Exhaust Wiring Models DJE/DHE/IJE/IHE 24V Relay CS BU 3 4 BL POWER EXHAUST MOTOR BU 1 R 2 R All components must agree with their respective power source.
PAGE 8
TYPICAL POWER EXHAUST WIRING - DFG, IFG, DBG, IBG, DCG, ICG Figure 8.1 Typical Power Exhaust Wiring Models DFG, IFG, DBG, IBG, DCG, ICG with digit 13=4 CS BL 3 4 POWER EXHAUST MOTOR PE COIL BL 1 R 2 R TO LIMIT TO L2 CONTROL R WIRE TO L1 H T WIRING LEGEND G LINE FACTORY FIELD WIRE NUT LOW Figure 8.