Si (Metric) Conversion Factors; Before You Begin - Modine Manufacturing PTC Installation And Service Manual

Ptc/btc series high efficiency, separated combustion gas-fired unit heaters

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Installation instructions (2 pages)

Manual (224 pages)

Table of Contents

sPeCIAl PreCAuTIons / sI (meTrIC) ConversIon fACTors

CAUTION

12. The minimum distance from combustible material is based

on the combustible material surface not exceeding 160°F.

Clearance from the top of the unit may be required to be

greater then the minimum specified if heat damage, other

than fire, may occur to materials above the unit heater at

the temperature described.

13. Allow 18" of clearance at rear (or 12" beyond end of

motor at rear of unit, whichever is greater) and access

side to provide ample air for proper operation of fan.

14. The concentric vent adapter box must be installed inside

of the structure or building. Do not install this box on the

exterior of a building or structure.

15. Purging of air from gas supply line should be performed

as described in the National Fuel Gas Code, ANSI Z223.1

(NFPA 54) - latest edition, or in Canada in CSA-B149

codes.

16. When leak testing the gas supply piping system, the

appliance and its combination gas control must be

isolated during any pressure testing in excess of 14" W.C.

(1/2 psi).

17. The unit should be isolated from the gas supply piping

system by closing its field installed manual shut-off valve.

This manual shut-off valve should be located within 6' of

the heater.

18. Turn off all gas before installing appliance.

19. Check the gas inlet pressure at the unit upstream of the

combination gas control. The inlet pressure should be

6-7" W.C. on natural gas or 12-14" W.C. on propane. If

inlet pressure is too high, install an additional pressure

regulator upstream of the combination gas control.

20. Service or repair of this equipment must be performed by

a qualified service agency.

21. Do not attempt to reuse any mechanical or electronic

ignition controller which has been wet. Replace defective

controller.

ImpORTANT

1. To prevent premature heat exchanger failure, do not locate

ANY gas-fired appliances in areas where corrosive vapors

(i.e. chlorinated, halogenated, or acidic) are present in the

atmosphere.

2. To prevent premature heat exchanger failure, the input to

the appliance as indicated on the serial plate, must not

exceed the rated input by more than 5%. Verify that the

blower has been set to the proper RPM for the

application. Refer to page 19 for blower adjustments.

3. Start-up and adjustment procedures must be performed

by a qualified service agency.

Before You BegIn

1. All literature shipped with this unit should be kept for future

use for servicing or service diagnostics. Leave manual with

the owner. Do not discard any literature shipped with this unit.

2. Consult piping, electrical, and venting instructions in this

manual before final installation.

3. Do not attach ductwork, air filters, or polytubes to any

propeller unit heater.

In the U.S., the installation of these units must comply with the

the National Fuel Gas Code, ANSI Z223.1 (NFPA 54) - latest

edition, or in other applicable local building codes. In Canada,

the installation of these units must comply with local plumbing

or waste water codes and other applicable codes and with the

current code CSA-B149.1.

1. All installation and service of these units must be

performed by a qualified installation and service agency

only as defined in ANSI Z223.1 (NFPA 54) - latest edition or

in Canada by a licensed gas fitter.

2. This unit is certified with the controls furnished. For

replacements parts, please order according to the

replacement parts list on serial plate. Always know your

model and serial numbers. Modine reserves the right to

substitute other authorized controls as replacements.

3. Unit is balanced for correct performance. Do not alter fan

or operate motors at speeds below what is shown in this

manual.

4. Information on controls is supplied separately.