Desa 125-RN ユーザーズマニュアル

www.desatech.com

114248-01B

GAS SUPPLY

PROPANE/LP GAS MODEL 125-R ONLY

Propane gas and propane tank(s) are to be fur-

nished by the user.
Use this heater only with a propane vapor

withdrawal supply system. See Chapter 5 of the

Standard for Storage and Handling of Liqueﬁed

Petroleum Gas, ANSI/NFPA 58 and/or CAN/CGA

B149.2. Your local library or ﬁre department will

have this booklet.
The amount of propane gas ready for use from

propane tanks varies. Two factors decide this

amount.
1. The amount of liquid propane gas in tank(s)
2. The temperature of tank(s)
The chart below shows the minimum number of 45

kg (100 lb) tanks needed to run the heater. Connect

tanks together with a manifold.

Average Temperature

Number Of Tanks

°C (°F) At Tank Location

45 kg (100 lb)

4° (40°) to 0° (32°)

Below 0° (32°)

Less gas is vaporized at lower temperatures. Your

local propane gas dealer will help you select the

proper supply system.

NATURAL GAS MODEL 125-RN ONLY

The user must furnish the natural gas supply and

the connections to the heater.
Regulate the natural gas supply down from a mini-

mum 7" w.c. to a maximum of 1/2 psi. The natural

gas supply capacity should be able to supply a

minimum of 125 cubic feet of gas at pressure for

each heater connected to the system.
Consult your natural gas supplier for proper sizing

of the natural gas supply lines.
Follow all local ordinances and codes. In the ab-

sence of local ordinances and codes, refer to the

National Fuel Gas Code Handbook, NFPA54/ANSI

Z223.1 and the Natural Gas Installation Code, CAN/

CGA B149.1

VENTILATION

WARNING: Provide at least

a .35 m

(3.75 ft

) opening of

fresh, outside air while running

heater. If proper fresh, outside

air ventilation is not provided,

carbon monoxide poisoning

can occur. Provide proper fresh,

outside air ventilation before

running heater.

INSTALLATION

INSTRUCTIONS

Read these instructions care-

fully. Read and adhere to these

instructions. Do not allow any-

one who has not read these

instructions to assemble, light,

adjust or operate this heater.

Do not attempt to operate the

heater with any gas other than

that indicated on the heater

nameplate.

For the U.S. and/or Canada, the installation of this

appliance must comply with local and/or Provin-

cial codes or, in the absence of these codes, with

the (U.S.) National Fuel Gas Code, ANSI Z223.1

– Latest Edition (for natural and propane/LP gas

operation) and with the (U.S) Standard for the

Storage and Handling of Liqueﬁed Petroleum

Gases, ANSI/NFPA 58 (for propane/LP gas opera

tion) or with the current (Canadian) CAN/CGA

B149.1 and B149.2 installation codes.
This heater (including hose and regulator assembly

if applicable) must be inspected before each use

and at least annually by a qualiﬁed service person.

If the hose for model 125-R shows evidence of

excessive abrasion or wear or if the hose is cut, it

must be replaced prior to the heater being put into

operation. The replacement hose assembly shall be

that speciﬁed by the manufacturer.