Uživatelská Příručka Desa Plynový Ohřívač 10542 [12/32 Stránek]

Desa plynový ohřívač 10542

www.desatech.com 113680-01A

CONNECTING TO GAS SUPPLY

WARNING: This appliance

requires a 3/8" NPT (National

Pipe Thread) inlet connection to

the pressure regulator.

WARNING: A qualified ser-

vice person must connect heater

to gas supply. Follow all local

codes.

WARNING: For natural gas,

never connect heater to private

(non-utility) gas wells. This gas is

commonly known as wellhead gas.

IMPORTANT:

For natural gas, check gas line

pressure before connecting heater to gas line. Gas

line pressure must be no greater than 10.5 inches

of water. If gas line pressure is higher, heater regu-

lator damage could occur.

CAUTION: For propane/LP

gas, never connect heater directly

to the propane/LP supply. This

heater requires an external regu-

lator (not supplied). Install the ex-

ternal regulator between the

heater and propane/LP supply.

INSTALLATION

Continued

Figure 14 - External Regulator With Vent

Pointing Down

External Regulator

Propane/LP

Supply Tank

Vent

Pointing

Down

For propane/LP gas, the installer must supply an

external regulator. The external regulator will re-

duce incoming gas pressure. You must reduce in-

coming gas pressure to between 11 and 14 inches

of water. If you do not reduce incoming gas pres-

sure, heater regulator damage could occur. Install

the external regulator with the vent pointing down

as shown in Figure 14. Pointing the vent down

protects it from freezing rain or sleet.

CAUTION: Use only new,

black iron or steel pipe. Inter-

nally-tinned copper tubing may

be used in certain areas. Check

your local codes. Use pipe of

large enough diameter to allow

proper gas volume to heater. If

pipe is too small, undue loss of

volume will occur.

Typical Inlet Pipe Diameters

10,000/20,000 Btu/Hr Models - 3/8" or greater

30,000 Btu/Hr Models - 1/2" or greater

Installation must include equipment shutoff valve,

union, and plugged 1/8" NPT tap. Locate NPT tap

within reach for test gauge hook up. NPT tap must

be upstream from heater (see Figure 15, page 13).

IMPORTANT:

Install an equipment shutoff valve

in an accessible location. The equipment shutoff

valve is for turning on or shutting off the gas to

the appliance.

Apply pipe joint sealant lightly to male NPT

threads. This will prevent excess sealant from go-

ing into pipe. Excess sealant in pipe could result

in clogged heater valves.

3. For carpeted floors, make a small cut with a

sharp knife at marked locations prior to drill-

ing. If mounting base to a wood floor, drill 1/8

inch diameter hole, 3/4 inch deep. (Do not use

anchors in wood floors).

If mounting base to a concrete floor, drill with

1/4 inch diameter concrete drill bit, 1

/8 inches

into floor. Insert anchors completely into holes.

4. Reposition heater with base feet over holes.

Secure base to floor with wood screws. See

Figure 13, page 11.

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