Installation – Desa VRL30PR User Manual

Page 16

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110021-01M

16

INSTALLATION

Continued

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping

and connections, internal and

external to unit, for leaks after

installing or servicing. Correct

all leaks at once.

WARNING: Never use an

open flame to check for a leak.

Apply a commercial leak de-

tection solution to all joints.

Bubbles forming show a leak.

Correct all leaks at once.

CAUTION: For propane/LP

units, make sure external regula-

tor has been installed between

propane/LP supply and heater.

See guidelines under Connecting

to Gas Supply, page 13.

PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect appliance with its appliance main

gas valve (control valve) and equipment shutoff

valve from gas supply piping. Pressures in ex-

cess of 1/2 psig will damage heater regulator.

2. Cap off open end of gas pipe where equipment

shutoff valve was connected.

3. Pressurize supply piping system by either

opening propane/LP supply tank valve for

propane/LP gas or opening main gas valve

located on or near gas meter for natural gas

or using compressed air.

4. Check all joints of gas supply piping system.

Apply a commercial leak detection solution

to all joints. Bubbles forming show a leak.

5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff valve

to gas supply. Check reconnected fittings for

leaks.

* Purchase the optional CSA design-certified

equipment shutoff valve from your dealer. See

Accessories, page 41.
** Minimum inlet pressure for purpose of input

adjustment.

Figure 15 - Gas Connection (Remote-

Ready Models Only)

Gas Control Valve

Tee Pipe Cap
Joint Nipple

3" Minimum

Sediment Trap

PROPANE/LP

From

External Regulator
(11" W.C.** to
14" W.C. Pressure)

NATURAL

From Gas

Meter (5" W.C.**
to 10.5" W.C.
Pressure)

CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*

Approved
Flexible Gas
Hose (if allowed
by local codes)

Figure 14 - Gas Connection

Cap Pipe Tee
Nipple Joint

3" Min.

Sediment Trap

Gas
Regulator

CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*

Approved Flexible Gas
Hose (if allowed by
local codes)

Natural From Gas

Meter (5" W.C.**

to 10.5" W.C.

Pressure)

Propane/LP

From External

Regulator

(11" W.C.**

to 14" W.C.

Pressure

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