Desa RGA 2-72 用户手册
115043-01
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INSTALLATION
Continued
CONNECTING TO GAS SUPPLY
WARNING: A qualifi ed service person must con-
nect log set to gas supply. Follow all local codes.
Installation Items Needed
Before installing log set, make sure you have the items listed
below.
below.
• piping (check local codes)
• sealant (resistant to Propane/LP gas)
• equipment shutoff valve
• test gauge connection
• adjustable (crescent) wrench or pliers
• sediment
trap
• tee
joint
• pipe
wrench
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in certain
areas. Check your local codes. Use pipe of 1/2" diameter
or greater to allow proper gas volume to log set. If pipe
is too small, undue loss of volume will occur.
areas. Check your local codes. Use pipe of 1/2" diameter
or greater to allow proper gas volume to log set. If pipe
is too small, undue loss of volume will occur.
We recommend that you install a sediment trap in supply line as
shown in Figure 4. Locate sediment trap where it is within reach for
cleaning. Install in piping system between fuel supply and heater.
Locate sediment trap where trapped matter is not likely to freeze.
A sediment trap traps moisture and contaminants. This keeps them
from going into log set controls. If sediment trap is not installed or
is installed wrong, log set may not run properly.
shown in Figure 4. Locate sediment trap where it is within reach for
cleaning. Install in piping system between fuel supply and heater.
Locate sediment trap where trapped matter is not likely to freeze.
A sediment trap traps moisture and contaminants. This keeps them
from going into log set controls. If sediment trap is not installed or
is installed wrong, log set may not run properly.
Installation must include a 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 log set (see Figure 4).
plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from log set (see Figure 4).
IMPORTANT: Install equipment shutoff valve in an accessible
location. The equipment shutoff valve is for turning on or shutting
off the gas to the appliance.
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 going into pipe. Excess sealant in pipe
could result in a clogged burner injector.
prevent excess sealant from going into pipe. Excess sealant in pipe
could result in a clogged burner injector.
WARNING: Use pipe joint sealant that is resistant to liquid
petroleum (LP) gas.
Figure 4 - Gas Connection
* Purchase the optional CSA design-certifi ed equipment shutoff
valve from your dealer. See Accessories, page 15.
** Minimum inlet pressure for purpose of input adjustment.
valve from your dealer. See Accessories, page 15.
** Minimum inlet pressure for purpose of input adjustment.
3" Minimum
Sediment Trap
From Gas Meter
(5" W.C.** to 10.5"
W.C. Pressure)
(5" W.C.** to 10.5"
W.C. Pressure)
CSA Design-Certifi ed
Equipment Shutoff Valve
With 1/8" NPT Tap*
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved Flexible Gas Hose
(if allowed by local codes)
(if allowed by local codes)
Tee Joint
Pipe Nipple
Cap
INSTALLATION
Connecting to Gas Supply
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.
or servicing. Correct all leaks at once.
WARNING: Never use an open fl ame to check
for a leak. Apply a noncorrosive leak detection fl uid
to all joints. Bubbles forming show a leak. Correct
all leaks at once.
to all joints. Bubbles forming show a leak. Correct
all leaks at once.
CHECKING GAS CONNECTIONS
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect log set and its individual equipment shutoff valve
from gas supply piping system.
2. Cap off open end of gas pipe where equipment shutoff valve
was connected.
3. Pressurize supply piping system by either using compressed
air or opening main gas valve located on or near gas meter.
4. Check all joints of gas supply piping system. Apply noncorrosive
leak detection fl uid to gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect log set and equipment shutoff valve to gas supply.
Check reconnected fi ttings for leaks.