Vanguard FBST Manual

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105116-01D12

If a sediment trap is not incorporated as a part of

the gas utilization equipment, one shall be installed

as close to the inlet of the equipment as practical at

the time of installation, as per ANS Z223.1/NFPA

54. See Figure 14.

Prepare incoming black iron gas line with Teon

tape or pipe joint compound (check with local

codes as to the use of Teon tape). Compounds

used on threaded joints of gas piping shall be

resistant to the action of propane/LP and should

be applied lightly to ensure excess sealant does

not enter the gas line.

Complete your gas installation by connecting

the incoming gas line to the appliance regulator.

Secure all joints tightly with wrench but do not

overtighten. If a exible gas line is used, take care

not to kink the connector.

WARNING: All gas piping

andconnectionsmustbetested

forleaksaftertheinstallationis

completed.Afterensuringthat

themanualshutoffgasvalveis

open, apply a soap and water

solution to all connections and

joints.Ifbubblesappear,leaks

can be detected and corrected.

DO NOT USE OPEN FLAME FOR

LEAK TESTING AND DONOT

OPERATE ANY APPLIANCE IF

ALEAKISDETECTED.

INSTALLATION

Continued

Figure 14 - Sediment Trap Installation

Incoming 1/2"

Gas Line

Permitted by

Local Codes

Sediment Trap

(Not Supplied)

GAS SUPPLY TESTING

Note: This section is intended as a guide for

qualied technicians installing gas to this vent-

free rebox.

CAUTION: Do not connect

vent-free heater before pressure

testinggaspiping.Damageto

gasvalvemayresultandanun-

safeconditionmaybecaused.

The appliance and its’ individual shutoff valve

must be disconnected from the gas supply piping

system during any pressure testing of that system at

test pressures in excess of 1/2 psig (3.5 kPa).

The appliance must be isolated from the gas

supply piping system by closing manual shutoff

valve during any pressure testing of the gas sup-

ply piping system at test pressures equal to or

less than 1/2 psig (3.5 kPa).

HARD-WIRING FIREBOX

Model FBST can be hard-wired to the duplex

outlet located inside the rebox bottom if desired.

This allows the blower accessory to be plugged

into the duplex outlet.

NOTICE:Aqualiedelectrician

mustconnectelectricalwiringto

duplex outlet for built-in instal-

lation. Follow all local codes.

In absence of local codes fol-

low The National Electric Code

ANS/NFPA 70.

ELECTRICAL INSTALLATION

A model GA3500A blower system assembly is

available for use with the FBST vent-free rebox

as an optional accessory. This blower is designed

to be installed on either side of the FBST rebox,

when provisions for a 120 VAC supply connection

are made at either end of the cabinet. Use of a

blower system other than those manufactured by

DESA voids the warranty.

Electrical connections are made within the recep-

tacle with wires that are routed through the bushing

provided (see Figure 15, page 13). The receptacle

may be relocated to either side, when necessary.

However, the cover plate must be replaced over the

unused access point. Be certain to properly ground

the vent-free rebox using the green grounding

wire (see Figure 17 on page 14).