Raypak WH 0195A User Manual download pdf (Page 11)

(g) Any improper operation of the common venting

system should be corrected so the installation

conforms with the latest edition of the National

Fuel Gas Code, ANSI Z223.1. When re-sizing any

portion of the common venting system, the com-

mon venting system should be re-sized to

approach the minimum size as determined using

the appropriate tables in Chapter 10 and in

Appendix G of the National Fuel Gas Code, ANSI

Z223.1 and CAN/CSA-B149.

Gas Supply Connections

The inlet gas connection to the heater gas valve is

1/2". Provide an adequate gas supply line according to

Table F below.

Gas piping must have a sediment trap ahead of the

heater gas controls, and a manual shut-off valve locat-

ed outside the heater jacket. All gas piping should be

tested after installation in accordance with local codes.

Fig. 6: Sediment Trap

SUPPLIED BY

INSTALLER

Model No.

1/2 in. 3/4 in. 1 in. 1-1/4 in.

Nat Pro Nat Pro Nat Pro Nat Pro

0090 30 80 125 300 400 560

0135 15 40 60 150 150 200

0195 20 35 70 100 100 400

Natural gas, 1000 BTUH/ft .60 specific gravity @ 0.5 in. WC pressure drop.

Propane gas, 2500 BTUH/ft 1.53 specific gravity @ 0.6 in. WC pressure drop.

Table F: Maximum Equivalent Pipe Length (ft)

CAUTION: The heater and its manual shut off

valve must be disconnected from the gas supply

during any pressure testing of that system at test

pressures in excess of 1/2 psi (3.45 kPa). Dissipate

test pressure in the gas supply line before

reconnecting the heater and its manual shut off valve

to gas supply line. FAILURE TO FOLLOW THIS

PROCEDURE MAY DAMAGE THE GAS VALVE.

OVER PRESSURED GAS VALVES ARE NOT

COVERED BY WARRANTY. The heater and its gas

connections shall be leak tested before placing the

appliance in operation. Use soapy water for leak test

DO NOT use open flame.

NOTE: Do not use teflon tape on gas line pipe

thread. A flexible sealant suitable for use with Natural

and Propane gases is recommended.

NOTE: These heaters are also certified to operate

on Propane gas, when equipped with the

combination gas valve and orifices (pilot and main

burners) sized for Propane gas.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 27 28

Comments to this Manuals

No comments

Raypak WH 0195A User Manual Page 11

Comments to this Manuals

Related products and manuals for Water heaters & boilers Raypak WH 0195A