Raypak HI DALTA HD101 User Manual download pdf (Page 17)

Gas Supply Connection

CAUTION: The heater and its manual shutoff valve

must be disconnected from the gas supply during

any pressure testing of the gas supply system at test

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

must be isolated from the gas supply piping system

by closing the manual shutoff valve during any

pressure testing of the gas supply piping system at

test pressures equal to or less than 1/2 psi. Relieve

test pressure in the gas supply line before

reconnecting the heater and its manual shut off valve

to the gas supply line. FAILURE TO FOLLOW THIS

PROCEDURE MAY DAMAGE THE GAS VALVES.

Over pressurized 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.

Gas Supply

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. A pounds to inches

regulator must be installed to reduce the natural gas

supply pressure to under 10.5 in. WC (13.0 in. WC for

propane gas). The regulator should be placed a mini-

mum distance of 10 times the pipe diameter upstream

of the heater gas controls. All gas piping must be test-

ed after installation in accordance with local codes.

The heater and its gas connection must be leak-tested

before placing it in operation.

DANGER: Make sure the gas on which the heater

will operate is the same type as specified on the

heater’s rating plate.

Fig. 12: Single Heater — Domestic Hot Water with One Storage Tank

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 47 48

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Raypak HI DALTA HD101 User Manual Page 17