Thermann TH32END5L, Руководство по установке

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Thermann Installer’s Manual
Gas Continuous Flow Water Heaters
12
Follow the instructions from the gas supplier.
Gas Type
The gas type indicated on the Water Heater’s rating
plate (NG or ULPG) must match the type of gas
being supplied to the Water Heater.
Pressure Test
The appliance and its gas connections must be leak
tested before placing the appliance in operation.
If test pressures are in excess of 1/2 psi (3.5 kPa),
the appliance must be completely disconnected
from the gas supply piping system during the test
process.
Measuring Gas Pressure
SEE DOCUMENT IN PLASTIC SLEEVE BEHIND
FRONT COVER FOR PRESSURE ADJUSTMENTS
• In order to check the gas supply pressure to the
Water Heater, a tap is provided on the gas inlet.
1. Remove the hex head phillips
screw from the tap.
2. Connect a manometer using a
silicon tube.
• In order to check the gas manifold pressure
on the gas valve inside the Water Heater. The
pressure can be checked by removing the hex
head phillips screw and connecting a manometer
with a silicon tube.
Gas Meter
Select a gas meter capable of supplying the entire
MJ/h demand of all gas appliances in the building.
Gas Connection
1. Fit a union to the Water Heater gas inlet for easy
connection and removal. The thread diameter is
20 mm.
2. Fit an suitably approved isolating gas cock in the
supply pipe adjacent to the Water Heater gas
connection.
3. Ensure that the supply pipe and the gas pressure
regulator (ULPG or Natural Gas) has sufficient
flow capacity for this and other appliances
connected to the fitting pipe.
4. For ULPG appliances ensure that gas cylinders
are of sufficient size. The Water Heater alone
will require 2 × 45 Kg capacity cylinders.
5. Before connecting the appliance to the gas
service, purge any debris or air from the gas
service.
6. Check all joints for leaks with an approved leak
tester after connection.
NOTE THIS DOES NOT INDICATE THE SIZE
OF THE GAS SUPPLY.
Pressure
Ensure measurement is taken when the appliance is
operating at maximum load.
The inlet gas pressure must be within the range
specified.
This is for the purposes of input adjustment.
WARNING
Pipe Sizing
• In order to choose the proper size for the gas
pipe, consult local codes and/or the AS/NZS 5601.
• Size the gas pipe according to total MJ/h demand
of the building and length from the meter or
regulator so that the following supply pressures
are available even at maximum demand refer AS/
NZS 5601:
Supply Pressure
Natural Gas ULPG Gas
Min 1.13 kPa 2.75 kPa
Max 3.00 kPa 3.50 kPa
Gas pressures below the required minimum
pressure may result in ignition failure, personal
injury or death.
WARNING
6. Connecting the Gas Supply