Install Instructions

Mascot ST Tankless Water Heater
Page 25
Gas Supply Piping
Chapter 4. – Connecting Appliance
4.9 Gas Supply and Piping (continued)
Water Heater MUST be installed downstream of the gas meter for adequate gas supply.
Natural Gas piping installation.
Propane gas piping installation.
recommended to be
the first appliance to
gas supply line.
Connection
1/2"~3/4" Gas pipe size
Manual gas shut off valve
Gas meter
G
Capacity : not less than 'total capacity of connected appliances'
Other appliance
Sediment Trap
The Water Heater is
be connected to the
Full size gas pipe
LP GAS TANK
shut off valve
Gas Regulator (2 psi)
Gas Regulator (supply press 12")
1/2" pipe
Sediment Trap
Other appliance
Manual
Union
Union