LP Models:
Figure 6 - External Regulator With Vent Pointing Down
NG Models:
*Purchase the optional CSA design- certified equipment shutoff valve from your dealer.
**Minimum inlet pressure for purpose of input adjustment.
In the State of Massachusetts the gas cock must be a T handle type. The State of Massachusetts re- quires that a flexible appliance con- nector cannot exceed three feet in length.
Installation must include an equip- ment shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 7).
IMPORTANT: Install equipment shutoff valve in an accessible location. The equipment shutoff valve is for turn- ing on or shutting off the gas to the appliance. Apply pipe joint sealant lightly to male threads. This will pre- vent excess sealant from going into pipe. Excess sealant in pipe could re- sult in clogged heater valves.
We recommend that you install a sedi- ment trap in supply line as shown in Figure 7. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed incorrectly, heater may not run properly.
CHECKING GAS
CONNECTIONS
WARNING: Test all gas piping and connections for leaks after install- ing or servicing. Correct all leaks at once.
WARNING: Never use an open flame to check for a leak. Apply a mix- ture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.
CAUTION: Make sure external regulator has been installed between gas supply and heater. See guidelines under Connecting to Gas Supply.
Figure 8 - Equipment Shutoff Valve
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG(3.5kPa)
1.Disconnect heater with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 PSIG will damage heater regulator.
2.Cap off open end of gas pipe where equipment shutoff valve was connected.
3.Pressurize supply piping system by either using compressed air or open- ing gas supply tank valve.
4.Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.
5.Correct all leaks at once.
6.Reconnect heater and equipment shutoff valve to gas supply. Check re- connected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG(3.5 kPa)
1.Close equipment shutoff valve (see Figure 8).
2.Pressurize supply piping system by either using compressed air or open- ing natural supply tank valve.
3.Check all joints from gas meter to equipment shutoff valve (see Figure 9). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.
4.Correct all leaks at once.
Pressure Testing Heater
Gas Connections
1. Open equipment shutoff valve (see Figure 8).
2. Open gas supply tank valve.
3. Make sure control knob of heater is in the OFF position.
4. Check all joints from equipment shutoff valve to control valve (see Fig- ure 9). Apply mixture of liquid soap
Figure 7 - Gas Connectionand water to gas joints. Bubbles forming show a leak.
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