Step 1 · Questions to ask
- Natural gas or propane?
- What is the space like for mounting?
- Routing for intake and exhaust?
- Recirculating pump? Internal or external?
- Is the gas line sized appropriately for a tankless water heater?
- Where is the condensate getting run to? Do we need an acid neutralizer to pump it, or run it into a cast iron or galvanized drain line?
- Is there space to run the intake inside?
Step 2 · Parts and tools list
- The correct tankless heater
- Tankless heater valve kit
- Pipe for condensate, 1/2" CPVC
- Gas flex hose
- Gas valve
- Acid neutralizer
- Condensate pump
- PVC for intake and exhaust, plus PVC fittings
- Spray foam for the wall penetrations
CPVC fittings
- 90s, street or regular
- 45s, street or regular
- Couplings
- 1/2" plastic threaded adapter to connect to the condensate connection on the unit
Black iron fittings (1/2" or 3/4")
- 3" nipples (x2)
- 5" nipple
- Cap for the drip leg
- Coupling
- Tee
- 90 to connect to the heater
Step 3 · Suggestions
- Make sure to change the orifice and set the dip switches properly for the fuel type.
- Allow the customer to feel the temperature of the water before leaving the job.
- Recommend us coming back in 1 year to check on how the system is performing and to do an annual flushing.