INSTALLATION AND OPERATION INSTRUCTIONS
3-6
TANKLESS WATER HEATER 199
INSTALLATION AND OPERATION INSTRUCTIONS
3-6
TANKLESS WATER HEATER 199
REASSEMBLY
1.
Replace the heat exchanger gasket. Inspect, and when needed change
other gaskets. If necessary, inspect and clean the gasket mating surface.
2.
Place the heat exchanger cover onto the heat exchanger and loosely install
the 6mm Allen bolts and lock washers removed in step 6. Tighten the 6mm
Allen bolts in a cross pattern as shown in
the
Figure 36
.
3.
Connect the gas line to the gas valve ensuring the O-ring is in place. Tighten
the gas valve nut. Ensure the upper gas valve connection is tight. Re-connect
the gas valve electrical connection.
4.
Re-connect the electrical connection to the fan.
5.
Inspect the condensate trap for debris. Remove and clean if necessary. Fill
the condensate trap with water.
6.
Turn on the gas supply valve to the unit and inspect for gas leaks. Use an
approved leak detection solution. Soap test all joints.
7.
Ensure the unit is full of water and purged of air if the unit was drained during
disassembly.
8.
Turn on the power to the unit and create a call for domestic hot water.
9.
Inspect the gasket around the unit cover.
10.
Check flue gases for proper combustion.
See Section 3.3 Commissioning
for
proper adjustments.
11.
Re-install the unit’s cover and set the unit into normal operation.
Figure 36: Tighten hex bolts in
cross pattern direction.