Installation / Operation Instruction Manual

Installation instructions

RTG-K-199/160N/X1 – 6 720 817 984 (2022/06)

Fig. 34 Hydro air system with water heater

[1] Hot water outlet

[2] Cold water inlet

[3] Pressure relief valve

[4] Gas supply

[5] Shut off gas valve (field supplied)

[6] Thermal expansion tank (as required)

[7] Air purge (field supplied)

[8] Cold water supply

[9] Check valve (field supplied)

[10] Thermostatic mixing valve (field supplied)

[11] Thermometer (field supplied)

[12] DHW outlet

[13] Thermostat (field supplied)

[14] Air handler

[15] Check valve (field supplied)

[16] Shutoff valve (field supplied)

[17] Circulation pump (only required if air handler doesn’t

includes internal pump) (field supplied)

[18] Relay (only required if air handler doesn’t includes

internal pump) (field supplied)