Installation instructions
RTG 199 HE – 6 720 811 617 (2016/01)
32
Fig. 44 Pressure drop curve
Fig. 45 Space heating diagram
[1]
Hot water outlet
[2]
Cold water inlet
[3]
Pressure relief valve
[4]
Gas supply
[5]
Shut off gas valve
[6]
Thermal expansion tank (as required)
[7]
Atmospheric vacuum breaker
[8]
Cold inlet
[9]
Check valve
[10] Pump
[11] Thermostatic mixing valve
[12] Thermometer (optional)
[13] DHW outlet
[14] Water to water heat exchanger
[17] Thermostat
[18] Space heating zone
[19] Zone controller
[20] Space heating pump
[21] Expansion tank
[22] Pressure relief valve
