GESTRA NRS 1-40, Original Installation Manual

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Node ID
Basic Settings
– continued –
Lowlevel limiter
NRS 140 NRG 1640 (1) NRG 1640 (2) Reserved Reserved
X X + 1 X + 2 X + 3 X + 4
1 2 3 Factory setting
Safety system for steam boilers with superheater
NRS 140.1 NRG 1640 (1) NRG 1640 (2) TRV 540 Limiter 4
X X + 1 X + 2 X + 3 X + 4
1 2 3 4 Factory setting
Safety system (e.g. pressurised hotwater generating unit)
NRS 140.1 NRG 1640 (1) NRG 1640 (2) Limiter 3 Limiter 4
X X + 1 X + 2 X + 3 X + 4
1 2 Factory setting
Safety system (e.g. pressurised hotwater generating unit)
NRS 140.2 TRV 540 (1) TRV 540 (2) Limiter 3 Limiter 4
X X + 1 X + 2 X + 3 X + 4
6 7 8 9 10 Factory setting
TRS 540 (1) TRS 540 (2)
X + 1 + 90 X + 2 + 90
98 98
Highlevel alarm
NRS 141 NRG 1641 Reserved Reserved Reserved
X X + 1 X + 2 X + 3 X + 4
6 7 8 9 10 Factory setting
Further components
SRL 40
X = Sensor (lowlevel limiter / highlevel alarm) + 2 Factory setting
ORT 6
98 Factory setting
Onoff level control
Reserved NRS 142 NRG 1642
X – 1 X X + 1
19 20 21 Factory setting
Modulating level control
URZ 40 NRS 240 NRR 240 NRG 2640 Reserved
X – 2 X – 1 X X + 1 X + 2
38 39 40 41 42 Factory setting
Automatic continuous blowdown control
EF 140 LRR 140 LRG 14... Reserved
X – 1 X X + 1 X + 2
49 50 51 52 Factory setting
Operating unit
URB 1, URB 2
60 Factory setting