39
Heat exchangers
11, 12, 13: HUBA 604 — FILTER GUARD — TERMINAL 3 LIVE AT INCREASING PRESSURE
— ALARM—CLOGGED FILTER
21, 22, 23: TRAFAG MST 9515 — THERMOSTAT IN COLD AIR — TERMINAL 3 LIVE AT
INCREASING TEMPERATURE — ALARM
31, 32, 33: HUBA 625 — FAN GUARD — TERMINAL 3 LIVE AT INCREASING PRESSURE WHEN
FAN IS RUNNING (OK )— TERMINAL 2 (Nc) LIVE AT NO PRESSURE — ALARM FAN IS
NOT RUNNING
41, 42, 43: SIE SK1—HT—125 — LEAK WATER DETECTOR — “A/Q” TERMINAL LIVE WITH
WATER PRESENT — ALARM (AIR/WATER HEAT EXCHANGER ONLY)
51, 52, 53: MURPHY EL15OK1 — LEAK WATER DETECTOR — “RED” LIVE WITH WATER
PRESENT — ALARM (AIR/WATER HEAT EXCHANGER ONLY)
61, 62, 63: UNIFLOW — WATER FLOW GUARD — “BLACK” TERMINAL LIVE WHEN WATER
FLOW IS OK (AIR/WATER HEAT EXCHANGER ONLY)
71, 72, 73: WEBER 4120.13M — WATER FLOW GUARD — “BLACK” TERMINAL LIVE WHEN
WATER FLOW IS OK (AIR/WATER HEAT EXCHANGER ONLY)
81, 82, 83: INOR RNT8 — TEMPERATURE SENSOR — 3—WIRE PT100
Figure 26 Terminal diagram for heat exchangers. The terminal box of the heat exchanger is shown in figure 24, item 8.
Terminal diagram for heat exchangers
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