Carrier 38ZS/ZF Installation, Operation And Maintenance Instructions page 11

7 - CHECKING BEFORE COMMISSIONING
Connection chart with electronic control CARRIERrtc Basic / CARRIERrtc Medium
pGD1 maintenance terminal (opt.)
Main failure signal (opt.)
No
1 Power supply
2
TCO user terminal connection
4 Indoor fan power supply
5 Thermal relay signal of the indoor fan
6 Outlet temperature probe
7
Return or ambient temperature probe (optional)
11 Clogged fi lters detector (optional)
12 Air fl ow control (optional)
13 Unit without neutral (std) and/or soft starter (opt.)
14 HWC 24 Vac signal (optional)
15 HWC valve (optional)
16
Electrical heaters (optional)
17 Safety thermistors of electrical heaters (optional)
21
Mixing temperature probe (optional)
22
Mixing box servomotors power supply (optional)
23
Return fan power supply (optional)
24
Thermal relay signal of the return fan (optional)
31 pGD1 maintenace terminal connection (optional)
32 Remote on/off (optional)
33 Main failure signal (optional)

 If the unit is going to be installed in an industrial environment with a high level of electromagnetic interference, it is recommended to shield the cables
of the thermostat control.
  In indoor units with the optional mixing box, these connections are realized directly between the outdoor unit and the terminal board of the box mentioned
  The power supply for the electrical heater must be protected by an automatic switch and/or fuses to be foreseen by the installer.
Outdoor unit 38ZS/ZF
Power supply 1
TCO user terminal 2
31
Remote on/off (opt.) 32
33
38ZS/ZF
400 III (±10%)







4 Indoor fan power supply
5
Indoor fan thermal protection
6
Supply T probe
7
Return or ambient T probe (opt.)
11 Clogged filter detector (opt.)
12
Air flow control (opt.)
13
Without neutral (std) and/or starter(opt.)
14
HWC 24Vac signal (opt.)
15
HWC valve (opt.)
16
Electrical heaters (opt.)
17
Electrical heaters safety (opt.)
7
Return or ambient T probe (opt.)
21
Mixing T probe (opt.)
22
Mixing box servomotors (opt.)
23
Return fan power supply (opt.)
24
Return fan thermal protection (opt.)
90 100 120 160 180 182 200 240 320 360 420 485 540 600
2 wires for power supply 230V + 1 shielded cable for communication type AGW20 / 22
(1 braided pair + drainwire + shielding)
3 wires (per stage) + GND
telephone cable 6 wires standard (RJ12 connector)
Expansion Mixing
exchager device box
(connected on-site) (optional)
3 + GND
3 + GND
2 wires
2 wires
2 wires
2 wires
2 wires
1 wire
2 wires
1 wire
2 wires
2 wires
3 wires
3 + GND
2 wires
2 wires
2 wires
11