Remotec ZTS-110 V3.12 User Manual download pdf (Page 8)

Wiring

- Be sure the operation mode is OFF

and Fan selection is Fan Auto

- Wire the proper cables at the terminal

block according to the circuit diagram

- Afterward, push all cables back into

the wall

- Do not use metal conduit or of cable

provided with a metal sheath

- Recommends adding fuse or

protective device in the line circuit

Important!

If you will be powering the ZTS-110 with 24Vac:

Connect the "24Vac Common" (typically the black wire/terminal) and "24Vac

Power" (typically the Red wire/terminal) from the HVAC system to the ZTS-110

HVAC System terminal block "C" and "RH" or "RC" terminals (see the following

explanation, these may be jumpered together).

Common or Split Transformer Systems:

Most HVAC systems have a common heating and cooling transformer. You must

insert a jumper wire to tie the RH and RC inputs together for this configuration. If

you have a system with separate heating and cooling transformers, do not insert a

jumper wire between RC and RH.

When wiring split systems, wire the heating systems "24Vac Power" (red wire) to

the ZTS-110 "RH" terminal, and wire the cooling systems "24Vac Power" to the

ZTS-110 "RC" terminal. Also wire the cooling systems "24Vac Common" to the

ZTS-110 "C" terminals.

Note: Do not split RC/RH for Heat Pump systems!

Figure 4. Non-heat pump (Standard Gas or Electric) HVAC system wiring

Terminals

Cool changeover (heat pump)

Heat changeover (heat pump)

2nd Stage heater

1st Stage heater

Fan

Compressor

24Vac Common

24Vac Power for Cooling

24Vac Power for Heating

Symbol

Standard HVAC System

W2 - 2 stage heater

W1 - 1 stage heater

G - Fan

Y - Compressor

R - 24Vac Power

C - 24Vac Common

Brown

White

Green

Yellow

Red

Black

ELECTH

HPUMP

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Remotec ZTS-110 V3.12 User Manual Page 8

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