PC-104/106 Sprinkler System Controller - Installation Instructions

Oct 22, 2026

Upload by Rowan

Installation instructions for Rain Bird Rain Clock PC-104 and PC-106 sprinkler system controllers, including PC-104-PS and PC-106-PS pump relay variants. Covers selecting an indoor mounting location, removing the timer cover, mounting with screws and optional anchors, and wiring steps. Explains how to choose appropriate 18-gauge sprinkler wiring types, determine cable wire count by valve quantity, make hot and common valve connections, connect the transformer safely, and use the pump start/master valve circuit on PS models.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages13

Reading Time33 min

AccessFree to download

Step 1: Mount the Timer

Location and cover removal

Mounting

Step 2: Connecting the Wiring

Choosing sprinkler wire

Connecting valves

Step 3: Connecting the Transformer

Wire colors and cautions

Step 4: Using the Pump Start Circuit

PS model capability

RAIN CLOCK OWNERS MANUAL SPRINKLER SYSTEM CONTROLLER RAIN CLOCK MODELS PC-104 PC-106 PC-104-PS PC-106-PS 4 Station 6 Station 4 Station with Circuit 6 Station with Circuit Pump Relay Pump Relay Rain Bird Sales, Inc. Customer Support Center 6991 E. Southpoint Rd., Bldg. \#1, Tucson, AZ 85706 Special Upgrade O er Save an extra 15% o new sprinkler timers and irrigation controllers at the Rain Bird Online Store.* Still struggling with your old sprinkler timer? Having a hard time complying with local watering restrictions? Upgrading to a new Rain Bird sprinkler timer is easier than you might think. New timers are easier to program than ever before, with powerful features to help save you time and water while keeping your yard healthy and vibrant. There are lots of models to meet your needs, including indoor and outdoor versions, exible modular timers and even smart controllers that automatically adjust themselves based on the weather. Shop Now at [store.rainbird.com](store.rainbird.com) and enjoy exclusive upgrade savings! Enter discount code: UPGRADE15 at checkout to save an extra 15% o * * Additional discount not valid on clearance items, bundles or store specials. Discount applies to controller products only. Cannot be combined with other store discount codes. Valid at the Rain Bird Online Store only. Subject to change without notice. ® Registered trademark of Rain Bird Corporation. PC-104/106 SPRINKLER SYSTEM CONTROLLER INSTALLATION INSTRUCTIONS Rain Bird Rain Clocks are designed for use with all standard residential 24 volt AC electric valves regardless of brand. However, some older brass electric valves and commercial duty plastic valves may have power requirements higher than this series is designed for STEP 1: MOUNT THE TIMER Location: Select a location inside a building, and within six feet of a grounded electrical outlet. This is not an outdoor timer. Do not mount it where it is exposed to any of natures elements. If it must be outside, be sure to use an outdoor enclosure and a weatherproof electrical connection. Cover Removal: Remove the front cover of the timer by depressing the bottom tab and lifting as shown in Figure 1. Mounting: Mount the timer to a wall using two \#10 screws installed at centers 3 13/ 16" apart at eye level. Use plastic anchors to secure screws if the wall is plastic or masonry. Leave the screw heads extended ¼ " and hang the Rain Clock using the keyhole slots on the back. Install a third screw through the mounting hole (located below the battery area) to secure the timer to the wall. |
OR
FUSE
3/4A 250V 3AG
AS INDICATED
ON THE UNIT

Plug Transformer into 120 volt AC electrical outlet
RED
BLUE
Station Output Terminals
Key Pad
9 Volt Battery
2
3
4
5
6
MV

To Control Valves
| ONLY ON SIX
STATION MODELS
ONLY ON PUMP START MASTER VALVE MODELS
FIGURE 2 | | --- | --- | STEP 2: CONNECTING THE WIRING How to choose the right type of sprinkler wire: Use 18-gauge “bell,” “thermostat” or “underground burial” wire for the sprinkling system. “Bell wire”is available in single strands or twisted in 2 or 3 wire sets and can only be used indoors. “ Thermostat wire,” the most common sprinkling system wire, is typically available with up to 7 wires twisted inside a brown PVC jacket (about ¼” in diameter), and is suitable for most indoor and conduit installations.“Direct Burial” cable is similar to thermostat wire, except the jacket is made of a black Poly UV resistant material, and is suitable for any indoor or outdoor installation, including sunlight exposure. Each individual wire is color-coded. Note: Some areas require by code the use of UL approved cable only. Most Direct Burial Cables have this approval. Most thermostat and bell wires do not. Important: 18 gauge wire or /larger is recommended for sprinkler system wire, allowing cable to be run up to 600’ without proble

FAQs

Where should the Rain Clock controller be installed?

Select a location inside a building within six feet of a grounded electrical outlet. It is not intended for outdoor mounting; use an outdoor enclosure and weatherproof electrical connection if it must be outside.

What sprinkler wire types and gauge are recommended?

Use 18-gauge “bell,” “thermostat,” or “underground burial/direct burial” wire. Bell wire is for indoor use only; direct burial cable is UV-resistant for indoor or outdoor, including sunlight exposure. Use larger than or equal to 18 gauge for reliable operation and long cable runs.

How do you connect valves and prevent wiring mistakes?

Each valve solenoid connects to the timer using two wires: one to the station output terminal (“HOT”) and the other to the timer common terminal (“COMMON”). Only one valve may connect to each station output terminal, and connections should be sealed with a water-tight connector.

Oct 22, 2026

Upload by Rowan