COMBAT® CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

 

 

 

 

 

 

 

10.7 CTUB/C Wiring Diagram (Models 75-115)

 

 

 

 

 

 

 

 

SENSE

BLACK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IGNITION

 

 

 

 

 

 

 

 

 

Time Delay Relay

GREEN/YELLOW

 

 

 

 

 

 

 

 

BROWN

 

 

 

 

 

 

 

 

 

 

 

 

 

BLACK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLUE

 

 

 

 

 

BROWN

BROWN

 

 

 

 

 

 

 

S 4563 C Honeywell

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermostat Limit

CENTRIFUGAL FAN 3

 

 

 

 

 

 

Thermodisc N/C

 

 

 

 

 

 

models 100-115 only

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GREEN/YELLOW

 

 

 

 

 

 

 

 

 

 

 

WHITE N

 

 

 

 

 

 

 

 

 

 

 

HIGH BLACK

 

 

 

 

 

 

 

 

 

 

 

MEDIUM BLUE

 

 

 

 

 

 

 

 

 

 

 

LOW RED

 

 

 

 

 

 

 

 

 

 

 

CENTRIFUGAL FAN 2

 

BROWN

 

 

 

 

 

 

 

 

GREEN/YELLOW

 

 

 

 

 

 

 

 

 

WHITE N

 

 

 

 

 

 

 

 

 

 

 

 

BLUE

 

 

RUN

 

 

 

 

 

HIGH BLACK

 

 

 

 

 

 

 

 

MEDIUM BLUE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PURPLE GREY PINK

 

 

 

 

 

 

LOW RED

 

 

 

 

BLUE

 

 

 

 

 

GREEN/YELLOW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHITE N

BROWN RED

 

FAN

GREEN/YELLOW BLUE BROWN

 

 

FILTERMAINS

 

 

 

 

HIGH BLACK

 

 

 

 

 

 

 

MEDIUM BLUE

 

 

 

 

 

 

 

 

 

 

LOW RED

 

 

 

 

 

 

 

 

 

 

 

CENTRIFUGAL FAN 1

 

 

COMBUSTION

BLACK YELLOW

WHITE

LOCKOUT

 

A

4

5

6

 

 

 

BROWN BLUE

 

 

 

 

 

 

 

 

 

E

 

 

 

 

 

 

 

RELAY

 

 

 

N

 

 

 

B

 

8

9

 

 

 

 

 

 

7

 

 

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLACK

PRESSURE SWITCH

 

 

 

 

 

 

 

 

 

NO\P(3)

YELLOW

 

 

 

 

 

 

 

 

 

 

C \P(1)

WHITE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NC\P(2)

 

 

LOCKOUT

 

 

 

 

 

 

SITE WIRING

Pressure Switch

 

RESET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Detail

 

 

 

N

L

1

2

3 7

8

 

 

 

 

 

 

 

NOTE:

Unused speed setting wires for the centrifugal fan must be isolated and insulated. If any of the original wire supplied with the heater must be replaced, it must be replaced with wiring material having a temperature rating of at least 105° C and 600 volts.

GROUND NEUTRAL LINE REMOTE FAN ON THERMOSTAT

REMOTE LOCKOUT INDICATION REMOTE LOCKOUT RESET

230V 1 Ø

50 Hz

20

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Roberts Gorden CTU 22 TO 115 service manual Run

CTU 22 TO 115 specifications

The Roberts Gordon CTU 22 TO 115 is a renowned unit heater designed to deliver efficient heating solutions in commercial and industrial settings. Known for its advanced features and robust design, this unit heater is ideal for applications where warmth and comfort are essential, such as warehouses, manufacturing facilities, and large retail spaces.

One of the main features of the CTU 22 TO 115 is its powerful heating capacity. With a range of output capabilities, it can effectively heat large areas, ensuring that employees and equipment remain comfortable during cold weather. The heater's output is adjustable, allowing for tailored heating solutions based on specific operational needs.

This model integrates several innovative technologies to enhance efficiency and performance. The use of advanced combustion technology ensures optimal fuel efficiency, which translates to lower energy costs and reduced environmental impact. The heater is available in both gas and oil configurations, providing versatility to accommodate different fuel sources depending on availability and preference.

In addition to its energy efficiency, the Roberts Gordon CTU features a compact design, making it suitable for installations in tight spaces. Its lightweight construction allows for easy installation and relocation, ensuring that businesses can quickly adapt to changing layout requirements. The unit is equipped with high-quality materials and a durable finish, contributing to its longevity and low maintenance needs.

Safety is a paramount concern in any heating system, and the CTU 22 TO 115 doesn't disappoint. It comes with various safety features, including over-temperature protection, ensuring that it operates securely under all conditions. With automatic shutoff capabilities, the heater provides peace of mind to operators, allowing for unattended operation in more remote settings.

Moreover, the CTU’s quiet operation is a significant advantage, as it minimizes disruption in the workplace, ensuring a comfortable environment for personnel. Its design also facilitates easy access to components for maintenance, thus ensuring that the unit remains operational with minimal downtime.

Overall, the Roberts Gordon CTU 22 TO 115 combines performance, efficiency, and safety features to create a reliable heating solution for diverse industrial applications. Its adaptability to various fuel types and efficient design makes it a popular choice among facility managers looking for dependable heating solutions.