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CTM HOTflow® Engine Heater

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Pump Driven Heaters

An efficient forced circulation system that allows for a variety of small engine applications.

Despite its small footprint, efficient forced circulation allows the HOTflow® CTM system to heat engines up to 20 liters in displacement, allowing for a wide variety of weather-protected small engine applications. Multiple options are available, including UL/C-US listed and CE-compliant models.

The CTM’s inlet and outlet may be reoriented at 90° increments to accommodate heater plumbing. The included mounting kit is ideal for most installations; an optional vibration isolation kit is also available. Forced circulation provides uniform heat throughout the engine, reducing component maintenance and offering significant energy savings - resulting in end-user utility cost reductions up to 35%*.

*Savings are dependent on local utility rates and installation variables.

Not intended for hazardous locations.

Heating Information

Primary Heating

Water
Coolant Mix

Primary Heat Power

1 kW
1.5 kW
2.5 kW

Power Specifications

Power Sources

AC, Single-Phase, 60 Hz
AC, Single-Phase, 50 Hz

Voltages

120
240

Power Connectors

NEMA Plug
Euro Plug (Schuko)
Hardwired

Temperature Control

Primary Temperature Control

100–120 °F (38–49 °C)

Primary High Limit Temperature

300°F (149°C)

Mount Types

Bracket

Inlets / Outlets

Inlets

0.625” hose barb (15.9 mm)

Outlets

0.625” hose barb (15.9 mm)

Ingress Options

System Ingress

IP44

Certifications

CE-compliant models available
UL-C / US listed

CTM HOTflow® Engine Heater

Part Number

Voltage

Wattage

CTM10110-A00

120

1 kW

Replacement Parts List

CTM10110-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10110-CTM	CTM REPL ELEM ASM 1000W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM10110-N00

120

1 kW

Replacement Parts List

CTM10110-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10110-CTM	CTM REPL ELEM ASM 1000W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM10210-A00

240

1 kW

Replacement Parts List

CTM10210-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10210-CTM	CTM REPL ELEM ASM 1000W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM10210-E00

240

1 kW

Replacement Parts List

CTM10210-E00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10210-CTM	CTM REPL ELEM ASM 1000W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM10210-N00

240

1 kW

Replacement Parts List

CTM10210-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10210-CTM	CTM REPL ELEM ASM 1000W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15110-A00

120

1.5 kW

Replacement Parts List

CTM15110-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15110-CTM	CTM REPL ELEM ASM 1500W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15110-N00

120

1.5 kW

Replacement Parts List

CTM15110-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15110-CTM	CTM REPL ELEM ASM 1500W 120V 100-120F		3 lb (1.4 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15210-A00

240

1.5 kW

Replacement Parts List

CTM15210-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15210-CTM	CTM REPL ELEM ASM 1500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15210-E00

240

1.5 kW

Replacement Parts List

CTM15210-E00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15210-CTM	CTM REPL ELEM ASM 1500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15210-N00

240

1.5 kW

Replacement Parts List

CTM15210-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15210-CTM	CTM REPL ELEM ASM 1500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25110-A00

120

2.5 kW

Replacement Parts List

CTM25110-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25110-CTM	CTM REPL ELEM ASM 2500W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25110-N00

120

2.5 kW

Replacement Parts List

CTM25110-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25110-CTM	CTM REPL ELEM ASM 2500W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25210-A00

240

2.5 kW

Replacement Parts List

CTM25210-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25210-CTM	CTM REPL ELEM ASM 2500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25210-E00

240

2.5 kW

Replacement Parts List

CTM25210-E00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25210-CTM	CTM REPL ELEM ASM 2500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25210-N00

240

2.5 kW

Replacement Parts List

CTM25210-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25210-CTM	CTM REPL ELEM ASM 2500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

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