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COMBOMAX
Electric boiler with integrated instantaneous water heater.
Power capacity 4.5 kW to 12 kW :
20 8/ 2 4 0 V o lt s ( sing le ph as e )
INSTALLATION, USE AND CARE MANUAL
Your COMBOMAX
provide years of trouble-free service. This manual contains instructions for the safe and
proper installation, operation and maintenance of the boiler, in order to ensure your full
satisfaction
It is imperative that all persons who are expected to install, operate or adjust this boiler read
the instructions carefully.
Any questions regarding the operation, maintenance, service or warranty of this water
heater should be directed to the dealer or distributor you purchased it from. When all
installation steps have been completed, replace this installation manual in its original
envelope, and keep in a safe place near the heater for future reference.
THERMO 2000 INC.
Printed in Canada
TM
®
electric boiler has been carefully assembled and factory tested to
12
U l t r a
rev. : September 2013
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Summary of Contents for COMBOMAX ULTRA 12-4.5
- Page 1 20 8/ 2 4 0 V o lt s ( sing le ph as e ) INSTALLATION, USE AND CARE MANUAL ® Your COMBOMAX electric boiler has been carefully assembled and factory tested to provide years of trouble-free service. This manual contains instructions for the safe and...
- Page 2 Fresh water inlet : 3/4"NPT F Domestic hot water outlet : 3/4"NPT F Expansion tank : 1/2"NPT M Heating, supply : 1’’ NPT F Heating return : 1’’ NPT F COMBOMAX™ Installation, use and care manual Page (Revision Sept. 2013)
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Page 3: Section 2 : Introduction
• Tank and domestic hot water heat 2.1 LOCAL INSTALLATION exchanger drain cocks. REGULATIONS • Thermo manometer (heat This COMBOMAX™ Ultra 12 electric boiler must pressure indicator). installed accordance with these • Automatic air vent. instructions must... -
Page 4: Section 3 : Installation
NSF International recommendations. operating pressure to 207 kPa (30 psi). The room temperature must be maintained This COMBOMAX™Ultra 12 electric boiler is between 10C (50F) and 33°C (90°F). designed for a maximum operating temperature of 88°C (190°F). It is designed for hot water 3.3 CLEARANCE... - Page 5 Figure 1 : Top view, components identification and their location Figure 2 : Front view, components identification and their location : COMBOMAX™ Installation, use and care manual Page (Revision Sept. 2013)
- Page 6 Figure 3 : Basic installation diagram for a radiant floor heating system. Figure 4 : Basic installation diagram for a radiator installation COMBOMAX™ Installation, use and care manual Page (Revision Sept. 2013)
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Page 7: System Setup
It will also maintain a minimal operating pressure cold pressure of 83 kPa (12 psi). When 3.5 HEATING WATER CIRCUIT operating the COMBOMAX™ Ultra 12 and the heating system, pressure will vary between 83 kPa and 193 kPa (12 psi to 28 psi). The 3.5.1 Connecting... -
Page 8: Domestic Hot Water Circuit
This excessive operation COMBOMAX™ Ultra 12 must be a 120/240 Vac, can cause premature failure of the relief valve single phase, 60 Hz using 3 conductors (L1 – and possibly of the water heater itself. - Page 9 The components must wired such that, upon a heating demand from a thermostat, only the corresponding zone valve will be actuated and will in turn activate the COMBOMAX™ Ultra 12 . Connect the zone valve dry end switch contact to the W and R boiler electrical panel terminals.
- Page 10 Bleu 3 Set D Bi-E 2 Ht D 14 Pmp Demande Chauffage thermostat/ Bleu 13 Pmp 1 CD Heat Demand thermostat Noir/blk Rouge/Red Bleu Sonde temp. chaudière/ Boiler temp. Sensor COMBOMAX™ Installation, use and care manual Page (Revision Sept. 2013)
- Page 11 COMBOMAX™ Installation, use and care manual Page (Revision Sept. 2013)
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Page 12: Liquid Crystal Display (Lcd) Nformation
Section 4 : ( ™) CONTROL SET UP 4.1 INTRODUCTION The COMBOMAX™ Ultra 12 boiler is designed to be heating element(s). It is also capable of directly used in hydronic heating application where the managing one heating system circulating pump. -
Page 13: Interface Operation
When the tank properly set-up the COMBOMAX™ Ultra 12 for the temperature decrease under the target temperature, application in order to maximise its performances. -
Page 14: User Adjusted Tank Temperature Set Point
“0” to be displayed. This zero indicates that the “user” differential value is zero. By using the “+” or “-“ keys, the user can input a temperature differential between the installer set point and the actual operation set COMBOMAX™ Installation, use and care manual Page (Revision Sept. 2013) -
Page 15: Section 5 : Operation
There is a hot water scald potential if the thermostatically controlled mixing valve for reducing point-of-use water temperature is damaged, not properly working removed or by-passed. COMBOMAX™ Installation, use and care manual Page (Revision Sept. 2013) -
Page 16: Filling The Water Heater Tank
(water) and the domestic hot water. This heat required according power exchanger containing potable water must be capacity of the Combomax and the type filled. of heating system to reach the tank Make sure that the heat exchanger drain cock is water temperature target. - Page 17 Measure the hot water temperature increasing water tank temperature with a thermometer. Mixing valve adjustment is (maximum 88°C /190°). achieved by turning the mixing valve knob COMBOMAX™ Installation, use and care manual Page (Revision Sept. 2013)
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Page 18: Section 6 : Maintenance
Check for proper operation of the boiler controller, circulating pump(s), mixing valve for low temperature heating system, room thermostat(s) other heating system components for proper operation. Chaudière électrique COMBOMAX Guide d’installation, d’utilisation et d’entretien , Page (Révision Sept.2013) - Page 19 (1) accumulate in the COMBOMAX tank and boiler water acidity is lower than pH COMBOMAX ™ Ultra 12 tank and exchanger is to be use in only one (1) dwelling. 6.5 or higher than pH 8.5; or In the event that a leak should develop and occur within this limited warranty period The COMBOMAX unit is being subject to non authorized modifications;...
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