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SATK series wall-mounted indirect Heat Interface Unit
INSTRUCTIONS FOR INSTALLATION, COMMISSIONING AND MAINTENANCE
All languages are available on:
Product range
SATK32103
Indirect wall-mounted HIU for instantaneous
domestic hot water production, capacity 50 kW
SATK32105
Indirect wall-mounted HIU for instantaneous
domestic hot water production, capacity 60 kW
SATK32107
Indirect wall-mounted HIU for instantaneous
domestic hot water production, for low temperature
heating networks.
(1)
Primary side head > 50 kPa, primary flow temperature 70 °C,
DHW 10 - 50 °C
IT
FR
NL
.
(1)
.
(1)
Function
The SATK series HIU allows independent control of heat regulation and
domestic hot water production within centralised heating systems or systems
served by district heating networks.
The heat interface unit features exceptional flexibility of installation and remote
controllable smart electronic functions designed to enhance efficiency of the
system.
CONTENTS
Dimensions - Technical specifications
Hydraulic components and diagram
DHW function - Comfort functions
Commissioning check-list
H0003193.04
www.caleffi.com
SATK32 series
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Summary of Contents for CALEFFI SATK32107 Series
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Page 1: Table Of Contents
H0003193.04 www.caleffi.com SATK series wall-mounted indirect Heat Interface Unit SATK32 series INSTRUCTIONS FOR INSTALLATION, COMMISSIONING AND MAINTENANCE All languages are available on: Function The SATK series HIU allows independent control of heat regulation and domestic hot water production within centralised heating systems or systems served by district heating networks. -
Page 2: Safety Instructions
High temperature circuit flow Medium temperature circuit flow For the updated version of the technical documentation refer to www.caleffi.it. Primary circuit flow High temperature circuit return... - Page 3 Dimensions 3/4” 1/2” Description of connections SATK32 technical specifications Medium: water Materials Max. percentage of glycol: 30 % Components: brass UNI EN12165 CW617N Maximum medium temperature: 90 °C Connecting pipes: steel Frame: RAL 9010 painted steel Max. working pressure: - primary circuit: 1,6 MPa (16 bar) Exchanger: stainless steel brazed with copper...
- Page 4 Characteristic components Frame Controller Heating exchanger primary circuit air venting/drain Heating exchanger secondary circuit air venting/drain Heating exchanger Pressure switch 2-way modulating valve - Heating 2-way modulating valve - DHW Return temperature probe 10. Pressure gauge 11. Safety thermostat 12. 130 mm heat meter template 13.
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Page 5: Hydraulic Installation
Hydraulic installation Notes for the installer The SATK series HIU is designed for installation in a sheltered domestic environment (or similar), therefore it cannot be installed or used outdoors, i.e. in areas directly exposed to the weather. Outdoor installation may cause malfunctioning and hazards. If the appliance is enclosed inside or between cabinets, sufficient space must be provided for routine maintenance procedures. - Page 6 Installation procedure (without template) Secure the metal bracket supplied with the HIU to the wall using suitable wall anchors. Connections on the bottom Connections on the top Installation with template NOTE: Before installation, it is recommended to carry out accurate flushing of all the pipes of the system in order to remove any residue or impurities that could endanger correct operation of the HIU.
- Page 7 Conveyance of the safety relief valve The safety relief valve is equipped with a compression fitting suitable for 15 mm copper pipe and can be rotated in accordance with the HIU installation position. If SATK32 is installed with upward facing connections, use discharge pipe code 789832, specifically designed to route the valve drain line through the insulation shell, without damaging the internal electronic components.
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Page 8: Electrical Installation
Electrical installation Connection to the electric supply The appliance is supplied with an electric supply cable which is not fitted with a plug. The appliance should be electrically connected to a 230 V (AC) single- phase + earth mains supply using the three-wire cable marked with the label as specified aside, observing the LIVE (L) - NEUTRAL (N) polarities and the earth connection. -
Page 9: Commissioning
Commissioning N.B. during the procedures for venting/draining the system use Filling procedure for SATK32 centralised system suitable measures to avoid the risk of any liquid dripping onto the 1. Open the air vent cocks upstream of the DHW and HEAT electronic components. -
Page 10: Remote User Interface Quick Guide
Remote user interface quick guide DISPLAY: BUTTONS: (set) Current time/date (day/night) (set) Set point temperature (set) Current time/date Daytime/night-time (set) Current time/date k outside temperature compensation (day/night) (day/night) Set point temperature Set point temperature Ora/giorno corrente Daytime/nigh Daytime/night-time setting (day/night) k outside temperature compensation k outside temperature compensation Temperature di set point... - Page 11 <set> Current time/date <R> <day/night> Set point temperature Daytime/night-time setting Comfort function <temp> <mode> Temperature DHW ON/OFF display Heating ON/OFF (ambient set point + probes) <prog> <reset> Heating hourly Resettable error reset/floor slab programming and heating function comfort function Primary limit/set return temperature in Primary limit/set return temperature in Comfort function (ON/OFF or according heating mode (**)
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Page 12: Heating Function
alta/bassa temperatura Heating function mandata a punto sso impostazione temperatura di mandata HIU setting at HIGH/LOW temperature The HIU is set at LOW temperature by default (underfloor heating, parameter t00 = 1). To change this setting and supply a system with mandata a punto sso impostazione temperatura di high temperature terminals go to the technical menu (see page 11) - Page 13 DHW function The DHW cycle always takes priority over the heating cycle. DEFAULT SETTING: fixed DHW set point (parameter t06=0) When DHW cycle activation is requested, due to DHW tapping by the user (detected by the domestic water flow meter), the regulator modulates the valve opening in order to adjust the temperature detected by the domestic water probe to the selected set point value.
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Page 14: Anti-Legionella Function
Anti-legionella function DEFAULT SETTING: anti-legionella function OFF (technical parameter t08 = 0) Enabling the anti-legionella function by means of technical parameter t08 = 1, in time band 3:00 - 3:30: - the DHW set point will be temporarily increased to the maximum value (60 °C) - the comfort/recirculation function will be forced ON. -
Page 15: Circulator - Curves And Setting
CARATTERISTICA PROPORZIONALE CARATTERISTICA COSTANTE Circulator - Curves and setting GIRI FISSI CURVA 1 (MIN) CURVA 2 A long press of the front key (>10 s) locks the pump setting, preventing The HIU is equipped with a Grundfos circulator model UPM3 AUTO possible incorrect modifications of the curve. -
Page 16: Auxiliary Microswitch
Auxiliary microswitch The HIU is equipped with a contact, driven by a relay incorporated in the circuit board, the intervention logic of which can be programmed in accordance with requirements by setting technical parameter t05. Each event linked to operation of the HIU is linked to a numerical value, according to the following table: Event/condition Value... -
Page 17: Modbus
The HIU offers a remote connectivity solution by means an RS-485 wired network and Modbus RTU communication protocol. On request, Caleffi will supply a map of the Mod-Bus registers and data transmission specifications so the product can be integrated in an existing BMS system. -
Page 18: Safety And Alarms
Safety and alarms Errors Errors Errors Errors If the electronic circuit board detects a fault, the display shows the Safety thermostat cut-out error code concerned and the symbol Error code 69 Heating circuit pressure switch fault Error code 4 <set> Ora/giorno corrente HIUs configured to support low temperature heating continuously Errors... -
Page 19: Electronic Circuit Board
RS-485 BUS ORT OTS PREPAID ???????? Electronic circuit board RS-485 BUS RT OTS PREPAID Optional connections ???????? The electronic circuit board has a front door (shown in the adjacent figure) that provides access to the connectors related to HIU optional functions. -
Page 20: Periodic Maintenance
Periodic maintenance The following checks must be carried out at least once very 12 months, in accordance with the prescriptions of standard EN 806-5. OPERATIONS TO BE PERFORMED Force an actuators reset by switching the HIU power supply OFF and then ON Visually check for the absence of leaks and/or anomalies Check for possible active errors shown on the user interface Test correct operation of the pump by closing the thermostat contact or forcing it to close... - Page 21 19 for the connections. After concluding maintenance, proceed with the filling and checking operations described in the chapter “commissioning” (page 9) and fit the cover. If you require any information regarding spare parts, please contact Caleffi spa.
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Page 22: Troubleshooting
Troubleshooting FAULT DESCRIPTION ALERTS POSSIBLE CAUSE OF FAULT OPERATIONS TO BE PERFORMED primary circuit shut-off valves closed open the valves modulating valve actuator disconnected from valve body reconnect actuator modulating valve actuator faulty call qualified personnel to have it replaced blinking DHW temperature probe cable inverted with heating probe restore correct connection... - Page 23 alta/bassa temperatura peratura ritorno FAULT DESCRIPTION ALERTS POSSIBLE CAUSE OF FAULT OPERATIONS TO BE PERFORMED mandata a punto sso impostazione temperatura di heating cycle temperature set point too low increase set point mandata chrono-thermostat temperature setting incorrect check programming of chrono-thermostat HIU strainer clogged call qualified personnel to have it serviced punto sso...
- Page 24 Checks to be performed Is the heat interface unit properly secured to the wall? Has the system flushing been carried out? Check strainers and clean them if necessary Is the heat meter (if present) connected? Is the heat meter (if present) connected to the building datalogger (if required)? Is the DCW line fitted with a pressure reducing valve? Is the system protected by water hammer arresters? Are the shut-off valves open?
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