HK25/HKM25 pump groups at the Marlin Sp z.o.o. site


The heating installation at the headquarters of the network of MARLIN installation wholesalers near Warsaw was executed on the basis of WATTS heating system elements.

Detailed Description

Marlin M. Małecki sp.k. ( is a rapidly growing company that bases its business on wholesale and retail sales. It covers the area of 7 provinces: Wielkopolskie, Mazowieckie, Śląskie, Dolnośląskie, Lubuskie, Łódzkie and Kujawsko-Pomorskie. The installation in the company's newly developed office is based on WATTS products that comprise HK25/ HKM25 pump groups, HW 140/140 coupling cat. no. 10010419 and manifold 10026672. The 4-circuit VB25/32 manifold was used to connect 4 circuits that serve individual heating circuits in the following zones: retail department, wholesale department, bathroom department and administration zone. The total capacity of the installation is 55kW, which is provided by a MONOBLOCK heat pump with a heating capacity of 30kW from IMMERGAS and 50kW from a BOSCH gas boiler. Drinking water is prepared in a Kospel model SP-180 storage tank. The installation will be equipped (the branch is not used in the pictures) with a heat buffer of 300 litres capacity made by ELEKTROMET. The entire heating system is controlled by TECH STEROWNIKI controllers.


Poland, Warsaw


Office Buildings


August 2022